Remove Basilisk from the Unified XUL Platform repository

Development will proceed at https://github.com/MoonchildProductions/Basilisk

258 files changed, 0 insertions, 12005 deletions

diff --git a/application/basilisk/extensions/pdfjs/content/web/cmaps/78-EUC-H.bcmap b/application/basilisk/extensions/pdfjs/content/web/cmaps/78-EUC-H.bcmap
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diff --git a/application/basilisk/extensions/pdfjs/content/web/cmaps/78-EUC-V.bcmap b/application/basilisk/extensions/pdfjs/content/web/cmaps/78-EUC-V.bcmap
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diff --git a/application/basilisk/extensions/pdfjs/content/web/cmaps/78-H.bcmap b/application/basilisk/extensions/pdfjs/content/web/cmaps/78-H.bcmap
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diff --git a/application/basilisk/extensions/pdfjs/content/web/cmaps/78-RKSJ-H.bcmap b/application/basilisk/extensions/pdfjs/content/web/cmaps/78-RKSJ-H.bcmap
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diff --git a/application/basilisk/extensions/pdfjs/content/web/cmaps/78ms-RKSJ-H.bcmap b/application/basilisk/extensions/pdfjs/content/web/cmaps/78ms-RKSJ-H.bcmap
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diff --git a/application/basilisk/extensions/pdfjs/content/web/cmaps/Add-H.bcmap b/application/basilisk/extensions/pdfjs/content/web/cmaps/Add-H.bcmap
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diff --git a/application/basilisk/extensions/pdfjs/content/web/cmaps/Add-RKSJ-H.bcmap b/application/basilisk/extensions/pdfjs/content/web/cmaps/Add-RKSJ-H.bcmap
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diff --git a/application/basilisk/extensions/pdfjs/content/web/cmaps/Adobe-CNS1-0.bcmap b/application/basilisk/extensions/pdfjs/content/web/cmaps/Adobe-CNS1-0.bcmap
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diff --git a/application/basilisk/extensions/pdfjs/content/web/cmaps/Adobe-CNS1-3.bcmap b/application/basilisk/extensions/pdfjs/content/web/cmaps/Adobe-CNS1-3.bcmap
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diff --git a/application/basilisk/extensions/pdfjs/content/web/cmaps/Adobe-Korea1-0.bcmap b/application/basilisk/extensions/pdfjs/content/web/cmaps/Adobe-Korea1-0.bcmap
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diff --git a/application/basilisk/extensions/pdfjs/content/web/cmaps/CNS1-V.bcmap b/application/basilisk/extensions/pdfjs/content/web/cmaps/CNS1-V.bcmap
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diff --git a/application/basilisk/extensions/pdfjs/content/web/cmaps/CNS2-H.bcmap b/application/basilisk/extensions/pdfjs/content/web/cmaps/CNS2-H.bcmap
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diff --git a/application/basilisk/extensions/pdfjs/content/web/cmaps/CNS2-V.bcmap b/application/basilisk/extensions/pdfjs/content/web/cmaps/CNS2-V.bcmap
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@@ -1,3 +0,0 @@
-àRCopyright 1990-2009 Adobe Systems Incorporated.
-All rights reserved.
-See ./LICENSEáCNS2-H
\ No newline at end of file
diff --git a/application/basilisk/extensions/pdfjs/content/web/cmaps/ETHK-B5-H.bcmap b/application/basilisk/extensions/pdfjs/content/web/cmaps/ETHK-B5-H.bcmap
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@@ -1,3 +0,0 @@
-àRCopyright 1990-2009 Adobe Systems Incorporated.
-All rights reserved.
-See ./LICENSEá	ETen-B5-H`
 ^

\ No newline at end of file
diff --git a/application/basilisk/extensions/pdfjs/content/web/cmaps/ETenms-B5-V.bcmap b/application/basilisk/extensions/pdfjs/content/web/cmaps/ETenms-B5-V.bcmap
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diff --git a/application/basilisk/extensions/pdfjs/content/web/cmaps/LICENSE b/application/basilisk/extensions/pdfjs/content/web/cmaps/LICENSE
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+++ /dev/null
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-%%Copyright: -----------------------------------------------------------
-%%Copyright: Copyright 1990-2009 Adobe Systems Incorporated.
-%%Copyright: All rights reserved.
-%%Copyright:
-%%Copyright: Redistribution and use in source and binary forms, with or
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-%%Copyright: products derived from this software without specific prior
-%%Copyright: written permission. 
-%%Copyright:
-%%Copyright: THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
-%%Copyright: CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
-%%Copyright: INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-%%Copyright: MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-%%Copyright: DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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-%%Copyright: -----------------------------------------------------------
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+++ /dev/null
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--- a/application/basilisk/extensions/pdfjs/content/web/cmaps/UniGB-UTF16-V.bcmap
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--- a/application/basilisk/extensions/pdfjs/content/web/cmaps/UniKS-UTF16-V.bcmap
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diff --git a/application/basilisk/extensions/pdfjs/content/web/cmaps/UniKS-UTF8-H.bcmap b/application/basilisk/extensions/pdfjs/content/web/cmaps/UniKS-UTF8-H.bcmap
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+++ /dev/null
diff --git a/application/basilisk/extensions/pdfjs/content/web/cmaps/UniKS-UTF8-V.bcmap b/application/basilisk/extensions/pdfjs/content/web/cmaps/UniKS-UTF8-V.bcmap
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index 8dfa76a58..000000000
--- a/application/basilisk/extensions/pdfjs/content/web/cmaps/UniKS-UTF8-V.bcmap
+++ /dev/null
diff --git a/application/basilisk/extensions/pdfjs/content/web/cmaps/V.bcmap b/application/basilisk/extensions/pdfjs/content/web/cmaps/V.bcmap
deleted file mode 100644
index fdec99066..000000000
--- a/application/basilisk/extensions/pdfjs/content/web/cmaps/V.bcmap
+++ /dev/null
diff --git a/application/basilisk/extensions/pdfjs/content/web/cmaps/WP-Symbol.bcmap b/application/basilisk/extensions/pdfjs/content/web/cmaps/WP-Symbol.bcmap
deleted file mode 100644
index 46729bbf3..000000000
--- a/application/basilisk/extensions/pdfjs/content/web/cmaps/WP-Symbol.bcmap
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diff --git a/application/basilisk/extensions/pdfjs/content/web/debugger.js b/application/basilisk/extensions/pdfjs/content/web/debugger.js
deleted file mode 100644
index 8a049f4c6..000000000
--- a/application/basilisk/extensions/pdfjs/content/web/debugger.js
+++ /dev/null
@@ -1,616 +0,0 @@
-/* Copyright 2012 Mozilla Foundation
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-'use strict';
-
-var FontInspector = (function FontInspectorClosure() {
-  var fonts;
-  var active = false;
-  var fontAttribute = 'data-font-name';
-  function removeSelection() {
-    var divs = document.querySelectorAll('div[' + fontAttribute + ']');
-    for (var i = 0, ii = divs.length; i < ii; ++i) {
-      var div = divs[i];
-      div.className = '';
-    }
-  }
-  function resetSelection() {
-    var divs = document.querySelectorAll('div[' + fontAttribute + ']');
-    for (var i = 0, ii = divs.length; i < ii; ++i) {
-      var div = divs[i];
-      div.className = 'debuggerHideText';
-    }
-  }
-  function selectFont(fontName, show) {
-    var divs = document.querySelectorAll('div[' + fontAttribute + '=' +
-                                         fontName + ']');
-    for (var i = 0, ii = divs.length; i < ii; ++i) {
-      var div = divs[i];
-      div.className = show ? 'debuggerShowText' : 'debuggerHideText';
-    }
-  }
-  function textLayerClick(e) {
-    if (!e.target.dataset.fontName ||
-        e.target.tagName.toUpperCase() !== 'DIV') {
-      return;
-    }
-    var fontName = e.target.dataset.fontName;
-    var selects = document.getElementsByTagName('input');
-    for (var i = 0; i < selects.length; ++i) {
-      var select = selects[i];
-      if (select.dataset.fontName !== fontName) {
-        continue;
-      }
-      select.checked = !select.checked;
-      selectFont(fontName, select.checked);
-      select.scrollIntoView();
-    }
-  }
-  return {
-    // Properties/functions needed by PDFBug.
-    id: 'FontInspector',
-    name: 'Font Inspector',
-    panel: null,
-    manager: null,
-    init: function init(pdfjsLib) {
-      var panel = this.panel;
-      panel.setAttribute('style', 'padding: 5px;');
-      var tmp = document.createElement('button');
-      tmp.addEventListener('click', resetSelection);
-      tmp.textContent = 'Refresh';
-      panel.appendChild(tmp);
-
-      fonts = document.createElement('div');
-      panel.appendChild(fonts);
-    },
-    cleanup: function cleanup() {
-      fonts.textContent = '';
-    },
-    enabled: false,
-    get active() {
-      return active;
-    },
-    set active(value) {
-      active = value;
-      if (active) {
-        document.body.addEventListener('click', textLayerClick, true);
-        resetSelection();
-      } else {
-        document.body.removeEventListener('click', textLayerClick, true);
-        removeSelection();
-      }
-    },
-    // FontInspector specific functions.
-    fontAdded: function fontAdded(fontObj, url) {
-      function properties(obj, list) {
-        var moreInfo = document.createElement('table');
-        for (var i = 0; i < list.length; i++) {
-          var tr = document.createElement('tr');
-          var td1 = document.createElement('td');
-          td1.textContent = list[i];
-          tr.appendChild(td1);
-          var td2 = document.createElement('td');
-          td2.textContent = obj[list[i]].toString();
-          tr.appendChild(td2);
-          moreInfo.appendChild(tr);
-        }
-        return moreInfo;
-      }
-      var moreInfo = properties(fontObj, ['name', 'type']);
-      var fontName = fontObj.loadedName;
-      var font = document.createElement('div');
-      var name = document.createElement('span');
-      name.textContent = fontName;
-      var download = document.createElement('a');
-      if (url) {
-        url = /url\(['"]?([^\)"']+)/.exec(url);
-        download.href = url[1];
-      } else if (fontObj.data) {
-        url = URL.createObjectURL(new Blob([fontObj.data], {
-          type: fontObj.mimeType
-        }));
-        download.href = url;
-      }
-      download.textContent = 'Download';
-      var logIt = document.createElement('a');
-      logIt.href = '';
-      logIt.textContent = 'Log';
-      logIt.addEventListener('click', function(event) {
-        event.preventDefault();
-        console.log(fontObj);
-      });
-      var select = document.createElement('input');
-      select.setAttribute('type', 'checkbox');
-      select.dataset.fontName = fontName;
-      select.addEventListener('click', (function(select, fontName) {
-        return (function() {
-           selectFont(fontName, select.checked);
-        });
-      })(select, fontName));
-      font.appendChild(select);
-      font.appendChild(name);
-      font.appendChild(document.createTextNode(' '));
-      font.appendChild(download);
-      font.appendChild(document.createTextNode(' '));
-      font.appendChild(logIt);
-      font.appendChild(moreInfo);
-      fonts.appendChild(font);
-      // Somewhat of a hack, should probably add a hook for when the text layer
-      // is done rendering.
-      setTimeout(function() {
-        if (this.active) {
-          resetSelection();
-        }
-      }.bind(this), 2000);
-    }
-  };
-})();
-
-var opMap;
-
-// Manages all the page steppers.
-var StepperManager = (function StepperManagerClosure() {
-  var steppers = [];
-  var stepperDiv = null;
-  var stepperControls = null;
-  var stepperChooser = null;
-  var breakPoints = Object.create(null);
-  return {
-    // Properties/functions needed by PDFBug.
-    id: 'Stepper',
-    name: 'Stepper',
-    panel: null,
-    manager: null,
-    init: function init(pdfjsLib) {
-      var self = this;
-      this.panel.setAttribute('style', 'padding: 5px;');
-      stepperControls = document.createElement('div');
-      stepperChooser = document.createElement('select');
-      stepperChooser.addEventListener('change', function(event) {
-        self.selectStepper(this.value);
-      });
-      stepperControls.appendChild(stepperChooser);
-      stepperDiv = document.createElement('div');
-      this.panel.appendChild(stepperControls);
-      this.panel.appendChild(stepperDiv);
-      if (sessionStorage.getItem('pdfjsBreakPoints')) {
-        breakPoints = JSON.parse(sessionStorage.getItem('pdfjsBreakPoints'));
-      }
-
-      opMap = Object.create(null);
-      for (var key in pdfjsLib.OPS) {
-        opMap[pdfjsLib.OPS[key]] = key;
-      }
-    },
-    cleanup: function cleanup() {
-      stepperChooser.textContent = '';
-      stepperDiv.textContent = '';
-      steppers = [];
-    },
-    enabled: false,
-    active: false,
-    // Stepper specific functions.
-    create: function create(pageIndex) {
-      var debug = document.createElement('div');
-      debug.id = 'stepper' + pageIndex;
-      debug.setAttribute('hidden', true);
-      debug.className = 'stepper';
-      stepperDiv.appendChild(debug);
-      var b = document.createElement('option');
-      b.textContent = 'Page ' + (pageIndex + 1);
-      b.value = pageIndex;
-      stepperChooser.appendChild(b);
-      var initBreakPoints = breakPoints[pageIndex] || [];
-      var stepper = new Stepper(debug, pageIndex, initBreakPoints);
-      steppers.push(stepper);
-      if (steppers.length === 1) {
-        this.selectStepper(pageIndex, false);
-      }
-      return stepper;
-    },
-    selectStepper: function selectStepper(pageIndex, selectPanel) {
-      var i;
-      pageIndex = pageIndex | 0;
-      if (selectPanel) {
-        this.manager.selectPanel(this);
-      }
-      for (i = 0; i < steppers.length; ++i) {
-        var stepper = steppers[i];
-        if (stepper.pageIndex === pageIndex) {
-          stepper.panel.removeAttribute('hidden');
-        } else {
-          stepper.panel.setAttribute('hidden', true);
-        }
-      }
-      var options = stepperChooser.options;
-      for (i = 0; i < options.length; ++i) {
-        var option = options[i];
-        option.selected = (option.value | 0) === pageIndex;
-      }
-    },
-    saveBreakPoints: function saveBreakPoints(pageIndex, bps) {
-      breakPoints[pageIndex] = bps;
-      sessionStorage.setItem('pdfjsBreakPoints', JSON.stringify(breakPoints));
-    }
-  };
-})();
-
-// The stepper for each page's IRQueue.
-var Stepper = (function StepperClosure() {
-  // Shorter way to create element and optionally set textContent.
-  function c(tag, textContent) {
-    var d = document.createElement(tag);
-    if (textContent) {
-      d.textContent = textContent;
-    }
-    return d;
-  }
-
-  function simplifyArgs(args) {
-    if (typeof args === 'string') {
-      var MAX_STRING_LENGTH = 75;
-      return args.length <= MAX_STRING_LENGTH ? args :
-        args.substr(0, MAX_STRING_LENGTH) + '...';
-    }
-    if (typeof args !== 'object' || args === null) {
-      return args;
-    }
-    if ('length' in args) { // array
-      var simpleArgs = [], i, ii;
-      var MAX_ITEMS = 10;
-      for (i = 0, ii = Math.min(MAX_ITEMS, args.length); i < ii; i++) {
-        simpleArgs.push(simplifyArgs(args[i]));
-      }
-      if (i < args.length) {
-        simpleArgs.push('...');
-      }
-      return simpleArgs;
-    }
-    var simpleObj = {};
-    for (var key in args) {
-      simpleObj[key] = simplifyArgs(args[key]);
-    }
-    return simpleObj;
-  }
-
-  function Stepper(panel, pageIndex, initialBreakPoints) {
-    this.panel = panel;
-    this.breakPoint = 0;
-    this.nextBreakPoint = null;
-    this.pageIndex = pageIndex;
-    this.breakPoints = initialBreakPoints;
-    this.currentIdx = -1;
-    this.operatorListIdx = 0;
-  }
-  Stepper.prototype = {
-    init: function init(operatorList) {
-      var panel = this.panel;
-      var content = c('div', 'c=continue, s=step');
-      var table = c('table');
-      content.appendChild(table);
-      table.cellSpacing = 0;
-      var headerRow = c('tr');
-      table.appendChild(headerRow);
-      headerRow.appendChild(c('th', 'Break'));
-      headerRow.appendChild(c('th', 'Idx'));
-      headerRow.appendChild(c('th', 'fn'));
-      headerRow.appendChild(c('th', 'args'));
-      panel.appendChild(content);
-      this.table = table;
-      this.updateOperatorList(operatorList);
-    },
-    updateOperatorList: function updateOperatorList(operatorList) {
-      var self = this;
-
-      function cboxOnClick() {
-        var x = +this.dataset.idx;
-        if (this.checked) {
-          self.breakPoints.push(x);
-        } else {
-          self.breakPoints.splice(self.breakPoints.indexOf(x), 1);
-        }
-        StepperManager.saveBreakPoints(self.pageIndex, self.breakPoints);
-      }
-
-      var MAX_OPERATORS_COUNT = 15000;
-      if (this.operatorListIdx > MAX_OPERATORS_COUNT) {
-        return;
-      }
-
-      var chunk = document.createDocumentFragment();
-      var operatorsToDisplay = Math.min(MAX_OPERATORS_COUNT,
-                                        operatorList.fnArray.length);
-      for (var i = this.operatorListIdx; i < operatorsToDisplay; i++) {
-        var line = c('tr');
-        line.className = 'line';
-        line.dataset.idx = i;
-        chunk.appendChild(line);
-        var checked = this.breakPoints.indexOf(i) !== -1;
-        var args = operatorList.argsArray[i] || [];
-
-        var breakCell = c('td');
-        var cbox = c('input');
-        cbox.type = 'checkbox';
-        cbox.className = 'points';
-        cbox.checked = checked;
-        cbox.dataset.idx = i;
-        cbox.onclick = cboxOnClick;
-
-        breakCell.appendChild(cbox);
-        line.appendChild(breakCell);
-        line.appendChild(c('td', i.toString()));
-        var fn = opMap[operatorList.fnArray[i]];
-        var decArgs = args;
-        if (fn === 'showText') {
-          var glyphs = args[0];
-          var newArgs = [];
-          var str = [];
-          for (var j = 0; j < glyphs.length; j++) {
-            var glyph = glyphs[j];
-            if (typeof glyph === 'object' && glyph !== null) {
-              str.push(glyph.fontChar);
-            } else {
-              if (str.length > 0) {
-                newArgs.push(str.join(''));
-                str = [];
-              }
-              newArgs.push(glyph); // null or number
-            }
-          }
-          if (str.length > 0) {
-            newArgs.push(str.join(''));
-          }
-          decArgs = [newArgs];
-        }
-        line.appendChild(c('td', fn));
-        line.appendChild(c('td', JSON.stringify(simplifyArgs(decArgs))));
-      }
-      if (operatorsToDisplay < operatorList.fnArray.length) {
-        line = c('tr');
-        var lastCell = c('td', '...');
-        lastCell.colspan = 4;
-        chunk.appendChild(lastCell);
-      }
-      this.operatorListIdx = operatorList.fnArray.length;
-      this.table.appendChild(chunk);
-    },
-    getNextBreakPoint: function getNextBreakPoint() {
-      this.breakPoints.sort(function(a, b) { return a - b; });
-      for (var i = 0; i < this.breakPoints.length; i++) {
-        if (this.breakPoints[i] > this.currentIdx) {
-          return this.breakPoints[i];
-        }
-      }
-      return null;
-    },
-    breakIt: function breakIt(idx, callback) {
-      StepperManager.selectStepper(this.pageIndex, true);
-      var self = this;
-      var dom = document;
-      self.currentIdx = idx;
-      var listener = function(e) {
-        switch (e.keyCode) {
-          case 83: // step
-            dom.removeEventListener('keydown', listener, false);
-            self.nextBreakPoint = self.currentIdx + 1;
-            self.goTo(-1);
-            callback();
-            break;
-          case 67: // continue
-            dom.removeEventListener('keydown', listener, false);
-            var breakPoint = self.getNextBreakPoint();
-            self.nextBreakPoint = breakPoint;
-            self.goTo(-1);
-            callback();
-            break;
-        }
-      };
-      dom.addEventListener('keydown', listener, false);
-      self.goTo(idx);
-    },
-    goTo: function goTo(idx) {
-      var allRows = this.panel.getElementsByClassName('line');
-      for (var x = 0, xx = allRows.length; x < xx; ++x) {
-        var row = allRows[x];
-        if ((row.dataset.idx | 0) === idx) {
-          row.style.backgroundColor = 'rgb(251,250,207)';
-          row.scrollIntoView();
-        } else {
-          row.style.backgroundColor = null;
-        }
-      }
-    }
-  };
-  return Stepper;
-})();
-
-var Stats = (function Stats() {
-  var stats = [];
-  function clear(node) {
-    while (node.hasChildNodes()) {
-      node.removeChild(node.lastChild);
-    }
-  }
-  function getStatIndex(pageNumber) {
-    for (var i = 0, ii = stats.length; i < ii; ++i) {
-      if (stats[i].pageNumber === pageNumber) {
-        return i;
-      }
-    }
-    return false;
-  }
-  return {
-    // Properties/functions needed by PDFBug.
-    id: 'Stats',
-    name: 'Stats',
-    panel: null,
-    manager: null,
-    init: function init(pdfjsLib) {
-      this.panel.setAttribute('style', 'padding: 5px;');
-      pdfjsLib.PDFJS.enableStats = true;
-    },
-    enabled: false,
-    active: false,
-    // Stats specific functions.
-    add: function(pageNumber, stat) {
-      if (!stat) {
-        return;
-      }
-      var statsIndex = getStatIndex(pageNumber);
-      if (statsIndex !== false) {
-        var b = stats[statsIndex];
-        this.panel.removeChild(b.div);
-        stats.splice(statsIndex, 1);
-      }
-      var wrapper = document.createElement('div');
-      wrapper.className = 'stats';
-      var title = document.createElement('div');
-      title.className = 'title';
-      title.textContent = 'Page: ' + pageNumber;
-      var statsDiv = document.createElement('div');
-      statsDiv.textContent = stat.toString();
-      wrapper.appendChild(title);
-      wrapper.appendChild(statsDiv);
-      stats.push({ pageNumber: pageNumber, div: wrapper });
-      stats.sort(function(a, b) { return a.pageNumber - b.pageNumber; });
-      clear(this.panel);
-      for (var i = 0, ii = stats.length; i < ii; ++i) {
-        this.panel.appendChild(stats[i].div);
-      }
-    },
-    cleanup: function () {
-      stats = [];
-      clear(this.panel);
-    }
-  };
-})();
-
-// Manages all the debugging tools.
-var PDFBug = (function PDFBugClosure() {
-  var panelWidth = 300;
-  var buttons = [];
-  var activePanel = null;
-
-  return {
-    tools: [
-      FontInspector,
-      StepperManager,
-      Stats
-    ],
-    enable: function(ids) {
-      var all = false, tools = this.tools;
-      if (ids.length === 1 && ids[0] === 'all') {
-        all = true;
-      }
-      for (var i = 0; i < tools.length; ++i) {
-        var tool = tools[i];
-        if (all || ids.indexOf(tool.id) !== -1) {
-          tool.enabled = true;
-        }
-      }
-      if (!all) {
-        // Sort the tools by the order they are enabled.
-        tools.sort(function(a, b) {
-          var indexA = ids.indexOf(a.id);
-          indexA = indexA < 0 ? tools.length : indexA;
-          var indexB = ids.indexOf(b.id);
-          indexB = indexB < 0 ? tools.length : indexB;
-          return indexA - indexB;
-        });
-      }
-    },
-    init: function init(pdfjsLib, container) {
-      /*
-       * Basic Layout:
-       * PDFBug
-       *  Controls
-       *  Panels
-       *    Panel
-       *    Panel
-       *    ...
-       */
-      var ui = document.createElement('div');
-      ui.id = 'PDFBug';
-
-      var controls = document.createElement('div');
-      controls.setAttribute('class', 'controls');
-      ui.appendChild(controls);
-
-      var panels = document.createElement('div');
-      panels.setAttribute('class', 'panels');
-      ui.appendChild(panels);
-
-      container.appendChild(ui);
-      container.style.right = panelWidth + 'px';
-
-      // Initialize all the debugging tools.
-      var tools = this.tools;
-      var self = this;
-      for (var i = 0; i < tools.length; ++i) {
-        var tool = tools[i];
-        var panel = document.createElement('div');
-        var panelButton = document.createElement('button');
-        panelButton.textContent = tool.name;
-        panelButton.addEventListener('click', (function(selected) {
-          return function(event) {
-            event.preventDefault();
-            self.selectPanel(selected);
-          };
-        })(i));
-        controls.appendChild(panelButton);
-        panels.appendChild(panel);
-        tool.panel = panel;
-        tool.manager = this;
-        if (tool.enabled) {
-          tool.init(pdfjsLib);
-        } else {
-          panel.textContent = tool.name + ' is disabled. To enable add ' +
-                              ' "' + tool.id + '" to the pdfBug parameter ' +
-                              'and refresh (separate multiple by commas).';
-        }
-        buttons.push(panelButton);
-      }
-      this.selectPanel(0);
-    },
-    cleanup: function cleanup() {
-      for (var i = 0, ii = this.tools.length; i < ii; i++) {
-        if (this.tools[i].enabled) {
-          this.tools[i].cleanup();
-        }
-      }
-    },
-    selectPanel: function selectPanel(index) {
-      if (typeof index !== 'number') {
-        index = this.tools.indexOf(index);
-      }
-      if (index === activePanel) {
-        return;
-      }
-      activePanel = index;
-      var tools = this.tools;
-      for (var j = 0; j < tools.length; ++j) {
-        if (j === index) {
-          buttons[j].setAttribute('class', 'active');
-          tools[j].active = true;
-          tools[j].panel.removeAttribute('hidden');
-        } else {
-          buttons[j].setAttribute('class', '');
-          tools[j].active = false;
-          tools[j].panel.setAttribute('hidden', 'true');
-        }
-      }
-    }
-  };
-})();
diff --git a/application/basilisk/extensions/pdfjs/content/web/images/annotation-check.svg b/application/basilisk/extensions/pdfjs/content/web/images/annotation-check.svg
deleted file mode 100644
index 71cd16df5..000000000
--- a/application/basilisk/extensions/pdfjs/content/web/images/annotation-check.svg
+++ /dev/null
@@ -1,11 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<svg
-   xmlns="http://www.w3.org/2000/svg"
-   width="40"
-   height="40"
-   viewBox="0 0 40 40">
-  <path
-     d="M 1.5006714,23.536225 6.8925879,18.994244 14.585721,26.037937 34.019683,4.5410479 38.499329,9.2235032 14.585721,35.458952 z"
-     id="path4"
-     style="fill:#ffff00;fill-opacity:1;stroke:#000000;stroke-width:1.25402856;stroke-opacity:1" />
-</svg>
diff --git a/application/basilisk/extensions/pdfjs/content/web/images/annotation-comment.svg b/application/basilisk/extensions/pdfjs/content/web/images/annotation-comment.svg
deleted file mode 100644
index 86f1f1724..000000000
--- a/application/basilisk/extensions/pdfjs/content/web/images/annotation-comment.svg
+++ /dev/null
@@ -1,16 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<svg
-   xmlns="http://www.w3.org/2000/svg"
-   height="40"
-   width="40"
-   viewBox="0 0 40 40">
-  <rect
-     style="fill:#ffff00;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"
-     width="33.76017"
-     height="33.76017"
-     x="3.119915"
-     y="3.119915" />
-  <path
-     d="m 20.677967,8.54499 c -7.342801,0 -13.295293,4.954293 -13.295293,11.065751 0,2.088793 0.3647173,3.484376 1.575539,5.150563 L 6.0267418,31.45501 13.560595,29.011117 c 2.221262,1.387962 4.125932,1.665377 7.117372,1.665377 7.3428,0 13.295291,-4.954295 13.295291,-11.065753 0,-6.111458 -5.952491,-11.065751 -13.295291,-11.065751 z"
-     style="fill:#ffffff;fill-opacity:1;stroke:#000000;stroke-width:0.93031836;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"/>
-</svg>
diff --git a/application/basilisk/extensions/pdfjs/content/web/images/annotation-help.svg b/application/basilisk/extensions/pdfjs/content/web/images/annotation-help.svg
deleted file mode 100644
index 00938fefe..000000000
--- a/application/basilisk/extensions/pdfjs/content/web/images/annotation-help.svg
+++ /dev/null
@@ -1,26 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<svg
-   xmlns="http://www.w3.org/2000/svg"
-   width="40"
-   height="40"
-   viewBox="0 0 40 40">
-  <g
-     transform="translate(0,-60)"
-     id="layer1">
-    <rect
-       width="36.460953"
-       height="34.805603"
-       x="1.7695236"
-       y="62.597198"
-       style="fill:#ffff00;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1.30826771;stroke-opacity:1" />
-    <g
-       transform="matrix(0.88763677,0,0,0.88763677,2.2472646,8.9890584)">
-      <path
-         d="M 20,64.526342 C 11.454135,64.526342 4.5263421,71.454135 4.5263421,80 4.5263421,88.545865 11.454135,95.473658 20,95.473658 28.545865,95.473658 35.473658,88.545865 35.473658,80 35.473658,71.454135 28.545865,64.526342 20,64.526342 z m -0.408738,9.488564 c 3.527079,0 6.393832,2.84061 6.393832,6.335441 0,3.494831 -2.866753,6.335441 -6.393832,6.335441 -3.527079,0 -6.393832,-2.84061 -6.393832,-6.335441 0,-3.494831 2.866753,-6.335441 6.393832,-6.335441 z"
-         style="fill:#ffffff;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:1.02768445;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none" />
-      <path
-         d="m 7.2335209,71.819938 4.9702591,4.161823 c -1.679956,2.581606 -1.443939,6.069592 0.159325,8.677725 l -5.1263071,3.424463 c 0.67516,1.231452 3.0166401,3.547686 4.2331971,4.194757 l 3.907728,-4.567277 c 2.541952,1.45975 5.730694,1.392161 8.438683,-0.12614 l 3.469517,6.108336 c 1.129779,-0.44367 4.742234,-3.449633 5.416358,-5.003859 l -5.46204,-4.415541 c 1.44319,-2.424098 1.651175,-5.267515 0.557303,-7.748623 l 5.903195,-3.833951 C 33.14257,71.704996 30.616217,69.018606 29.02952,67.99296 l -4.118813,4.981678 C 22.411934,71.205099 18.900853,70.937534 16.041319,72.32916 l -3.595408,-5.322091 c -1.345962,0.579488 -4.1293881,2.921233 -5.2123901,4.812869 z m 8.1010311,3.426672 c 2.75284,-2.446266 6.769149,-2.144694 9.048998,0.420874 2.279848,2.56557 2.113919,6.596919 -0.638924,9.043185 -2.752841,2.446267 -6.775754,2.13726 -9.055604,-0.428308 -2.279851,-2.565568 -2.107313,-6.589485 0.64553,-9.035751 z"
-         style="fill:#000000;fill-opacity:1;stroke:none" />
-    </g>
-  </g>
-</svg>
diff --git a/application/basilisk/extensions/pdfjs/content/web/images/annotation-insert.svg b/application/basilisk/extensions/pdfjs/content/web/images/annotation-insert.svg
deleted file mode 100644
index 519ef6826..000000000
--- a/application/basilisk/extensions/pdfjs/content/web/images/annotation-insert.svg
+++ /dev/null
@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<svg
-   xmlns="http://www.w3.org/2000/svg"
-   width="64"
-   height="64"
-   viewBox="0 0 64 64">
-  <path
-     d="M 32.003143,1.4044602 57.432701,62.632577 6.5672991,62.627924 z"
-     style="fill:#ffff00;fill-opacity:0.94117647;fill-rule:nonzero;stroke:#000000;stroke-width:1.00493038;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none" />
-</svg>
diff --git a/application/basilisk/extensions/pdfjs/content/web/images/annotation-key.svg b/application/basilisk/extensions/pdfjs/content/web/images/annotation-key.svg
deleted file mode 100644
index 8d09d5378..000000000
--- a/application/basilisk/extensions/pdfjs/content/web/images/annotation-key.svg
+++ /dev/null
@@ -1,11 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<svg
-   xmlns="http://www.w3.org/2000/svg"
-   width="64"
-   height="64"
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-'use strict';
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-    return substArguments(value, args);
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-      return;
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-    var key = element.dataset.l10nId;
-    var data = getL10nData(key);
-    if (!data) {
-      return;
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-    // get arguments (if any)
-    // TODO: more flexible parser?
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-      try {
-        args = JSON.parse(element.dataset.l10nArgs);
-      } catch (e) {
-        console.warn('[l10n] could not parse arguments for #' + key + '');
-      }
-    }
-
-    // translate element
-    // TODO: security check?
-    for (var k in data) {
-      element[k] = substArguments(data[k], args);
-    }
-  }
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-  function translateFragment(element) {
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-      // http://www.w3.org/International/questions/qa-scripts
-      // Arabic, Hebrew, Farsi, Pashto, Urdu
-      var rtlList = ['ar', 'he', 'fa', 'ps', 'ur'];
-
-      // use the short language code for "full" codes like 'ar-sa' (issue 5440)
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-
-      return (rtlList.indexOf(shortCode) >= 0) ? 'rtl' : 'ltr';
-    },
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-    setExternalLocalizerServices: function (externalLocalizerServices) {
-      gExternalLocalizerServices = externalLocalizerServices;
-
-      // ... in case if we missed DOMContentLoaded above.
-      if (window.document.readyState === 'interactive' ||
-          window.document.readyState === 'complete') {
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-    // translate an element or document fragment
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-  };
-})(this);
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deleted file mode 100644
index 74b6fab86..000000000
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-}
-html[dir="rtl"] .secondaryToolbarButton {
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-html[dir="rtl"] .secondaryToolbarButton.bookmark {
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-html[dir="ltr"] .secondaryToolbarButton > span {
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-html[dir='ltr'] .outlineWithDeepNesting > .outlineItem,
-html[dir='ltr'] .outlineItem > .outlineItems {
-  margin-left: 20px;
-}
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-html[dir='rtl'] .outlineWithDeepNesting > .outlineItem,
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-html[dir='ltr'] .outlineItem > a {
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-}
-html[dir='ltr'] .attachmentsItem > button {
-  padding: 2px 0 3px 7px;
-  text-align: left;
-}
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-html[dir='rtl'] .outlineItem > a {
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-html[dir='rtl'] .attachmentsItem > button {
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-  position: absolute;
-}
-html[dir='ltr'] .outlineItemToggler.outlineItemsHidden::before {
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-}
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-}
-html[dir='ltr'] .outlineItemToggler {
-  float: left;
-}
-html[dir='rtl'] .outlineItemToggler {
-  float: right;
-}
-html[dir='ltr'] .outlineItemToggler::before {
-  right: 4px;
-}
-html[dir='rtl'] .outlineItemToggler::before {
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-  font-style: italic;
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-
-/* TODO: file FF bug to support ::-moz-selection:window-inactive
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-::selection { background: rgba(0,0,255,0.3); }
-::-moz-selection { background: rgba(0,0,255,0.3); }
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-  text-align: center;
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-
-#overlayContainer > .container > .dialog {
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-  padding: 15px;
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-  color: hsl(0,0%,85%);
-  font-size: 12px;
-  line-height: 14px;
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-
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-}
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-}
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-}
-html[dir='rtl'] #documentPropertiesOverlay .row > * {
-  text-align: right;
-}
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-  word-wrap: break-word;
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-  }
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-
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-  }
-
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-  }
-  html[dir='rtl'] .toolbarButton#sidebarToggle::before {
-    content: url(images/toolbarButton-sidebarToggle-rtl@2x.png);
-  }
-
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-    content: url(images/toolbarButton-secondaryToolbarToggle@2x.png);
-  }
-  html[dir='rtl'] .toolbarButton#secondaryToolbarToggle::before {
-    content: url(images/toolbarButton-secondaryToolbarToggle-rtl@2x.png);
-  }
-
-  html[dir='ltr'] .toolbarButton.findPrevious::before {
-    content: url(images/findbarButton-previous@2x.png);
-  }
-  html[dir='rtl'] .toolbarButton.findPrevious::before {
-    content: url(images/findbarButton-previous-rtl@2x.png);
-  }
-
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-    content: url(images/findbarButton-next@2x.png);
-  }
-  html[dir='rtl'] .toolbarButton.findNext::before {
-    content: url(images/findbarButton-next-rtl@2x.png);
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-
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-  }
-  html[dir='rtl'] .toolbarButton.pageUp::before {
-    content: url(images/toolbarButton-pageUp-rtl@2x.png);
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-
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-    content: url(images/toolbarButton-pageDown@2x.png);
-  }
-  html[dir='rtl'] .toolbarButton.pageDown::before {
-    content: url(images/toolbarButton-pageDown-rtl@2x.png);
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-
-  .toolbarButton.zoomIn::before {
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-  html[dir="rtl"] #viewOutline.toolbarButton::before {
-    content: url(images/toolbarButton-viewOutline-rtl@2x.png);
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-  }
-
-  .secondaryToolbarButton.handTool::before {
-    content: url(images/secondaryToolbarButton-handTool@2x.png);
-  }
-
-  .secondaryToolbarButton.documentProperties::before {
-    content: url(images/secondaryToolbarButton-documentProperties@2x.png);
-  }
-
-  .outlineItemToggler::before {
-    transform: scale(0.5);
-    top: -1px;
-    content: url(images/treeitem-expanded@2x.png);
-  }
-  html[dir='ltr'] .outlineItemToggler.outlineItemsHidden::before {
-    content: url(images/treeitem-collapsed@2x.png);
-  }
-  html[dir='rtl'] .outlineItemToggler.outlineItemsHidden::before {
-    content: url(images/treeitem-collapsed-rtl@2x.png);
-  }
-  html[dir='ltr'] .outlineItemToggler::before {
-    right: 0;
-  }
-  html[dir='rtl'] .outlineItemToggler::before {
-    left: 0;
-  }
-}
-
-@media print {
-  /* General rules for printing. */
-  body {
-    background: transparent none;
-  }
-
-  /* Rules for browsers that don't support mozPrintCallback. */
-  #sidebarContainer, #secondaryToolbar, .toolbar, #loadingBox, #errorWrapper, .textLayer {
-    display: none;
-  }
-  #viewerContainer {
-    overflow: visible;
-  }
-
-  #mainContainer, #viewerContainer, .page, .page canvas {
-    position: static;
-    padding: 0;
-    margin: 0;
-  }
-
-  .page {
-    float: left;
-    display: none;
-    border: none;
-    box-shadow: none;
-    background-clip: content-box;
-    background-color: white;
-  }
-
-  .page[data-loaded] {
-    display: block;
-  }
-
-  .fileInput {
-    display: none;
-  }
-
-  /* Rules for browsers that support PDF.js printing */
-  body[data-pdfjsprinting] #outerContainer {
-    display: none;
-  }
-  body[data-pdfjsprinting] #printContainer {
-    display: block;
-  }
-  #printContainer {
-    height: 100%;
-  }
-  /* wrapper around (scaled) print canvas elements */
-  #printContainer > div {
-    position: relative;
-    top: 0;
-    left: 0;
-    width: 1px;
-    height: 1px;
-    overflow: visible;
-    page-break-after: always;
-    page-break-inside: avoid;
-  }
-  #printContainer canvas,
-  #printContainer img {
-    display: block;
-  }
-}
-
-.visibleLargeView,
-.visibleMediumView,
-.visibleSmallView {
-  display: none;
-}
-
-@media all and (max-width: 1040px) {
-  #outerContainer.sidebarMoving #toolbarViewerMiddle,
-  #outerContainer.sidebarOpen #toolbarViewerMiddle {
-    display: table;
-    margin: auto;
-    left: auto;
-    position: inherit;
-    transform: none;
-  }
-}
-
-@media all and (max-width: 980px) {
-  .sidebarMoving .hiddenLargeView,
-  .sidebarOpen .hiddenLargeView {
-    display: none;
-  }
-  .sidebarMoving .visibleLargeView,
-  .sidebarOpen .visibleLargeView {
-    display: inherit;
-  }
-}
-
-@media all and (max-width: 900px) {
-  #toolbarViewerMiddle {
-    display: table;
-    margin: auto;
-    left: auto;
-    position: inherit;
-    transform: none;
-  }
-  .sidebarMoving .hiddenMediumView,
-  .sidebarOpen .hiddenMediumView {
-    display: none;
-  }
-  .sidebarMoving .visibleMediumView,
-  .sidebarOpen .visibleMediumView {
-    display: inherit;
-  }
-}
-
-@media all and (max-width: 840px) {
-  #sidebarContainer {
-    top: 32px;
-    z-index: 100;
-  }
-  .loadingInProgress #sidebarContainer {
-    top: 37px;
-  }
-  #sidebarContent {
-    top: 32px;
-    background-color: hsla(0,0%,0%,.7);
-  }
-
-  html[dir='ltr'] #outerContainer.sidebarOpen > #mainContainer {
-    left: 0px;
-  }
-  html[dir='rtl'] #outerContainer.sidebarOpen > #mainContainer {
-    right: 0px;
-  }
-
-  #outerContainer .hiddenLargeView,
-  #outerContainer .hiddenMediumView {
-    display: inherit;
-  }
-  #outerContainer .visibleLargeView,
-  #outerContainer .visibleMediumView {
-    display: none;
-  }
-}
-
-@media all and (max-width: 770px) {
-  #outerContainer .hiddenLargeView {
-    display: none;
-  }
-  #outerContainer .visibleLargeView {
-    display: inherit;
-  }
-}
-
-@media all and (max-width: 700px) {
-  #outerContainer .hiddenMediumView {
-    display: none;
-  }
-  #outerContainer .visibleMediumView {
-    display: inherit;
-  }
-}
-
-@media all and (max-width: 640px) {
-  .hiddenSmallView {
-    display: none;
-  }
-  .visibleSmallView {
-    display: inherit;
-  }
-  .toolbarButtonSpacer {
-    width: 0;
-  }
-}
-
-@media all and (max-width: 535px) {
-  #scaleSelectContainer {
-    display: none;
-  }
-}
diff --git a/application/basilisk/extensions/pdfjs/content/web/viewer.html b/application/basilisk/extensions/pdfjs/content/web/viewer.html
deleted file mode 100644
index 3a06aa7b1..000000000
--- a/application/basilisk/extensions/pdfjs/content/web/viewer.html
+++ /dev/null
@@ -1,337 +0,0 @@
-<!DOCTYPE html>
-<!--
-Copyright 2012 Mozilla Foundation
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-
-Adobe CMap resources are covered by their own copyright but the same license:
-
-    Copyright 1990-2015 Adobe Systems Incorporated.
-
-See https://github.com/adobe-type-tools/cmap-resources
--->
-<html dir="ltr" mozdisallowselectionprint moznomarginboxes>
-  <head>
-    <meta charset="utf-8">
-    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
-    <title>PDF.js viewer</title>
-
-<!-- This snippet is used in the Firefox extension (included from viewer.html) -->
-<base href="resource://pdf.js/web/">
-<script src="l10n.js"></script>
-<script src="../build/pdf.js"></script>
-
-
-    <link rel="stylesheet" href="viewer.css">
-
-
-
-
-
-
-    <script src="viewer.js"></script>
-
-  </head>
-
-  <body tabindex="1" class="loadingInProgress">
-    <div id="outerContainer">
-
-      <div id="sidebarContainer">
-        <div id="toolbarSidebar">
-          <div class="splitToolbarButton toggled">
-            <button id="viewThumbnail" class="toolbarButton group toggled" title="Show Thumbnails" tabindex="2" data-l10n-id="thumbs">
-               <span data-l10n-id="thumbs_label">Thumbnails</span>
-            </button>
-            <button id="viewOutline" class="toolbarButton group" title="Show Document Outline (double-click to expand/collapse all items)" tabindex="3" data-l10n-id="document_outline">
-               <span data-l10n-id="document_outline_label">Document Outline</span>
-            </button>
-            <button id="viewAttachments" class="toolbarButton group" title="Show Attachments" tabindex="4" data-l10n-id="attachments">
-               <span data-l10n-id="attachments_label">Attachments</span>
-            </button>
-          </div>
-        </div>
-        <div id="sidebarContent">
-          <div id="thumbnailView">
-          </div>
-          <div id="outlineView" class="hidden">
-          </div>
-          <div id="attachmentsView" class="hidden">
-          </div>
-        </div>
-      </div>  <!-- sidebarContainer -->
-
-      <div id="mainContainer">
-        <div class="findbar hidden doorHanger hiddenSmallView" id="findbar">
-          <label for="findInput" class="toolbarLabel" data-l10n-id="find_label">Find:</label>
-          <input id="findInput" class="toolbarField" tabindex="91">
-          <div class="splitToolbarButton">
-            <button class="toolbarButton findPrevious" title="" id="findPrevious" tabindex="92" data-l10n-id="find_previous">
-              <span data-l10n-id="find_previous_label">Previous</span>
-            </button>
-            <div class="splitToolbarButtonSeparator"></div>
-            <button class="toolbarButton findNext" title="" id="findNext" tabindex="93" data-l10n-id="find_next">
-              <span data-l10n-id="find_next_label">Next</span>
-            </button>
-          </div>
-          <input type="checkbox" id="findHighlightAll" class="toolbarField" tabindex="94">
-          <label for="findHighlightAll" class="toolbarLabel" data-l10n-id="find_highlight">Highlight all</label>
-          <input type="checkbox" id="findMatchCase" class="toolbarField" tabindex="95">
-          <label for="findMatchCase" class="toolbarLabel" data-l10n-id="find_match_case_label">Match case</label>
-          <span id="findResultsCount" class="toolbarLabel hidden"></span>
-          <span id="findMsg" class="toolbarLabel"></span>
-        </div>  <!-- findbar -->
-
-        <div id="secondaryToolbar" class="secondaryToolbar hidden doorHangerRight">
-          <div id="secondaryToolbarButtonContainer">
-            <button id="secondaryPresentationMode" class="secondaryToolbarButton presentationMode visibleLargeView" title="Switch to Presentation Mode" tabindex="51" data-l10n-id="presentation_mode">
-              <span data-l10n-id="presentation_mode_label">Presentation Mode</span>
-            </button>
-
-            <button id="secondaryOpenFile" class="secondaryToolbarButton openFile visibleLargeView" title="Open File" tabindex="52" data-l10n-id="open_file">
-              <span data-l10n-id="open_file_label">Open</span>
-            </button>
-
-            <button id="secondaryPrint" class="secondaryToolbarButton print visibleMediumView" title="Print" tabindex="53" data-l10n-id="print">
-              <span data-l10n-id="print_label">Print</span>
-            </button>
-
-            <button id="secondaryDownload" class="secondaryToolbarButton download visibleMediumView" title="Download" tabindex="54" data-l10n-id="download">
-              <span data-l10n-id="download_label">Download</span>
-            </button>
-
-            <a href="#" id="secondaryViewBookmark" class="secondaryToolbarButton bookmark visibleSmallView" title="Current view (copy or open in new window)" tabindex="55" data-l10n-id="bookmark">
-              <span data-l10n-id="bookmark_label">Current View</span>
-            </a>
-
-            <div class="horizontalToolbarSeparator visibleLargeView"></div>
-
-            <button id="firstPage" class="secondaryToolbarButton firstPage" title="Go to First Page" tabindex="56" data-l10n-id="first_page">
-              <span data-l10n-id="first_page_label">Go to First Page</span>
-            </button>
-            <button id="lastPage" class="secondaryToolbarButton lastPage" title="Go to Last Page" tabindex="57" data-l10n-id="last_page">
-              <span data-l10n-id="last_page_label">Go to Last Page</span>
-            </button>
-
-            <div class="horizontalToolbarSeparator"></div>
-
-            <button id="pageRotateCw" class="secondaryToolbarButton rotateCw" title="Rotate Clockwise" tabindex="58" data-l10n-id="page_rotate_cw">
-              <span data-l10n-id="page_rotate_cw_label">Rotate Clockwise</span>
-            </button>
-            <button id="pageRotateCcw" class="secondaryToolbarButton rotateCcw" title="Rotate Counterclockwise" tabindex="59" data-l10n-id="page_rotate_ccw">
-              <span data-l10n-id="page_rotate_ccw_label">Rotate Counterclockwise</span>
-            </button>
-
-            <div class="horizontalToolbarSeparator"></div>
-
-            <button id="toggleHandTool" class="secondaryToolbarButton handTool" title="Enable hand tool" tabindex="60" data-l10n-id="hand_tool_enable">
-              <span data-l10n-id="hand_tool_enable_label">Enable hand tool</span>
-            </button>
-
-            <div class="horizontalToolbarSeparator"></div>
-
-            <button id="documentProperties" class="secondaryToolbarButton documentProperties" title="Document Properties…" tabindex="61" data-l10n-id="document_properties">
-              <span data-l10n-id="document_properties_label">Document Properties…</span>
-            </button>
-          </div>
-        </div>  <!-- secondaryToolbar -->
-
-        <div class="toolbar">
-          <div id="toolbarContainer">
-            <div id="toolbarViewer">
-              <div id="toolbarViewerLeft">
-                <button id="sidebarToggle" class="toolbarButton" title="Toggle Sidebar" tabindex="11" data-l10n-id="toggle_sidebar">
-                  <span data-l10n-id="toggle_sidebar_label">Toggle Sidebar</span>
-                </button>
-                <div class="toolbarButtonSpacer"></div>
-                <button id="viewFind" class="toolbarButton group hiddenSmallView" title="Find in Document" tabindex="12" data-l10n-id="findbar">
-                   <span data-l10n-id="findbar_label">Find</span>
-                </button>
-                <div class="splitToolbarButton">
-                  <button class="toolbarButton pageUp" title="Previous Page" id="previous" tabindex="13" data-l10n-id="previous">
-                    <span data-l10n-id="previous_label">Previous</span>
-                  </button>
-                  <div class="splitToolbarButtonSeparator"></div>
-                  <button class="toolbarButton pageDown" title="Next Page" id="next" tabindex="14" data-l10n-id="next">
-                    <span data-l10n-id="next_label">Next</span>
-                  </button>
-                </div>
-                <input type="number" id="pageNumber" class="toolbarField pageNumber" title="Page" value="1" size="4" min="1" tabindex="15" data-l10n-id="page">
-                <span id="numPages" class="toolbarLabel"></span>
-              </div>
-              <div id="toolbarViewerRight">
-                <button id="presentationMode" class="toolbarButton presentationMode hiddenLargeView" title="Switch to Presentation Mode" tabindex="31" data-l10n-id="presentation_mode">
-                  <span data-l10n-id="presentation_mode_label">Presentation Mode</span>
-                </button>
-
-                <button id="openFile" class="toolbarButton openFile hiddenLargeView" title="Open File" tabindex="32" data-l10n-id="open_file">
-                  <span data-l10n-id="open_file_label">Open</span>
-                </button>
-
-                <button id="print" class="toolbarButton print hiddenMediumView" title="Print" tabindex="33" data-l10n-id="print">
-                  <span data-l10n-id="print_label">Print</span>
-                </button>
-
-                <button id="download" class="toolbarButton download hiddenMediumView" title="Download" tabindex="34" data-l10n-id="download">
-                  <span data-l10n-id="download_label">Download</span>
-                </button>
-                <a href="#" id="viewBookmark" class="toolbarButton bookmark hiddenSmallView" title="Current view (copy or open in new window)" tabindex="35" data-l10n-id="bookmark">
-                  <span data-l10n-id="bookmark_label">Current View</span>
-                </a>
-
-                <div class="verticalToolbarSeparator hiddenSmallView"></div>
-
-                <button id="secondaryToolbarToggle" class="toolbarButton" title="Tools" tabindex="36" data-l10n-id="tools">
-                  <span data-l10n-id="tools_label">Tools</span>
-                </button>
-              </div>
-              <div id="toolbarViewerMiddle">
-                <div class="splitToolbarButton">
-                  <button id="zoomOut" class="toolbarButton zoomOut" title="Zoom Out" tabindex="21" data-l10n-id="zoom_out">
-                    <span data-l10n-id="zoom_out_label">Zoom Out</span>
-                  </button>
-                  <div class="splitToolbarButtonSeparator"></div>
-                  <button id="zoomIn" class="toolbarButton zoomIn" title="Zoom In" tabindex="22" data-l10n-id="zoom_in">
-                    <span data-l10n-id="zoom_in_label">Zoom In</span>
-                   </button>
-                </div>
-                <span id="scaleSelectContainer" class="dropdownToolbarButton">
-                  <select id="scaleSelect" title="Zoom" tabindex="23" data-l10n-id="zoom">
-                    <option id="pageAutoOption" title="" value="auto" selected="selected" data-l10n-id="page_scale_auto">Automatic Zoom</option>
-                    <option id="pageActualOption" title="" value="page-actual" data-l10n-id="page_scale_actual">Actual Size</option>
-                    <option id="pageFitOption" title="" value="page-fit" data-l10n-id="page_scale_fit">Fit Page</option>
-                    <option id="pageWidthOption" title="" value="page-width" data-l10n-id="page_scale_width">Full Width</option>
-                    <option id="customScaleOption" title="" value="custom" disabled="disabled" hidden="true"></option>
-                    <option title="" value="0.5" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 50 }'>50%</option>
-                    <option title="" value="0.75" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 75 }'>75%</option>
-                    <option title="" value="1" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 100 }'>100%</option>
-                    <option title="" value="1.25" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 125 }'>125%</option>
-                    <option title="" value="1.5" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 150 }'>150%</option>
-                    <option title="" value="2" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 200 }'>200%</option>
-                    <option title="" value="3" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 300 }'>300%</option>
-                    <option title="" value="4" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 400 }'>400%</option>
-                  </select>
-                </span>
-              </div>
-            </div>
-            <div id="loadingBar">
-              <div class="progress">
-                <div class="glimmer">
-                </div>
-              </div>
-            </div>
-          </div>
-        </div>
-
-        <menu type="context" id="viewerContextMenu">
-          <menuitem id="contextFirstPage" label="First Page"
-                    data-l10n-id="first_page"></menuitem>
-          <menuitem id="contextLastPage" label="Last Page"
-                    data-l10n-id="last_page"></menuitem>
-          <menuitem id="contextPageRotateCw" label="Rotate Clockwise"
-                    data-l10n-id="page_rotate_cw"></menuitem>
-          <menuitem id="contextPageRotateCcw" label="Rotate Counter-Clockwise"
-                    data-l10n-id="page_rotate_ccw"></menuitem>
-        </menu>
-
-        <div id="viewerContainer" tabindex="0">
-          <div id="viewer" class="pdfViewer"></div>
-        </div>
-
-        <div id="errorWrapper" hidden='true'>
-          <div id="errorMessageLeft">
-            <span id="errorMessage"></span>
-            <button id="errorShowMore" data-l10n-id="error_more_info">
-              More Information
-            </button>
-            <button id="errorShowLess" data-l10n-id="error_less_info" hidden='true'>
-              Less Information
-            </button>
-          </div>
-          <div id="errorMessageRight">
-            <button id="errorClose" data-l10n-id="error_close">
-              Close
-            </button>
-          </div>
-          <div class="clearBoth"></div>
-          <textarea id="errorMoreInfo" hidden='true' readonly="readonly"></textarea>
-        </div>
-      </div> <!-- mainContainer -->
-
-      <div id="overlayContainer" class="hidden">
-        <div id="passwordOverlay" class="container hidden">
-          <div class="dialog">
-            <div class="row">
-              <p id="passwordText" data-l10n-id="password_label">Enter the password to open this PDF file:</p>
-            </div>
-            <div class="row">
-              <!-- The type="password" attribute is set via script, to prevent warnings in Firefox for all http:// documents. -->
-              <input id="password" class="toolbarField">
-            </div>
-            <div class="buttonRow">
-              <button id="passwordCancel" class="overlayButton"><span data-l10n-id="password_cancel">Cancel</span></button>
-              <button id="passwordSubmit" class="overlayButton"><span data-l10n-id="password_ok">OK</span></button>
-            </div>
-          </div>
-        </div>
-        <div id="documentPropertiesOverlay" class="container hidden">
-          <div class="dialog">
-            <div class="row">
-              <span data-l10n-id="document_properties_file_name">File name:</span> <p id="fileNameField">-</p>
-            </div>
-            <div class="row">
-              <span data-l10n-id="document_properties_file_size">File size:</span> <p id="fileSizeField">-</p>
-            </div>
-            <div class="separator"></div>
-            <div class="row">
-              <span data-l10n-id="document_properties_title">Title:</span> <p id="titleField">-</p>
-            </div>
-            <div class="row">
-              <span data-l10n-id="document_properties_author">Author:</span> <p id="authorField">-</p>
-            </div>
-            <div class="row">
-              <span data-l10n-id="document_properties_subject">Subject:</span> <p id="subjectField">-</p>
-            </div>
-            <div class="row">
-              <span data-l10n-id="document_properties_keywords">Keywords:</span> <p id="keywordsField">-</p>
-            </div>
-            <div class="row">
-              <span data-l10n-id="document_properties_creation_date">Creation Date:</span> <p id="creationDateField">-</p>
-            </div>
-            <div class="row">
-              <span data-l10n-id="document_properties_modification_date">Modification Date:</span> <p id="modificationDateField">-</p>
-            </div>
-            <div class="row">
-              <span data-l10n-id="document_properties_creator">Creator:</span> <p id="creatorField">-</p>
-            </div>
-            <div class="separator"></div>
-            <div class="row">
-              <span data-l10n-id="document_properties_producer">PDF Producer:</span> <p id="producerField">-</p>
-            </div>
-            <div class="row">
-              <span data-l10n-id="document_properties_version">PDF Version:</span> <p id="versionField">-</p>
-            </div>
-            <div class="row">
-              <span data-l10n-id="document_properties_page_count">Page Count:</span> <p id="pageCountField">-</p>
-            </div>
-            <div class="buttonRow">
-              <button id="documentPropertiesClose" class="overlayButton"><span data-l10n-id="document_properties_close">Close</span></button>
-            </div>
-          </div>
-        </div>
-      </div>  <!-- overlayContainer -->
-
-    </div> <!-- outerContainer -->
-    <div id="printContainer"></div>
-  </body>
-</html>
-
diff --git a/application/basilisk/extensions/pdfjs/content/web/viewer.js b/application/basilisk/extensions/pdfjs/content/web/viewer.js
deleted file mode 100644
index 35fef2cd0..000000000
--- a/application/basilisk/extensions/pdfjs/content/web/viewer.js
+++ /dev/null
@@ -1,8671 +0,0 @@
-/* Copyright 2016 Mozilla Foundation
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-'use strict';
-var DEFAULT_URL = 'compressed.tracemonkey-pldi-09.pdf';
-;
-var pdfjsWebLibs;
-{
-  pdfjsWebLibs = { pdfjsWebPDFJS: window.pdfjsDistBuildPdf };
-  (function () {
-    (function (root, factory) {
-      factory(root.pdfjsWebGrabToPan = {});
-    }(this, function (exports) {
-      /**
-       * Construct a GrabToPan instance for a given HTML element.
-       * @param options.element {Element}
-       * @param options.ignoreTarget {function} optional. See `ignoreTarget(node)`
-       * @param options.onActiveChanged {function(boolean)} optional. Called
-       *  when grab-to-pan is (de)activated. The first argument is a boolean that
-       *  shows whether grab-to-pan is activated.
-       */
-      function GrabToPan(options) {
-        this.element = options.element;
-        this.document = options.element.ownerDocument;
-        if (typeof options.ignoreTarget === 'function') {
-          this.ignoreTarget = options.ignoreTarget;
-        }
-        this.onActiveChanged = options.onActiveChanged;
-        // Bind the contexts to ensure that `this` always points to
-        // the GrabToPan instance.
-        this.activate = this.activate.bind(this);
-        this.deactivate = this.deactivate.bind(this);
-        this.toggle = this.toggle.bind(this);
-        this._onmousedown = this._onmousedown.bind(this);
-        this._onmousemove = this._onmousemove.bind(this);
-        this._endPan = this._endPan.bind(this);
-        // This overlay will be inserted in the document when the mouse moves during
-        // a grab operation, to ensure that the cursor has the desired appearance.
-        var overlay = this.overlay = document.createElement('div');
-        overlay.className = 'grab-to-pan-grabbing';
-      }
-      GrabToPan.prototype = {
-        /**
-         * Class name of element which can be grabbed
-         */
-        CSS_CLASS_GRAB: 'grab-to-pan-grab',
-        /**
-         * Bind a mousedown event to the element to enable grab-detection.
-         */
-        activate: function GrabToPan_activate() {
-          if (!this.active) {
-            this.active = true;
-            this.element.addEventListener('mousedown', this._onmousedown, true);
-            this.element.classList.add(this.CSS_CLASS_GRAB);
-            if (this.onActiveChanged) {
-              this.onActiveChanged(true);
-            }
-          }
-        },
-        /**
-         * Removes all events. Any pending pan session is immediately stopped.
-         */
-        deactivate: function GrabToPan_deactivate() {
-          if (this.active) {
-            this.active = false;
-            this.element.removeEventListener('mousedown', this._onmousedown, true);
-            this._endPan();
-            this.element.classList.remove(this.CSS_CLASS_GRAB);
-            if (this.onActiveChanged) {
-              this.onActiveChanged(false);
-            }
-          }
-        },
-        toggle: function GrabToPan_toggle() {
-          if (this.active) {
-            this.deactivate();
-          } else {
-            this.activate();
-          }
-        },
-        /**
-         * Whether to not pan if the target element is clicked.
-         * Override this method to change the default behaviour.
-         *
-         * @param node {Element} The target of the event
-         * @return {boolean} Whether to not react to the click event.
-         */
-        ignoreTarget: function GrabToPan_ignoreTarget(node) {
-          // Use matchesSelector to check whether the clicked element
-          // is (a child of) an input element / link
-          return node[matchesSelector]('a[href], a[href] *, input, textarea, button, button *, select, option');
-        },
-        /**
-         * @private
-         */
-        _onmousedown: function GrabToPan__onmousedown(event) {
-          if (event.button !== 0 || this.ignoreTarget(event.target)) {
-            return;
-          }
-          if (event.originalTarget) {
-            try {
-              event.originalTarget.tagName;
-            } catch (e) {
-              // Mozilla-specific: element is a scrollbar (XUL element)
-              return;
-            }
-          }
-          this.scrollLeftStart = this.element.scrollLeft;
-          this.scrollTopStart = this.element.scrollTop;
-          this.clientXStart = event.clientX;
-          this.clientYStart = event.clientY;
-          this.document.addEventListener('mousemove', this._onmousemove, true);
-          this.document.addEventListener('mouseup', this._endPan, true);
-          // When a scroll event occurs before a mousemove, assume that the user
-          // dragged a scrollbar (necessary for Opera Presto, Safari and IE)
-          // (not needed for Chrome/Firefox)
-          this.element.addEventListener('scroll', this._endPan, true);
-          event.preventDefault();
-          event.stopPropagation();
-          var focusedElement = document.activeElement;
-          if (focusedElement && !focusedElement.contains(event.target)) {
-            focusedElement.blur();
-          }
-        },
-        /**
-         * @private
-         */
-        _onmousemove: function GrabToPan__onmousemove(event) {
-          this.element.removeEventListener('scroll', this._endPan, true);
-          if (isLeftMouseReleased(event)) {
-            this._endPan();
-            return;
-          }
-          var xDiff = event.clientX - this.clientXStart;
-          var yDiff = event.clientY - this.clientYStart;
-          var scrollTop = this.scrollTopStart - yDiff;
-          var scrollLeft = this.scrollLeftStart - xDiff;
-          if (this.element.scrollTo) {
-            this.element.scrollTo({
-              top: scrollTop,
-              left: scrollLeft,
-              behavior: 'instant'
-            });
-          } else {
-            this.element.scrollTop = scrollTop;
-            this.element.scrollLeft = scrollLeft;
-          }
-          if (!this.overlay.parentNode) {
-            document.body.appendChild(this.overlay);
-          }
-        },
-        /**
-         * @private
-         */
-        _endPan: function GrabToPan__endPan() {
-          this.element.removeEventListener('scroll', this._endPan, true);
-          this.document.removeEventListener('mousemove', this._onmousemove, true);
-          this.document.removeEventListener('mouseup', this._endPan, true);
-          if (this.overlay.parentNode) {
-            this.overlay.parentNode.removeChild(this.overlay);
-          }
-        }
-      };
-      // Get the correct (vendor-prefixed) name of the matches method.
-      var matchesSelector;
-      [
-        'webkitM',
-        'mozM',
-        'msM',
-        'oM',
-        'm'
-      ].some(function (prefix) {
-        var name = prefix + 'atches';
-        if (name in document.documentElement) {
-          matchesSelector = name;
-        }
-        name += 'Selector';
-        if (name in document.documentElement) {
-          matchesSelector = name;
-        }
-        return matchesSelector;
-      });
-      // If found, then truthy, and [].some() ends.
-      // Browser sniffing because it's impossible to feature-detect
-      // whether event.which for onmousemove is reliable
-      var isNotIEorIsIE10plus = !document.documentMode || document.documentMode > 9;
-      var chrome = window.chrome;
-      var isChrome15OrOpera15plus = chrome && (chrome.webstore || chrome.app);
-      //                                       ^ Chrome 15+       ^ Opera 15+
-      var isSafari6plus = /Apple/.test(navigator.vendor) && /Version\/([6-9]\d*|[1-5]\d+)/.test(navigator.userAgent);
-      /**
-       * Whether the left mouse is not pressed.
-       * @param event {MouseEvent}
-       * @return {boolean} True if the left mouse button is not pressed.
-       *                   False if unsure or if the left mouse button is pressed.
-       */
-      function isLeftMouseReleased(event) {
-        if ('buttons' in event && isNotIEorIsIE10plus) {
-          // http://www.w3.org/TR/DOM-Level-3-Events/#events-MouseEvent-buttons
-          // Firefox 15+
-          // Internet Explorer 10+
-          return !(event.buttons & 1);
-        }
-        if (isChrome15OrOpera15plus || isSafari6plus) {
-          // Chrome 14+
-          // Opera 15+
-          // Safari 6.0+
-          return event.which === 0;
-        }
-      }
-      exports.GrabToPan = GrabToPan;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebOverlayManager = {});
-    }(this, function (exports) {
-      var OverlayManager = {
-        overlays: {},
-        active: null,
-        /**
-         * @param {string} name The name of the overlay that is registered.
-         * @param {HTMLDivElement} element The overlay's DOM element.
-         * @param {function} callerCloseMethod (optional) The method that, if present,
-         *                   will call OverlayManager.close from the Object
-         *                   registering the overlay. Access to this method is
-         *                   necessary in order to run cleanup code when e.g.
-         *                   the overlay is force closed. The default is null.
-         * @param {boolean} canForceClose (optional) Indicates if opening the overlay
-         *                  will close an active overlay. The default is false.
-         * @returns {Promise} A promise that is resolved when the overlay has been
-         *                    registered.
-         */
-        register: function overlayManagerRegister(name, element, callerCloseMethod, canForceClose) {
-          return new Promise(function (resolve) {
-            var container;
-            if (!name || !element || !(container = element.parentNode)) {
-              throw new Error('Not enough parameters.');
-            } else if (this.overlays[name]) {
-              throw new Error('The overlay is already registered.');
-            }
-            this.overlays[name] = {
-              element: element,
-              container: container,
-              callerCloseMethod: callerCloseMethod || null,
-              canForceClose: canForceClose || false
-            };
-            resolve();
-          }.bind(this));
-        },
-        /**
-         * @param {string} name The name of the overlay that is unregistered.
-         * @returns {Promise} A promise that is resolved when the overlay has been
-         *                    unregistered.
-         */
-        unregister: function overlayManagerUnregister(name) {
-          return new Promise(function (resolve) {
-            if (!this.overlays[name]) {
-              throw new Error('The overlay does not exist.');
-            } else if (this.active === name) {
-              throw new Error('The overlay cannot be removed while it is active.');
-            }
-            delete this.overlays[name];
-            resolve();
-          }.bind(this));
-        },
-        /**
-         * @param {string} name The name of the overlay that should be opened.
-         * @returns {Promise} A promise that is resolved when the overlay has been
-         *                    opened.
-         */
-        open: function overlayManagerOpen(name) {
-          return new Promise(function (resolve) {
-            if (!this.overlays[name]) {
-              throw new Error('The overlay does not exist.');
-            } else if (this.active) {
-              if (this.overlays[name].canForceClose) {
-                this._closeThroughCaller();
-              } else if (this.active === name) {
-                throw new Error('The overlay is already active.');
-              } else {
-                throw new Error('Another overlay is currently active.');
-              }
-            }
-            this.active = name;
-            this.overlays[this.active].element.classList.remove('hidden');
-            this.overlays[this.active].container.classList.remove('hidden');
-            window.addEventListener('keydown', this._keyDown);
-            resolve();
-          }.bind(this));
-        },
-        /**
-         * @param {string} name The name of the overlay that should be closed.
-         * @returns {Promise} A promise that is resolved when the overlay has been
-         *                    closed.
-         */
-        close: function overlayManagerClose(name) {
-          return new Promise(function (resolve) {
-            if (!this.overlays[name]) {
-              throw new Error('The overlay does not exist.');
-            } else if (!this.active) {
-              throw new Error('The overlay is currently not active.');
-            } else if (this.active !== name) {
-              throw new Error('Another overlay is currently active.');
-            }
-            this.overlays[this.active].container.classList.add('hidden');
-            this.overlays[this.active].element.classList.add('hidden');
-            this.active = null;
-            window.removeEventListener('keydown', this._keyDown);
-            resolve();
-          }.bind(this));
-        },
-        /**
-         * @private
-         */
-        _keyDown: function overlayManager_keyDown(evt) {
-          var self = OverlayManager;
-          if (self.active && evt.keyCode === 27) {
-            // Esc key.
-            self._closeThroughCaller();
-            evt.preventDefault();
-          }
-        },
-        /**
-         * @private
-         */
-        _closeThroughCaller: function overlayManager_closeThroughCaller() {
-          if (this.overlays[this.active].callerCloseMethod) {
-            this.overlays[this.active].callerCloseMethod();
-          }
-          if (this.active) {
-            this.close(this.active);
-          }
-        }
-      };
-      exports.OverlayManager = OverlayManager;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebPDFRenderingQueue = {});
-    }(this, function (exports) {
-      var CLEANUP_TIMEOUT = 30000;
-      var RenderingStates = {
-        INITIAL: 0,
-        RUNNING: 1,
-        PAUSED: 2,
-        FINISHED: 3
-      };
-      /**
-       * Controls rendering of the views for pages and thumbnails.
-       * @class
-       */
-      var PDFRenderingQueue = function PDFRenderingQueueClosure() {
-        /**
-         * @constructs
-         */
-        function PDFRenderingQueue() {
-          this.pdfViewer = null;
-          this.pdfThumbnailViewer = null;
-          this.onIdle = null;
-          this.highestPriorityPage = null;
-          this.idleTimeout = null;
-          this.printing = false;
-          this.isThumbnailViewEnabled = false;
-        }
-        PDFRenderingQueue.prototype = /** @lends PDFRenderingQueue.prototype */
-        {
-          /**
-           * @param {PDFViewer} pdfViewer
-           */
-          setViewer: function PDFRenderingQueue_setViewer(pdfViewer) {
-            this.pdfViewer = pdfViewer;
-          },
-          /**
-           * @param {PDFThumbnailViewer} pdfThumbnailViewer
-           */
-          setThumbnailViewer: function PDFRenderingQueue_setThumbnailViewer(pdfThumbnailViewer) {
-            this.pdfThumbnailViewer = pdfThumbnailViewer;
-          },
-          /**
-           * @param {IRenderableView} view
-           * @returns {boolean}
-           */
-          isHighestPriority: function PDFRenderingQueue_isHighestPriority(view) {
-            return this.highestPriorityPage === view.renderingId;
-          },
-          renderHighestPriority: function PDFRenderingQueue_renderHighestPriority(currentlyVisiblePages) {
-            if (this.idleTimeout) {
-              clearTimeout(this.idleTimeout);
-              this.idleTimeout = null;
-            }
-            // Pages have a higher priority than thumbnails, so check them first.
-            if (this.pdfViewer.forceRendering(currentlyVisiblePages)) {
-              return;
-            }
-            // No pages needed rendering so check thumbnails.
-            if (this.pdfThumbnailViewer && this.isThumbnailViewEnabled) {
-              if (this.pdfThumbnailViewer.forceRendering()) {
-                return;
-              }
-            }
-            if (this.printing) {
-              // If printing is currently ongoing do not reschedule cleanup.
-              return;
-            }
-            if (this.onIdle) {
-              this.idleTimeout = setTimeout(this.onIdle.bind(this), CLEANUP_TIMEOUT);
-            }
-          },
-          getHighestPriority: function PDFRenderingQueue_getHighestPriority(visible, views, scrolledDown) {
-            // The state has changed figure out which page has the highest priority to
-            // render next (if any).
-            // Priority:
-            // 1 visible pages
-            // 2 if last scrolled down page after the visible pages
-            // 2 if last scrolled up page before the visible pages
-            var visibleViews = visible.views;
-            var numVisible = visibleViews.length;
-            if (numVisible === 0) {
-              return false;
-            }
-            for (var i = 0; i < numVisible; ++i) {
-              var view = visibleViews[i].view;
-              if (!this.isViewFinished(view)) {
-                return view;
-              }
-            }
-            // All the visible views have rendered, try to render next/previous pages.
-            if (scrolledDown) {
-              var nextPageIndex = visible.last.id;
-              // ID's start at 1 so no need to add 1.
-              if (views[nextPageIndex] && !this.isViewFinished(views[nextPageIndex])) {
-                return views[nextPageIndex];
-              }
-            } else {
-              var previousPageIndex = visible.first.id - 2;
-              if (views[previousPageIndex] && !this.isViewFinished(views[previousPageIndex])) {
-                return views[previousPageIndex];
-              }
-            }
-            // Everything that needs to be rendered has been.
-            return null;
-          },
-          /**
-           * @param {IRenderableView} view
-           * @returns {boolean}
-           */
-          isViewFinished: function PDFRenderingQueue_isViewFinished(view) {
-            return view.renderingState === RenderingStates.FINISHED;
-          },
-          /**
-           * Render a page or thumbnail view. This calls the appropriate function
-           * based on the views state. If the view is already rendered it will return
-           * false.
-           * @param {IRenderableView} view
-           */
-          renderView: function PDFRenderingQueue_renderView(view) {
-            var state = view.renderingState;
-            switch (state) {
-            case RenderingStates.FINISHED:
-              return false;
-            case RenderingStates.PAUSED:
-              this.highestPriorityPage = view.renderingId;
-              view.resume();
-              break;
-            case RenderingStates.RUNNING:
-              this.highestPriorityPage = view.renderingId;
-              break;
-            case RenderingStates.INITIAL:
-              this.highestPriorityPage = view.renderingId;
-              var continueRendering = function () {
-                this.renderHighestPriority();
-              }.bind(this);
-              view.draw().then(continueRendering, continueRendering);
-              break;
-            }
-            return true;
-          }
-        };
-        return PDFRenderingQueue;
-      }();
-      exports.RenderingStates = RenderingStates;
-      exports.PDFRenderingQueue = PDFRenderingQueue;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebPreferences = {});
-    }(this, function (exports) {
-      var defaultPreferences;
-      defaultPreferences = Promise.resolve({
-        "showPreviousViewOnLoad": true,
-        "defaultZoomValue": "",
-        "sidebarViewOnLoad": 0,
-        "enableHandToolOnLoad": false,
-        "enableWebGL": false,
-        "pdfBugEnabled": false,
-        "disableRange": false,
-        "disableStream": false,
-        "disableAutoFetch": false,
-        "disableFontFace": false,
-        "disableTextLayer": false,
-        "useOnlyCssZoom": false,
-        "externalLinkTarget": 0,
-        "enhanceTextSelection": false,
-        "renderInteractiveForms": false,
-        "disablePageLabels": false
-      });
-      function cloneObj(obj) {
-        var result = {};
-        for (var i in obj) {
-          if (Object.prototype.hasOwnProperty.call(obj, i)) {
-            result[i] = obj[i];
-          }
-        }
-        return result;
-      }
-      /**
-       * Preferences - Utility for storing persistent settings.
-       *   Used for settings that should be applied to all opened documents,
-       *   or every time the viewer is loaded.
-       */
-      var Preferences = {
-        prefs: null,
-        isInitializedPromiseResolved: false,
-        initializedPromise: null,
-        /**
-         * Initialize and fetch the current preference values from storage.
-         * @return {Promise} A promise that is resolved when the preferences
-         *                   have been initialized.
-         */
-        initialize: function preferencesInitialize() {
-          return this.initializedPromise = defaultPreferences.then(function (defaults) {
-            Object.defineProperty(this, 'defaults', {
-              value: Object.freeze(defaults),
-              writable: false,
-              enumerable: true,
-              configurable: false
-            });
-            this.prefs = cloneObj(defaults);
-            return this._readFromStorage(defaults);
-          }.bind(this)).then(function (prefObj) {
-            this.isInitializedPromiseResolved = true;
-            if (prefObj) {
-              this.prefs = prefObj;
-            }
-          }.bind(this));
-        },
-        /**
-         * Stub function for writing preferences to storage.
-         * NOTE: This should be overridden by a build-specific function defined below.
-         * @param {Object} prefObj The preferences that should be written to storage.
-         * @return {Promise} A promise that is resolved when the preference values
-         *                   have been written.
-         */
-        _writeToStorage: function preferences_writeToStorage(prefObj) {
-          return Promise.resolve();
-        },
-        /**
-         * Stub function for reading preferences from storage.
-         * NOTE: This should be overridden by a build-specific function defined below.
-         * @param {Object} prefObj The preferences that should be read from storage.
-         * @return {Promise} A promise that is resolved with an {Object} containing
-         *                   the preferences that have been read.
-         */
-        _readFromStorage: function preferences_readFromStorage(prefObj) {
-          return Promise.resolve();
-        },
-        /**
-         * Reset the preferences to their default values and update storage.
-         * @return {Promise} A promise that is resolved when the preference values
-         *                   have been reset.
-         */
-        reset: function preferencesReset() {
-          return this.initializedPromise.then(function () {
-            this.prefs = cloneObj(this.defaults);
-            return this._writeToStorage(this.defaults);
-          }.bind(this));
-        },
-        /**
-         * Replace the current preference values with the ones from storage.
-         * @return {Promise} A promise that is resolved when the preference values
-         *                   have been updated.
-         */
-        reload: function preferencesReload() {
-          return this.initializedPromise.then(function () {
-            this._readFromStorage(this.defaults).then(function (prefObj) {
-              if (prefObj) {
-                this.prefs = prefObj;
-              }
-            }.bind(this));
-          }.bind(this));
-        },
-        /**
-         * Set the value of a preference.
-         * @param {string} name The name of the preference that should be changed.
-         * @param {boolean|number|string} value The new value of the preference.
-         * @return {Promise} A promise that is resolved when the value has been set,
-         *                   provided that the preference exists and the types match.
-         */
-        set: function preferencesSet(name, value) {
-          return this.initializedPromise.then(function () {
-            if (this.defaults[name] === undefined) {
-              throw new Error('preferencesSet: \'' + name + '\' is undefined.');
-            } else if (value === undefined) {
-              throw new Error('preferencesSet: no value is specified.');
-            }
-            var valueType = typeof value;
-            var defaultType = typeof this.defaults[name];
-            if (valueType !== defaultType) {
-              if (valueType === 'number' && defaultType === 'string') {
-                value = value.toString();
-              } else {
-                throw new Error('Preferences_set: \'' + value + '\' is a \"' + valueType + '\", expected \"' + defaultType + '\".');
-              }
-            } else {
-              if (valueType === 'number' && (value | 0) !== value) {
-                throw new Error('Preferences_set: \'' + value + '\' must be an \"integer\".');
-              }
-            }
-            this.prefs[name] = value;
-            return this._writeToStorage(this.prefs);
-          }.bind(this));
-        },
-        /**
-         * Get the value of a preference.
-         * @param {string} name The name of the preference whose value is requested.
-         * @return {Promise} A promise that is resolved with a {boolean|number|string}
-         *                   containing the value of the preference.
-         */
-        get: function preferencesGet(name) {
-          return this.initializedPromise.then(function () {
-            var defaultValue = this.defaults[name];
-            if (defaultValue === undefined) {
-              throw new Error('preferencesGet: \'' + name + '\' is undefined.');
-            } else {
-              var prefValue = this.prefs[name];
-              if (prefValue !== undefined) {
-                return prefValue;
-              }
-            }
-            return defaultValue;
-          }.bind(this));
-        }
-      };
-      exports.Preferences = Preferences;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebViewHistory = {});
-    }(this, function (exports) {
-      var DEFAULT_VIEW_HISTORY_CACHE_SIZE = 20;
-      /**
-       * View History - This is a utility for saving various view parameters for
-       *                recently opened files.
-       *
-       * The way that the view parameters are stored depends on how PDF.js is built,
-       * for 'gulp <flag>' the following cases exist:
-       *  - FIREFOX or MOZCENTRAL - uses sessionStorage.
-       *  - GENERIC or CHROME     - uses localStorage, if it is available.
-       */
-      var ViewHistory = function ViewHistoryClosure() {
-        function ViewHistory(fingerprint, cacheSize) {
-          this.fingerprint = fingerprint;
-          this.cacheSize = cacheSize || DEFAULT_VIEW_HISTORY_CACHE_SIZE;
-          this.isInitializedPromiseResolved = false;
-          this.initializedPromise = this._readFromStorage().then(function (databaseStr) {
-            this.isInitializedPromiseResolved = true;
-            var database = JSON.parse(databaseStr || '{}');
-            if (!('files' in database)) {
-              database.files = [];
-            }
-            if (database.files.length >= this.cacheSize) {
-              database.files.shift();
-            }
-            var index;
-            for (var i = 0, length = database.files.length; i < length; i++) {
-              var branch = database.files[i];
-              if (branch.fingerprint === this.fingerprint) {
-                index = i;
-                break;
-              }
-            }
-            if (typeof index !== 'number') {
-              index = database.files.push({ fingerprint: this.fingerprint }) - 1;
-            }
-            this.file = database.files[index];
-            this.database = database;
-          }.bind(this));
-        }
-        ViewHistory.prototype = {
-          _writeToStorage: function ViewHistory_writeToStorage() {
-            return new Promise(function (resolve) {
-              var databaseStr = JSON.stringify(this.database);
-              sessionStorage.setItem('pdfjsHistory', databaseStr);
-              resolve();
-            }.bind(this));
-          },
-          _readFromStorage: function ViewHistory_readFromStorage() {
-            return new Promise(function (resolve) {
-              resolve(sessionStorage.getItem('pdfjsHistory'));
-            });
-          },
-          set: function ViewHistory_set(name, val) {
-            if (!this.isInitializedPromiseResolved) {
-              return;
-            }
-            this.file[name] = val;
-            return this._writeToStorage();
-          },
-          setMultiple: function ViewHistory_setMultiple(properties) {
-            if (!this.isInitializedPromiseResolved) {
-              return;
-            }
-            for (var name in properties) {
-              this.file[name] = properties[name];
-            }
-            return this._writeToStorage();
-          },
-          get: function ViewHistory_get(name, defaultValue) {
-            if (!this.isInitializedPromiseResolved) {
-              return defaultValue;
-            }
-            return this.file[name] || defaultValue;
-          }
-        };
-        return ViewHistory;
-      }();
-      exports.ViewHistory = ViewHistory;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebDownloadManager = {}, root.pdfjsWebPDFJS);
-    }(this, function (exports, pdfjsLib) {
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebHandTool = {}, root.pdfjsWebGrabToPan, root.pdfjsWebPreferences);
-    }(this, function (exports, grabToPan, preferences) {
-      var GrabToPan = grabToPan.GrabToPan;
-      var Preferences = preferences.Preferences;
-      /**
-       * @typedef {Object} HandToolOptions
-       * @property {HTMLDivElement} container - The document container.
-       * @property {EventBus} eventBus - The application event bus.
-       */
-      /**
-       * @class
-       */
-      var HandTool = function HandToolClosure() {
-        /**
-         * @constructs HandTool
-         * @param {HandToolOptions} options
-         */
-        function HandTool(options) {
-          this.container = options.container;
-          this.eventBus = options.eventBus;
-          this.wasActive = false;
-          this.handTool = new GrabToPan({
-            element: this.container,
-            onActiveChanged: function (isActive) {
-              this.eventBus.dispatch('handtoolchanged', { isActive: isActive });
-            }.bind(this)
-          });
-          this.eventBus.on('togglehandtool', this.toggle.bind(this));
-          this.eventBus.on('localized', function (e) {
-            Preferences.get('enableHandToolOnLoad').then(function resolved(value) {
-              if (value) {
-                this.handTool.activate();
-              }
-            }.bind(this), function rejected(reason) {
-            });
-          }.bind(this));
-          this.eventBus.on('presentationmodechanged', function (e) {
-            if (e.switchInProgress) {
-              return;
-            }
-            if (e.active) {
-              this.enterPresentationMode();
-            } else {
-              this.exitPresentationMode();
-            }
-          }.bind(this));
-        }
-        HandTool.prototype = {
-          /**
-           * @return {boolean}
-           */
-          get isActive() {
-            return !!this.handTool.active;
-          },
-          toggle: function HandTool_toggle() {
-            this.handTool.toggle();
-          },
-          enterPresentationMode: function HandTool_enterPresentationMode() {
-            if (this.isActive) {
-              this.wasActive = true;
-              this.handTool.deactivate();
-            }
-          },
-          exitPresentationMode: function HandTool_exitPresentationMode() {
-            if (this.wasActive) {
-              this.wasActive = false;
-              this.handTool.activate();
-            }
-          }
-        };
-        return HandTool;
-      }();
-      exports.HandTool = HandTool;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebPDFAttachmentViewer = {}, root.pdfjsWebPDFJS);
-    }(this, function (exports, pdfjsLib) {
-      /**
-       * @typedef {Object} PDFAttachmentViewerOptions
-       * @property {HTMLDivElement} container - The viewer element.
-       * @property {EventBus} eventBus - The application event bus.
-       * @property {DownloadManager} downloadManager - The download manager.
-       */
-      /**
-       * @typedef {Object} PDFAttachmentViewerRenderParameters
-       * @property {Array|null} attachments - An array of attachment objects.
-       */
-      /**
-       * @class
-       */
-      var PDFAttachmentViewer = function PDFAttachmentViewerClosure() {
-        /**
-         * @constructs PDFAttachmentViewer
-         * @param {PDFAttachmentViewerOptions} options
-         */
-        function PDFAttachmentViewer(options) {
-          this.attachments = null;
-          this.container = options.container;
-          this.eventBus = options.eventBus;
-          this.downloadManager = options.downloadManager;
-        }
-        PDFAttachmentViewer.prototype = {
-          reset: function PDFAttachmentViewer_reset() {
-            this.attachments = null;
-            var container = this.container;
-            while (container.firstChild) {
-              container.removeChild(container.firstChild);
-            }
-          },
-          /**
-           * @private
-           */
-          _dispatchEvent: function PDFAttachmentViewer_dispatchEvent(attachmentsCount) {
-            this.eventBus.dispatch('attachmentsloaded', {
-              source: this,
-              attachmentsCount: attachmentsCount
-            });
-          },
-          /**
-           * @private
-           */
-          _bindLink: function PDFAttachmentViewer_bindLink(button, content, filename) {
-            button.onclick = function downloadFile(e) {
-              this.downloadManager.downloadData(content, filename, '');
-              return false;
-            }.bind(this);
-          },
-          /**
-           * @param {PDFAttachmentViewerRenderParameters} params
-           */
-          render: function PDFAttachmentViewer_render(params) {
-            var attachments = params && params.attachments || null;
-            var attachmentsCount = 0;
-            if (this.attachments) {
-              this.reset();
-            }
-            this.attachments = attachments;
-            if (!attachments) {
-              this._dispatchEvent(attachmentsCount);
-              return;
-            }
-            var names = Object.keys(attachments).sort(function (a, b) {
-              return a.toLowerCase().localeCompare(b.toLowerCase());
-            });
-            attachmentsCount = names.length;
-            for (var i = 0; i < attachmentsCount; i++) {
-              var item = attachments[names[i]];
-              var filename = pdfjsLib.getFilenameFromUrl(item.filename);
-              var div = document.createElement('div');
-              div.className = 'attachmentsItem';
-              var button = document.createElement('button');
-              this._bindLink(button, item.content, filename);
-              button.textContent = pdfjsLib.removeNullCharacters(filename);
-              div.appendChild(button);
-              this.container.appendChild(div);
-            }
-            this._dispatchEvent(attachmentsCount);
-          }
-        };
-        return PDFAttachmentViewer;
-      }();
-      exports.PDFAttachmentViewer = PDFAttachmentViewer;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebPDFOutlineViewer = {}, root.pdfjsWebPDFJS);
-    }(this, function (exports, pdfjsLib) {
-      var PDFJS = pdfjsLib.PDFJS;
-      var DEFAULT_TITLE = '\u2013';
-      /**
-       * @typedef {Object} PDFOutlineViewerOptions
-       * @property {HTMLDivElement} container - The viewer element.
-       * @property {IPDFLinkService} linkService - The navigation/linking service.
-       * @property {EventBus} eventBus - The application event bus.
-       */
-      /**
-       * @typedef {Object} PDFOutlineViewerRenderParameters
-       * @property {Array|null} outline - An array of outline objects.
-       */
-      /**
-       * @class
-       */
-      var PDFOutlineViewer = function PDFOutlineViewerClosure() {
-        /**
-         * @constructs PDFOutlineViewer
-         * @param {PDFOutlineViewerOptions} options
-         */
-        function PDFOutlineViewer(options) {
-          this.outline = null;
-          this.lastToggleIsShow = true;
-          this.container = options.container;
-          this.linkService = options.linkService;
-          this.eventBus = options.eventBus;
-        }
-        PDFOutlineViewer.prototype = {
-          reset: function PDFOutlineViewer_reset() {
-            this.outline = null;
-            this.lastToggleIsShow = true;
-            var container = this.container;
-            while (container.firstChild) {
-              container.removeChild(container.firstChild);
-            }
-          },
-          /**
-           * @private
-           */
-          _dispatchEvent: function PDFOutlineViewer_dispatchEvent(outlineCount) {
-            this.eventBus.dispatch('outlineloaded', {
-              source: this,
-              outlineCount: outlineCount
-            });
-          },
-          /**
-           * @private
-           */
-          _bindLink: function PDFOutlineViewer_bindLink(element, item) {
-            if (item.url) {
-              pdfjsLib.addLinkAttributes(element, {
-                url: item.url,
-                target: item.newWindow ? PDFJS.LinkTarget.BLANK : undefined
-              });
-              return;
-            }
-            var self = this, destination = item.dest;
-            element.href = self.linkService.getDestinationHash(destination);
-            element.onclick = function () {
-              if (destination) {
-                self.linkService.navigateTo(destination);
-              }
-              return false;
-            };
-          },
-          /**
-           * @private
-           */
-          _setStyles: function PDFOutlineViewer_setStyles(element, item) {
-            var styleStr = '';
-            if (item.bold) {
-              styleStr += 'font-weight: bold;';
-            }
-            if (item.italic) {
-              styleStr += 'font-style: italic;';
-            }
-            if (styleStr) {
-              element.setAttribute('style', styleStr);
-            }
-          },
-          /**
-           * Prepend a button before an outline item which allows the user to toggle
-           * the visibility of all outline items at that level.
-           *
-           * @private
-           */
-          _addToggleButton: function PDFOutlineViewer_addToggleButton(div) {
-            var toggler = document.createElement('div');
-            toggler.className = 'outlineItemToggler';
-            toggler.onclick = function (event) {
-              event.stopPropagation();
-              toggler.classList.toggle('outlineItemsHidden');
-              if (event.shiftKey) {
-                var shouldShowAll = !toggler.classList.contains('outlineItemsHidden');
-                this._toggleOutlineItem(div, shouldShowAll);
-              }
-            }.bind(this);
-            div.insertBefore(toggler, div.firstChild);
-          },
-          /**
-           * Toggle the visibility of the subtree of an outline item.
-           *
-           * @param {Element} root - the root of the outline (sub)tree.
-           * @param {boolean} show - whether to show the outline (sub)tree. If false,
-           *   the outline subtree rooted at |root| will be collapsed.
-           *
-           * @private
-           */
-          _toggleOutlineItem: function PDFOutlineViewer_toggleOutlineItem(root, show) {
-            this.lastToggleIsShow = show;
-            var togglers = root.querySelectorAll('.outlineItemToggler');
-            for (var i = 0, ii = togglers.length; i < ii; ++i) {
-              togglers[i].classList[show ? 'remove' : 'add']('outlineItemsHidden');
-            }
-          },
-          /**
-           * Collapse or expand all subtrees of the outline.
-           */
-          toggleOutlineTree: function PDFOutlineViewer_toggleOutlineTree() {
-            if (!this.outline) {
-              return;
-            }
-            this._toggleOutlineItem(this.container, !this.lastToggleIsShow);
-          },
-          /**
-           * @param {PDFOutlineViewerRenderParameters} params
-           */
-          render: function PDFOutlineViewer_render(params) {
-            var outline = params && params.outline || null;
-            var outlineCount = 0;
-            if (this.outline) {
-              this.reset();
-            }
-            this.outline = outline;
-            if (!outline) {
-              this._dispatchEvent(outlineCount);
-              return;
-            }
-            var fragment = document.createDocumentFragment();
-            var queue = [{
-                parent: fragment,
-                items: this.outline
-              }];
-            var hasAnyNesting = false;
-            while (queue.length > 0) {
-              var levelData = queue.shift();
-              for (var i = 0, len = levelData.items.length; i < len; i++) {
-                var item = levelData.items[i];
-                var div = document.createElement('div');
-                div.className = 'outlineItem';
-                var element = document.createElement('a');
-                this._bindLink(element, item);
-                this._setStyles(element, item);
-                element.textContent = pdfjsLib.removeNullCharacters(item.title) || DEFAULT_TITLE;
-                div.appendChild(element);
-                if (item.items.length > 0) {
-                  hasAnyNesting = true;
-                  this._addToggleButton(div);
-                  var itemsDiv = document.createElement('div');
-                  itemsDiv.className = 'outlineItems';
-                  div.appendChild(itemsDiv);
-                  queue.push({
-                    parent: itemsDiv,
-                    items: item.items
-                  });
-                }
-                levelData.parent.appendChild(div);
-                outlineCount++;
-              }
-            }
-            if (hasAnyNesting) {
-              this.container.classList.add('outlineWithDeepNesting');
-            }
-            this.container.appendChild(fragment);
-            this._dispatchEvent(outlineCount);
-          }
-        };
-        return PDFOutlineViewer;
-      }();
-      exports.PDFOutlineViewer = PDFOutlineViewer;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebPDFSidebar = {}, root.pdfjsWebPDFRenderingQueue);
-    }(this, function (exports, pdfRenderingQueue) {
-      var RenderingStates = pdfRenderingQueue.RenderingStates;
-      var SidebarView = {
-        NONE: 0,
-        THUMBS: 1,
-        OUTLINE: 2,
-        ATTACHMENTS: 3
-      };
-      /**
-       * @typedef {Object} PDFSidebarOptions
-       * @property {PDFViewer} pdfViewer - The document viewer.
-       * @property {PDFThumbnailViewer} pdfThumbnailViewer - The thumbnail viewer.
-       * @property {PDFOutlineViewer} pdfOutlineViewer - The outline viewer.
-       * @property {HTMLDivElement} mainContainer - The main container
-       *   (in which the viewer element is placed).
-       * @property {HTMLDivElement} outerContainer - The outer container
-       *   (encasing both the viewer and sidebar elements).
-       * @property {EventBus} eventBus - The application event bus.
-       * @property {HTMLButtonElement} toggleButton - The button used for
-       *   opening/closing the sidebar.
-       * @property {HTMLButtonElement} thumbnailButton - The button used to show
-       *   the thumbnail view.
-       * @property {HTMLButtonElement} outlineButton - The button used to show
-       *   the outline view.
-       * @property {HTMLButtonElement} attachmentsButton - The button used to show
-       *   the attachments view.
-       * @property {HTMLDivElement} thumbnailView - The container in which
-       *   the thumbnails are placed.
-       * @property {HTMLDivElement} outlineView - The container in which
-       *   the outline is placed.
-       * @property {HTMLDivElement} attachmentsView - The container in which
-       *   the attachments are placed.
-       */
-      /**
-       * @class
-       */
-      var PDFSidebar = function PDFSidebarClosure() {
-        /**
-         * @constructs PDFSidebar
-         * @param {PDFSidebarOptions} options
-         */
-        function PDFSidebar(options) {
-          this.isOpen = false;
-          this.active = SidebarView.THUMBS;
-          this.isInitialViewSet = false;
-          /**
-           * Callback used when the sidebar has been opened/closed, to ensure that
-           * the viewers (PDFViewer/PDFThumbnailViewer) are updated correctly.
-           */
-          this.onToggled = null;
-          this.pdfViewer = options.pdfViewer;
-          this.pdfThumbnailViewer = options.pdfThumbnailViewer;
-          this.pdfOutlineViewer = options.pdfOutlineViewer;
-          this.mainContainer = options.mainContainer;
-          this.outerContainer = options.outerContainer;
-          this.eventBus = options.eventBus;
-          this.toggleButton = options.toggleButton;
-          this.thumbnailButton = options.thumbnailButton;
-          this.outlineButton = options.outlineButton;
-          this.attachmentsButton = options.attachmentsButton;
-          this.thumbnailView = options.thumbnailView;
-          this.outlineView = options.outlineView;
-          this.attachmentsView = options.attachmentsView;
-          this._addEventListeners();
-        }
-        PDFSidebar.prototype = {
-          reset: function PDFSidebar_reset() {
-            this.isInitialViewSet = false;
-            this.close();
-            this.switchView(SidebarView.THUMBS);
-            this.outlineButton.disabled = false;
-            this.attachmentsButton.disabled = false;
-          },
-          /**
-           * @returns {number} One of the values in {SidebarView}.
-           */
-          get visibleView() {
-            return this.isOpen ? this.active : SidebarView.NONE;
-          },
-          get isThumbnailViewVisible() {
-            return this.isOpen && this.active === SidebarView.THUMBS;
-          },
-          get isOutlineViewVisible() {
-            return this.isOpen && this.active === SidebarView.OUTLINE;
-          },
-          get isAttachmentsViewVisible() {
-            return this.isOpen && this.active === SidebarView.ATTACHMENTS;
-          },
-          /**
-           * @param {number} view - The sidebar view that should become visible,
-           *                        must be one of the values in {SidebarView}.
-           */
-          setInitialView: function PDFSidebar_setInitialView(view) {
-            if (this.isInitialViewSet) {
-              return;
-            }
-            this.isInitialViewSet = true;
-            if (this.isOpen && view === SidebarView.NONE) {
-              this._dispatchEvent();
-              // If the user has already manually opened the sidebar,
-              // immediately closing it would be bad UX.
-              return;
-            }
-            var isViewPreserved = view === this.visibleView;
-            this.switchView(view, /* forceOpen */
-            true);
-            if (isViewPreserved) {
-              // Prevent dispatching two back-to-back `sidebarviewchanged` events,
-              // since `this.switchView` dispatched the event if the view changed.
-              this._dispatchEvent();
-            }
-          },
-          /**
-           * @param {number} view - The sidebar view that should be switched to,
-           *                        must be one of the values in {SidebarView}.
-           * @param {boolean} forceOpen - (optional) Ensure that the sidebar is open.
-           *                              The default value is false.
-           */
-          switchView: function PDFSidebar_switchView(view, forceOpen) {
-            if (view === SidebarView.NONE) {
-              this.close();
-              return;
-            }
-            var isViewChanged = view !== this.active;
-            var shouldForceRendering = false;
-            switch (view) {
-            case SidebarView.THUMBS:
-              this.thumbnailButton.classList.add('toggled');
-              this.outlineButton.classList.remove('toggled');
-              this.attachmentsButton.classList.remove('toggled');
-              this.thumbnailView.classList.remove('hidden');
-              this.outlineView.classList.add('hidden');
-              this.attachmentsView.classList.add('hidden');
-              if (this.isOpen && isViewChanged) {
-                this._updateThumbnailViewer();
-                shouldForceRendering = true;
-              }
-              break;
-            case SidebarView.OUTLINE:
-              if (this.outlineButton.disabled) {
-                return;
-              }
-              this.thumbnailButton.classList.remove('toggled');
-              this.outlineButton.classList.add('toggled');
-              this.attachmentsButton.classList.remove('toggled');
-              this.thumbnailView.classList.add('hidden');
-              this.outlineView.classList.remove('hidden');
-              this.attachmentsView.classList.add('hidden');
-              break;
-            case SidebarView.ATTACHMENTS:
-              if (this.attachmentsButton.disabled) {
-                return;
-              }
-              this.thumbnailButton.classList.remove('toggled');
-              this.outlineButton.classList.remove('toggled');
-              this.attachmentsButton.classList.add('toggled');
-              this.thumbnailView.classList.add('hidden');
-              this.outlineView.classList.add('hidden');
-              this.attachmentsView.classList.remove('hidden');
-              break;
-            default:
-              console.error('PDFSidebar_switchView: "' + view + '" is an unsupported value.');
-              return;
-            }
-            // Update the active view *after* it has been validated above,
-            // in order to prevent setting it to an invalid state.
-            this.active = view | 0;
-            if (forceOpen && !this.isOpen) {
-              this.open();
-              // NOTE: `this.open` will trigger rendering, and dispatch the event.
-              return;
-            }
-            if (shouldForceRendering) {
-              this._forceRendering();
-            }
-            if (isViewChanged) {
-              this._dispatchEvent();
-            }
-          },
-          open: function PDFSidebar_open() {
-            if (this.isOpen) {
-              return;
-            }
-            this.isOpen = true;
-            this.toggleButton.classList.add('toggled');
-            this.outerContainer.classList.add('sidebarMoving');
-            this.outerContainer.classList.add('sidebarOpen');
-            if (this.active === SidebarView.THUMBS) {
-              this._updateThumbnailViewer();
-            }
-            this._forceRendering();
-            this._dispatchEvent();
-          },
-          close: function PDFSidebar_close() {
-            if (!this.isOpen) {
-              return;
-            }
-            this.isOpen = false;
-            this.toggleButton.classList.remove('toggled');
-            this.outerContainer.classList.add('sidebarMoving');
-            this.outerContainer.classList.remove('sidebarOpen');
-            this._forceRendering();
-            this._dispatchEvent();
-          },
-          toggle: function PDFSidebar_toggle() {
-            if (this.isOpen) {
-              this.close();
-            } else {
-              this.open();
-            }
-          },
-          /**
-           * @private
-           */
-          _dispatchEvent: function PDFSidebar_dispatchEvent() {
-            this.eventBus.dispatch('sidebarviewchanged', {
-              source: this,
-              view: this.visibleView
-            });
-          },
-          /**
-           * @private
-           */
-          _forceRendering: function PDFSidebar_forceRendering() {
-            if (this.onToggled) {
-              this.onToggled();
-            } else {
-              // Fallback
-              this.pdfViewer.forceRendering();
-              this.pdfThumbnailViewer.forceRendering();
-            }
-          },
-          /**
-           * @private
-           */
-          _updateThumbnailViewer: function PDFSidebar_updateThumbnailViewer() {
-            var pdfViewer = this.pdfViewer;
-            var thumbnailViewer = this.pdfThumbnailViewer;
-            // Use the rendered pages to set the corresponding thumbnail images.
-            var pagesCount = pdfViewer.pagesCount;
-            for (var pageIndex = 0; pageIndex < pagesCount; pageIndex++) {
-              var pageView = pdfViewer.getPageView(pageIndex);
-              if (pageView && pageView.renderingState === RenderingStates.FINISHED) {
-                var thumbnailView = thumbnailViewer.getThumbnail(pageIndex);
-                thumbnailView.setImage(pageView);
-              }
-            }
-            thumbnailViewer.scrollThumbnailIntoView(pdfViewer.currentPageNumber);
-          },
-          /**
-           * @private
-           */
-          _addEventListeners: function PDFSidebar_addEventListeners() {
-            var self = this;
-            self.mainContainer.addEventListener('transitionend', function (evt) {
-              if (evt.target === /* mainContainer */
-                this) {
-                self.outerContainer.classList.remove('sidebarMoving');
-              }
-            });
-            // Buttons for switching views.
-            self.thumbnailButton.addEventListener('click', function () {
-              self.switchView(SidebarView.THUMBS);
-            });
-            self.outlineButton.addEventListener('click', function () {
-              self.switchView(SidebarView.OUTLINE);
-            });
-            self.outlineButton.addEventListener('dblclick', function () {
-              self.pdfOutlineViewer.toggleOutlineTree();
-            });
-            self.attachmentsButton.addEventListener('click', function () {
-              self.switchView(SidebarView.ATTACHMENTS);
-            });
-            // Disable/enable views.
-            self.eventBus.on('outlineloaded', function (e) {
-              var outlineCount = e.outlineCount;
-              self.outlineButton.disabled = !outlineCount;
-              if (!outlineCount && self.active === SidebarView.OUTLINE) {
-                self.switchView(SidebarView.THUMBS);
-              }
-            });
-            self.eventBus.on('attachmentsloaded', function (e) {
-              var attachmentsCount = e.attachmentsCount;
-              self.attachmentsButton.disabled = !attachmentsCount;
-              if (!attachmentsCount && self.active === SidebarView.ATTACHMENTS) {
-                self.switchView(SidebarView.THUMBS);
-              }
-            });
-            // Update the thumbnailViewer, if visible, when exiting presentation mode.
-            self.eventBus.on('presentationmodechanged', function (e) {
-              if (!e.active && !e.switchInProgress && self.isThumbnailViewVisible) {
-                self._updateThumbnailViewer();
-              }
-            });
-          }
-        };
-        return PDFSidebar;
-      }();
-      exports.SidebarView = SidebarView;
-      exports.PDFSidebar = PDFSidebar;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebUIUtils = {}, root.pdfjsWebPDFJS);
-    }(this, function (exports, pdfjsLib) {
-      var CSS_UNITS = 96.0 / 72.0;
-      var DEFAULT_SCALE_VALUE = 'auto';
-      var DEFAULT_SCALE = 1.0;
-      var UNKNOWN_SCALE = 0;
-      var MAX_AUTO_SCALE = 1.25;
-      var SCROLLBAR_PADDING = 40;
-      var VERTICAL_PADDING = 5;
-      var mozL10n = document.mozL10n || document.webL10n;
-      var PDFJS = pdfjsLib.PDFJS;
-      /**
-       * Disables fullscreen support, and by extension Presentation Mode,
-       * in browsers which support the fullscreen API.
-       * @var {boolean}
-       */
-      PDFJS.disableFullscreen = PDFJS.disableFullscreen === undefined ? false : PDFJS.disableFullscreen;
-      /**
-       * Enables CSS only zooming.
-       * @var {boolean}
-       */
-      PDFJS.useOnlyCssZoom = PDFJS.useOnlyCssZoom === undefined ? false : PDFJS.useOnlyCssZoom;
-      /**
-       * The maximum supported canvas size in total pixels e.g. width * height.
-       * The default value is 4096 * 4096. Use -1 for no limit.
-       * @var {number}
-       */
-      PDFJS.maxCanvasPixels = PDFJS.maxCanvasPixels === undefined ? 16777216 : PDFJS.maxCanvasPixels;
-      /**
-       * Disables saving of the last position of the viewed PDF.
-       * @var {boolean}
-       */
-      PDFJS.disableHistory = PDFJS.disableHistory === undefined ? false : PDFJS.disableHistory;
-      /**
-       * Disables creation of the text layer that used for text selection and search.
-       * @var {boolean}
-       */
-      PDFJS.disableTextLayer = PDFJS.disableTextLayer === undefined ? false : PDFJS.disableTextLayer;
-      /**
-       * Disables maintaining the current position in the document when zooming.
-       */
-      PDFJS.ignoreCurrentPositionOnZoom = PDFJS.ignoreCurrentPositionOnZoom === undefined ? false : PDFJS.ignoreCurrentPositionOnZoom;
-      /**
-       * Returns scale factor for the canvas. It makes sense for the HiDPI displays.
-       * @return {Object} The object with horizontal (sx) and vertical (sy)
-                          scales. The scaled property is set to false if scaling is
-                          not required, true otherwise.
-       */
-      function getOutputScale(ctx) {
-        var devicePixelRatio = window.devicePixelRatio || 1;
-        var backingStoreRatio = ctx.webkitBackingStorePixelRatio || ctx.mozBackingStorePixelRatio || ctx.msBackingStorePixelRatio || ctx.oBackingStorePixelRatio || ctx.backingStorePixelRatio || 1;
-        var pixelRatio = devicePixelRatio / backingStoreRatio;
-        return {
-          sx: pixelRatio,
-          sy: pixelRatio,
-          scaled: pixelRatio !== 1
-        };
-      }
-      /**
-       * Scrolls specified element into view of its parent.
-       * @param {Object} element - The element to be visible.
-       * @param {Object} spot - An object with optional top and left properties,
-       *   specifying the offset from the top left edge.
-       * @param {boolean} skipOverflowHiddenElements - Ignore elements that have
-       *   the CSS rule `overflow: hidden;` set. The default is false.
-       */
-      function scrollIntoView(element, spot, skipOverflowHiddenElements) {
-        // Assuming offsetParent is available (it's not available when viewer is in
-        // hidden iframe or object). We have to scroll: if the offsetParent is not set
-        // producing the error. See also animationStartedClosure.
-        var parent = element.offsetParent;
-        if (!parent) {
-          console.error('offsetParent is not set -- cannot scroll');
-          return;
-        }
-        var checkOverflow = skipOverflowHiddenElements || false;
-        var offsetY = element.offsetTop + element.clientTop;
-        var offsetX = element.offsetLeft + element.clientLeft;
-        while (parent.clientHeight === parent.scrollHeight || checkOverflow && getComputedStyle(parent).overflow === 'hidden') {
-          if (parent.dataset._scaleY) {
-            offsetY /= parent.dataset._scaleY;
-            offsetX /= parent.dataset._scaleX;
-          }
-          offsetY += parent.offsetTop;
-          offsetX += parent.offsetLeft;
-          parent = parent.offsetParent;
-          if (!parent) {
-            return;
-          }
-        }
-        // no need to scroll
-        if (spot) {
-          if (spot.top !== undefined) {
-            offsetY += spot.top;
-          }
-          if (spot.left !== undefined) {
-            offsetX += spot.left;
-            parent.scrollLeft = offsetX;
-          }
-        }
-        parent.scrollTop = offsetY;
-      }
-      /**
-       * Helper function to start monitoring the scroll event and converting them into
-       * PDF.js friendly one: with scroll debounce and scroll direction.
-       */
-      function watchScroll(viewAreaElement, callback) {
-        var debounceScroll = function debounceScroll(evt) {
-          if (rAF) {
-            return;
-          }
-          // schedule an invocation of scroll for next animation frame.
-          rAF = window.requestAnimationFrame(function viewAreaElementScrolled() {
-            rAF = null;
-            var currentY = viewAreaElement.scrollTop;
-            var lastY = state.lastY;
-            if (currentY !== lastY) {
-              state.down = currentY > lastY;
-            }
-            state.lastY = currentY;
-            callback(state);
-          });
-        };
-        var state = {
-          down: true,
-          lastY: viewAreaElement.scrollTop,
-          _eventHandler: debounceScroll
-        };
-        var rAF = null;
-        viewAreaElement.addEventListener('scroll', debounceScroll, true);
-        return state;
-      }
-      /**
-       * Helper function to parse query string (e.g. ?param1=value&parm2=...).
-       */
-      function parseQueryString(query) {
-        var parts = query.split('&');
-        var params = {};
-        for (var i = 0, ii = parts.length; i < ii; ++i) {
-          var param = parts[i].split('=');
-          var key = param[0].toLowerCase();
-          var value = param.length > 1 ? param[1] : null;
-          params[decodeURIComponent(key)] = decodeURIComponent(value);
-        }
-        return params;
-      }
-      /**
-       * Use binary search to find the index of the first item in a given array which
-       * passes a given condition. The items are expected to be sorted in the sense
-       * that if the condition is true for one item in the array, then it is also true
-       * for all following items.
-       *
-       * @returns {Number} Index of the first array element to pass the test,
-       *                   or |items.length| if no such element exists.
-       */
-      function binarySearchFirstItem(items, condition) {
-        var minIndex = 0;
-        var maxIndex = items.length - 1;
-        if (items.length === 0 || !condition(items[maxIndex])) {
-          return items.length;
-        }
-        if (condition(items[minIndex])) {
-          return minIndex;
-        }
-        while (minIndex < maxIndex) {
-          var currentIndex = minIndex + maxIndex >> 1;
-          var currentItem = items[currentIndex];
-          if (condition(currentItem)) {
-            maxIndex = currentIndex;
-          } else {
-            minIndex = currentIndex + 1;
-          }
-        }
-        return minIndex;
-      }
-      /* === maxIndex */
-      /**
-       *  Approximates float number as a fraction using Farey sequence (max order
-       *  of 8).
-       *  @param {number} x - Positive float number.
-       *  @returns {Array} Estimated fraction: the first array item is a numerator,
-       *                   the second one is a denominator.
-       */
-      function approximateFraction(x) {
-        // Fast paths for int numbers or their inversions.
-        if (Math.floor(x) === x) {
-          return [
-            x,
-            1
-          ];
-        }
-        var xinv = 1 / x;
-        var limit = 8;
-        if (xinv > limit) {
-          return [
-            1,
-            limit
-          ];
-        } else if (Math.floor(xinv) === xinv) {
-          return [
-            1,
-            xinv
-          ];
-        }
-        var x_ = x > 1 ? xinv : x;
-        // a/b and c/d are neighbours in Farey sequence.
-        var a = 0, b = 1, c = 1, d = 1;
-        // Limiting search to order 8.
-        while (true) {
-          // Generating next term in sequence (order of q).
-          var p = a + c, q = b + d;
-          if (q > limit) {
-            break;
-          }
-          if (x_ <= p / q) {
-            c = p;
-            d = q;
-          } else {
-            a = p;
-            b = q;
-          }
-        }
-        // Select closest of the neighbours to x.
-        if (x_ - a / b < c / d - x_) {
-          return x_ === x ? [
-            a,
-            b
-          ] : [
-            b,
-            a
-          ];
-        } else {
-          return x_ === x ? [
-            c,
-            d
-          ] : [
-            d,
-            c
-          ];
-        }
-      }
-      function roundToDivide(x, div) {
-        var r = x % div;
-        return r === 0 ? x : Math.round(x - r + div);
-      }
-      /**
-       * Generic helper to find out what elements are visible within a scroll pane.
-       */
-      function getVisibleElements(scrollEl, views, sortByVisibility) {
-        var top = scrollEl.scrollTop, bottom = top + scrollEl.clientHeight;
-        var left = scrollEl.scrollLeft, right = left + scrollEl.clientWidth;
-        function isElementBottomBelowViewTop(view) {
-          var element = view.div;
-          var elementBottom = element.offsetTop + element.clientTop + element.clientHeight;
-          return elementBottom > top;
-        }
-        var visible = [], view, element;
-        var currentHeight, viewHeight, hiddenHeight, percentHeight;
-        var currentWidth, viewWidth;
-        var firstVisibleElementInd = views.length === 0 ? 0 : binarySearchFirstItem(views, isElementBottomBelowViewTop);
-        for (var i = firstVisibleElementInd, ii = views.length; i < ii; i++) {
-          view = views[i];
-          element = view.div;
-          currentHeight = element.offsetTop + element.clientTop;
-          viewHeight = element.clientHeight;
-          if (currentHeight > bottom) {
-            break;
-          }
-          currentWidth = element.offsetLeft + element.clientLeft;
-          viewWidth = element.clientWidth;
-          if (currentWidth + viewWidth < left || currentWidth > right) {
-            continue;
-          }
-          hiddenHeight = Math.max(0, top - currentHeight) + Math.max(0, currentHeight + viewHeight - bottom);
-          percentHeight = (viewHeight - hiddenHeight) * 100 / viewHeight | 0;
-          visible.push({
-            id: view.id,
-            x: currentWidth,
-            y: currentHeight,
-            view: view,
-            percent: percentHeight
-          });
-        }
-        var first = visible[0];
-        var last = visible[visible.length - 1];
-        if (sortByVisibility) {
-          visible.sort(function (a, b) {
-            var pc = a.percent - b.percent;
-            if (Math.abs(pc) > 0.001) {
-              return -pc;
-            }
-            return a.id - b.id;
-          });
-        }
-        // ensure stability
-        return {
-          first: first,
-          last: last,
-          views: visible
-        };
-      }
-      /**
-       * Event handler to suppress context menu.
-       */
-      function noContextMenuHandler(e) {
-        e.preventDefault();
-      }
-      /**
-       * Returns the filename or guessed filename from the url (see issue 3455).
-       * url {String} The original PDF location.
-       * @return {String} Guessed PDF file name.
-       */
-      function getPDFFileNameFromURL(url) {
-        var reURI = /^(?:([^:]+:)?\/\/[^\/]+)?([^?#]*)(\?[^#]*)?(#.*)?$/;
-        //            SCHEME      HOST         1.PATH  2.QUERY   3.REF
-        // Pattern to get last matching NAME.pdf
-        var reFilename = /[^\/?#=]+\.pdf\b(?!.*\.pdf\b)/i;
-        var splitURI = reURI.exec(url);
-        var suggestedFilename = reFilename.exec(splitURI[1]) || reFilename.exec(splitURI[2]) || reFilename.exec(splitURI[3]);
-        if (suggestedFilename) {
-          suggestedFilename = suggestedFilename[0];
-          if (suggestedFilename.indexOf('%') !== -1) {
-            // URL-encoded %2Fpath%2Fto%2Ffile.pdf should be file.pdf
-            try {
-              suggestedFilename = reFilename.exec(decodeURIComponent(suggestedFilename))[0];
-            } catch (e) {
-            }
-          }
-        }
-        return suggestedFilename || 'document.pdf';
-      }
-      function normalizeWheelEventDelta(evt) {
-        var delta = Math.sqrt(evt.deltaX * evt.deltaX + evt.deltaY * evt.deltaY);
-        var angle = Math.atan2(evt.deltaY, evt.deltaX);
-        if (-0.25 * Math.PI < angle && angle < 0.75 * Math.PI) {
-          // All that is left-up oriented has to change the sign.
-          delta = -delta;
-        }
-        var MOUSE_DOM_DELTA_PIXEL_MODE = 0;
-        var MOUSE_DOM_DELTA_LINE_MODE = 1;
-        var MOUSE_PIXELS_PER_LINE = 30;
-        var MOUSE_LINES_PER_PAGE = 30;
-        // Converts delta to per-page units
-        if (evt.deltaMode === MOUSE_DOM_DELTA_PIXEL_MODE) {
-          delta /= MOUSE_PIXELS_PER_LINE * MOUSE_LINES_PER_PAGE;
-        } else if (evt.deltaMode === MOUSE_DOM_DELTA_LINE_MODE) {
-          delta /= MOUSE_LINES_PER_PAGE;
-        }
-        return delta;
-      }
-      /**
-       * Simple event bus for an application. Listeners are attached using the
-       * `on` and `off` methods. To raise an event, the `dispatch` method shall be
-       * used.
-       */
-      var EventBus = function EventBusClosure() {
-        function EventBus() {
-          this._listeners = Object.create(null);
-        }
-        EventBus.prototype = {
-          on: function EventBus_on(eventName, listener) {
-            var eventListeners = this._listeners[eventName];
-            if (!eventListeners) {
-              eventListeners = [];
-              this._listeners[eventName] = eventListeners;
-            }
-            eventListeners.push(listener);
-          },
-          off: function EventBus_on(eventName, listener) {
-            var eventListeners = this._listeners[eventName];
-            var i;
-            if (!eventListeners || (i = eventListeners.indexOf(listener)) < 0) {
-              return;
-            }
-            eventListeners.splice(i, 1);
-          },
-          dispatch: function EventBus_dispath(eventName) {
-            var eventListeners = this._listeners[eventName];
-            if (!eventListeners || eventListeners.length === 0) {
-              return;
-            }
-            // Passing all arguments after the eventName to the listeners.
-            var args = Array.prototype.slice.call(arguments, 1);
-            // Making copy of the listeners array in case if it will be modified
-            // during dispatch.
-            eventListeners.slice(0).forEach(function (listener) {
-              listener.apply(null, args);
-            });
-          }
-        };
-        return EventBus;
-      }();
-      var ProgressBar = function ProgressBarClosure() {
-        function clamp(v, min, max) {
-          return Math.min(Math.max(v, min), max);
-        }
-        function ProgressBar(id, opts) {
-          this.visible = true;
-          // Fetch the sub-elements for later.
-          this.div = document.querySelector(id + ' .progress');
-          // Get the loading bar element, so it can be resized to fit the viewer.
-          this.bar = this.div.parentNode;
-          // Get options, with sensible defaults.
-          this.height = opts.height || 100;
-          this.width = opts.width || 100;
-          this.units = opts.units || '%';
-          // Initialize heights.
-          this.div.style.height = this.height + this.units;
-          this.percent = 0;
-        }
-        ProgressBar.prototype = {
-          updateBar: function ProgressBar_updateBar() {
-            if (this._indeterminate) {
-              this.div.classList.add('indeterminate');
-              this.div.style.width = this.width + this.units;
-              return;
-            }
-            this.div.classList.remove('indeterminate');
-            var progressSize = this.width * this._percent / 100;
-            this.div.style.width = progressSize + this.units;
-          },
-          get percent() {
-            return this._percent;
-          },
-          set percent(val) {
-            this._indeterminate = isNaN(val);
-            this._percent = clamp(val, 0, 100);
-            this.updateBar();
-          },
-          setWidth: function ProgressBar_setWidth(viewer) {
-            if (viewer) {
-              var container = viewer.parentNode;
-              var scrollbarWidth = container.offsetWidth - viewer.offsetWidth;
-              if (scrollbarWidth > 0) {
-                this.bar.setAttribute('style', 'width: calc(100% - ' + scrollbarWidth + 'px);');
-              }
-            }
-          },
-          hide: function ProgressBar_hide() {
-            if (!this.visible) {
-              return;
-            }
-            this.visible = false;
-            this.bar.classList.add('hidden');
-            document.body.classList.remove('loadingInProgress');
-          },
-          show: function ProgressBar_show() {
-            if (this.visible) {
-              return;
-            }
-            this.visible = true;
-            document.body.classList.add('loadingInProgress');
-            this.bar.classList.remove('hidden');
-          }
-        };
-        return ProgressBar;
-      }();
-      exports.CSS_UNITS = CSS_UNITS;
-      exports.DEFAULT_SCALE_VALUE = DEFAULT_SCALE_VALUE;
-      exports.DEFAULT_SCALE = DEFAULT_SCALE;
-      exports.UNKNOWN_SCALE = UNKNOWN_SCALE;
-      exports.MAX_AUTO_SCALE = MAX_AUTO_SCALE;
-      exports.SCROLLBAR_PADDING = SCROLLBAR_PADDING;
-      exports.VERTICAL_PADDING = VERTICAL_PADDING;
-      exports.mozL10n = mozL10n;
-      exports.EventBus = EventBus;
-      exports.ProgressBar = ProgressBar;
-      exports.getPDFFileNameFromURL = getPDFFileNameFromURL;
-      exports.noContextMenuHandler = noContextMenuHandler;
-      exports.parseQueryString = parseQueryString;
-      exports.getVisibleElements = getVisibleElements;
-      exports.roundToDivide = roundToDivide;
-      exports.approximateFraction = approximateFraction;
-      exports.getOutputScale = getOutputScale;
-      exports.scrollIntoView = scrollIntoView;
-      exports.watchScroll = watchScroll;
-      exports.binarySearchFirstItem = binarySearchFirstItem;
-      exports.normalizeWheelEventDelta = normalizeWheelEventDelta;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebDOMEvents = {}, root.pdfjsWebUIUtils);
-    }(this, function (exports, uiUtils) {
-      var EventBus = uiUtils.EventBus;
-      // Attaching to the application event bus to dispatch events to the DOM for
-      // backwards viewer API compatibility.
-      function attachDOMEventsToEventBus(eventBus) {
-        eventBus.on('documentload', function () {
-          var event = document.createEvent('CustomEvent');
-          event.initCustomEvent('documentload', true, true, {});
-          window.dispatchEvent(event);
-        });
-        eventBus.on('pagerendered', function (e) {
-          var event = document.createEvent('CustomEvent');
-          event.initCustomEvent('pagerendered', true, true, {
-            pageNumber: e.pageNumber,
-            cssTransform: e.cssTransform
-          });
-          e.source.div.dispatchEvent(event);
-        });
-        eventBus.on('textlayerrendered', function (e) {
-          var event = document.createEvent('CustomEvent');
-          event.initCustomEvent('textlayerrendered', true, true, { pageNumber: e.pageNumber });
-          e.source.textLayerDiv.dispatchEvent(event);
-        });
-        eventBus.on('pagechange', function (e) {
-          var event = document.createEvent('UIEvents');
-          event.initUIEvent('pagechange', true, true, window, 0);
-          event.pageNumber = e.pageNumber;
-          e.source.container.dispatchEvent(event);
-        });
-        eventBus.on('pagesinit', function (e) {
-          var event = document.createEvent('CustomEvent');
-          event.initCustomEvent('pagesinit', true, true, null);
-          e.source.container.dispatchEvent(event);
-        });
-        eventBus.on('pagesloaded', function (e) {
-          var event = document.createEvent('CustomEvent');
-          event.initCustomEvent('pagesloaded', true, true, { pagesCount: e.pagesCount });
-          e.source.container.dispatchEvent(event);
-        });
-        eventBus.on('scalechange', function (e) {
-          var event = document.createEvent('UIEvents');
-          event.initUIEvent('scalechange', true, true, window, 0);
-          event.scale = e.scale;
-          event.presetValue = e.presetValue;
-          e.source.container.dispatchEvent(event);
-        });
-        eventBus.on('updateviewarea', function (e) {
-          var event = document.createEvent('UIEvents');
-          event.initUIEvent('updateviewarea', true, true, window, 0);
-          event.location = e.location;
-          e.source.container.dispatchEvent(event);
-        });
-        eventBus.on('find', function (e) {
-          if (e.source === window) {
-            return;
-          }
-          // event comes from FirefoxCom, no need to replicate
-          var event = document.createEvent('CustomEvent');
-          event.initCustomEvent('find' + e.type, true, true, {
-            query: e.query,
-            phraseSearch: e.phraseSearch,
-            caseSensitive: e.caseSensitive,
-            highlightAll: e.highlightAll,
-            findPrevious: e.findPrevious
-          });
-          window.dispatchEvent(event);
-        });
-        eventBus.on('attachmentsloaded', function (e) {
-          var event = document.createEvent('CustomEvent');
-          event.initCustomEvent('attachmentsloaded', true, true, { attachmentsCount: e.attachmentsCount });
-          e.source.container.dispatchEvent(event);
-        });
-        eventBus.on('sidebarviewchanged', function (e) {
-          var event = document.createEvent('CustomEvent');
-          event.initCustomEvent('sidebarviewchanged', true, true, { view: e.view });
-          e.source.outerContainer.dispatchEvent(event);
-        });
-        eventBus.on('pagemode', function (e) {
-          var event = document.createEvent('CustomEvent');
-          event.initCustomEvent('pagemode', true, true, { mode: e.mode });
-          e.source.pdfViewer.container.dispatchEvent(event);
-        });
-        eventBus.on('namedaction', function (e) {
-          var event = document.createEvent('CustomEvent');
-          event.initCustomEvent('namedaction', true, true, { action: e.action });
-          e.source.pdfViewer.container.dispatchEvent(event);
-        });
-        eventBus.on('presentationmodechanged', function (e) {
-          var event = document.createEvent('CustomEvent');
-          event.initCustomEvent('presentationmodechanged', true, true, {
-            active: e.active,
-            switchInProgress: e.switchInProgress
-          });
-          window.dispatchEvent(event);
-        });
-        eventBus.on('outlineloaded', function (e) {
-          var event = document.createEvent('CustomEvent');
-          event.initCustomEvent('outlineloaded', true, true, { outlineCount: e.outlineCount });
-          e.source.container.dispatchEvent(event);
-        });
-      }
-      var globalEventBus = null;
-      function getGlobalEventBus() {
-        if (globalEventBus) {
-          return globalEventBus;
-        }
-        globalEventBus = new EventBus();
-        attachDOMEventsToEventBus(globalEventBus);
-        return globalEventBus;
-      }
-      exports.attachDOMEventsToEventBus = attachDOMEventsToEventBus;
-      exports.getGlobalEventBus = getGlobalEventBus;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebPasswordPrompt = {}, root.pdfjsWebUIUtils, root.pdfjsWebOverlayManager, root.pdfjsWebPDFJS);
-    }(this, function (exports, uiUtils, overlayManager, pdfjsLib) {
-      var mozL10n = uiUtils.mozL10n;
-      var OverlayManager = overlayManager.OverlayManager;
-      /**
-       * @typedef {Object} PasswordPromptOptions
-       * @property {string} overlayName - Name of the overlay for the overlay manager.
-       * @property {HTMLDivElement} container - Div container for the overlay.
-       * @property {HTMLParagraphElement} label - Label containing instructions for
-       *                                          entering the password.
-       * @property {HTMLInputElement} input - Input field for entering the password.
-       * @property {HTMLButtonElement} submitButton - Button for submitting the
-       *                                              password.
-       * @property {HTMLButtonElement} cancelButton - Button for cancelling password
-       *                                              entry.
-       */
-      /**
-       * @class
-       */
-      var PasswordPrompt = function PasswordPromptClosure() {
-        /**
-         * @constructs PasswordPrompt
-         * @param {PasswordPromptOptions} options
-         */
-        function PasswordPrompt(options) {
-          this.overlayName = options.overlayName;
-          this.container = options.container;
-          this.label = options.label;
-          this.input = options.input;
-          this.submitButton = options.submitButton;
-          this.cancelButton = options.cancelButton;
-          this.updateCallback = null;
-          this.reason = null;
-          // Attach the event listeners.
-          this.submitButton.addEventListener('click', this.verify.bind(this));
-          this.cancelButton.addEventListener('click', this.close.bind(this));
-          this.input.addEventListener('keydown', function (e) {
-            if (e.keyCode === 13) {
-              // Enter key
-              this.verify();
-            }
-          }.bind(this));
-          OverlayManager.register(this.overlayName, this.container, this.close.bind(this), true);
-        }
-        PasswordPrompt.prototype = {
-          open: function PasswordPrompt_open() {
-            OverlayManager.open(this.overlayName).then(function () {
-              this.input.type = 'password';
-              this.input.focus();
-              var promptString = mozL10n.get('password_label', null, 'Enter the password to open this PDF file.');
-              if (this.reason === pdfjsLib.PasswordResponses.INCORRECT_PASSWORD) {
-                promptString = mozL10n.get('password_invalid', null, 'Invalid password. Please try again.');
-              }
-              this.label.textContent = promptString;
-            }.bind(this));
-          },
-          close: function PasswordPrompt_close() {
-            OverlayManager.close(this.overlayName).then(function () {
-              this.input.value = '';
-              this.input.type = '';
-            }.bind(this));
-          },
-          verify: function PasswordPrompt_verify() {
-            var password = this.input.value;
-            if (password && password.length > 0) {
-              this.close();
-              return this.updateCallback(password);
-            }
-          },
-          setUpdateCallback: function PasswordPrompt_setUpdateCallback(updateCallback, reason) {
-            this.updateCallback = updateCallback;
-            this.reason = reason;
-          }
-        };
-        return PasswordPrompt;
-      }();
-      exports.PasswordPrompt = PasswordPrompt;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebPDFDocumentProperties = {}, root.pdfjsWebUIUtils, root.pdfjsWebOverlayManager);
-    }(this, function (exports, uiUtils, overlayManager) {
-      var getPDFFileNameFromURL = uiUtils.getPDFFileNameFromURL;
-      var mozL10n = uiUtils.mozL10n;
-      var OverlayManager = overlayManager.OverlayManager;
-      /**
-       * @typedef {Object} PDFDocumentPropertiesOptions
-       * @property {string} overlayName - Name/identifier for the overlay.
-       * @property {Object} fields - Names and elements of the overlay's fields.
-       * @property {HTMLButtonElement} closeButton - Button for closing the overlay.
-       */
-      /**
-       * @class
-       */
-      var PDFDocumentProperties = function PDFDocumentPropertiesClosure() {
-        /**
-         * @constructs PDFDocumentProperties
-         * @param {PDFDocumentPropertiesOptions} options
-         */
-        function PDFDocumentProperties(options) {
-          this.fields = options.fields;
-          this.overlayName = options.overlayName;
-          this.container = options.container;
-          this.rawFileSize = 0;
-          this.url = null;
-          this.pdfDocument = null;
-          // Bind the event listener for the Close button.
-          if (options.closeButton) {
-            options.closeButton.addEventListener('click', this.close.bind(this));
-          }
-          this.dataAvailablePromise = new Promise(function (resolve) {
-            this.resolveDataAvailable = resolve;
-          }.bind(this));
-          OverlayManager.register(this.overlayName, this.container, this.close.bind(this));
-        }
-        PDFDocumentProperties.prototype = {
-          /**
-           * Open the document properties overlay.
-           */
-          open: function PDFDocumentProperties_open() {
-            Promise.all([
-              OverlayManager.open(this.overlayName),
-              this.dataAvailablePromise
-            ]).then(function () {
-              this._getProperties();
-            }.bind(this));
-          },
-          /**
-           * Close the document properties overlay.
-           */
-          close: function PDFDocumentProperties_close() {
-            OverlayManager.close(this.overlayName);
-          },
-          /**
-           * Set the file size of the PDF document. This method is used to
-           * update the file size in the document properties overlay once it
-           * is known so we do not have to wait until the entire file is loaded.
-           *
-           * @param {number} fileSize - The file size of the PDF document.
-           */
-          setFileSize: function PDFDocumentProperties_setFileSize(fileSize) {
-            if (fileSize > 0) {
-              this.rawFileSize = fileSize;
-            }
-          },
-          /**
-           * Set a reference to the PDF document and the URL in order
-           * to populate the overlay fields with the document properties.
-           * Note that the overlay will contain no information if this method
-           * is not called.
-           *
-           * @param {Object} pdfDocument - A reference to the PDF document.
-           * @param {string} url - The URL of the document.
-           */
-          setDocumentAndUrl: function PDFDocumentProperties_setDocumentAndUrl(pdfDocument, url) {
-            this.pdfDocument = pdfDocument;
-            this.url = url;
-            this.resolveDataAvailable();
-          },
-          /**
-           * @private
-           */
-          _getProperties: function PDFDocumentProperties_getProperties() {
-            if (!OverlayManager.active) {
-              // If the dialog was closed before dataAvailablePromise was resolved,
-              // don't bother updating the properties.
-              return;
-            }
-            // Get the file size (if it hasn't already been set).
-            this.pdfDocument.getDownloadInfo().then(function (data) {
-              if (data.length === this.rawFileSize) {
-                return;
-              }
-              this.setFileSize(data.length);
-              this._updateUI(this.fields['fileSize'], this._parseFileSize());
-            }.bind(this));
-            // Get the document properties.
-            this.pdfDocument.getMetadata().then(function (data) {
-              var content = {
-                'fileName': getPDFFileNameFromURL(this.url),
-                'fileSize': this._parseFileSize(),
-                'title': data.info.Title,
-                'author': data.info.Author,
-                'subject': data.info.Subject,
-                'keywords': data.info.Keywords,
-                'creationDate': this._parseDate(data.info.CreationDate),
-                'modificationDate': this._parseDate(data.info.ModDate),
-                'creator': data.info.Creator,
-                'producer': data.info.Producer,
-                'version': data.info.PDFFormatVersion,
-                'pageCount': this.pdfDocument.numPages
-              };
-              // Show the properties in the dialog.
-              for (var identifier in content) {
-                this._updateUI(this.fields[identifier], content[identifier]);
-              }
-            }.bind(this));
-          },
-          /**
-           * @private
-           */
-          _updateUI: function PDFDocumentProperties_updateUI(field, content) {
-            if (field && content !== undefined && content !== '') {
-              field.textContent = content;
-            }
-          },
-          /**
-           * @private
-           */
-          _parseFileSize: function PDFDocumentProperties_parseFileSize() {
-            var fileSize = this.rawFileSize, kb = fileSize / 1024;
-            if (!kb) {
-              return;
-            } else if (kb < 1024) {
-              return mozL10n.get('document_properties_kb', {
-                size_kb: (+kb.toPrecision(3)).toLocaleString(),
-                size_b: fileSize.toLocaleString()
-              }, '{{size_kb}} KB ({{size_b}} bytes)');
-            } else {
-              return mozL10n.get('document_properties_mb', {
-                size_mb: (+(kb / 1024).toPrecision(3)).toLocaleString(),
-                size_b: fileSize.toLocaleString()
-              }, '{{size_mb}} MB ({{size_b}} bytes)');
-            }
-          },
-          /**
-           * @private
-           */
-          _parseDate: function PDFDocumentProperties_parseDate(inputDate) {
-            // This is implemented according to the PDF specification, but note that
-            // Adobe Reader doesn't handle changing the date to universal time
-            // and doesn't use the user's time zone (they're effectively ignoring
-            // the HH' and mm' parts of the date string).
-            var dateToParse = inputDate;
-            if (dateToParse === undefined) {
-              return '';
-            }
-            // Remove the D: prefix if it is available.
-            if (dateToParse.substring(0, 2) === 'D:') {
-              dateToParse = dateToParse.substring(2);
-            }
-            // Get all elements from the PDF date string.
-            // JavaScript's Date object expects the month to be between
-            // 0 and 11 instead of 1 and 12, so we're correcting for this.
-            var year = parseInt(dateToParse.substring(0, 4), 10);
-            var month = parseInt(dateToParse.substring(4, 6), 10) - 1;
-            var day = parseInt(dateToParse.substring(6, 8), 10);
-            var hours = parseInt(dateToParse.substring(8, 10), 10);
-            var minutes = parseInt(dateToParse.substring(10, 12), 10);
-            var seconds = parseInt(dateToParse.substring(12, 14), 10);
-            var utRel = dateToParse.substring(14, 15);
-            var offsetHours = parseInt(dateToParse.substring(15, 17), 10);
-            var offsetMinutes = parseInt(dateToParse.substring(18, 20), 10);
-            // As per spec, utRel = 'Z' means equal to universal time.
-            // The other cases ('-' and '+') have to be handled here.
-            if (utRel === '-') {
-              hours += offsetHours;
-              minutes += offsetMinutes;
-            } else if (utRel === '+') {
-              hours -= offsetHours;
-              minutes -= offsetMinutes;
-            }
-            // Return the new date format from the user's locale.
-            var date = new Date(Date.UTC(year, month, day, hours, minutes, seconds));
-            var dateString = date.toLocaleDateString();
-            var timeString = date.toLocaleTimeString();
-            return mozL10n.get('document_properties_date_string', {
-              date: dateString,
-              time: timeString
-            }, '{{date}}, {{time}}');
-          }
-        };
-        return PDFDocumentProperties;
-      }();
-      exports.PDFDocumentProperties = PDFDocumentProperties;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebPDFFindController = {}, root.pdfjsWebUIUtils);
-    }(this, function (exports, uiUtils) {
-      var scrollIntoView = uiUtils.scrollIntoView;
-      var FindStates = {
-        FIND_FOUND: 0,
-        FIND_NOTFOUND: 1,
-        FIND_WRAPPED: 2,
-        FIND_PENDING: 3
-      };
-      var FIND_SCROLL_OFFSET_TOP = -50;
-      var FIND_SCROLL_OFFSET_LEFT = -400;
-      var CHARACTERS_TO_NORMALIZE = {
-        '\u2018': '\'',
-        // Left single quotation mark
-        '\u2019': '\'',
-        // Right single quotation mark
-        '\u201A': '\'',
-        // Single low-9 quotation mark
-        '\u201B': '\'',
-        // Single high-reversed-9 quotation mark
-        '\u201C': '"',
-        // Left double quotation mark
-        '\u201D': '"',
-        // Right double quotation mark
-        '\u201E': '"',
-        // Double low-9 quotation mark
-        '\u201F': '"',
-        // Double high-reversed-9 quotation mark
-        '\u00BC': '1/4',
-        // Vulgar fraction one quarter
-        '\u00BD': '1/2',
-        // Vulgar fraction one half
-        '\u00BE': '3/4'
-      };
-      // Vulgar fraction three quarters
-      /**
-       * Provides "search" or "find" functionality for the PDF.
-       * This object actually performs the search for a given string.
-       */
-      var PDFFindController = function PDFFindControllerClosure() {
-        function PDFFindController(options) {
-          this.pdfViewer = options.pdfViewer || null;
-          this.onUpdateResultsCount = null;
-          this.onUpdateState = null;
-          this.reset();
-          // Compile the regular expression for text normalization once.
-          var replace = Object.keys(CHARACTERS_TO_NORMALIZE).join('');
-          this.normalizationRegex = new RegExp('[' + replace + ']', 'g');
-        }
-        PDFFindController.prototype = {
-          reset: function PDFFindController_reset() {
-            this.startedTextExtraction = false;
-            this.extractTextPromises = [];
-            this.pendingFindMatches = Object.create(null);
-            this.active = false;
-            // If active, find results will be highlighted.
-            this.pageContents = [];
-            // Stores the text for each page.
-            this.pageMatches = [];
-            this.pageMatchesLength = null;
-            this.matchCount = 0;
-            this.selected = {
-              // Currently selected match.
-              pageIdx: -1,
-              matchIdx: -1
-            };
-            this.offset = {
-              // Where the find algorithm currently is in the document.
-              pageIdx: null,
-              matchIdx: null
-            };
-            this.pagesToSearch = null;
-            this.resumePageIdx = null;
-            this.state = null;
-            this.dirtyMatch = false;
-            this.findTimeout = null;
-            this.firstPagePromise = new Promise(function (resolve) {
-              this.resolveFirstPage = resolve;
-            }.bind(this));
-          },
-          normalize: function PDFFindController_normalize(text) {
-            return text.replace(this.normalizationRegex, function (ch) {
-              return CHARACTERS_TO_NORMALIZE[ch];
-            });
-          },
-          // Helper for multiple search - fills matchesWithLength array
-          // and takes into account cases when one search term
-          // include another search term (for example, "tamed tame" or "this is").
-          // Looking for intersecting terms in the 'matches' and
-          // leave elements with a longer match-length.
-          _prepareMatches: function PDFFindController_prepareMatches(matchesWithLength, matches, matchesLength) {
-            function isSubTerm(matchesWithLength, currentIndex) {
-              var currentElem, prevElem, nextElem;
-              currentElem = matchesWithLength[currentIndex];
-              nextElem = matchesWithLength[currentIndex + 1];
-              // checking for cases like "TAMEd TAME"
-              if (currentIndex < matchesWithLength.length - 1 && currentElem.match === nextElem.match) {
-                currentElem.skipped = true;
-                return true;
-              }
-              // checking for cases like "thIS IS"
-              for (var i = currentIndex - 1; i >= 0; i--) {
-                prevElem = matchesWithLength[i];
-                if (prevElem.skipped) {
-                  continue;
-                }
-                if (prevElem.match + prevElem.matchLength < currentElem.match) {
-                  break;
-                }
-                if (prevElem.match + prevElem.matchLength >= currentElem.match + currentElem.matchLength) {
-                  currentElem.skipped = true;
-                  return true;
-                }
-              }
-              return false;
-            }
-            var i, len;
-            // Sorting array of objects { match: <match>, matchLength: <matchLength> }
-            // in increasing index first and then the lengths.
-            matchesWithLength.sort(function (a, b) {
-              return a.match === b.match ? a.matchLength - b.matchLength : a.match - b.match;
-            });
-            for (i = 0, len = matchesWithLength.length; i < len; i++) {
-              if (isSubTerm(matchesWithLength, i)) {
-                continue;
-              }
-              matches.push(matchesWithLength[i].match);
-              matchesLength.push(matchesWithLength[i].matchLength);
-            }
-          },
-          calcFindPhraseMatch: function PDFFindController_calcFindPhraseMatch(query, pageIndex, pageContent) {
-            var matches = [];
-            var queryLen = query.length;
-            var matchIdx = -queryLen;
-            while (true) {
-              matchIdx = pageContent.indexOf(query, matchIdx + queryLen);
-              if (matchIdx === -1) {
-                break;
-              }
-              matches.push(matchIdx);
-            }
-            this.pageMatches[pageIndex] = matches;
-          },
-          calcFindWordMatch: function PDFFindController_calcFindWordMatch(query, pageIndex, pageContent) {
-            var matchesWithLength = [];
-            // Divide the query into pieces and search for text on each piece.
-            var queryArray = query.match(/\S+/g);
-            var subquery, subqueryLen, matchIdx;
-            for (var i = 0, len = queryArray.length; i < len; i++) {
-              subquery = queryArray[i];
-              subqueryLen = subquery.length;
-              matchIdx = -subqueryLen;
-              while (true) {
-                matchIdx = pageContent.indexOf(subquery, matchIdx + subqueryLen);
-                if (matchIdx === -1) {
-                  break;
-                }
-                // Other searches do not, so we store the length.
-                matchesWithLength.push({
-                  match: matchIdx,
-                  matchLength: subqueryLen,
-                  skipped: false
-                });
-              }
-            }
-            // Prepare arrays for store the matches.
-            if (!this.pageMatchesLength) {
-              this.pageMatchesLength = [];
-            }
-            this.pageMatchesLength[pageIndex] = [];
-            this.pageMatches[pageIndex] = [];
-            // Sort matchesWithLength, clean up intersecting terms
-            // and put the result into the two arrays.
-            this._prepareMatches(matchesWithLength, this.pageMatches[pageIndex], this.pageMatchesLength[pageIndex]);
-          },
-          calcFindMatch: function PDFFindController_calcFindMatch(pageIndex) {
-            var pageContent = this.normalize(this.pageContents[pageIndex]);
-            var query = this.normalize(this.state.query);
-            var caseSensitive = this.state.caseSensitive;
-            var phraseSearch = this.state.phraseSearch;
-            var queryLen = query.length;
-            if (queryLen === 0) {
-              // Do nothing: the matches should be wiped out already.
-              return;
-            }
-            if (!caseSensitive) {
-              pageContent = pageContent.toLowerCase();
-              query = query.toLowerCase();
-            }
-            if (phraseSearch) {
-              this.calcFindPhraseMatch(query, pageIndex, pageContent);
-            } else {
-              this.calcFindWordMatch(query, pageIndex, pageContent);
-            }
-            this.updatePage(pageIndex);
-            if (this.resumePageIdx === pageIndex) {
-              this.resumePageIdx = null;
-              this.nextPageMatch();
-            }
-            // Update the matches count
-            if (this.pageMatches[pageIndex].length > 0) {
-              this.matchCount += this.pageMatches[pageIndex].length;
-              this.updateUIResultsCount();
-            }
-          },
-          extractText: function PDFFindController_extractText() {
-            if (this.startedTextExtraction) {
-              return;
-            }
-            this.startedTextExtraction = true;
-            this.pageContents = [];
-            var extractTextPromisesResolves = [];
-            var numPages = this.pdfViewer.pagesCount;
-            for (var i = 0; i < numPages; i++) {
-              this.extractTextPromises.push(new Promise(function (resolve) {
-                extractTextPromisesResolves.push(resolve);
-              }));
-            }
-            var self = this;
-            function extractPageText(pageIndex) {
-              self.pdfViewer.getPageTextContent(pageIndex).then(function textContentResolved(textContent) {
-                var textItems = textContent.items;
-                var str = [];
-                for (var i = 0, len = textItems.length; i < len; i++) {
-                  str.push(textItems[i].str);
-                }
-                // Store the pageContent as a string.
-                self.pageContents.push(str.join(''));
-                extractTextPromisesResolves[pageIndex](pageIndex);
-                if (pageIndex + 1 < self.pdfViewer.pagesCount) {
-                  extractPageText(pageIndex + 1);
-                }
-              });
-            }
-            extractPageText(0);
-          },
-          executeCommand: function PDFFindController_executeCommand(cmd, state) {
-            if (this.state === null || cmd !== 'findagain') {
-              this.dirtyMatch = true;
-            }
-            this.state = state;
-            this.updateUIState(FindStates.FIND_PENDING);
-            this.firstPagePromise.then(function () {
-              this.extractText();
-              clearTimeout(this.findTimeout);
-              if (cmd === 'find') {
-                // Only trigger the find action after 250ms of silence.
-                this.findTimeout = setTimeout(this.nextMatch.bind(this), 250);
-              } else {
-                this.nextMatch();
-              }
-            }.bind(this));
-          },
-          updatePage: function PDFFindController_updatePage(index) {
-            if (this.selected.pageIdx === index) {
-              // If the page is selected, scroll the page into view, which triggers
-              // rendering the page, which adds the textLayer. Once the textLayer is
-              // build, it will scroll onto the selected match.
-              this.pdfViewer.currentPageNumber = index + 1;
-            }
-            var page = this.pdfViewer.getPageView(index);
-            if (page.textLayer) {
-              page.textLayer.updateMatches();
-            }
-          },
-          nextMatch: function PDFFindController_nextMatch() {
-            var previous = this.state.findPrevious;
-            var currentPageIndex = this.pdfViewer.currentPageNumber - 1;
-            var numPages = this.pdfViewer.pagesCount;
-            this.active = true;
-            if (this.dirtyMatch) {
-              // Need to recalculate the matches, reset everything.
-              this.dirtyMatch = false;
-              this.selected.pageIdx = this.selected.matchIdx = -1;
-              this.offset.pageIdx = currentPageIndex;
-              this.offset.matchIdx = null;
-              this.hadMatch = false;
-              this.resumePageIdx = null;
-              this.pageMatches = [];
-              this.matchCount = 0;
-              this.pageMatchesLength = null;
-              var self = this;
-              for (var i = 0; i < numPages; i++) {
-                // Wipe out any previous highlighted matches.
-                this.updatePage(i);
-                // As soon as the text is extracted start finding the matches.
-                if (!(i in this.pendingFindMatches)) {
-                  this.pendingFindMatches[i] = true;
-                  this.extractTextPromises[i].then(function (pageIdx) {
-                    delete self.pendingFindMatches[pageIdx];
-                    self.calcFindMatch(pageIdx);
-                  });
-                }
-              }
-            }
-            // If there's no query there's no point in searching.
-            if (this.state.query === '') {
-              this.updateUIState(FindStates.FIND_FOUND);
-              return;
-            }
-            // If we're waiting on a page, we return since we can't do anything else.
-            if (this.resumePageIdx) {
-              return;
-            }
-            var offset = this.offset;
-            // Keep track of how many pages we should maximally iterate through.
-            this.pagesToSearch = numPages;
-            // If there's already a matchIdx that means we are iterating through a
-            // page's matches.
-            if (offset.matchIdx !== null) {
-              var numPageMatches = this.pageMatches[offset.pageIdx].length;
-              if (!previous && offset.matchIdx + 1 < numPageMatches || previous && offset.matchIdx > 0) {
-                // The simple case; we just have advance the matchIdx to select
-                // the next match on the page.
-                this.hadMatch = true;
-                offset.matchIdx = previous ? offset.matchIdx - 1 : offset.matchIdx + 1;
-                this.updateMatch(true);
-                return;
-              }
-              // We went beyond the current page's matches, so we advance to
-              // the next page.
-              this.advanceOffsetPage(previous);
-            }
-            // Start searching through the page.
-            this.nextPageMatch();
-          },
-          matchesReady: function PDFFindController_matchesReady(matches) {
-            var offset = this.offset;
-            var numMatches = matches.length;
-            var previous = this.state.findPrevious;
-            if (numMatches) {
-              // There were matches for the page, so initialize the matchIdx.
-              this.hadMatch = true;
-              offset.matchIdx = previous ? numMatches - 1 : 0;
-              this.updateMatch(true);
-              return true;
-            } else {
-              // No matches, so attempt to search the next page.
-              this.advanceOffsetPage(previous);
-              if (offset.wrapped) {
-                offset.matchIdx = null;
-                if (this.pagesToSearch < 0) {
-                  // No point in wrapping again, there were no matches.
-                  this.updateMatch(false);
-                  // while matches were not found, searching for a page
-                  // with matches should nevertheless halt.
-                  return true;
-                }
-              }
-              // Matches were not found (and searching is not done).
-              return false;
-            }
-          },
-          /**
-           * The method is called back from the text layer when match presentation
-           * is updated.
-           * @param {number} pageIndex - page index.
-           * @param {number} index - match index.
-           * @param {Array} elements - text layer div elements array.
-           * @param {number} beginIdx - start index of the div array for the match.
-           */
-          updateMatchPosition: function PDFFindController_updateMatchPosition(pageIndex, index, elements, beginIdx) {
-            if (this.selected.matchIdx === index && this.selected.pageIdx === pageIndex) {
-              var spot = {
-                top: FIND_SCROLL_OFFSET_TOP,
-                left: FIND_SCROLL_OFFSET_LEFT
-              };
-              scrollIntoView(elements[beginIdx], spot, /* skipOverflowHiddenElements = */
-              true);
-            }
-          },
-          nextPageMatch: function PDFFindController_nextPageMatch() {
-            if (this.resumePageIdx !== null) {
-              console.error('There can only be one pending page.');
-            }
-            do {
-              var pageIdx = this.offset.pageIdx;
-              var matches = this.pageMatches[pageIdx];
-              if (!matches) {
-                // The matches don't exist yet for processing by "matchesReady",
-                // so set a resume point for when they do exist.
-                this.resumePageIdx = pageIdx;
-                break;
-              }
-            } while (!this.matchesReady(matches));
-          },
-          advanceOffsetPage: function PDFFindController_advanceOffsetPage(previous) {
-            var offset = this.offset;
-            var numPages = this.extractTextPromises.length;
-            offset.pageIdx = previous ? offset.pageIdx - 1 : offset.pageIdx + 1;
-            offset.matchIdx = null;
-            this.pagesToSearch--;
-            if (offset.pageIdx >= numPages || offset.pageIdx < 0) {
-              offset.pageIdx = previous ? numPages - 1 : 0;
-              offset.wrapped = true;
-            }
-          },
-          updateMatch: function PDFFindController_updateMatch(found) {
-            var state = FindStates.FIND_NOTFOUND;
-            var wrapped = this.offset.wrapped;
-            this.offset.wrapped = false;
-            if (found) {
-              var previousPage = this.selected.pageIdx;
-              this.selected.pageIdx = this.offset.pageIdx;
-              this.selected.matchIdx = this.offset.matchIdx;
-              state = wrapped ? FindStates.FIND_WRAPPED : FindStates.FIND_FOUND;
-              // Update the currently selected page to wipe out any selected matches.
-              if (previousPage !== -1 && previousPage !== this.selected.pageIdx) {
-                this.updatePage(previousPage);
-              }
-            }
-            this.updateUIState(state, this.state.findPrevious);
-            if (this.selected.pageIdx !== -1) {
-              this.updatePage(this.selected.pageIdx);
-            }
-          },
-          updateUIResultsCount: function PDFFindController_updateUIResultsCount() {
-            if (this.onUpdateResultsCount) {
-              this.onUpdateResultsCount(this.matchCount);
-            }
-          },
-          updateUIState: function PDFFindController_updateUIState(state, previous) {
-            if (this.onUpdateState) {
-              this.onUpdateState(state, previous, this.matchCount);
-            }
-          }
-        };
-        return PDFFindController;
-      }();
-      exports.FindStates = FindStates;
-      exports.PDFFindController = PDFFindController;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebPDFPresentationMode = {}, root.pdfjsWebUIUtils);
-    }(this, function (exports, uiUtils) {
-      var normalizeWheelEventDelta = uiUtils.normalizeWheelEventDelta;
-      var DELAY_BEFORE_RESETTING_SWITCH_IN_PROGRESS = 1500;
-      // in ms
-      var DELAY_BEFORE_HIDING_CONTROLS = 3000;
-      // in ms
-      var ACTIVE_SELECTOR = 'pdfPresentationMode';
-      var CONTROLS_SELECTOR = 'pdfPresentationModeControls';
-      /**
-       * @typedef {Object} PDFPresentationModeOptions
-       * @property {HTMLDivElement} container - The container for the viewer element.
-       * @property {HTMLDivElement} viewer - (optional) The viewer element.
-       * @property {PDFViewer} pdfViewer - The document viewer.
-       * @property {EventBus} eventBus - The application event bus.
-       * @property {Array} contextMenuItems - (optional) The menuitems that are added
-       *   to the context menu in Presentation Mode.
-       */
-      /**
-       * @class
-       */
-      var PDFPresentationMode = function PDFPresentationModeClosure() {
-        /**
-         * @constructs PDFPresentationMode
-         * @param {PDFPresentationModeOptions} options
-         */
-        function PDFPresentationMode(options) {
-          this.container = options.container;
-          this.viewer = options.viewer || options.container.firstElementChild;
-          this.pdfViewer = options.pdfViewer;
-          this.eventBus = options.eventBus;
-          var contextMenuItems = options.contextMenuItems || null;
-          this.active = false;
-          this.args = null;
-          this.contextMenuOpen = false;
-          this.mouseScrollTimeStamp = 0;
-          this.mouseScrollDelta = 0;
-          this.touchSwipeState = null;
-          if (contextMenuItems) {
-            contextMenuItems.contextFirstPage.addEventListener('click', function PDFPresentationMode_contextFirstPageClick(e) {
-              this.contextMenuOpen = false;
-              this.eventBus.dispatch('firstpage');
-            }.bind(this));
-            contextMenuItems.contextLastPage.addEventListener('click', function PDFPresentationMode_contextLastPageClick(e) {
-              this.contextMenuOpen = false;
-              this.eventBus.dispatch('lastpage');
-            }.bind(this));
-            contextMenuItems.contextPageRotateCw.addEventListener('click', function PDFPresentationMode_contextPageRotateCwClick(e) {
-              this.contextMenuOpen = false;
-              this.eventBus.dispatch('rotatecw');
-            }.bind(this));
-            contextMenuItems.contextPageRotateCcw.addEventListener('click', function PDFPresentationMode_contextPageRotateCcwClick(e) {
-              this.contextMenuOpen = false;
-              this.eventBus.dispatch('rotateccw');
-            }.bind(this));
-          }
-        }
-        PDFPresentationMode.prototype = {
-          /**
-           * Request the browser to enter fullscreen mode.
-           * @returns {boolean} Indicating if the request was successful.
-           */
-          request: function PDFPresentationMode_request() {
-            if (this.switchInProgress || this.active || !this.viewer.hasChildNodes()) {
-              return false;
-            }
-            this._addFullscreenChangeListeners();
-            this._setSwitchInProgress();
-            this._notifyStateChange();
-            if (this.container.requestFullscreen) {
-              this.container.requestFullscreen();
-            } else if (this.container.mozRequestFullScreen) {
-              this.container.mozRequestFullScreen();
-            } else if (this.container.webkitRequestFullscreen) {
-              this.container.webkitRequestFullscreen(Element.ALLOW_KEYBOARD_INPUT);
-            } else if (this.container.msRequestFullscreen) {
-              this.container.msRequestFullscreen();
-            } else {
-              return false;
-            }
-            this.args = {
-              page: this.pdfViewer.currentPageNumber,
-              previousScale: this.pdfViewer.currentScaleValue
-            };
-            return true;
-          },
-          /**
-           * @private
-           */
-          _mouseWheel: function PDFPresentationMode_mouseWheel(evt) {
-            if (!this.active) {
-              return;
-            }
-            evt.preventDefault();
-            var delta = normalizeWheelEventDelta(evt);
-            var MOUSE_SCROLL_COOLDOWN_TIME = 50;
-            var PAGE_SWITCH_THRESHOLD = 0.1;
-            var currentTime = new Date().getTime();
-            var storedTime = this.mouseScrollTimeStamp;
-            // If we've already switched page, avoid accidentally switching again.
-            if (currentTime > storedTime && currentTime - storedTime < MOUSE_SCROLL_COOLDOWN_TIME) {
-              return;
-            }
-            // If the scroll direction changed, reset the accumulated scroll delta.
-            if (this.mouseScrollDelta > 0 && delta < 0 || this.mouseScrollDelta < 0 && delta > 0) {
-              this._resetMouseScrollState();
-            }
-            this.mouseScrollDelta += delta;
-            if (Math.abs(this.mouseScrollDelta) >= PAGE_SWITCH_THRESHOLD) {
-              var totalDelta = this.mouseScrollDelta;
-              this._resetMouseScrollState();
-              var success = totalDelta > 0 ? this._goToPreviousPage() : this._goToNextPage();
-              if (success) {
-                this.mouseScrollTimeStamp = currentTime;
-              }
-            }
-          },
-          get isFullscreen() {
-            return !!(document.fullscreenElement || document.mozFullScreen || document.webkitIsFullScreen || document.msFullscreenElement);
-          },
-          /**
-           * @private
-           */
-          _goToPreviousPage: function PDFPresentationMode_goToPreviousPage() {
-            var page = this.pdfViewer.currentPageNumber;
-            // If we're at the first page, we don't need to do anything.
-            if (page <= 1) {
-              return false;
-            }
-            this.pdfViewer.currentPageNumber = page - 1;
-            return true;
-          },
-          /**
-           * @private
-           */
-          _goToNextPage: function PDFPresentationMode_goToNextPage() {
-            var page = this.pdfViewer.currentPageNumber;
-            // If we're at the last page, we don't need to do anything.
-            if (page >= this.pdfViewer.pagesCount) {
-              return false;
-            }
-            this.pdfViewer.currentPageNumber = page + 1;
-            return true;
-          },
-          /**
-           * @private
-           */
-          _notifyStateChange: function PDFPresentationMode_notifyStateChange() {
-            this.eventBus.dispatch('presentationmodechanged', {
-              source: this,
-              active: this.active,
-              switchInProgress: !!this.switchInProgress
-            });
-          },
-          /**
-           * Used to initialize a timeout when requesting Presentation Mode,
-           * i.e. when the browser is requested to enter fullscreen mode.
-           * This timeout is used to prevent the current page from being scrolled
-           * partially, or completely, out of view when entering Presentation Mode.
-           * NOTE: This issue seems limited to certain zoom levels (e.g. page-width).
-           * @private
-           */
-          _setSwitchInProgress: function PDFPresentationMode_setSwitchInProgress() {
-            if (this.switchInProgress) {
-              clearTimeout(this.switchInProgress);
-            }
-            this.switchInProgress = setTimeout(function switchInProgressTimeout() {
-              this._removeFullscreenChangeListeners();
-              delete this.switchInProgress;
-              this._notifyStateChange();
-            }.bind(this), DELAY_BEFORE_RESETTING_SWITCH_IN_PROGRESS);
-          },
-          /**
-           * @private
-           */
-          _resetSwitchInProgress: function PDFPresentationMode_resetSwitchInProgress() {
-            if (this.switchInProgress) {
-              clearTimeout(this.switchInProgress);
-              delete this.switchInProgress;
-            }
-          },
-          /**
-           * @private
-           */
-          _enter: function PDFPresentationMode_enter() {
-            this.active = true;
-            this._resetSwitchInProgress();
-            this._notifyStateChange();
-            this.container.classList.add(ACTIVE_SELECTOR);
-            // Ensure that the correct page is scrolled into view when entering
-            // Presentation Mode, by waiting until fullscreen mode in enabled.
-            setTimeout(function enterPresentationModeTimeout() {
-              this.pdfViewer.currentPageNumber = this.args.page;
-              this.pdfViewer.currentScaleValue = 'page-fit';
-            }.bind(this), 0);
-            this._addWindowListeners();
-            this._showControls();
-            this.contextMenuOpen = false;
-            this.container.setAttribute('contextmenu', 'viewerContextMenu');
-            // Text selection is disabled in Presentation Mode, thus it's not possible
-            // for the user to deselect text that is selected (e.g. with "Select all")
-            // when entering Presentation Mode, hence we remove any active selection.
-            window.getSelection().removeAllRanges();
-          },
-          /**
-           * @private
-           */
-          _exit: function PDFPresentationMode_exit() {
-            var page = this.pdfViewer.currentPageNumber;
-            this.container.classList.remove(ACTIVE_SELECTOR);
-            // Ensure that the correct page is scrolled into view when exiting
-            // Presentation Mode, by waiting until fullscreen mode is disabled.
-            setTimeout(function exitPresentationModeTimeout() {
-              this.active = false;
-              this._removeFullscreenChangeListeners();
-              this._notifyStateChange();
-              this.pdfViewer.currentScaleValue = this.args.previousScale;
-              this.pdfViewer.currentPageNumber = page;
-              this.args = null;
-            }.bind(this), 0);
-            this._removeWindowListeners();
-            this._hideControls();
-            this._resetMouseScrollState();
-            this.container.removeAttribute('contextmenu');
-            this.contextMenuOpen = false;
-          },
-          /**
-           * @private
-           */
-          _mouseDown: function PDFPresentationMode_mouseDown(evt) {
-            if (this.contextMenuOpen) {
-              this.contextMenuOpen = false;
-              evt.preventDefault();
-              return;
-            }
-            if (evt.button === 0) {
-              // Enable clicking of links in presentation mode. Please note:
-              // Only links pointing to destinations in the current PDF document work.
-              var isInternalLink = evt.target.href && evt.target.classList.contains('internalLink');
-              if (!isInternalLink) {
-                // Unless an internal link was clicked, advance one page.
-                evt.preventDefault();
-                this.pdfViewer.currentPageNumber += evt.shiftKey ? -1 : 1;
-              }
-            }
-          },
-          /**
-           * @private
-           */
-          _contextMenu: function PDFPresentationMode_contextMenu() {
-            this.contextMenuOpen = true;
-          },
-          /**
-           * @private
-           */
-          _showControls: function PDFPresentationMode_showControls() {
-            if (this.controlsTimeout) {
-              clearTimeout(this.controlsTimeout);
-            } else {
-              this.container.classList.add(CONTROLS_SELECTOR);
-            }
-            this.controlsTimeout = setTimeout(function showControlsTimeout() {
-              this.container.classList.remove(CONTROLS_SELECTOR);
-              delete this.controlsTimeout;
-            }.bind(this), DELAY_BEFORE_HIDING_CONTROLS);
-          },
-          /**
-           * @private
-           */
-          _hideControls: function PDFPresentationMode_hideControls() {
-            if (!this.controlsTimeout) {
-              return;
-            }
-            clearTimeout(this.controlsTimeout);
-            this.container.classList.remove(CONTROLS_SELECTOR);
-            delete this.controlsTimeout;
-          },
-          /**
-           * Resets the properties used for tracking mouse scrolling events.
-           * @private
-           */
-          _resetMouseScrollState: function PDFPresentationMode_resetMouseScrollState() {
-            this.mouseScrollTimeStamp = 0;
-            this.mouseScrollDelta = 0;
-          },
-          /**
-           * @private
-           */
-          _touchSwipe: function PDFPresentationMode_touchSwipe(evt) {
-            if (!this.active) {
-              return;
-            }
-            // Must move at least these many CSS pixels for it to count as a swipe
-            var SWIPE_MIN_DISTANCE_THRESHOLD = 50;
-            // The swipe angle is allowed to deviate from the x or y axis by this much
-            // before it is not considered a swipe in that direction any more.
-            var SWIPE_ANGLE_THRESHOLD = Math.PI / 6;
-            if (evt.touches.length > 1) {
-              // Multiple touch points detected, cancel the swipe.
-              this.touchSwipeState = null;
-              return;
-            }
-            switch (evt.type) {
-            case 'touchstart':
-              this.touchSwipeState = {
-                startX: evt.touches[0].pageX,
-                startY: evt.touches[0].pageY,
-                endX: evt.touches[0].pageX,
-                endY: evt.touches[0].pageY
-              };
-              break;
-            case 'touchmove':
-              if (this.touchSwipeState === null) {
-                return;
-              }
-              this.touchSwipeState.endX = evt.touches[0].pageX;
-              this.touchSwipeState.endY = evt.touches[0].pageY;
-              // Do a preventDefault to avoid the swipe from triggering browser
-              // gestures (Chrome in particular has some sort of swipe gesture in
-              // fullscreen mode).
-              evt.preventDefault();
-              break;
-            case 'touchend':
-              if (this.touchSwipeState === null) {
-                return;
-              }
-              var delta = 0;
-              var dx = this.touchSwipeState.endX - this.touchSwipeState.startX;
-              var dy = this.touchSwipeState.endY - this.touchSwipeState.startY;
-              var absAngle = Math.abs(Math.atan2(dy, dx));
-              if (Math.abs(dx) > SWIPE_MIN_DISTANCE_THRESHOLD && (absAngle <= SWIPE_ANGLE_THRESHOLD || absAngle >= Math.PI - SWIPE_ANGLE_THRESHOLD)) {
-                // horizontal swipe
-                delta = dx;
-              } else if (Math.abs(dy) > SWIPE_MIN_DISTANCE_THRESHOLD && Math.abs(absAngle - Math.PI / 2) <= SWIPE_ANGLE_THRESHOLD) {
-                // vertical swipe
-                delta = dy;
-              }
-              if (delta > 0) {
-                this._goToPreviousPage();
-              } else if (delta < 0) {
-                this._goToNextPage();
-              }
-              break;
-            }
-          },
-          /**
-           * @private
-           */
-          _addWindowListeners: function PDFPresentationMode_addWindowListeners() {
-            this.showControlsBind = this._showControls.bind(this);
-            this.mouseDownBind = this._mouseDown.bind(this);
-            this.mouseWheelBind = this._mouseWheel.bind(this);
-            this.resetMouseScrollStateBind = this._resetMouseScrollState.bind(this);
-            this.contextMenuBind = this._contextMenu.bind(this);
-            this.touchSwipeBind = this._touchSwipe.bind(this);
-            window.addEventListener('mousemove', this.showControlsBind);
-            window.addEventListener('mousedown', this.mouseDownBind);
-            window.addEventListener('wheel', this.mouseWheelBind);
-            window.addEventListener('keydown', this.resetMouseScrollStateBind);
-            window.addEventListener('contextmenu', this.contextMenuBind);
-            window.addEventListener('touchstart', this.touchSwipeBind);
-            window.addEventListener('touchmove', this.touchSwipeBind);
-            window.addEventListener('touchend', this.touchSwipeBind);
-          },
-          /**
-           * @private
-           */
-          _removeWindowListeners: function PDFPresentationMode_removeWindowListeners() {
-            window.removeEventListener('mousemove', this.showControlsBind);
-            window.removeEventListener('mousedown', this.mouseDownBind);
-            window.removeEventListener('wheel', this.mouseWheelBind);
-            window.removeEventListener('keydown', this.resetMouseScrollStateBind);
-            window.removeEventListener('contextmenu', this.contextMenuBind);
-            window.removeEventListener('touchstart', this.touchSwipeBind);
-            window.removeEventListener('touchmove', this.touchSwipeBind);
-            window.removeEventListener('touchend', this.touchSwipeBind);
-            delete this.showControlsBind;
-            delete this.mouseDownBind;
-            delete this.mouseWheelBind;
-            delete this.resetMouseScrollStateBind;
-            delete this.contextMenuBind;
-            delete this.touchSwipeBind;
-          },
-          /**
-           * @private
-           */
-          _fullscreenChange: function PDFPresentationMode_fullscreenChange() {
-            if (this.isFullscreen) {
-              this._enter();
-            } else {
-              this._exit();
-            }
-          },
-          /**
-           * @private
-           */
-          _addFullscreenChangeListeners: function PDFPresentationMode_addFullscreenChangeListeners() {
-            this.fullscreenChangeBind = this._fullscreenChange.bind(this);
-            window.addEventListener('fullscreenchange', this.fullscreenChangeBind);
-            window.addEventListener('mozfullscreenchange', this.fullscreenChangeBind);
-          },
-          /**
-           * @private
-           */
-          _removeFullscreenChangeListeners: function PDFPresentationMode_removeFullscreenChangeListeners() {
-            window.removeEventListener('fullscreenchange', this.fullscreenChangeBind);
-            window.removeEventListener('mozfullscreenchange', this.fullscreenChangeBind);
-            delete this.fullscreenChangeBind;
-          }
-        };
-        return PDFPresentationMode;
-      }();
-      exports.PDFPresentationMode = PDFPresentationMode;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebPDFThumbnailView = {}, root.pdfjsWebUIUtils, root.pdfjsWebPDFRenderingQueue);
-    }(this, function (exports, uiUtils, pdfRenderingQueue) {
-      var mozL10n = uiUtils.mozL10n;
-      var getOutputScale = uiUtils.getOutputScale;
-      var RenderingStates = pdfRenderingQueue.RenderingStates;
-      var THUMBNAIL_WIDTH = 98;
-      // px
-      var THUMBNAIL_CANVAS_BORDER_WIDTH = 1;
-      // px
-      /**
-       * @typedef {Object} PDFThumbnailViewOptions
-       * @property {HTMLDivElement} container - The viewer element.
-       * @property {number} id - The thumbnail's unique ID (normally its number).
-       * @property {PageViewport} defaultViewport - The page viewport.
-       * @property {IPDFLinkService} linkService - The navigation/linking service.
-       * @property {PDFRenderingQueue} renderingQueue - The rendering queue object.
-       * @property {boolean} disableCanvasToImageConversion - (optional) Don't convert
-       *   the canvas thumbnails to images. This prevents `toDataURL` calls,
-       *   but increases the overall memory usage. The default value is false.
-       */
-      /**
-       * @class
-       * @implements {IRenderableView}
-       */
-      var PDFThumbnailView = function PDFThumbnailViewClosure() {
-        function getTempCanvas(width, height) {
-          var tempCanvas = PDFThumbnailView.tempImageCache;
-          if (!tempCanvas) {
-            tempCanvas = document.createElement('canvas');
-            PDFThumbnailView.tempImageCache = tempCanvas;
-          }
-          tempCanvas.width = width;
-          tempCanvas.height = height;
-          tempCanvas.mozOpaque = true;
-          var ctx = tempCanvas.getContext('2d', { alpha: false });
-          ctx.save();
-          ctx.fillStyle = 'rgb(255, 255, 255)';
-          ctx.fillRect(0, 0, width, height);
-          ctx.restore();
-          return tempCanvas;
-        }
-        /**
-         * @constructs PDFThumbnailView
-         * @param {PDFThumbnailViewOptions} options
-         */
-        function PDFThumbnailView(options) {
-          var container = options.container;
-          var id = options.id;
-          var defaultViewport = options.defaultViewport;
-          var linkService = options.linkService;
-          var renderingQueue = options.renderingQueue;
-          var disableCanvasToImageConversion = options.disableCanvasToImageConversion || false;
-          this.id = id;
-          this.renderingId = 'thumbnail' + id;
-          this.pageLabel = null;
-          this.pdfPage = null;
-          this.rotation = 0;
-          this.viewport = defaultViewport;
-          this.pdfPageRotate = defaultViewport.rotation;
-          this.linkService = linkService;
-          this.renderingQueue = renderingQueue;
-          this.renderTask = null;
-          this.renderingState = RenderingStates.INITIAL;
-          this.resume = null;
-          this.disableCanvasToImageConversion = disableCanvasToImageConversion;
-          this.pageWidth = this.viewport.width;
-          this.pageHeight = this.viewport.height;
-          this.pageRatio = this.pageWidth / this.pageHeight;
-          this.canvasWidth = THUMBNAIL_WIDTH;
-          this.canvasHeight = this.canvasWidth / this.pageRatio | 0;
-          this.scale = this.canvasWidth / this.pageWidth;
-          var anchor = document.createElement('a');
-          anchor.href = linkService.getAnchorUrl('#page=' + id);
-          anchor.title = mozL10n.get('thumb_page_title', { page: id }, 'Page {{page}}');
-          anchor.onclick = function stopNavigation() {
-            linkService.page = id;
-            return false;
-          };
-          this.anchor = anchor;
-          var div = document.createElement('div');
-          div.id = 'thumbnailContainer' + id;
-          div.className = 'thumbnail';
-          this.div = div;
-          if (id === 1) {
-            // Highlight the thumbnail of the first page when no page number is
-            // specified (or exists in cache) when the document is loaded.
-            div.classList.add('selected');
-          }
-          var ring = document.createElement('div');
-          ring.className = 'thumbnailSelectionRing';
-          var borderAdjustment = 2 * THUMBNAIL_CANVAS_BORDER_WIDTH;
-          ring.style.width = this.canvasWidth + borderAdjustment + 'px';
-          ring.style.height = this.canvasHeight + borderAdjustment + 'px';
-          this.ring = ring;
-          div.appendChild(ring);
-          anchor.appendChild(div);
-          container.appendChild(anchor);
-        }
-        PDFThumbnailView.prototype = {
-          setPdfPage: function PDFThumbnailView_setPdfPage(pdfPage) {
-            this.pdfPage = pdfPage;
-            this.pdfPageRotate = pdfPage.rotate;
-            var totalRotation = (this.rotation + this.pdfPageRotate) % 360;
-            this.viewport = pdfPage.getViewport(1, totalRotation);
-            this.reset();
-          },
-          reset: function PDFThumbnailView_reset() {
-            this.cancelRendering();
-            this.pageWidth = this.viewport.width;
-            this.pageHeight = this.viewport.height;
-            this.pageRatio = this.pageWidth / this.pageHeight;
-            this.canvasHeight = this.canvasWidth / this.pageRatio | 0;
-            this.scale = this.canvasWidth / this.pageWidth;
-            this.div.removeAttribute('data-loaded');
-            var ring = this.ring;
-            var childNodes = ring.childNodes;
-            for (var i = childNodes.length - 1; i >= 0; i--) {
-              ring.removeChild(childNodes[i]);
-            }
-            var borderAdjustment = 2 * THUMBNAIL_CANVAS_BORDER_WIDTH;
-            ring.style.width = this.canvasWidth + borderAdjustment + 'px';
-            ring.style.height = this.canvasHeight + borderAdjustment + 'px';
-            if (this.canvas) {
-              // Zeroing the width and height causes Firefox to release graphics
-              // resources immediately, which can greatly reduce memory consumption.
-              this.canvas.width = 0;
-              this.canvas.height = 0;
-              delete this.canvas;
-            }
-            if (this.image) {
-              this.image.removeAttribute('src');
-              delete this.image;
-            }
-          },
-          update: function PDFThumbnailView_update(rotation) {
-            if (typeof rotation !== 'undefined') {
-              this.rotation = rotation;
-            }
-            var totalRotation = (this.rotation + this.pdfPageRotate) % 360;
-            this.viewport = this.viewport.clone({
-              scale: 1,
-              rotation: totalRotation
-            });
-            this.reset();
-          },
-          cancelRendering: function PDFThumbnailView_cancelRendering() {
-            if (this.renderTask) {
-              this.renderTask.cancel();
-              this.renderTask = null;
-            }
-            this.renderingState = RenderingStates.INITIAL;
-            this.resume = null;
-          },
-          /**
-           * @private
-           */
-          _getPageDrawContext: function PDFThumbnailView_getPageDrawContext(noCtxScale) {
-            var canvas = document.createElement('canvas');
-            // Keep the no-thumbnail outline visible, i.e. `data-loaded === false`,
-            // until rendering/image conversion is complete, to avoid display issues.
-            this.canvas = canvas;
-            canvas.mozOpaque = true;
-            var ctx = canvas.getContext('2d', { alpha: false });
-            var outputScale = getOutputScale(ctx);
-            canvas.width = this.canvasWidth * outputScale.sx | 0;
-            canvas.height = this.canvasHeight * outputScale.sy | 0;
-            canvas.style.width = this.canvasWidth + 'px';
-            canvas.style.height = this.canvasHeight + 'px';
-            if (!noCtxScale && outputScale.scaled) {
-              ctx.scale(outputScale.sx, outputScale.sy);
-            }
-            return ctx;
-          },
-          /**
-           * @private
-           */
-          _convertCanvasToImage: function PDFThumbnailView_convertCanvasToImage() {
-            if (!this.canvas) {
-              return;
-            }
-            if (this.renderingState !== RenderingStates.FINISHED) {
-              return;
-            }
-            var id = this.renderingId;
-            var className = 'thumbnailImage';
-            var ariaLabel = mozL10n.get('thumb_page_canvas', { page: this.pageId }, 'Thumbnail of Page {{page}}');
-            if (this.disableCanvasToImageConversion) {
-              this.canvas.id = id;
-              this.canvas.className = className;
-              this.canvas.setAttribute('aria-label', ariaLabel);
-              this.div.setAttribute('data-loaded', true);
-              this.ring.appendChild(this.canvas);
-              return;
-            }
-            var image = document.createElement('img');
-            image.id = id;
-            image.className = className;
-            image.setAttribute('aria-label', ariaLabel);
-            image.style.width = this.canvasWidth + 'px';
-            image.style.height = this.canvasHeight + 'px';
-            image.src = this.canvas.toDataURL();
-            this.image = image;
-            this.div.setAttribute('data-loaded', true);
-            this.ring.appendChild(image);
-            // Zeroing the width and height causes Firefox to release graphics
-            // resources immediately, which can greatly reduce memory consumption.
-            this.canvas.width = 0;
-            this.canvas.height = 0;
-            delete this.canvas;
-          },
-          draw: function PDFThumbnailView_draw() {
-            if (this.renderingState !== RenderingStates.INITIAL) {
-              console.error('Must be in new state before drawing');
-              return Promise.resolve(undefined);
-            }
-            this.renderingState = RenderingStates.RUNNING;
-            var resolveRenderPromise, rejectRenderPromise;
-            var promise = new Promise(function (resolve, reject) {
-              resolveRenderPromise = resolve;
-              rejectRenderPromise = reject;
-            });
-            var self = this;
-            function thumbnailDrawCallback(error) {
-              // The renderTask may have been replaced by a new one, so only remove
-              // the reference to the renderTask if it matches the one that is
-              // triggering this callback.
-              if (renderTask === self.renderTask) {
-                self.renderTask = null;
-              }
-              if (error === 'cancelled') {
-                rejectRenderPromise(error);
-                return;
-              }
-              self.renderingState = RenderingStates.FINISHED;
-              self._convertCanvasToImage();
-              if (!error) {
-                resolveRenderPromise(undefined);
-              } else {
-                rejectRenderPromise(error);
-              }
-            }
-            var ctx = this._getPageDrawContext();
-            var drawViewport = this.viewport.clone({ scale: this.scale });
-            var renderContinueCallback = function renderContinueCallback(cont) {
-              if (!self.renderingQueue.isHighestPriority(self)) {
-                self.renderingState = RenderingStates.PAUSED;
-                self.resume = function resumeCallback() {
-                  self.renderingState = RenderingStates.RUNNING;
-                  cont();
-                };
-                return;
-              }
-              cont();
-            };
-            var renderContext = {
-              canvasContext: ctx,
-              viewport: drawViewport
-            };
-            var renderTask = this.renderTask = this.pdfPage.render(renderContext);
-            renderTask.onContinue = renderContinueCallback;
-            renderTask.promise.then(function pdfPageRenderCallback() {
-              thumbnailDrawCallback(null);
-            }, function pdfPageRenderError(error) {
-              thumbnailDrawCallback(error);
-            });
-            return promise;
-          },
-          setImage: function PDFThumbnailView_setImage(pageView) {
-            if (this.renderingState !== RenderingStates.INITIAL) {
-              return;
-            }
-            var img = pageView.canvas;
-            if (!img) {
-              return;
-            }
-            if (!this.pdfPage) {
-              this.setPdfPage(pageView.pdfPage);
-            }
-            this.renderingState = RenderingStates.FINISHED;
-            var ctx = this._getPageDrawContext(true);
-            var canvas = ctx.canvas;
-            if (img.width <= 2 * canvas.width) {
-              ctx.drawImage(img, 0, 0, img.width, img.height, 0, 0, canvas.width, canvas.height);
-              this._convertCanvasToImage();
-              return;
-            }
-            // drawImage does an awful job of rescaling the image, doing it gradually.
-            var MAX_NUM_SCALING_STEPS = 3;
-            var reducedWidth = canvas.width << MAX_NUM_SCALING_STEPS;
-            var reducedHeight = canvas.height << MAX_NUM_SCALING_STEPS;
-            var reducedImage = getTempCanvas(reducedWidth, reducedHeight);
-            var reducedImageCtx = reducedImage.getContext('2d');
-            while (reducedWidth > img.width || reducedHeight > img.height) {
-              reducedWidth >>= 1;
-              reducedHeight >>= 1;
-            }
-            reducedImageCtx.drawImage(img, 0, 0, img.width, img.height, 0, 0, reducedWidth, reducedHeight);
-            while (reducedWidth > 2 * canvas.width) {
-              reducedImageCtx.drawImage(reducedImage, 0, 0, reducedWidth, reducedHeight, 0, 0, reducedWidth >> 1, reducedHeight >> 1);
-              reducedWidth >>= 1;
-              reducedHeight >>= 1;
-            }
-            ctx.drawImage(reducedImage, 0, 0, reducedWidth, reducedHeight, 0, 0, canvas.width, canvas.height);
-            this._convertCanvasToImage();
-          },
-          get pageId() {
-            return this.pageLabel !== null ? this.pageLabel : this.id;
-          },
-          /**
-           * @param {string|null} label
-           */
-          setPageLabel: function PDFThumbnailView_setPageLabel(label) {
-            this.pageLabel = typeof label === 'string' ? label : null;
-            this.anchor.title = mozL10n.get('thumb_page_title', { page: this.pageId }, 'Page {{page}}');
-            if (this.renderingState !== RenderingStates.FINISHED) {
-              return;
-            }
-            var ariaLabel = mozL10n.get('thumb_page_canvas', { page: this.pageId }, 'Thumbnail of Page {{page}}');
-            if (this.image) {
-              this.image.setAttribute('aria-label', ariaLabel);
-            } else if (this.disableCanvasToImageConversion && this.canvas) {
-              this.canvas.setAttribute('aria-label', ariaLabel);
-            }
-          }
-        };
-        return PDFThumbnailView;
-      }();
-      PDFThumbnailView.tempImageCache = null;
-      exports.PDFThumbnailView = PDFThumbnailView;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebSecondaryToolbar = {}, root.pdfjsWebUIUtils);
-    }(this, function (exports, uiUtils) {
-      var SCROLLBAR_PADDING = uiUtils.SCROLLBAR_PADDING;
-      var mozL10n = uiUtils.mozL10n;
-      /**
-       * @typedef {Object} SecondaryToolbarOptions
-       * @property {HTMLDivElement} toolbar - Container for the secondary toolbar.
-       * @property {HTMLButtonElement} toggleButton - Button to toggle the visibility
-       *   of the secondary toolbar.
-       * @property {HTMLDivElement} toolbarButtonContainer - Container where all the
-       *   toolbar buttons are placed. The maximum height of the toolbar is controlled
-       *   dynamically by adjusting the 'max-height' CSS property of this DOM element.
-       * @property {HTMLButtonElement} presentationModeButton - Button for entering
-       *   presentation mode.
-       * @property {HTMLButtonElement} openFileButton - Button to open a file.
-       * @property {HTMLButtonElement} printButton - Button to print the document.
-       * @property {HTMLButtonElement} downloadButton - Button to download the
-       *   document.
-       * @property {HTMLLinkElement} viewBookmarkButton - Button to obtain a bookmark
-       *   link to the current location in the document.
-       * @property {HTMLButtonElement} firstPageButton - Button to go to the first
-       *   page in the document.
-       * @property {HTMLButtonElement} lastPageButton - Button to go to the last page
-       *   in the document.
-       * @property {HTMLButtonElement} pageRotateCwButton - Button to rotate the pages
-       *   clockwise.
-       * @property {HTMLButtonElement} pageRotateCcwButton - Button to rotate the
-       *   pages counterclockwise.
-       * @property {HTMLButtonElement} toggleHandToolButton - Button to toggle the
-       *   hand tool.
-       * @property {HTMLButtonElement} documentPropertiesButton - Button for opening
-       *   the document properties dialog.
-       */
-      /**
-       * @class
-       */
-      var SecondaryToolbar = function SecondaryToolbarClosure() {
-        /**
-         * @constructs SecondaryToolbar
-         * @param {SecondaryToolbarOptions} options
-         * @param {HTMLDivElement} mainContainer
-         * @param {EventBus} eventBus
-         */
-        function SecondaryToolbar(options, mainContainer, eventBus) {
-          this.toolbar = options.toolbar;
-          this.toggleButton = options.toggleButton;
-          this.toolbarButtonContainer = options.toolbarButtonContainer;
-          this.buttons = [
-            {
-              element: options.presentationModeButton,
-              eventName: 'presentationmode',
-              close: true
-            },
-            {
-              element: options.openFileButton,
-              eventName: 'openfile',
-              close: true
-            },
-            {
-              element: options.printButton,
-              eventName: 'print',
-              close: true
-            },
-            {
-              element: options.downloadButton,
-              eventName: 'download',
-              close: true
-            },
-            {
-              element: options.viewBookmarkButton,
-              eventName: null,
-              close: true
-            },
-            {
-              element: options.firstPageButton,
-              eventName: 'firstpage',
-              close: true
-            },
-            {
-              element: options.lastPageButton,
-              eventName: 'lastpage',
-              close: true
-            },
-            {
-              element: options.pageRotateCwButton,
-              eventName: 'rotatecw',
-              close: false
-            },
-            {
-              element: options.pageRotateCcwButton,
-              eventName: 'rotateccw',
-              close: false
-            },
-            {
-              element: options.toggleHandToolButton,
-              eventName: 'togglehandtool',
-              close: true
-            },
-            {
-              element: options.documentPropertiesButton,
-              eventName: 'documentproperties',
-              close: true
-            }
-          ];
-          this.mainContainer = mainContainer;
-          this.eventBus = eventBus;
-          this.opened = false;
-          this.containerHeight = null;
-          this.previousContainerHeight = null;
-          // Bind the event listeners for click and hand tool actions.
-          this._bindClickListeners();
-          this._bindHandToolListener(options.toggleHandToolButton);
-          // Bind the event listener for adjusting the 'max-height' of the toolbar.
-          this.eventBus.on('resize', this._setMaxHeight.bind(this));
-        }
-        SecondaryToolbar.prototype = {
-          /**
-           * @return {boolean}
-           */
-          get isOpen() {
-            return this.opened;
-          },
-          _bindClickListeners: function SecondaryToolbar_bindClickListeners() {
-            // Button to toggle the visibility of the secondary toolbar.
-            this.toggleButton.addEventListener('click', this.toggle.bind(this));
-            // All items within the secondary toolbar.
-            for (var button in this.buttons) {
-              var element = this.buttons[button].element;
-              var eventName = this.buttons[button].eventName;
-              var close = this.buttons[button].close;
-              element.addEventListener('click', function (eventName, close) {
-                if (eventName !== null) {
-                  this.eventBus.dispatch(eventName, { source: this });
-                }
-                if (close) {
-                  this.close();
-                }
-              }.bind(this, eventName, close));
-            }
-          },
-          _bindHandToolListener: function SecondaryToolbar_bindHandToolListener(toggleHandToolButton) {
-            var isHandToolActive = false;
-            this.eventBus.on('handtoolchanged', function (e) {
-              if (isHandToolActive === e.isActive) {
-                return;
-              }
-              isHandToolActive = e.isActive;
-              if (isHandToolActive) {
-                toggleHandToolButton.title = mozL10n.get('hand_tool_disable.title', null, 'Disable hand tool');
-                toggleHandToolButton.firstElementChild.textContent = mozL10n.get('hand_tool_disable_label', null, 'Disable hand tool');
-              } else {
-                toggleHandToolButton.title = mozL10n.get('hand_tool_enable.title', null, 'Enable hand tool');
-                toggleHandToolButton.firstElementChild.textContent = mozL10n.get('hand_tool_enable_label', null, 'Enable hand tool');
-              }
-            }.bind(this));
-          },
-          open: function SecondaryToolbar_open() {
-            if (this.opened) {
-              return;
-            }
-            this.opened = true;
-            this._setMaxHeight();
-            this.toggleButton.classList.add('toggled');
-            this.toolbar.classList.remove('hidden');
-          },
-          close: function SecondaryToolbar_close() {
-            if (!this.opened) {
-              return;
-            }
-            this.opened = false;
-            this.toolbar.classList.add('hidden');
-            this.toggleButton.classList.remove('toggled');
-          },
-          toggle: function SecondaryToolbar_toggle() {
-            if (this.opened) {
-              this.close();
-            } else {
-              this.open();
-            }
-          },
-          /**
-           * @private
-           */
-          _setMaxHeight: function SecondaryToolbar_setMaxHeight() {
-            if (!this.opened) {
-              return;
-            }
-            // Only adjust the 'max-height' if the toolbar is visible.
-            this.containerHeight = this.mainContainer.clientHeight;
-            if (this.containerHeight === this.previousContainerHeight) {
-              return;
-            }
-            this.toolbarButtonContainer.setAttribute('style', 'max-height: ' + (this.containerHeight - SCROLLBAR_PADDING) + 'px;');
-            this.previousContainerHeight = this.containerHeight;
-          }
-        };
-        return SecondaryToolbar;
-      }();
-      exports.SecondaryToolbar = SecondaryToolbar;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebPDFFindBar = {}, root.pdfjsWebUIUtils, root.pdfjsWebPDFFindController);
-    }(this, function (exports, uiUtils, pdfFindController) {
-      var mozL10n = uiUtils.mozL10n;
-      var FindStates = pdfFindController.FindStates;
-      /**
-       * Creates a "search bar" given a set of DOM elements that act as controls
-       * for searching or for setting search preferences in the UI. This object
-       * also sets up the appropriate events for the controls. Actual searching
-       * is done by PDFFindController.
-       */
-      var PDFFindBar = function PDFFindBarClosure() {
-        function PDFFindBar(options) {
-          this.opened = false;
-          this.bar = options.bar || null;
-          this.toggleButton = options.toggleButton || null;
-          this.findField = options.findField || null;
-          this.highlightAll = options.highlightAllCheckbox || null;
-          this.caseSensitive = options.caseSensitiveCheckbox || null;
-          this.findMsg = options.findMsg || null;
-          this.findResultsCount = options.findResultsCount || null;
-          this.findStatusIcon = options.findStatusIcon || null;
-          this.findPreviousButton = options.findPreviousButton || null;
-          this.findNextButton = options.findNextButton || null;
-          this.findController = options.findController || null;
-          this.eventBus = options.eventBus;
-          if (this.findController === null) {
-            throw new Error('PDFFindBar cannot be used without a ' + 'PDFFindController instance.');
-          }
-          // Add event listeners to the DOM elements.
-          var self = this;
-          this.toggleButton.addEventListener('click', function () {
-            self.toggle();
-          });
-          this.findField.addEventListener('input', function () {
-            self.dispatchEvent('');
-          });
-          this.bar.addEventListener('keydown', function (evt) {
-            switch (evt.keyCode) {
-            case 13:
-              // Enter
-              if (evt.target === self.findField) {
-                self.dispatchEvent('again', evt.shiftKey);
-              }
-              break;
-            case 27:
-              // Escape
-              self.close();
-              break;
-            }
-          });
-          this.findPreviousButton.addEventListener('click', function () {
-            self.dispatchEvent('again', true);
-          });
-          this.findNextButton.addEventListener('click', function () {
-            self.dispatchEvent('again', false);
-          });
-          this.highlightAll.addEventListener('click', function () {
-            self.dispatchEvent('highlightallchange');
-          });
-          this.caseSensitive.addEventListener('click', function () {
-            self.dispatchEvent('casesensitivitychange');
-          });
-        }
-        PDFFindBar.prototype = {
-          reset: function PDFFindBar_reset() {
-            this.updateUIState();
-          },
-          dispatchEvent: function PDFFindBar_dispatchEvent(type, findPrev) {
-            this.eventBus.dispatch('find', {
-              source: this,
-              type: type,
-              query: this.findField.value,
-              caseSensitive: this.caseSensitive.checked,
-              phraseSearch: true,
-              highlightAll: this.highlightAll.checked,
-              findPrevious: findPrev
-            });
-          },
-          updateUIState: function PDFFindBar_updateUIState(state, previous, matchCount) {
-            var notFound = false;
-            var findMsg = '';
-            var status = '';
-            switch (state) {
-            case FindStates.FIND_FOUND:
-              break;
-            case FindStates.FIND_PENDING:
-              status = 'pending';
-              break;
-            case FindStates.FIND_NOTFOUND:
-              findMsg = mozL10n.get('find_not_found', null, 'Phrase not found');
-              notFound = true;
-              break;
-            case FindStates.FIND_WRAPPED:
-              if (previous) {
-                findMsg = mozL10n.get('find_reached_top', null, 'Reached top of document, continued from bottom');
-              } else {
-                findMsg = mozL10n.get('find_reached_bottom', null, 'Reached end of document, continued from top');
-              }
-              break;
-            }
-            if (notFound) {
-              this.findField.classList.add('notFound');
-            } else {
-              this.findField.classList.remove('notFound');
-            }
-            this.findField.setAttribute('data-status', status);
-            this.findMsg.textContent = findMsg;
-            this.updateResultsCount(matchCount);
-          },
-          updateResultsCount: function (matchCount) {
-            if (!this.findResultsCount) {
-              return;
-            }
-            // no UI control is provided
-            // If there are no matches, hide the counter
-            if (!matchCount) {
-              this.findResultsCount.classList.add('hidden');
-              return;
-            }
-            // Create the match counter
-            this.findResultsCount.textContent = matchCount.toLocaleString();
-            // Show the counter
-            this.findResultsCount.classList.remove('hidden');
-          },
-          open: function PDFFindBar_open() {
-            if (!this.opened) {
-              this.opened = true;
-              this.toggleButton.classList.add('toggled');
-              this.bar.classList.remove('hidden');
-            }
-            this.findField.select();
-            this.findField.focus();
-          },
-          close: function PDFFindBar_close() {
-            if (!this.opened) {
-              return;
-            }
-            this.opened = false;
-            this.toggleButton.classList.remove('toggled');
-            this.bar.classList.add('hidden');
-            this.findController.active = false;
-          },
-          toggle: function PDFFindBar_toggle() {
-            if (this.opened) {
-              this.close();
-            } else {
-              this.open();
-            }
-          }
-        };
-        return PDFFindBar;
-      }();
-      exports.PDFFindBar = PDFFindBar;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebPDFHistory = {}, root.pdfjsWebDOMEvents);
-    }(this, function (exports, domEvents) {
-      function PDFHistory(options) {
-        this.linkService = options.linkService;
-        this.eventBus = options.eventBus || domEvents.getGlobalEventBus();
-        this.initialized = false;
-        this.initialDestination = null;
-        this.initialBookmark = null;
-      }
-      PDFHistory.prototype = {
-        /**
-         * @param {string} fingerprint
-         */
-        initialize: function pdfHistoryInitialize(fingerprint) {
-          this.initialized = true;
-          this.reInitialized = false;
-          this.allowHashChange = true;
-          this.historyUnlocked = true;
-          this.isViewerInPresentationMode = false;
-          this.previousHash = window.location.hash.substring(1);
-          this.currentBookmark = '';
-          this.currentPage = 0;
-          this.updatePreviousBookmark = false;
-          this.previousBookmark = '';
-          this.previousPage = 0;
-          this.nextHashParam = '';
-          this.fingerprint = fingerprint;
-          this.currentUid = this.uid = 0;
-          this.current = {};
-          var state = window.history.state;
-          if (this._isStateObjectDefined(state)) {
-            // This corresponds to navigating back to the document
-            // from another page in the browser history.
-            if (state.target.dest) {
-              this.initialDestination = state.target.dest;
-            } else {
-              this.initialBookmark = state.target.hash;
-            }
-            this.currentUid = state.uid;
-            this.uid = state.uid + 1;
-            this.current = state.target;
-          } else {
-            // This corresponds to the loading of a new document.
-            if (state && state.fingerprint && this.fingerprint !== state.fingerprint) {
-              // Reinitialize the browsing history when a new document
-              // is opened in the web viewer.
-              this.reInitialized = true;
-            }
-            this._pushOrReplaceState({ fingerprint: this.fingerprint }, true);
-          }
-          var self = this;
-          window.addEventListener('popstate', function pdfHistoryPopstate(evt) {
-            if (!self.historyUnlocked) {
-              return;
-            }
-            if (evt.state) {
-              // Move back/forward in the history.
-              self._goTo(evt.state);
-              return;
-            }
-            // If the state is not set, then the user tried to navigate to a
-            // different hash by manually editing the URL and pressing Enter, or by
-            // clicking on an in-page link (e.g. the "current view" link).
-            // Save the current view state to the browser history.
-            // Note: In Firefox, history.null could also be null after an in-page
-            // navigation to the same URL, and without dispatching the popstate
-            // event: https://bugzilla.mozilla.org/show_bug.cgi?id=1183881
-            if (self.uid === 0) {
-              // Replace the previous state if it was not explicitly set.
-              var previousParams = self.previousHash && self.currentBookmark && self.previousHash !== self.currentBookmark ? {
-                hash: self.currentBookmark,
-                page: self.currentPage
-              } : { page: 1 };
-              replacePreviousHistoryState(previousParams, function () {
-                updateHistoryWithCurrentHash();
-              });
-            } else {
-              updateHistoryWithCurrentHash();
-            }
-          }, false);
-          function updateHistoryWithCurrentHash() {
-            self.previousHash = window.location.hash.slice(1);
-            self._pushToHistory({ hash: self.previousHash }, false, true);
-            self._updatePreviousBookmark();
-          }
-          function replacePreviousHistoryState(params, callback) {
-            // To modify the previous history entry, the following happens:
-            // 1. history.back()
-            // 2. _pushToHistory, which calls history.replaceState( ... )
-            // 3. history.forward()
-            // Because a navigation via the history API does not immediately update
-            // the history state, the popstate event is used for synchronization.
-            self.historyUnlocked = false;
-            // Suppress the hashchange event to avoid side effects caused by
-            // navigating back and forward.
-            self.allowHashChange = false;
-            window.addEventListener('popstate', rewriteHistoryAfterBack);
-            history.back();
-            function rewriteHistoryAfterBack() {
-              window.removeEventListener('popstate', rewriteHistoryAfterBack);
-              window.addEventListener('popstate', rewriteHistoryAfterForward);
-              self._pushToHistory(params, false, true);
-              history.forward();
-            }
-            function rewriteHistoryAfterForward() {
-              window.removeEventListener('popstate', rewriteHistoryAfterForward);
-              self.allowHashChange = true;
-              self.historyUnlocked = true;
-              callback();
-            }
-          }
-          function pdfHistoryBeforeUnload() {
-            var previousParams = self._getPreviousParams(null, true);
-            if (previousParams) {
-              var replacePrevious = !self.current.dest && self.current.hash !== self.previousHash;
-              self._pushToHistory(previousParams, false, replacePrevious);
-              self._updatePreviousBookmark();
-            }
-            // Remove the event listener when navigating away from the document,
-            // since 'beforeunload' prevents Firefox from caching the document.
-            window.removeEventListener('beforeunload', pdfHistoryBeforeUnload, false);
-          }
-          window.addEventListener('beforeunload', pdfHistoryBeforeUnload, false);
-          window.addEventListener('pageshow', function pdfHistoryPageShow(evt) {
-            // If the entire viewer (including the PDF file) is cached in
-            // the browser, we need to reattach the 'beforeunload' event listener
-            // since the 'DOMContentLoaded' event is not fired on 'pageshow'.
-            window.addEventListener('beforeunload', pdfHistoryBeforeUnload, false);
-          }, false);
-          self.eventBus.on('presentationmodechanged', function (e) {
-            self.isViewerInPresentationMode = e.active;
-          });
-        },
-        clearHistoryState: function pdfHistory_clearHistoryState() {
-          this._pushOrReplaceState(null, true);
-        },
-        _isStateObjectDefined: function pdfHistory_isStateObjectDefined(state) {
-          return state && state.uid >= 0 && state.fingerprint && this.fingerprint === state.fingerprint && state.target && state.target.hash ? true : false;
-        },
-        _pushOrReplaceState: function pdfHistory_pushOrReplaceState(stateObj, replace) {
-          if (replace) {
-            window.history.replaceState(stateObj, '');
-          } else {
-            window.history.pushState(stateObj, '');
-          }
-        },
-        get isHashChangeUnlocked() {
-          if (!this.initialized) {
-            return true;
-          }
-          return this.allowHashChange;
-        },
-        _updatePreviousBookmark: function pdfHistory_updatePreviousBookmark() {
-          if (this.updatePreviousBookmark && this.currentBookmark && this.currentPage) {
-            this.previousBookmark = this.currentBookmark;
-            this.previousPage = this.currentPage;
-            this.updatePreviousBookmark = false;
-          }
-        },
-        updateCurrentBookmark: function pdfHistoryUpdateCurrentBookmark(bookmark, pageNum) {
-          if (this.initialized) {
-            this.currentBookmark = bookmark.substring(1);
-            this.currentPage = pageNum | 0;
-            this._updatePreviousBookmark();
-          }
-        },
-        updateNextHashParam: function pdfHistoryUpdateNextHashParam(param) {
-          if (this.initialized) {
-            this.nextHashParam = param;
-          }
-        },
-        push: function pdfHistoryPush(params, isInitialBookmark) {
-          if (!(this.initialized && this.historyUnlocked)) {
-            return;
-          }
-          if (params.dest && !params.hash) {
-            params.hash = this.current.hash && this.current.dest && this.current.dest === params.dest ? this.current.hash : this.linkService.getDestinationHash(params.dest).split('#')[1];
-          }
-          if (params.page) {
-            params.page |= 0;
-          }
-          if (isInitialBookmark) {
-            var target = window.history.state.target;
-            if (!target) {
-              // Invoked when the user specifies an initial bookmark,
-              // thus setting initialBookmark, when the document is loaded.
-              this._pushToHistory(params, false);
-              this.previousHash = window.location.hash.substring(1);
-            }
-            this.updatePreviousBookmark = this.nextHashParam ? false : true;
-            if (target) {
-              // If the current document is reloaded,
-              // avoid creating duplicate entries in the history.
-              this._updatePreviousBookmark();
-            }
-            return;
-          }
-          if (this.nextHashParam) {
-            if (this.nextHashParam === params.hash) {
-              this.nextHashParam = null;
-              this.updatePreviousBookmark = true;
-              return;
-            } else {
-              this.nextHashParam = null;
-            }
-          }
-          if (params.hash) {
-            if (this.current.hash) {
-              if (this.current.hash !== params.hash) {
-                this._pushToHistory(params, true);
-              } else {
-                if (!this.current.page && params.page) {
-                  this._pushToHistory(params, false, true);
-                }
-                this.updatePreviousBookmark = true;
-              }
-            } else {
-              this._pushToHistory(params, true);
-            }
-          } else if (this.current.page && params.page && this.current.page !== params.page) {
-            this._pushToHistory(params, true);
-          }
-        },
-        _getPreviousParams: function pdfHistory_getPreviousParams(onlyCheckPage, beforeUnload) {
-          if (!(this.currentBookmark && this.currentPage)) {
-            return null;
-          } else if (this.updatePreviousBookmark) {
-            this.updatePreviousBookmark = false;
-          }
-          if (this.uid > 0 && !(this.previousBookmark && this.previousPage)) {
-            // Prevent the history from getting stuck in the current state,
-            // effectively preventing the user from going back/forward in
-            // the history.
-            //
-            // This happens if the current position in the document didn't change
-            // when the history was previously updated. The reasons for this are
-            // either:
-            // 1. The current zoom value is such that the document does not need to,
-            //    or cannot, be scrolled to display the destination.
-            // 2. The previous destination is broken, and doesn't actally point to a
-            //    position within the document.
-            //    (This is either due to a bad PDF generator, or the user making a
-            //     mistake when entering a destination in the hash parameters.)
-            return null;
-          }
-          if (!this.current.dest && !onlyCheckPage || beforeUnload) {
-            if (this.previousBookmark === this.currentBookmark) {
-              return null;
-            }
-          } else if (this.current.page || onlyCheckPage) {
-            if (this.previousPage === this.currentPage) {
-              return null;
-            }
-          } else {
-            return null;
-          }
-          var params = {
-            hash: this.currentBookmark,
-            page: this.currentPage
-          };
-          if (this.isViewerInPresentationMode) {
-            params.hash = null;
-          }
-          return params;
-        },
-        _stateObj: function pdfHistory_stateObj(params) {
-          return {
-            fingerprint: this.fingerprint,
-            uid: this.uid,
-            target: params
-          };
-        },
-        _pushToHistory: function pdfHistory_pushToHistory(params, addPrevious, overwrite) {
-          if (!this.initialized) {
-            return;
-          }
-          if (!params.hash && params.page) {
-            params.hash = 'page=' + params.page;
-          }
-          if (addPrevious && !overwrite) {
-            var previousParams = this._getPreviousParams();
-            if (previousParams) {
-              var replacePrevious = !this.current.dest && this.current.hash !== this.previousHash;
-              this._pushToHistory(previousParams, false, replacePrevious);
-            }
-          }
-          this._pushOrReplaceState(this._stateObj(params), overwrite || this.uid === 0);
-          this.currentUid = this.uid++;
-          this.current = params;
-          this.updatePreviousBookmark = true;
-        },
-        _goTo: function pdfHistory_goTo(state) {
-          if (!(this.initialized && this.historyUnlocked && this._isStateObjectDefined(state))) {
-            return;
-          }
-          if (!this.reInitialized && state.uid < this.currentUid) {
-            var previousParams = this._getPreviousParams(true);
-            if (previousParams) {
-              this._pushToHistory(this.current, false);
-              this._pushToHistory(previousParams, false);
-              this.currentUid = state.uid;
-              window.history.back();
-              return;
-            }
-          }
-          this.historyUnlocked = false;
-          if (state.target.dest) {
-            this.linkService.navigateTo(state.target.dest);
-          } else {
-            this.linkService.setHash(state.target.hash);
-          }
-          this.currentUid = state.uid;
-          if (state.uid > this.uid) {
-            this.uid = state.uid;
-          }
-          this.current = state.target;
-          this.updatePreviousBookmark = true;
-          var currentHash = window.location.hash.substring(1);
-          if (this.previousHash !== currentHash) {
-            this.allowHashChange = false;
-          }
-          this.previousHash = currentHash;
-          this.historyUnlocked = true;
-        },
-        back: function pdfHistoryBack() {
-          this.go(-1);
-        },
-        forward: function pdfHistoryForward() {
-          this.go(1);
-        },
-        go: function pdfHistoryGo(direction) {
-          if (this.initialized && this.historyUnlocked) {
-            var state = window.history.state;
-            if (direction === -1 && state && state.uid > 0) {
-              window.history.back();
-            } else if (direction === 1 && state && state.uid < this.uid - 1) {
-              window.history.forward();
-            }
-          }
-        }
-      };
-      exports.PDFHistory = PDFHistory;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebPDFLinkService = {}, root.pdfjsWebUIUtils, root.pdfjsWebDOMEvents);
-    }(this, function (exports, uiUtils, domEvents) {
-      var parseQueryString = uiUtils.parseQueryString;
-      var PageNumberRegExp = /^\d+$/;
-      function isPageNumber(str) {
-        return PageNumberRegExp.test(str);
-      }
-      /**
-       * @typedef {Object} PDFLinkServiceOptions
-       * @property {EventBus} eventBus - The application event bus.
-       */
-      /**
-       * Performs navigation functions inside PDF, such as opening specified page,
-       * or destination.
-       * @class
-       * @implements {IPDFLinkService}
-       */
-      var PDFLinkService = function PDFLinkServiceClosure() {
-        /**
-         * @constructs PDFLinkService
-         * @param {PDFLinkServiceOptions} options
-         */
-        function PDFLinkService(options) {
-          options = options || {};
-          this.eventBus = options.eventBus || domEvents.getGlobalEventBus();
-          this.baseUrl = null;
-          this.pdfDocument = null;
-          this.pdfViewer = null;
-          this.pdfHistory = null;
-          this._pagesRefCache = null;
-        }
-        PDFLinkService.prototype = {
-          setDocument: function PDFLinkService_setDocument(pdfDocument, baseUrl) {
-            this.baseUrl = baseUrl;
-            this.pdfDocument = pdfDocument;
-            this._pagesRefCache = Object.create(null);
-          },
-          setViewer: function PDFLinkService_setViewer(pdfViewer) {
-            this.pdfViewer = pdfViewer;
-          },
-          setHistory: function PDFLinkService_setHistory(pdfHistory) {
-            this.pdfHistory = pdfHistory;
-          },
-          /**
-           * @returns {number}
-           */
-          get pagesCount() {
-            return this.pdfDocument ? this.pdfDocument.numPages : 0;
-          },
-          /**
-           * @returns {number}
-           */
-          get page() {
-            return this.pdfViewer.currentPageNumber;
-          },
-          /**
-           * @param {number} value
-           */
-          set page(value) {
-            this.pdfViewer.currentPageNumber = value;
-          },
-          /**
-           * @param dest - The PDF destination object.
-           */
-          navigateTo: function PDFLinkService_navigateTo(dest) {
-            var destString = '';
-            var self = this;
-            var goToDestination = function (destRef) {
-              // dest array looks like that: <page-ref> </XYZ|/FitXXX> <args..>
-              var pageNumber;
-              if (destRef instanceof Object) {
-                pageNumber = self._cachedPageNumber(destRef);
-              } else if ((destRef | 0) === destRef) {
-                // Integer
-                pageNumber = destRef + 1;
-              } else {
-                console.error('PDFLinkService_navigateTo: "' + destRef + '" is not a valid destination reference.');
-                return;
-              }
-              if (pageNumber) {
-                if (pageNumber < 1 || pageNumber > self.pagesCount) {
-                  console.error('PDFLinkService_navigateTo: "' + pageNumber + '" is a non-existent page number.');
-                  return;
-                }
-                self.pdfViewer.scrollPageIntoView({
-                  pageNumber: pageNumber,
-                  destArray: dest
-                });
-                if (self.pdfHistory) {
-                  // Update the browsing history.
-                  self.pdfHistory.push({
-                    dest: dest,
-                    hash: destString,
-                    page: pageNumber
-                  });
-                }
-              } else {
-                self.pdfDocument.getPageIndex(destRef).then(function (pageIndex) {
-                  self.cachePageRef(pageIndex + 1, destRef);
-                  goToDestination(destRef);
-                }).catch(function () {
-                  console.error('PDFLinkService_navigateTo: "' + destRef + '" is not a valid page reference.');
-                  return;
-                });
-              }
-            };
-            var destinationPromise;
-            if (typeof dest === 'string') {
-              destString = dest;
-              destinationPromise = this.pdfDocument.getDestination(dest);
-            } else {
-              destinationPromise = Promise.resolve(dest);
-            }
-            destinationPromise.then(function (destination) {
-              dest = destination;
-              if (!(destination instanceof Array)) {
-                console.error('PDFLinkService_navigateTo: "' + destination + '" is not a valid destination array.');
-                return;
-              }
-              goToDestination(destination[0]);
-            });
-          },
-          /**
-           * @param dest - The PDF destination object.
-           * @returns {string} The hyperlink to the PDF object.
-           */
-          getDestinationHash: function PDFLinkService_getDestinationHash(dest) {
-            if (typeof dest === 'string') {
-              // In practice, a named destination may contain only a number.
-              // If that happens, use the '#nameddest=' form to avoid the link
-              // redirecting to a page, instead of the correct destination.
-              return this.getAnchorUrl('#' + (isPageNumber(dest) ? 'nameddest=' : '') + escape(dest));
-            }
-            if (dest instanceof Array) {
-              var str = JSON.stringify(dest);
-              return this.getAnchorUrl('#' + escape(str));
-            }
-            return this.getAnchorUrl('');
-          },
-          /**
-           * Prefix the full url on anchor links to make sure that links are resolved
-           * relative to the current URL instead of the one defined in <base href>.
-           * @param {String} anchor The anchor hash, including the #.
-           * @returns {string} The hyperlink to the PDF object.
-           */
-          getAnchorUrl: function PDFLinkService_getAnchorUrl(anchor) {
-            return (this.baseUrl || '') + anchor;
-          },
-          /**
-           * @param {string} hash
-           */
-          setHash: function PDFLinkService_setHash(hash) {
-            var pageNumber, dest;
-            if (hash.indexOf('=') >= 0) {
-              var params = parseQueryString(hash);
-              if ('search' in params) {
-                this.eventBus.dispatch('findfromurlhash', {
-                  source: this,
-                  query: params['search'].replace(/"/g, ''),
-                  phraseSearch: params['phrase'] === 'true'
-                });
-              }
-              // borrowing syntax from "Parameters for Opening PDF Files"
-              if ('nameddest' in params) {
-                if (this.pdfHistory) {
-                  this.pdfHistory.updateNextHashParam(params.nameddest);
-                }
-                this.navigateTo(params.nameddest);
-                return;
-              }
-              if ('page' in params) {
-                pageNumber = params.page | 0 || 1;
-              }
-              if ('zoom' in params) {
-                // Build the destination array.
-                var zoomArgs = params.zoom.split(',');
-                // scale,left,top
-                var zoomArg = zoomArgs[0];
-                var zoomArgNumber = parseFloat(zoomArg);
-                if (zoomArg.indexOf('Fit') === -1) {
-                  // If the zoomArg is a number, it has to get divided by 100. If it's
-                  // a string, it should stay as it is.
-                  dest = [
-                    null,
-                    { name: 'XYZ' },
-                    zoomArgs.length > 1 ? zoomArgs[1] | 0 : null,
-                    zoomArgs.length > 2 ? zoomArgs[2] | 0 : null,
-                    zoomArgNumber ? zoomArgNumber / 100 : zoomArg
-                  ];
-                } else {
-                  if (zoomArg === 'Fit' || zoomArg === 'FitB') {
-                    dest = [
-                      null,
-                      { name: zoomArg }
-                    ];
-                  } else if (zoomArg === 'FitH' || zoomArg === 'FitBH' || (zoomArg === 'FitV' || zoomArg === 'FitBV')) {
-                    dest = [
-                      null,
-                      { name: zoomArg },
-                      zoomArgs.length > 1 ? zoomArgs[1] | 0 : null
-                    ];
-                  } else if (zoomArg === 'FitR') {
-                    if (zoomArgs.length !== 5) {
-                      console.error('PDFLinkService_setHash: ' + 'Not enough parameters for \'FitR\'.');
-                    } else {
-                      dest = [
-                        null,
-                        { name: zoomArg },
-                        zoomArgs[1] | 0,
-                        zoomArgs[2] | 0,
-                        zoomArgs[3] | 0,
-                        zoomArgs[4] | 0
-                      ];
-                    }
-                  } else {
-                    console.error('PDFLinkService_setHash: \'' + zoomArg + '\' is not a valid zoom value.');
-                  }
-                }
-              }
-              if (dest) {
-                this.pdfViewer.scrollPageIntoView({
-                  pageNumber: pageNumber || this.page,
-                  destArray: dest,
-                  allowNegativeOffset: true
-                });
-              } else if (pageNumber) {
-                this.page = pageNumber;
-              }
-              // simple page
-              if ('pagemode' in params) {
-                this.eventBus.dispatch('pagemode', {
-                  source: this,
-                  mode: params.pagemode
-                });
-              }
-            } else {
-              dest = unescape(hash);
-              try {
-                dest = JSON.parse(dest);
-                if (!(dest instanceof Array)) {
-                  // Avoid incorrectly rejecting a valid named destination, such as
-                  // e.g. "4.3" or "true", because `JSON.parse` converted its type.
-                  dest = dest.toString();
-                }
-              } catch (ex) {
-              }
-              if (typeof dest === 'string' || isValidExplicitDestination(dest)) {
-                if (this.pdfHistory) {
-                  this.pdfHistory.updateNextHashParam(dest);
-                }
-                this.navigateTo(dest);
-                return;
-              }
-              console.error('PDFLinkService_setHash: \'' + unescape(hash) + '\' is not a valid destination.');
-            }
-          },
-          /**
-           * @param {string} action
-           */
-          executeNamedAction: function PDFLinkService_executeNamedAction(action) {
-            // See PDF reference, table 8.45 - Named action
-            switch (action) {
-            case 'GoBack':
-              if (this.pdfHistory) {
-                this.pdfHistory.back();
-              }
-              break;
-            case 'GoForward':
-              if (this.pdfHistory) {
-                this.pdfHistory.forward();
-              }
-              break;
-            case 'NextPage':
-              if (this.page < this.pagesCount) {
-                this.page++;
-              }
-              break;
-            case 'PrevPage':
-              if (this.page > 1) {
-                this.page--;
-              }
-              break;
-            case 'LastPage':
-              this.page = this.pagesCount;
-              break;
-            case 'FirstPage':
-              this.page = 1;
-              break;
-            default:
-              break;
-            }
-            // No action according to spec
-            this.eventBus.dispatch('namedaction', {
-              source: this,
-              action: action
-            });
-          },
-          /**
-           * @param {number} pageNum - page number.
-           * @param {Object} pageRef - reference to the page.
-           */
-          cachePageRef: function PDFLinkService_cachePageRef(pageNum, pageRef) {
-            var refStr = pageRef.num + ' ' + pageRef.gen + ' R';
-            this._pagesRefCache[refStr] = pageNum;
-          },
-          _cachedPageNumber: function PDFLinkService_cachedPageNumber(pageRef) {
-            var refStr = pageRef.num + ' ' + pageRef.gen + ' R';
-            return this._pagesRefCache && this._pagesRefCache[refStr] || null;
-          }
-        };
-        function isValidExplicitDestination(dest) {
-          if (!(dest instanceof Array)) {
-            return false;
-          }
-          var destLength = dest.length, allowNull = true;
-          if (destLength < 2) {
-            return false;
-          }
-          var page = dest[0];
-          if (!(typeof page === 'object' && typeof page.num === 'number' && (page.num | 0) === page.num && typeof page.gen === 'number' && (page.gen | 0) === page.gen) && !(typeof page === 'number' && (page | 0) === page && page >= 0)) {
-            return false;
-          }
-          var zoom = dest[1];
-          if (!(typeof zoom === 'object' && typeof zoom.name === 'string')) {
-            return false;
-          }
-          switch (zoom.name) {
-          case 'XYZ':
-            if (destLength !== 5) {
-              return false;
-            }
-            break;
-          case 'Fit':
-          case 'FitB':
-            return destLength === 2;
-          case 'FitH':
-          case 'FitBH':
-          case 'FitV':
-          case 'FitBV':
-            if (destLength !== 3) {
-              return false;
-            }
-            break;
-          case 'FitR':
-            if (destLength !== 6) {
-              return false;
-            }
-            allowNull = false;
-            break;
-          default:
-            return false;
-          }
-          for (var i = 2; i < destLength; i++) {
-            var param = dest[i];
-            if (!(typeof param === 'number' || allowNull && param === null)) {
-              return false;
-            }
-          }
-          return true;
-        }
-        return PDFLinkService;
-      }();
-      var SimpleLinkService = function SimpleLinkServiceClosure() {
-        function SimpleLinkService() {
-        }
-        SimpleLinkService.prototype = {
-          /**
-           * @returns {number}
-           */
-          get page() {
-            return 0;
-          },
-          /**
-           * @param {number} value
-           */
-          set page(value) {
-          },
-          /**
-           * @param dest - The PDF destination object.
-           */
-          navigateTo: function (dest) {
-          },
-          /**
-           * @param dest - The PDF destination object.
-           * @returns {string} The hyperlink to the PDF object.
-           */
-          getDestinationHash: function (dest) {
-            return '#';
-          },
-          /**
-           * @param hash - The PDF parameters/hash.
-           * @returns {string} The hyperlink to the PDF object.
-           */
-          getAnchorUrl: function (hash) {
-            return '#';
-          },
-          /**
-           * @param {string} hash
-           */
-          setHash: function (hash) {
-          },
-          /**
-           * @param {string} action
-           */
-          executeNamedAction: function (action) {
-          },
-          /**
-           * @param {number} pageNum - page number.
-           * @param {Object} pageRef - reference to the page.
-           */
-          cachePageRef: function (pageNum, pageRef) {
-          }
-        };
-        return SimpleLinkService;
-      }();
-      exports.PDFLinkService = PDFLinkService;
-      exports.SimpleLinkService = SimpleLinkService;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebPDFPageView = {}, root.pdfjsWebUIUtils, root.pdfjsWebPDFRenderingQueue, root.pdfjsWebDOMEvents, root.pdfjsWebPDFJS);
-    }(this, function (exports, uiUtils, pdfRenderingQueue, domEvents, pdfjsLib) {
-      var CSS_UNITS = uiUtils.CSS_UNITS;
-      var DEFAULT_SCALE = uiUtils.DEFAULT_SCALE;
-      var getOutputScale = uiUtils.getOutputScale;
-      var approximateFraction = uiUtils.approximateFraction;
-      var roundToDivide = uiUtils.roundToDivide;
-      var RenderingStates = pdfRenderingQueue.RenderingStates;
-      var TEXT_LAYER_RENDER_DELAY = 200;
-      // ms
-      /**
-       * @typedef {Object} PDFPageViewOptions
-       * @property {HTMLDivElement} container - The viewer element.
-       * @property {EventBus} eventBus - The application event bus.
-       * @property {number} id - The page unique ID (normally its number).
-       * @property {number} scale - The page scale display.
-       * @property {PageViewport} defaultViewport - The page viewport.
-       * @property {PDFRenderingQueue} renderingQueue - The rendering queue object.
-       * @property {IPDFTextLayerFactory} textLayerFactory
-       * @property {IPDFAnnotationLayerFactory} annotationLayerFactory
-       * @property {boolean} enhanceTextSelection - Turns on the text selection
-       *   enhancement. The default is `false`.
-       * @property {boolean} renderInteractiveForms - Turns on rendering of
-       *   interactive form elements. The default is `false`.
-       */
-      /**
-       * @class
-       * @implements {IRenderableView}
-       */
-      var PDFPageView = function PDFPageViewClosure() {
-        /**
-         * @constructs PDFPageView
-         * @param {PDFPageViewOptions} options
-         */
-        function PDFPageView(options) {
-          var container = options.container;
-          var id = options.id;
-          var scale = options.scale;
-          var defaultViewport = options.defaultViewport;
-          var renderingQueue = options.renderingQueue;
-          var textLayerFactory = options.textLayerFactory;
-          var annotationLayerFactory = options.annotationLayerFactory;
-          var enhanceTextSelection = options.enhanceTextSelection || false;
-          var renderInteractiveForms = options.renderInteractiveForms || false;
-          this.id = id;
-          this.renderingId = 'page' + id;
-          this.pageLabel = null;
-          this.rotation = 0;
-          this.scale = scale || DEFAULT_SCALE;
-          this.viewport = defaultViewport;
-          this.pdfPageRotate = defaultViewport.rotation;
-          this.hasRestrictedScaling = false;
-          this.enhanceTextSelection = enhanceTextSelection;
-          this.renderInteractiveForms = renderInteractiveForms;
-          this.eventBus = options.eventBus || domEvents.getGlobalEventBus();
-          this.renderingQueue = renderingQueue;
-          this.textLayerFactory = textLayerFactory;
-          this.annotationLayerFactory = annotationLayerFactory;
-          this.renderTask = null;
-          this.renderingState = RenderingStates.INITIAL;
-          this.resume = null;
-          this.onBeforeDraw = null;
-          this.onAfterDraw = null;
-          this.textLayer = null;
-          this.zoomLayer = null;
-          this.annotationLayer = null;
-          var div = document.createElement('div');
-          div.id = 'pageContainer' + this.id;
-          div.className = 'page';
-          div.style.width = Math.floor(this.viewport.width) + 'px';
-          div.style.height = Math.floor(this.viewport.height) + 'px';
-          div.setAttribute('data-page-number', this.id);
-          this.div = div;
-          container.appendChild(div);
-        }
-        PDFPageView.prototype = {
-          setPdfPage: function PDFPageView_setPdfPage(pdfPage) {
-            this.pdfPage = pdfPage;
-            this.pdfPageRotate = pdfPage.rotate;
-            var totalRotation = (this.rotation + this.pdfPageRotate) % 360;
-            this.viewport = pdfPage.getViewport(this.scale * CSS_UNITS, totalRotation);
-            this.stats = pdfPage.stats;
-            this.reset();
-          },
-          destroy: function PDFPageView_destroy() {
-            this.zoomLayer = null;
-            this.reset();
-            if (this.pdfPage) {
-              this.pdfPage.cleanup();
-            }
-          },
-          reset: function PDFPageView_reset(keepZoomLayer, keepAnnotations) {
-            this.cancelRendering();
-            var div = this.div;
-            div.style.width = Math.floor(this.viewport.width) + 'px';
-            div.style.height = Math.floor(this.viewport.height) + 'px';
-            var childNodes = div.childNodes;
-            var currentZoomLayerNode = keepZoomLayer && this.zoomLayer || null;
-            var currentAnnotationNode = keepAnnotations && this.annotationLayer && this.annotationLayer.div || null;
-            for (var i = childNodes.length - 1; i >= 0; i--) {
-              var node = childNodes[i];
-              if (currentZoomLayerNode === node || currentAnnotationNode === node) {
-                continue;
-              }
-              div.removeChild(node);
-            }
-            div.removeAttribute('data-loaded');
-            if (currentAnnotationNode) {
-              // Hide annotationLayer until all elements are resized
-              // so they are not displayed on the already-resized page
-              this.annotationLayer.hide();
-            } else {
-              this.annotationLayer = null;
-            }
-            if (this.canvas && !currentZoomLayerNode) {
-              // Zeroing the width and height causes Firefox to release graphics
-              // resources immediately, which can greatly reduce memory consumption.
-              this.canvas.width = 0;
-              this.canvas.height = 0;
-              delete this.canvas;
-            }
-            this.loadingIconDiv = document.createElement('div');
-            this.loadingIconDiv.className = 'loadingIcon';
-            div.appendChild(this.loadingIconDiv);
-          },
-          update: function PDFPageView_update(scale, rotation) {
-            this.scale = scale || this.scale;
-            if (typeof rotation !== 'undefined') {
-              this.rotation = rotation;
-            }
-            var totalRotation = (this.rotation + this.pdfPageRotate) % 360;
-            this.viewport = this.viewport.clone({
-              scale: this.scale * CSS_UNITS,
-              rotation: totalRotation
-            });
-            var isScalingRestricted = false;
-            if (this.canvas && pdfjsLib.PDFJS.maxCanvasPixels > 0) {
-              var outputScale = this.outputScale;
-              if ((Math.floor(this.viewport.width) * outputScale.sx | 0) * (Math.floor(this.viewport.height) * outputScale.sy | 0) > pdfjsLib.PDFJS.maxCanvasPixels) {
-                isScalingRestricted = true;
-              }
-            }
-            if (this.canvas) {
-              if (pdfjsLib.PDFJS.useOnlyCssZoom || this.hasRestrictedScaling && isScalingRestricted) {
-                this.cssTransform(this.canvas, true);
-                this.eventBus.dispatch('pagerendered', {
-                  source: this,
-                  pageNumber: this.id,
-                  cssTransform: true
-                });
-                return;
-              }
-              if (!this.zoomLayer) {
-                this.zoomLayer = this.canvas.parentNode;
-                this.zoomLayer.style.position = 'absolute';
-              }
-            }
-            if (this.zoomLayer) {
-              this.cssTransform(this.zoomLayer.firstChild);
-            }
-            this.reset(/* keepZoomLayer = */
-            true, /* keepAnnotations = */
-            true);
-          },
-          cancelRendering: function PDFPageView_cancelRendering() {
-            if (this.renderTask) {
-              this.renderTask.cancel();
-              this.renderTask = null;
-            }
-            this.renderingState = RenderingStates.INITIAL;
-            this.resume = null;
-            if (this.textLayer) {
-              this.textLayer.cancel();
-              this.textLayer = null;
-            }
-          },
-          /**
-           * Called when moved in the parent's container.
-           */
-          updatePosition: function PDFPageView_updatePosition() {
-            if (this.textLayer) {
-              this.textLayer.render(TEXT_LAYER_RENDER_DELAY);
-            }
-          },
-          cssTransform: function PDFPageView_transform(canvas, redrawAnnotations) {
-            var CustomStyle = pdfjsLib.CustomStyle;
-            // Scale canvas, canvas wrapper, and page container.
-            var width = this.viewport.width;
-            var height = this.viewport.height;
-            var div = this.div;
-            canvas.style.width = canvas.parentNode.style.width = div.style.width = Math.floor(width) + 'px';
-            canvas.style.height = canvas.parentNode.style.height = div.style.height = Math.floor(height) + 'px';
-            // The canvas may have been originally rotated, rotate relative to that.
-            var relativeRotation = this.viewport.rotation - canvas._viewport.rotation;
-            var absRotation = Math.abs(relativeRotation);
-            var scaleX = 1, scaleY = 1;
-            if (absRotation === 90 || absRotation === 270) {
-              // Scale x and y because of the rotation.
-              scaleX = height / width;
-              scaleY = width / height;
-            }
-            var cssTransform = 'rotate(' + relativeRotation + 'deg) ' + 'scale(' + scaleX + ',' + scaleY + ')';
-            CustomStyle.setProp('transform', canvas, cssTransform);
-            if (this.textLayer) {
-              // Rotating the text layer is more complicated since the divs inside the
-              // the text layer are rotated.
-              // TODO: This could probably be simplified by drawing the text layer in
-              // one orientation then rotating overall.
-              var textLayerViewport = this.textLayer.viewport;
-              var textRelativeRotation = this.viewport.rotation - textLayerViewport.rotation;
-              var textAbsRotation = Math.abs(textRelativeRotation);
-              var scale = width / textLayerViewport.width;
-              if (textAbsRotation === 90 || textAbsRotation === 270) {
-                scale = width / textLayerViewport.height;
-              }
-              var textLayerDiv = this.textLayer.textLayerDiv;
-              var transX, transY;
-              switch (textAbsRotation) {
-              case 0:
-                transX = transY = 0;
-                break;
-              case 90:
-                transX = 0;
-                transY = '-' + textLayerDiv.style.height;
-                break;
-              case 180:
-                transX = '-' + textLayerDiv.style.width;
-                transY = '-' + textLayerDiv.style.height;
-                break;
-              case 270:
-                transX = '-' + textLayerDiv.style.width;
-                transY = 0;
-                break;
-              default:
-                console.error('Bad rotation value.');
-                break;
-              }
-              CustomStyle.setProp('transform', textLayerDiv, 'rotate(' + textAbsRotation + 'deg) ' + 'scale(' + scale + ', ' + scale + ') ' + 'translate(' + transX + ', ' + transY + ')');
-              CustomStyle.setProp('transformOrigin', textLayerDiv, '0% 0%');
-            }
-            if (redrawAnnotations && this.annotationLayer) {
-              this.annotationLayer.render(this.viewport, 'display');
-            }
-          },
-          get width() {
-            return this.viewport.width;
-          },
-          get height() {
-            return this.viewport.height;
-          },
-          getPagePoint: function PDFPageView_getPagePoint(x, y) {
-            return this.viewport.convertToPdfPoint(x, y);
-          },
-          draw: function PDFPageView_draw() {
-            if (this.renderingState !== RenderingStates.INITIAL) {
-              console.error('Must be in new state before drawing');
-              this.reset();
-            }
-            // Ensure that we reset all state to prevent issues.
-            this.renderingState = RenderingStates.RUNNING;
-            var pdfPage = this.pdfPage;
-            var viewport = this.viewport;
-            var div = this.div;
-            // Wrap the canvas so if it has a css transform for highdpi the overflow
-            // will be hidden in FF.
-            var canvasWrapper = document.createElement('div');
-            canvasWrapper.style.width = div.style.width;
-            canvasWrapper.style.height = div.style.height;
-            canvasWrapper.classList.add('canvasWrapper');
-            var canvas = document.createElement('canvas');
-            canvas.id = 'page' + this.id;
-            // Keep the canvas hidden until the first draw callback, or until drawing
-            // is complete when `!this.renderingQueue`, to prevent black flickering.
-            canvas.setAttribute('hidden', 'hidden');
-            var isCanvasHidden = true;
-            canvasWrapper.appendChild(canvas);
-            if (this.annotationLayer && this.annotationLayer.div) {
-              // annotationLayer needs to stay on top
-              div.insertBefore(canvasWrapper, this.annotationLayer.div);
-            } else {
-              div.appendChild(canvasWrapper);
-            }
-            this.canvas = canvas;
-            canvas.mozOpaque = true;
-            var ctx = canvas.getContext('2d', { alpha: false });
-            var outputScale = getOutputScale(ctx);
-            this.outputScale = outputScale;
-            if (pdfjsLib.PDFJS.useOnlyCssZoom) {
-              var actualSizeViewport = viewport.clone({ scale: CSS_UNITS });
-              // Use a scale that will make the canvas be the original intended size
-              // of the page.
-              outputScale.sx *= actualSizeViewport.width / viewport.width;
-              outputScale.sy *= actualSizeViewport.height / viewport.height;
-              outputScale.scaled = true;
-            }
-            if (pdfjsLib.PDFJS.maxCanvasPixels > 0) {
-              var pixelsInViewport = viewport.width * viewport.height;
-              var maxScale = Math.sqrt(pdfjsLib.PDFJS.maxCanvasPixels / pixelsInViewport);
-              if (outputScale.sx > maxScale || outputScale.sy > maxScale) {
-                outputScale.sx = maxScale;
-                outputScale.sy = maxScale;
-                outputScale.scaled = true;
-                this.hasRestrictedScaling = true;
-              } else {
-                this.hasRestrictedScaling = false;
-              }
-            }
-            var sfx = approximateFraction(outputScale.sx);
-            var sfy = approximateFraction(outputScale.sy);
-            canvas.width = roundToDivide(viewport.width * outputScale.sx, sfx[0]);
-            canvas.height = roundToDivide(viewport.height * outputScale.sy, sfy[0]);
-            canvas.style.width = roundToDivide(viewport.width, sfx[1]) + 'px';
-            canvas.style.height = roundToDivide(viewport.height, sfy[1]) + 'px';
-            // Add the viewport so it's known what it was originally drawn with.
-            canvas._viewport = viewport;
-            var textLayerDiv = null;
-            var textLayer = null;
-            if (this.textLayerFactory) {
-              textLayerDiv = document.createElement('div');
-              textLayerDiv.className = 'textLayer';
-              textLayerDiv.style.width = canvasWrapper.style.width;
-              textLayerDiv.style.height = canvasWrapper.style.height;
-              if (this.annotationLayer && this.annotationLayer.div) {
-                // annotationLayer needs to stay on top
-                div.insertBefore(textLayerDiv, this.annotationLayer.div);
-              } else {
-                div.appendChild(textLayerDiv);
-              }
-              textLayer = this.textLayerFactory.createTextLayerBuilder(textLayerDiv, this.id - 1, this.viewport, this.enhanceTextSelection);
-            }
-            this.textLayer = textLayer;
-            var resolveRenderPromise, rejectRenderPromise;
-            var promise = new Promise(function (resolve, reject) {
-              resolveRenderPromise = resolve;
-              rejectRenderPromise = reject;
-            });
-            // Rendering area
-            var self = this;
-            function pageViewDrawCallback(error) {
-              // The renderTask may have been replaced by a new one, so only remove
-              // the reference to the renderTask if it matches the one that is
-              // triggering this callback.
-              if (renderTask === self.renderTask) {
-                self.renderTask = null;
-              }
-              if (error === 'cancelled') {
-                rejectRenderPromise(error);
-                return;
-              }
-              self.renderingState = RenderingStates.FINISHED;
-              if (isCanvasHidden) {
-                self.canvas.removeAttribute('hidden');
-                isCanvasHidden = false;
-              }
-              if (self.loadingIconDiv) {
-                div.removeChild(self.loadingIconDiv);
-                delete self.loadingIconDiv;
-              }
-              if (self.zoomLayer) {
-                // Zeroing the width and height causes Firefox to release graphics
-                // resources immediately, which can greatly reduce memory consumption.
-                var zoomLayerCanvas = self.zoomLayer.firstChild;
-                zoomLayerCanvas.width = 0;
-                zoomLayerCanvas.height = 0;
-                if (div.contains(self.zoomLayer)) {
-                  // Prevent "Node was not found" errors if the `zoomLayer` was
-                  // already removed. This may occur intermittently if the scale
-                  // changes many times in very quick succession.
-                  div.removeChild(self.zoomLayer);
-                }
-                self.zoomLayer = null;
-              }
-              self.error = error;
-              self.stats = pdfPage.stats;
-              if (self.onAfterDraw) {
-                self.onAfterDraw();
-              }
-              self.eventBus.dispatch('pagerendered', {
-                source: self,
-                pageNumber: self.id,
-                cssTransform: false
-              });
-              if (!error) {
-                resolveRenderPromise(undefined);
-              } else {
-                rejectRenderPromise(error);
-              }
-            }
-            var renderContinueCallback = null;
-            if (this.renderingQueue) {
-              renderContinueCallback = function renderContinueCallback(cont) {
-                if (!self.renderingQueue.isHighestPriority(self)) {
-                  self.renderingState = RenderingStates.PAUSED;
-                  self.resume = function resumeCallback() {
-                    self.renderingState = RenderingStates.RUNNING;
-                    cont();
-                  };
-                  return;
-                }
-                if (isCanvasHidden) {
-                  self.canvas.removeAttribute('hidden');
-                  isCanvasHidden = false;
-                }
-                cont();
-              };
-            }
-            var transform = !outputScale.scaled ? null : [
-              outputScale.sx,
-              0,
-              0,
-              outputScale.sy,
-              0,
-              0
-            ];
-            var renderContext = {
-              canvasContext: ctx,
-              transform: transform,
-              viewport: this.viewport,
-              renderInteractiveForms: this.renderInteractiveForms
-            };
-            // intent: 'default', // === 'display'
-            var renderTask = this.renderTask = this.pdfPage.render(renderContext);
-            renderTask.onContinue = renderContinueCallback;
-            this.renderTask.promise.then(function pdfPageRenderCallback() {
-              pageViewDrawCallback(null);
-              if (textLayer) {
-                self.pdfPage.getTextContent({ normalizeWhitespace: true }).then(function textContentResolved(textContent) {
-                  textLayer.setTextContent(textContent);
-                  textLayer.render(TEXT_LAYER_RENDER_DELAY);
-                });
-              }
-            }, function pdfPageRenderError(error) {
-              pageViewDrawCallback(error);
-            });
-            if (this.annotationLayerFactory) {
-              if (!this.annotationLayer) {
-                this.annotationLayer = this.annotationLayerFactory.createAnnotationLayerBuilder(div, this.pdfPage, this.renderInteractiveForms);
-              }
-              this.annotationLayer.render(this.viewport, 'display');
-            }
-            div.setAttribute('data-loaded', true);
-            if (self.onBeforeDraw) {
-              self.onBeforeDraw();
-            }
-            return promise;
-          },
-          /**
-           * @param {string|null} label
-           */
-          setPageLabel: function PDFView_setPageLabel(label) {
-            this.pageLabel = typeof label === 'string' ? label : null;
-            if (this.pageLabel !== null) {
-              this.div.setAttribute('data-page-label', this.pageLabel);
-            } else {
-              this.div.removeAttribute('data-page-label');
-            }
-          }
-        };
-        return PDFPageView;
-      }();
-      exports.PDFPageView = PDFPageView;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebPDFThumbnailViewer = {}, root.pdfjsWebUIUtils, root.pdfjsWebPDFThumbnailView);
-    }(this, function (exports, uiUtils, pdfThumbnailView) {
-      var watchScroll = uiUtils.watchScroll;
-      var getVisibleElements = uiUtils.getVisibleElements;
-      var scrollIntoView = uiUtils.scrollIntoView;
-      var PDFThumbnailView = pdfThumbnailView.PDFThumbnailView;
-      var THUMBNAIL_SCROLL_MARGIN = -19;
-      /**
-       * @typedef {Object} PDFThumbnailViewerOptions
-       * @property {HTMLDivElement} container - The container for the thumbnail
-       *   elements.
-       * @property {IPDFLinkService} linkService - The navigation/linking service.
-       * @property {PDFRenderingQueue} renderingQueue - The rendering queue object.
-       */
-      /**
-       * Simple viewer control to display thumbnails for pages.
-       * @class
-       * @implements {IRenderableView}
-       */
-      var PDFThumbnailViewer = function PDFThumbnailViewerClosure() {
-        /**
-         * @constructs PDFThumbnailViewer
-         * @param {PDFThumbnailViewerOptions} options
-         */
-        function PDFThumbnailViewer(options) {
-          this.container = options.container;
-          this.renderingQueue = options.renderingQueue;
-          this.linkService = options.linkService;
-          this.scroll = watchScroll(this.container, this._scrollUpdated.bind(this));
-          this._resetView();
-        }
-        PDFThumbnailViewer.prototype = {
-          /**
-           * @private
-           */
-          _scrollUpdated: function PDFThumbnailViewer_scrollUpdated() {
-            this.renderingQueue.renderHighestPriority();
-          },
-          getThumbnail: function PDFThumbnailViewer_getThumbnail(index) {
-            return this.thumbnails[index];
-          },
-          /**
-           * @private
-           */
-          _getVisibleThumbs: function PDFThumbnailViewer_getVisibleThumbs() {
-            return getVisibleElements(this.container, this.thumbnails);
-          },
-          scrollThumbnailIntoView: function PDFThumbnailViewer_scrollThumbnailIntoView(page) {
-            var selected = document.querySelector('.thumbnail.selected');
-            if (selected) {
-              selected.classList.remove('selected');
-            }
-            var thumbnail = document.getElementById('thumbnailContainer' + page);
-            if (thumbnail) {
-              thumbnail.classList.add('selected');
-            }
-            var visibleThumbs = this._getVisibleThumbs();
-            var numVisibleThumbs = visibleThumbs.views.length;
-            // If the thumbnail isn't currently visible, scroll it into view.
-            if (numVisibleThumbs > 0) {
-              var first = visibleThumbs.first.id;
-              // Account for only one thumbnail being visible.
-              var last = numVisibleThumbs > 1 ? visibleThumbs.last.id : first;
-              if (page <= first || page >= last) {
-                scrollIntoView(thumbnail, { top: THUMBNAIL_SCROLL_MARGIN });
-              }
-            }
-          },
-          get pagesRotation() {
-            return this._pagesRotation;
-          },
-          set pagesRotation(rotation) {
-            this._pagesRotation = rotation;
-            for (var i = 0, l = this.thumbnails.length; i < l; i++) {
-              var thumb = this.thumbnails[i];
-              thumb.update(rotation);
-            }
-          },
-          cleanup: function PDFThumbnailViewer_cleanup() {
-            var tempCanvas = PDFThumbnailView.tempImageCache;
-            if (tempCanvas) {
-              // Zeroing the width and height causes Firefox to release graphics
-              // resources immediately, which can greatly reduce memory consumption.
-              tempCanvas.width = 0;
-              tempCanvas.height = 0;
-            }
-            PDFThumbnailView.tempImageCache = null;
-          },
-          /**
-           * @private
-           */
-          _resetView: function PDFThumbnailViewer_resetView() {
-            this.thumbnails = [];
-            this._pageLabels = null;
-            this._pagesRotation = 0;
-            this._pagesRequests = [];
-            // Remove the thumbnails from the DOM.
-            this.container.textContent = '';
-          },
-          setDocument: function PDFThumbnailViewer_setDocument(pdfDocument) {
-            if (this.pdfDocument) {
-              this._cancelRendering();
-              this._resetView();
-            }
-            this.pdfDocument = pdfDocument;
-            if (!pdfDocument) {
-              return Promise.resolve();
-            }
-            return pdfDocument.getPage(1).then(function (firstPage) {
-              var pagesCount = pdfDocument.numPages;
-              var viewport = firstPage.getViewport(1.0);
-              for (var pageNum = 1; pageNum <= pagesCount; ++pageNum) {
-                var thumbnail = new PDFThumbnailView({
-                  container: this.container,
-                  id: pageNum,
-                  defaultViewport: viewport.clone(),
-                  linkService: this.linkService,
-                  renderingQueue: this.renderingQueue,
-                  disableCanvasToImageConversion: false
-                });
-                this.thumbnails.push(thumbnail);
-              }
-            }.bind(this));
-          },
-          /**
-           * @private
-           */
-          _cancelRendering: function PDFThumbnailViewer_cancelRendering() {
-            for (var i = 0, ii = this.thumbnails.length; i < ii; i++) {
-              if (this.thumbnails[i]) {
-                this.thumbnails[i].cancelRendering();
-              }
-            }
-          },
-          /**
-           * @param {Array|null} labels
-           */
-          setPageLabels: function PDFThumbnailViewer_setPageLabels(labels) {
-            if (!this.pdfDocument) {
-              return;
-            }
-            if (!labels) {
-              this._pageLabels = null;
-            } else if (!(labels instanceof Array && this.pdfDocument.numPages === labels.length)) {
-              this._pageLabels = null;
-              console.error('PDFThumbnailViewer_setPageLabels: Invalid page labels.');
-            } else {
-              this._pageLabels = labels;
-            }
-            // Update all the `PDFThumbnailView` instances.
-            for (var i = 0, ii = this.thumbnails.length; i < ii; i++) {
-              var thumbnailView = this.thumbnails[i];
-              var label = this._pageLabels && this._pageLabels[i];
-              thumbnailView.setPageLabel(label);
-            }
-          },
-          /**
-           * @param {PDFThumbnailView} thumbView
-           * @returns {PDFPage}
-           * @private
-           */
-          _ensurePdfPageLoaded: function PDFThumbnailViewer_ensurePdfPageLoaded(thumbView) {
-            if (thumbView.pdfPage) {
-              return Promise.resolve(thumbView.pdfPage);
-            }
-            var pageNumber = thumbView.id;
-            if (this._pagesRequests[pageNumber]) {
-              return this._pagesRequests[pageNumber];
-            }
-            var promise = this.pdfDocument.getPage(pageNumber).then(function (pdfPage) {
-              thumbView.setPdfPage(pdfPage);
-              this._pagesRequests[pageNumber] = null;
-              return pdfPage;
-            }.bind(this));
-            this._pagesRequests[pageNumber] = promise;
-            return promise;
-          },
-          forceRendering: function () {
-            var visibleThumbs = this._getVisibleThumbs();
-            var thumbView = this.renderingQueue.getHighestPriority(visibleThumbs, this.thumbnails, this.scroll.down);
-            if (thumbView) {
-              this._ensurePdfPageLoaded(thumbView).then(function () {
-                this.renderingQueue.renderView(thumbView);
-              }.bind(this));
-              return true;
-            }
-            return false;
-          }
-        };
-        return PDFThumbnailViewer;
-      }();
-      exports.PDFThumbnailViewer = PDFThumbnailViewer;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebTextLayerBuilder = {}, root.pdfjsWebDOMEvents, root.pdfjsWebPDFJS);
-    }(this, function (exports, domEvents, pdfjsLib) {
-      var EXPAND_DIVS_TIMEOUT = 300;
-      // ms
-      /**
-       * @typedef {Object} TextLayerBuilderOptions
-       * @property {HTMLDivElement} textLayerDiv - The text layer container.
-       * @property {EventBus} eventBus - The application event bus.
-       * @property {number} pageIndex - The page index.
-       * @property {PageViewport} viewport - The viewport of the text layer.
-       * @property {PDFFindController} findController
-       * @property {boolean} enhanceTextSelection - Option to turn on improved
-       *   text selection.
-       */
-      /**
-       * TextLayerBuilder provides text-selection functionality for the PDF.
-       * It does this by creating overlay divs over the PDF text. These divs
-       * contain text that matches the PDF text they are overlaying. This object
-       * also provides a way to highlight text that is being searched for.
-       * @class
-       */
-      var TextLayerBuilder = function TextLayerBuilderClosure() {
-        function TextLayerBuilder(options) {
-          this.textLayerDiv = options.textLayerDiv;
-          this.eventBus = options.eventBus || domEvents.getGlobalEventBus();
-          this.textContent = null;
-          this.renderingDone = false;
-          this.pageIdx = options.pageIndex;
-          this.pageNumber = this.pageIdx + 1;
-          this.matches = [];
-          this.viewport = options.viewport;
-          this.textDivs = [];
-          this.findController = options.findController || null;
-          this.textLayerRenderTask = null;
-          this.enhanceTextSelection = options.enhanceTextSelection;
-          this._bindMouse();
-        }
-        TextLayerBuilder.prototype = {
-          /**
-           * @private
-           */
-          _finishRendering: function TextLayerBuilder_finishRendering() {
-            this.renderingDone = true;
-            if (!this.enhanceTextSelection) {
-              var endOfContent = document.createElement('div');
-              endOfContent.className = 'endOfContent';
-              this.textLayerDiv.appendChild(endOfContent);
-            }
-            this.eventBus.dispatch('textlayerrendered', {
-              source: this,
-              pageNumber: this.pageNumber,
-              numTextDivs: this.textDivs.length
-            });
-          },
-          /**
-           * Renders the text layer.
-           * @param {number} timeout (optional) if specified, the rendering waits
-           *   for specified amount of ms.
-           */
-          render: function TextLayerBuilder_render(timeout) {
-            if (!this.textContent || this.renderingDone) {
-              return;
-            }
-            this.cancel();
-            this.textDivs = [];
-            var textLayerFrag = document.createDocumentFragment();
-            this.textLayerRenderTask = pdfjsLib.renderTextLayer({
-              textContent: this.textContent,
-              container: textLayerFrag,
-              viewport: this.viewport,
-              textDivs: this.textDivs,
-              timeout: timeout,
-              enhanceTextSelection: this.enhanceTextSelection
-            });
-            this.textLayerRenderTask.promise.then(function () {
-              this.textLayerDiv.appendChild(textLayerFrag);
-              this._finishRendering();
-              this.updateMatches();
-            }.bind(this), function (reason) {
-            });
-          },
-          /**
-           * Cancels rendering of the text layer.
-           */
-          cancel: function TextLayerBuilder_cancel() {
-            if (this.textLayerRenderTask) {
-              this.textLayerRenderTask.cancel();
-              this.textLayerRenderTask = null;
-            }
-          },
-          setTextContent: function TextLayerBuilder_setTextContent(textContent) {
-            this.cancel();
-            this.textContent = textContent;
-          },
-          convertMatches: function TextLayerBuilder_convertMatches(matches, matchesLength) {
-            var i = 0;
-            var iIndex = 0;
-            var bidiTexts = this.textContent.items;
-            var end = bidiTexts.length - 1;
-            var queryLen = this.findController === null ? 0 : this.findController.state.query.length;
-            var ret = [];
-            if (!matches) {
-              return ret;
-            }
-            for (var m = 0, len = matches.length; m < len; m++) {
-              // Calculate the start position.
-              var matchIdx = matches[m];
-              // Loop over the divIdxs.
-              while (i !== end && matchIdx >= iIndex + bidiTexts[i].str.length) {
-                iIndex += bidiTexts[i].str.length;
-                i++;
-              }
-              if (i === bidiTexts.length) {
-                console.error('Could not find a matching mapping');
-              }
-              var match = {
-                begin: {
-                  divIdx: i,
-                  offset: matchIdx - iIndex
-                }
-              };
-              // Calculate the end position.
-              if (matchesLength) {
-                // multiterm search
-                matchIdx += matchesLength[m];
-              } else {
-                // phrase search
-                matchIdx += queryLen;
-              }
-              // Somewhat the same array as above, but use > instead of >= to get
-              // the end position right.
-              while (i !== end && matchIdx > iIndex + bidiTexts[i].str.length) {
-                iIndex += bidiTexts[i].str.length;
-                i++;
-              }
-              match.end = {
-                divIdx: i,
-                offset: matchIdx - iIndex
-              };
-              ret.push(match);
-            }
-            return ret;
-          },
-          renderMatches: function TextLayerBuilder_renderMatches(matches) {
-            // Early exit if there is nothing to render.
-            if (matches.length === 0) {
-              return;
-            }
-            var bidiTexts = this.textContent.items;
-            var textDivs = this.textDivs;
-            var prevEnd = null;
-            var pageIdx = this.pageIdx;
-            var isSelectedPage = this.findController === null ? false : pageIdx === this.findController.selected.pageIdx;
-            var selectedMatchIdx = this.findController === null ? -1 : this.findController.selected.matchIdx;
-            var highlightAll = this.findController === null ? false : this.findController.state.highlightAll;
-            var infinity = {
-              divIdx: -1,
-              offset: undefined
-            };
-            function beginText(begin, className) {
-              var divIdx = begin.divIdx;
-              textDivs[divIdx].textContent = '';
-              appendTextToDiv(divIdx, 0, begin.offset, className);
-            }
-            function appendTextToDiv(divIdx, fromOffset, toOffset, className) {
-              var div = textDivs[divIdx];
-              var content = bidiTexts[divIdx].str.substring(fromOffset, toOffset);
-              var node = document.createTextNode(content);
-              if (className) {
-                var span = document.createElement('span');
-                span.className = className;
-                span.appendChild(node);
-                div.appendChild(span);
-                return;
-              }
-              div.appendChild(node);
-            }
-            var i0 = selectedMatchIdx, i1 = i0 + 1;
-            if (highlightAll) {
-              i0 = 0;
-              i1 = matches.length;
-            } else if (!isSelectedPage) {
-              // Not highlighting all and this isn't the selected page, so do nothing.
-              return;
-            }
-            for (var i = i0; i < i1; i++) {
-              var match = matches[i];
-              var begin = match.begin;
-              var end = match.end;
-              var isSelected = isSelectedPage && i === selectedMatchIdx;
-              var highlightSuffix = isSelected ? ' selected' : '';
-              if (this.findController) {
-                this.findController.updateMatchPosition(pageIdx, i, textDivs, begin.divIdx);
-              }
-              // Match inside new div.
-              if (!prevEnd || begin.divIdx !== prevEnd.divIdx) {
-                // If there was a previous div, then add the text at the end.
-                if (prevEnd !== null) {
-                  appendTextToDiv(prevEnd.divIdx, prevEnd.offset, infinity.offset);
-                }
-                // Clear the divs and set the content until the starting point.
-                beginText(begin);
-              } else {
-                appendTextToDiv(prevEnd.divIdx, prevEnd.offset, begin.offset);
-              }
-              if (begin.divIdx === end.divIdx) {
-                appendTextToDiv(begin.divIdx, begin.offset, end.offset, 'highlight' + highlightSuffix);
-              } else {
-                appendTextToDiv(begin.divIdx, begin.offset, infinity.offset, 'highlight begin' + highlightSuffix);
-                for (var n0 = begin.divIdx + 1, n1 = end.divIdx; n0 < n1; n0++) {
-                  textDivs[n0].className = 'highlight middle' + highlightSuffix;
-                }
-                beginText(end, 'highlight end' + highlightSuffix);
-              }
-              prevEnd = end;
-            }
-            if (prevEnd) {
-              appendTextToDiv(prevEnd.divIdx, prevEnd.offset, infinity.offset);
-            }
-          },
-          updateMatches: function TextLayerBuilder_updateMatches() {
-            // Only show matches when all rendering is done.
-            if (!this.renderingDone) {
-              return;
-            }
-            // Clear all matches.
-            var matches = this.matches;
-            var textDivs = this.textDivs;
-            var bidiTexts = this.textContent.items;
-            var clearedUntilDivIdx = -1;
-            // Clear all current matches.
-            for (var i = 0, len = matches.length; i < len; i++) {
-              var match = matches[i];
-              var begin = Math.max(clearedUntilDivIdx, match.begin.divIdx);
-              for (var n = begin, end = match.end.divIdx; n <= end; n++) {
-                var div = textDivs[n];
-                div.textContent = bidiTexts[n].str;
-                div.className = '';
-              }
-              clearedUntilDivIdx = match.end.divIdx + 1;
-            }
-            if (this.findController === null || !this.findController.active) {
-              return;
-            }
-            // Convert the matches on the page controller into the match format
-            // used for the textLayer.
-            var pageMatches, pageMatchesLength;
-            if (this.findController !== null) {
-              pageMatches = this.findController.pageMatches[this.pageIdx] || null;
-              pageMatchesLength = this.findController.pageMatchesLength ? this.findController.pageMatchesLength[this.pageIdx] || null : null;
-            }
-            this.matches = this.convertMatches(pageMatches, pageMatchesLength);
-            this.renderMatches(this.matches);
-          },
-          /**
-           * Fixes text selection: adds additional div where mouse was clicked.
-           * This reduces flickering of the content if mouse slowly dragged down/up.
-           * @private
-           */
-          _bindMouse: function TextLayerBuilder_bindMouse() {
-            var div = this.textLayerDiv;
-            var self = this;
-            var expandDivsTimer = null;
-            div.addEventListener('mousedown', function (e) {
-              if (self.enhanceTextSelection && self.textLayerRenderTask) {
-                self.textLayerRenderTask.expandTextDivs(true);
-                return;
-              }
-              var end = div.querySelector('.endOfContent');
-              if (!end) {
-                return;
-              }
-              end.classList.add('active');
-            });
-            div.addEventListener('mouseup', function (e) {
-              if (self.enhanceTextSelection && self.textLayerRenderTask) {
-                self.textLayerRenderTask.expandTextDivs(false);
-                return;
-              }
-              var end = div.querySelector('.endOfContent');
-              if (!end) {
-                return;
-              }
-              end.classList.remove('active');
-            });
-          }
-        };
-        return TextLayerBuilder;
-      }();
-      /**
-       * @constructor
-       * @implements IPDFTextLayerFactory
-       */
-      function DefaultTextLayerFactory() {
-      }
-      DefaultTextLayerFactory.prototype = {
-        /**
-         * @param {HTMLDivElement} textLayerDiv
-         * @param {number} pageIndex
-         * @param {PageViewport} viewport
-         * @param {boolean} enhanceTextSelection
-         * @returns {TextLayerBuilder}
-         */
-        createTextLayerBuilder: function (textLayerDiv, pageIndex, viewport, enhanceTextSelection) {
-          return new TextLayerBuilder({
-            textLayerDiv: textLayerDiv,
-            pageIndex: pageIndex,
-            viewport: viewport,
-            enhanceTextSelection: enhanceTextSelection
-          });
-        }
-      };
-      exports.TextLayerBuilder = TextLayerBuilder;
-      exports.DefaultTextLayerFactory = DefaultTextLayerFactory;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebAnnotationLayerBuilder = {}, root.pdfjsWebUIUtils, root.pdfjsWebPDFLinkService, root.pdfjsWebPDFJS);
-    }(this, function (exports, uiUtils, pdfLinkService, pdfjsLib) {
-      var mozL10n = uiUtils.mozL10n;
-      var SimpleLinkService = pdfLinkService.SimpleLinkService;
-      /**
-       * @typedef {Object} AnnotationLayerBuilderOptions
-       * @property {HTMLDivElement} pageDiv
-       * @property {PDFPage} pdfPage
-       * @property {boolean} renderInteractiveForms
-       * @property {IPDFLinkService} linkService
-       * @property {DownloadManager} downloadManager
-       */
-      /**
-       * @class
-       */
-      var AnnotationLayerBuilder = function AnnotationLayerBuilderClosure() {
-        /**
-         * @param {AnnotationLayerBuilderOptions} options
-         * @constructs AnnotationLayerBuilder
-         */
-        function AnnotationLayerBuilder(options) {
-          this.pageDiv = options.pageDiv;
-          this.pdfPage = options.pdfPage;
-          this.renderInteractiveForms = options.renderInteractiveForms;
-          this.linkService = options.linkService;
-          this.downloadManager = options.downloadManager;
-          this.div = null;
-        }
-        AnnotationLayerBuilder.prototype = /** @lends AnnotationLayerBuilder.prototype */
-        {
-          /**
-           * @param {PageViewport} viewport
-           * @param {string} intent (default value is 'display')
-           */
-          render: function AnnotationLayerBuilder_render(viewport, intent) {
-            var self = this;
-            var parameters = { intent: intent === undefined ? 'display' : intent };
-            this.pdfPage.getAnnotations(parameters).then(function (annotations) {
-              viewport = viewport.clone({ dontFlip: true });
-              parameters = {
-                viewport: viewport,
-                div: self.div,
-                annotations: annotations,
-                page: self.pdfPage,
-                renderInteractiveForms: self.renderInteractiveForms,
-                linkService: self.linkService,
-                downloadManager: self.downloadManager
-              };
-              if (self.div) {
-                // If an annotationLayer already exists, refresh its children's
-                // transformation matrices.
-                pdfjsLib.AnnotationLayer.update(parameters);
-              } else {
-                // Create an annotation layer div and render the annotations
-                // if there is at least one annotation.
-                if (annotations.length === 0) {
-                  return;
-                }
-                self.div = document.createElement('div');
-                self.div.className = 'annotationLayer';
-                self.pageDiv.appendChild(self.div);
-                parameters.div = self.div;
-                pdfjsLib.AnnotationLayer.render(parameters);
-                if (typeof mozL10n !== 'undefined') {
-                  mozL10n.translate(self.div);
-                }
-              }
-            });
-          },
-          hide: function AnnotationLayerBuilder_hide() {
-            if (!this.div) {
-              return;
-            }
-            this.div.setAttribute('hidden', 'true');
-          }
-        };
-        return AnnotationLayerBuilder;
-      }();
-      /**
-       * @constructor
-       * @implements IPDFAnnotationLayerFactory
-       */
-      function DefaultAnnotationLayerFactory() {
-      }
-      DefaultAnnotationLayerFactory.prototype = {
-        /**
-         * @param {HTMLDivElement} pageDiv
-         * @param {PDFPage} pdfPage
-         * @param {boolean} renderInteractiveForms
-         * @returns {AnnotationLayerBuilder}
-         */
-        createAnnotationLayerBuilder: function (pageDiv, pdfPage, renderInteractiveForms) {
-          return new AnnotationLayerBuilder({
-            pageDiv: pageDiv,
-            pdfPage: pdfPage,
-            renderInteractiveForms: renderInteractiveForms,
-            linkService: new SimpleLinkService()
-          });
-        }
-      };
-      exports.AnnotationLayerBuilder = AnnotationLayerBuilder;
-      exports.DefaultAnnotationLayerFactory = DefaultAnnotationLayerFactory;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebPDFViewer = {}, root.pdfjsWebUIUtils, root.pdfjsWebPDFPageView, root.pdfjsWebPDFRenderingQueue, root.pdfjsWebTextLayerBuilder, root.pdfjsWebAnnotationLayerBuilder, root.pdfjsWebPDFLinkService, root.pdfjsWebDOMEvents, root.pdfjsWebPDFJS);
-    }(this, function (exports, uiUtils, pdfPageView, pdfRenderingQueue, textLayerBuilder, annotationLayerBuilder, pdfLinkService, domEvents, pdfjsLib) {
-      var UNKNOWN_SCALE = uiUtils.UNKNOWN_SCALE;
-      var SCROLLBAR_PADDING = uiUtils.SCROLLBAR_PADDING;
-      var VERTICAL_PADDING = uiUtils.VERTICAL_PADDING;
-      var MAX_AUTO_SCALE = uiUtils.MAX_AUTO_SCALE;
-      var CSS_UNITS = uiUtils.CSS_UNITS;
-      var DEFAULT_SCALE = uiUtils.DEFAULT_SCALE;
-      var DEFAULT_SCALE_VALUE = uiUtils.DEFAULT_SCALE_VALUE;
-      var scrollIntoView = uiUtils.scrollIntoView;
-      var watchScroll = uiUtils.watchScroll;
-      var getVisibleElements = uiUtils.getVisibleElements;
-      var PDFPageView = pdfPageView.PDFPageView;
-      var RenderingStates = pdfRenderingQueue.RenderingStates;
-      var PDFRenderingQueue = pdfRenderingQueue.PDFRenderingQueue;
-      var TextLayerBuilder = textLayerBuilder.TextLayerBuilder;
-      var AnnotationLayerBuilder = annotationLayerBuilder.AnnotationLayerBuilder;
-      var SimpleLinkService = pdfLinkService.SimpleLinkService;
-      var PresentationModeState = {
-        UNKNOWN: 0,
-        NORMAL: 1,
-        CHANGING: 2,
-        FULLSCREEN: 3
-      };
-      var DEFAULT_CACHE_SIZE = 10;
-      /**
-       * @typedef {Object} PDFViewerOptions
-       * @property {HTMLDivElement} container - The container for the viewer element.
-       * @property {HTMLDivElement} viewer - (optional) The viewer element.
-       * @property {EventBus} eventBus - The application event bus.
-       * @property {IPDFLinkService} linkService - The navigation/linking service.
-       * @property {DownloadManager} downloadManager - (optional) The download
-       *   manager component.
-       * @property {PDFRenderingQueue} renderingQueue - (optional) The rendering
-       *   queue object.
-       * @property {boolean} removePageBorders - (optional) Removes the border shadow
-       *   around the pages. The default is false.
-       * @property {boolean} enhanceTextSelection - (optional) Enables the improved
-       *   text selection behaviour. The default is `false`.
-       * @property {boolean} renderInteractiveForms - (optional) Enables rendering of
-       *   interactive form elements. The default is `false`.
-       */
-      /**
-       * Simple viewer control to display PDF content/pages.
-       * @class
-       * @implements {IRenderableView}
-       */
-      var PDFViewer = function pdfViewer() {
-        function PDFPageViewBuffer(size) {
-          var data = [];
-          this.push = function cachePush(view) {
-            var i = data.indexOf(view);
-            if (i >= 0) {
-              data.splice(i, 1);
-            }
-            data.push(view);
-            if (data.length > size) {
-              data.shift().destroy();
-            }
-          };
-          this.resize = function (newSize) {
-            size = newSize;
-            while (data.length > size) {
-              data.shift().destroy();
-            }
-          };
-        }
-        function isSameScale(oldScale, newScale) {
-          if (newScale === oldScale) {
-            return true;
-          }
-          if (Math.abs(newScale - oldScale) < 1e-15) {
-            // Prevent unnecessary re-rendering of all pages when the scale
-            // changes only because of limited numerical precision.
-            return true;
-          }
-          return false;
-        }
-        /**
-         * @constructs PDFViewer
-         * @param {PDFViewerOptions} options
-         */
-        function PDFViewer(options) {
-          this.container = options.container;
-          this.viewer = options.viewer || options.container.firstElementChild;
-          this.eventBus = options.eventBus || domEvents.getGlobalEventBus();
-          this.linkService = options.linkService || new SimpleLinkService();
-          this.downloadManager = options.downloadManager || null;
-          this.removePageBorders = options.removePageBorders || false;
-          this.enhanceTextSelection = options.enhanceTextSelection || false;
-          this.renderInteractiveForms = options.renderInteractiveForms || false;
-          this.defaultRenderingQueue = !options.renderingQueue;
-          if (this.defaultRenderingQueue) {
-            // Custom rendering queue is not specified, using default one
-            this.renderingQueue = new PDFRenderingQueue();
-            this.renderingQueue.setViewer(this);
-          } else {
-            this.renderingQueue = options.renderingQueue;
-          }
-          this.scroll = watchScroll(this.container, this._scrollUpdate.bind(this));
-          this.presentationModeState = PresentationModeState.UNKNOWN;
-          this._resetView();
-          if (this.removePageBorders) {
-            this.viewer.classList.add('removePageBorders');
-          }
-        }
-        PDFViewer.prototype = /** @lends PDFViewer.prototype */
-        {
-          get pagesCount() {
-            return this._pages.length;
-          },
-          getPageView: function (index) {
-            return this._pages[index];
-          },
-          /**
-           * @returns {boolean} true if all {PDFPageView} objects are initialized.
-           */
-          get pageViewsReady() {
-            return this._pageViewsReady;
-          },
-          /**
-           * @returns {number}
-           */
-          get currentPageNumber() {
-            return this._currentPageNumber;
-          },
-          /**
-           * @param {number} val - The page number.
-           */
-          set currentPageNumber(val) {
-            if ((val | 0) !== val) {
-              // Ensure that `val` is an integer.
-              throw new Error('Invalid page number.');
-            }
-            if (!this.pdfDocument) {
-              this._currentPageNumber = val;
-              return;
-            }
-            // The intent can be to just reset a scroll position and/or scale.
-            this._setCurrentPageNumber(val, /* resetCurrentPageView = */
-            true);
-          },
-          /**
-           * @private
-           */
-          _setCurrentPageNumber: function PDFViewer_setCurrentPageNumber(val, resetCurrentPageView) {
-            if (this._currentPageNumber === val) {
-              if (resetCurrentPageView) {
-                this._resetCurrentPageView();
-              }
-              return;
-            }
-            if (!(0 < val && val <= this.pagesCount)) {
-              console.error('PDFViewer_setCurrentPageNumber: "' + val + '" is out of bounds.');
-              return;
-            }
-            var arg = {
-              source: this,
-              pageNumber: val,
-              pageLabel: this._pageLabels && this._pageLabels[val - 1]
-            };
-            this._currentPageNumber = val;
-            this.eventBus.dispatch('pagechanging', arg);
-            this.eventBus.dispatch('pagechange', arg);
-            if (resetCurrentPageView) {
-              this._resetCurrentPageView();
-            }
-          },
-          /**
-           * @returns {string|null} Returns the current page label,
-           *                        or `null` if no page labels exist.
-           */
-          get currentPageLabel() {
-            return this._pageLabels && this._pageLabels[this._currentPageNumber - 1];
-          },
-          /**
-           * @param {string} val - The page label.
-           */
-          set currentPageLabel(val) {
-            var pageNumber = val | 0;
-            // Fallback page number.
-            if (this._pageLabels) {
-              var i = this._pageLabels.indexOf(val);
-              if (i >= 0) {
-                pageNumber = i + 1;
-              }
-            }
-            this.currentPageNumber = pageNumber;
-          },
-          /**
-           * @returns {number}
-           */
-          get currentScale() {
-            return this._currentScale !== UNKNOWN_SCALE ? this._currentScale : DEFAULT_SCALE;
-          },
-          /**
-           * @param {number} val - Scale of the pages in percents.
-           */
-          set currentScale(val) {
-            if (isNaN(val)) {
-              throw new Error('Invalid numeric scale');
-            }
-            if (!this.pdfDocument) {
-              this._currentScale = val;
-              this._currentScaleValue = val !== UNKNOWN_SCALE ? val.toString() : null;
-              return;
-            }
-            this._setScale(val, false);
-          },
-          /**
-           * @returns {string}
-           */
-          get currentScaleValue() {
-            return this._currentScaleValue;
-          },
-          /**
-           * @param val - The scale of the pages (in percent or predefined value).
-           */
-          set currentScaleValue(val) {
-            if (!this.pdfDocument) {
-              this._currentScale = isNaN(val) ? UNKNOWN_SCALE : val;
-              this._currentScaleValue = val.toString();
-              return;
-            }
-            this._setScale(val, false);
-          },
-          /**
-           * @returns {number}
-           */
-          get pagesRotation() {
-            return this._pagesRotation;
-          },
-          /**
-           * @param {number} rotation - The rotation of the pages (0, 90, 180, 270).
-           */
-          set pagesRotation(rotation) {
-            if (!(typeof rotation === 'number' && rotation % 90 === 0)) {
-              throw new Error('Invalid pages rotation angle.');
-            }
-            this._pagesRotation = rotation;
-            if (!this.pdfDocument) {
-              return;
-            }
-            for (var i = 0, l = this._pages.length; i < l; i++) {
-              var pageView = this._pages[i];
-              pageView.update(pageView.scale, rotation);
-            }
-            this._setScale(this._currentScaleValue, true);
-            if (this.defaultRenderingQueue) {
-              this.update();
-            }
-          },
-          /**
-           * @param pdfDocument {PDFDocument}
-           */
-          setDocument: function (pdfDocument) {
-            if (this.pdfDocument) {
-              this._cancelRendering();
-              this._resetView();
-            }
-            this.pdfDocument = pdfDocument;
-            if (!pdfDocument) {
-              return;
-            }
-            var pagesCount = pdfDocument.numPages;
-            var self = this;
-            var resolvePagesPromise;
-            var pagesPromise = new Promise(function (resolve) {
-              resolvePagesPromise = resolve;
-            });
-            this.pagesPromise = pagesPromise;
-            pagesPromise.then(function () {
-              self._pageViewsReady = true;
-              self.eventBus.dispatch('pagesloaded', {
-                source: self,
-                pagesCount: pagesCount
-              });
-            });
-            var isOnePageRenderedResolved = false;
-            var resolveOnePageRendered = null;
-            var onePageRendered = new Promise(function (resolve) {
-              resolveOnePageRendered = resolve;
-            });
-            this.onePageRendered = onePageRendered;
-            var bindOnAfterAndBeforeDraw = function (pageView) {
-              pageView.onBeforeDraw = function pdfViewLoadOnBeforeDraw() {
-                // Add the page to the buffer at the start of drawing. That way it can
-                // be evicted from the buffer and destroyed even if we pause its
-                // rendering.
-                self._buffer.push(this);
-              };
-              pageView.onAfterDraw = function pdfViewLoadOnAfterDraw() {
-                if (!isOnePageRenderedResolved) {
-                  isOnePageRenderedResolved = true;
-                  resolveOnePageRendered();
-                }
-              };
-            };
-            var firstPagePromise = pdfDocument.getPage(1);
-            this.firstPagePromise = firstPagePromise;
-            // Fetch a single page so we can get a viewport that will be the default
-            // viewport for all pages
-            return firstPagePromise.then(function (pdfPage) {
-              var scale = this.currentScale;
-              var viewport = pdfPage.getViewport(scale * CSS_UNITS);
-              for (var pageNum = 1; pageNum <= pagesCount; ++pageNum) {
-                var textLayerFactory = null;
-                if (!pdfjsLib.PDFJS.disableTextLayer) {
-                  textLayerFactory = this;
-                }
-                var pageView = new PDFPageView({
-                  container: this.viewer,
-                  eventBus: this.eventBus,
-                  id: pageNum,
-                  scale: scale,
-                  defaultViewport: viewport.clone(),
-                  renderingQueue: this.renderingQueue,
-                  textLayerFactory: textLayerFactory,
-                  annotationLayerFactory: this,
-                  enhanceTextSelection: this.enhanceTextSelection,
-                  renderInteractiveForms: this.renderInteractiveForms
-                });
-                bindOnAfterAndBeforeDraw(pageView);
-                this._pages.push(pageView);
-              }
-              var linkService = this.linkService;
-              // Fetch all the pages since the viewport is needed before printing
-              // starts to create the correct size canvas. Wait until one page is
-              // rendered so we don't tie up too many resources early on.
-              onePageRendered.then(function () {
-                if (!pdfjsLib.PDFJS.disableAutoFetch) {
-                  var getPagesLeft = pagesCount;
-                  for (var pageNum = 1; pageNum <= pagesCount; ++pageNum) {
-                    pdfDocument.getPage(pageNum).then(function (pageNum, pdfPage) {
-                      var pageView = self._pages[pageNum - 1];
-                      if (!pageView.pdfPage) {
-                        pageView.setPdfPage(pdfPage);
-                      }
-                      linkService.cachePageRef(pageNum, pdfPage.ref);
-                      getPagesLeft--;
-                      if (!getPagesLeft) {
-                        resolvePagesPromise();
-                      }
-                    }.bind(null, pageNum));
-                  }
-                } else {
-                  // XXX: Printing is semi-broken with auto fetch disabled.
-                  resolvePagesPromise();
-                }
-              });
-              self.eventBus.dispatch('pagesinit', { source: self });
-              if (this.defaultRenderingQueue) {
-                this.update();
-              }
-              if (this.findController) {
-                this.findController.resolveFirstPage();
-              }
-            }.bind(this));
-          },
-          /**
-           * @param {Array|null} labels
-           */
-          setPageLabels: function PDFViewer_setPageLabels(labels) {
-            if (!this.pdfDocument) {
-              return;
-            }
-            if (!labels) {
-              this._pageLabels = null;
-            } else if (!(labels instanceof Array && this.pdfDocument.numPages === labels.length)) {
-              this._pageLabels = null;
-              console.error('PDFViewer_setPageLabels: Invalid page labels.');
-            } else {
-              this._pageLabels = labels;
-            }
-            // Update all the `PDFPageView` instances.
-            for (var i = 0, ii = this._pages.length; i < ii; i++) {
-              var pageView = this._pages[i];
-              var label = this._pageLabels && this._pageLabels[i];
-              pageView.setPageLabel(label);
-            }
-          },
-          _resetView: function () {
-            this._pages = [];
-            this._currentPageNumber = 1;
-            this._currentScale = UNKNOWN_SCALE;
-            this._currentScaleValue = null;
-            this._pageLabels = null;
-            this._buffer = new PDFPageViewBuffer(DEFAULT_CACHE_SIZE);
-            this._location = null;
-            this._pagesRotation = 0;
-            this._pagesRequests = [];
-            this._pageViewsReady = false;
-            // Remove the pages from the DOM.
-            this.viewer.textContent = '';
-          },
-          _scrollUpdate: function PDFViewer_scrollUpdate() {
-            if (this.pagesCount === 0) {
-              return;
-            }
-            this.update();
-            for (var i = 0, ii = this._pages.length; i < ii; i++) {
-              this._pages[i].updatePosition();
-            }
-          },
-          _setScaleDispatchEvent: function pdfViewer_setScaleDispatchEvent(newScale, newValue, preset) {
-            var arg = {
-              source: this,
-              scale: newScale,
-              presetValue: preset ? newValue : undefined
-            };
-            this.eventBus.dispatch('scalechanging', arg);
-            this.eventBus.dispatch('scalechange', arg);
-          },
-          _setScaleUpdatePages: function pdfViewer_setScaleUpdatePages(newScale, newValue, noScroll, preset) {
-            this._currentScaleValue = newValue.toString();
-            if (isSameScale(this._currentScale, newScale)) {
-              if (preset) {
-                this._setScaleDispatchEvent(newScale, newValue, true);
-              }
-              return;
-            }
-            for (var i = 0, ii = this._pages.length; i < ii; i++) {
-              this._pages[i].update(newScale);
-            }
-            this._currentScale = newScale;
-            if (!noScroll) {
-              var page = this._currentPageNumber, dest;
-              if (this._location && !pdfjsLib.PDFJS.ignoreCurrentPositionOnZoom && !(this.isInPresentationMode || this.isChangingPresentationMode)) {
-                page = this._location.pageNumber;
-                dest = [
-                  null,
-                  { name: 'XYZ' },
-                  this._location.left,
-                  this._location.top,
-                  null
-                ];
-              }
-              this.scrollPageIntoView({
-                pageNumber: page,
-                destArray: dest,
-                allowNegativeOffset: true
-              });
-            }
-            this._setScaleDispatchEvent(newScale, newValue, preset);
-            if (this.defaultRenderingQueue) {
-              this.update();
-            }
-          },
-          _setScale: function PDFViewer_setScale(value, noScroll) {
-            var scale = parseFloat(value);
-            if (scale > 0) {
-              this._setScaleUpdatePages(scale, value, noScroll, false);
-            } else {
-              var currentPage = this._pages[this._currentPageNumber - 1];
-              if (!currentPage) {
-                return;
-              }
-              var hPadding = this.isInPresentationMode || this.removePageBorders ? 0 : SCROLLBAR_PADDING;
-              var vPadding = this.isInPresentationMode || this.removePageBorders ? 0 : VERTICAL_PADDING;
-              var pageWidthScale = (this.container.clientWidth - hPadding) / currentPage.width * currentPage.scale;
-              var pageHeightScale = (this.container.clientHeight - vPadding) / currentPage.height * currentPage.scale;
-              switch (value) {
-              case 'page-actual':
-                scale = 1;
-                break;
-              case 'page-width':
-                scale = pageWidthScale;
-                break;
-              case 'page-height':
-                scale = pageHeightScale;
-                break;
-              case 'page-fit':
-                scale = Math.min(pageWidthScale, pageHeightScale);
-                break;
-              case 'auto':
-                var isLandscape = currentPage.width > currentPage.height;
-                // For pages in landscape mode, fit the page height to the viewer
-                // *unless* the page would thus become too wide to fit horizontally.
-                var horizontalScale = isLandscape ? Math.min(pageHeightScale, pageWidthScale) : pageWidthScale;
-                scale = Math.min(MAX_AUTO_SCALE, horizontalScale);
-                break;
-              default:
-                console.error('PDFViewer_setScale: "' + value + '" is an unknown zoom value.');
-                return;
-              }
-              this._setScaleUpdatePages(scale, value, noScroll, true);
-            }
-          },
-          /**
-           * Refreshes page view: scrolls to the current page and updates the scale.
-           * @private
-           */
-          _resetCurrentPageView: function () {
-            if (this.isInPresentationMode) {
-              // Fixes the case when PDF has different page sizes.
-              this._setScale(this._currentScaleValue, true);
-            }
-            var pageView = this._pages[this._currentPageNumber - 1];
-            scrollIntoView(pageView.div);
-          },
-          /**
-           * @typedef ScrollPageIntoViewParameters
-           * @property {number} pageNumber - The page number.
-           * @property {Array} destArray - (optional) The original PDF destination
-           *   array, in the format: <page-ref> </XYZ|/FitXXX> <args..>
-           * @property {boolean} allowNegativeOffset - (optional) Allow negative page
-           *   offsets. The default value is `false`.
-           */
-          /**
-           * Scrolls page into view.
-           * @param {ScrollPageIntoViewParameters} params
-           */
-          scrollPageIntoView: function PDFViewer_scrollPageIntoView(params) {
-            if (!this.pdfDocument) {
-              return;
-            }
-            var pageNumber = params.pageNumber || 0;
-            var dest = params.destArray || null;
-            var allowNegativeOffset = params.allowNegativeOffset || false;
-            if (this.isInPresentationMode || !dest) {
-              this._setCurrentPageNumber(pageNumber, /* resetCurrentPageView */
-              true);
-              return;
-            }
-            var pageView = this._pages[pageNumber - 1];
-            if (!pageView) {
-              console.error('PDFViewer_scrollPageIntoView: ' + 'Invalid "pageNumber" parameter.');
-              return;
-            }
-            var x = 0, y = 0;
-            var width = 0, height = 0, widthScale, heightScale;
-            var changeOrientation = pageView.rotation % 180 === 0 ? false : true;
-            var pageWidth = (changeOrientation ? pageView.height : pageView.width) / pageView.scale / CSS_UNITS;
-            var pageHeight = (changeOrientation ? pageView.width : pageView.height) / pageView.scale / CSS_UNITS;
-            var scale = 0;
-            switch (dest[1].name) {
-            case 'XYZ':
-              x = dest[2];
-              y = dest[3];
-              scale = dest[4];
-              // If x and/or y coordinates are not supplied, default to
-              // _top_ left of the page (not the obvious bottom left,
-              // since aligning the bottom of the intended page with the
-              // top of the window is rarely helpful).
-              x = x !== null ? x : 0;
-              y = y !== null ? y : pageHeight;
-              break;
-            case 'Fit':
-            case 'FitB':
-              scale = 'page-fit';
-              break;
-            case 'FitH':
-            case 'FitBH':
-              y = dest[2];
-              scale = 'page-width';
-              // According to the PDF spec, section 12.3.2.2, a `null` value in the
-              // parameter should maintain the position relative to the new page.
-              if (y === null && this._location) {
-                x = this._location.left;
-                y = this._location.top;
-              }
-              break;
-            case 'FitV':
-            case 'FitBV':
-              x = dest[2];
-              width = pageWidth;
-              height = pageHeight;
-              scale = 'page-height';
-              break;
-            case 'FitR':
-              x = dest[2];
-              y = dest[3];
-              width = dest[4] - x;
-              height = dest[5] - y;
-              var hPadding = this.removePageBorders ? 0 : SCROLLBAR_PADDING;
-              var vPadding = this.removePageBorders ? 0 : VERTICAL_PADDING;
-              widthScale = (this.container.clientWidth - hPadding) / width / CSS_UNITS;
-              heightScale = (this.container.clientHeight - vPadding) / height / CSS_UNITS;
-              scale = Math.min(Math.abs(widthScale), Math.abs(heightScale));
-              break;
-            default:
-              console.error('PDFViewer_scrollPageIntoView: \'' + dest[1].name + '\' is not a valid destination type.');
-              return;
-            }
-            if (scale && scale !== this._currentScale) {
-              this.currentScaleValue = scale;
-            } else if (this._currentScale === UNKNOWN_SCALE) {
-              this.currentScaleValue = DEFAULT_SCALE_VALUE;
-            }
-            if (scale === 'page-fit' && !dest[4]) {
-              scrollIntoView(pageView.div);
-              return;
-            }
-            var boundingRect = [
-              pageView.viewport.convertToViewportPoint(x, y),
-              pageView.viewport.convertToViewportPoint(x + width, y + height)
-            ];
-            var left = Math.min(boundingRect[0][0], boundingRect[1][0]);
-            var top = Math.min(boundingRect[0][1], boundingRect[1][1]);
-            if (!allowNegativeOffset) {
-              // Some bad PDF generators will create destinations with e.g. top values
-              // that exceeds the page height. Ensure that offsets are not negative,
-              // to prevent a previous page from becoming visible (fixes bug 874482).
-              left = Math.max(left, 0);
-              top = Math.max(top, 0);
-            }
-            scrollIntoView(pageView.div, {
-              left: left,
-              top: top
-            });
-          },
-          _updateLocation: function (firstPage) {
-            var currentScale = this._currentScale;
-            var currentScaleValue = this._currentScaleValue;
-            var normalizedScaleValue = parseFloat(currentScaleValue) === currentScale ? Math.round(currentScale * 10000) / 100 : currentScaleValue;
-            var pageNumber = firstPage.id;
-            var pdfOpenParams = '#page=' + pageNumber;
-            pdfOpenParams += '&zoom=' + normalizedScaleValue;
-            var currentPageView = this._pages[pageNumber - 1];
-            var container = this.container;
-            var topLeft = currentPageView.getPagePoint(container.scrollLeft - firstPage.x, container.scrollTop - firstPage.y);
-            var intLeft = Math.round(topLeft[0]);
-            var intTop = Math.round(topLeft[1]);
-            pdfOpenParams += ',' + intLeft + ',' + intTop;
-            this._location = {
-              pageNumber: pageNumber,
-              scale: normalizedScaleValue,
-              top: intTop,
-              left: intLeft,
-              pdfOpenParams: pdfOpenParams
-            };
-          },
-          update: function PDFViewer_update() {
-            var visible = this._getVisiblePages();
-            var visiblePages = visible.views;
-            if (visiblePages.length === 0) {
-              return;
-            }
-            var suggestedCacheSize = Math.max(DEFAULT_CACHE_SIZE, 2 * visiblePages.length + 1);
-            this._buffer.resize(suggestedCacheSize);
-            this.renderingQueue.renderHighestPriority(visible);
-            var currentId = this._currentPageNumber;
-            var firstPage = visible.first;
-            for (var i = 0, ii = visiblePages.length, stillFullyVisible = false; i < ii; ++i) {
-              var page = visiblePages[i];
-              if (page.percent < 100) {
-                break;
-              }
-              if (page.id === currentId) {
-                stillFullyVisible = true;
-                break;
-              }
-            }
-            if (!stillFullyVisible) {
-              currentId = visiblePages[0].id;
-            }
-            if (!this.isInPresentationMode) {
-              this._setCurrentPageNumber(currentId);
-            }
-            this._updateLocation(firstPage);
-            this.eventBus.dispatch('updateviewarea', {
-              source: this,
-              location: this._location
-            });
-          },
-          containsElement: function (element) {
-            return this.container.contains(element);
-          },
-          focus: function () {
-            this.container.focus();
-          },
-          get isInPresentationMode() {
-            return this.presentationModeState === PresentationModeState.FULLSCREEN;
-          },
-          get isChangingPresentationMode() {
-            return this.presentationModeState === PresentationModeState.CHANGING;
-          },
-          get isHorizontalScrollbarEnabled() {
-            return this.isInPresentationMode ? false : this.container.scrollWidth > this.container.clientWidth;
-          },
-          _getVisiblePages: function () {
-            if (!this.isInPresentationMode) {
-              return getVisibleElements(this.container, this._pages, true);
-            } else {
-              // The algorithm in getVisibleElements doesn't work in all browsers and
-              // configurations when presentation mode is active.
-              var visible = [];
-              var currentPage = this._pages[this._currentPageNumber - 1];
-              visible.push({
-                id: currentPage.id,
-                view: currentPage
-              });
-              return {
-                first: currentPage,
-                last: currentPage,
-                views: visible
-              };
-            }
-          },
-          cleanup: function () {
-            for (var i = 0, ii = this._pages.length; i < ii; i++) {
-              if (this._pages[i] && this._pages[i].renderingState !== RenderingStates.FINISHED) {
-                this._pages[i].reset();
-              }
-            }
-          },
-          /**
-           * @private
-           */
-          _cancelRendering: function PDFViewer_cancelRendering() {
-            for (var i = 0, ii = this._pages.length; i < ii; i++) {
-              if (this._pages[i]) {
-                this._pages[i].cancelRendering();
-              }
-            }
-          },
-          /**
-           * @param {PDFPageView} pageView
-           * @returns {PDFPage}
-           * @private
-           */
-          _ensurePdfPageLoaded: function (pageView) {
-            if (pageView.pdfPage) {
-              return Promise.resolve(pageView.pdfPage);
-            }
-            var pageNumber = pageView.id;
-            if (this._pagesRequests[pageNumber]) {
-              return this._pagesRequests[pageNumber];
-            }
-            var promise = this.pdfDocument.getPage(pageNumber).then(function (pdfPage) {
-              pageView.setPdfPage(pdfPage);
-              this._pagesRequests[pageNumber] = null;
-              return pdfPage;
-            }.bind(this));
-            this._pagesRequests[pageNumber] = promise;
-            return promise;
-          },
-          forceRendering: function (currentlyVisiblePages) {
-            var visiblePages = currentlyVisiblePages || this._getVisiblePages();
-            var pageView = this.renderingQueue.getHighestPriority(visiblePages, this._pages, this.scroll.down);
-            if (pageView) {
-              this._ensurePdfPageLoaded(pageView).then(function () {
-                this.renderingQueue.renderView(pageView);
-              }.bind(this));
-              return true;
-            }
-            return false;
-          },
-          getPageTextContent: function (pageIndex) {
-            return this.pdfDocument.getPage(pageIndex + 1).then(function (page) {
-              return page.getTextContent({ normalizeWhitespace: true });
-            });
-          },
-          /**
-           * @param {HTMLDivElement} textLayerDiv
-           * @param {number} pageIndex
-           * @param {PageViewport} viewport
-           * @returns {TextLayerBuilder}
-           */
-          createTextLayerBuilder: function (textLayerDiv, pageIndex, viewport, enhanceTextSelection) {
-            return new TextLayerBuilder({
-              textLayerDiv: textLayerDiv,
-              eventBus: this.eventBus,
-              pageIndex: pageIndex,
-              viewport: viewport,
-              findController: this.isInPresentationMode ? null : this.findController,
-              enhanceTextSelection: this.isInPresentationMode ? false : enhanceTextSelection
-            });
-          },
-          /**
-           * @param {HTMLDivElement} pageDiv
-           * @param {PDFPage} pdfPage
-           * @param {boolean} renderInteractiveForms
-           * @returns {AnnotationLayerBuilder}
-           */
-          createAnnotationLayerBuilder: function (pageDiv, pdfPage, renderInteractiveForms) {
-            return new AnnotationLayerBuilder({
-              pageDiv: pageDiv,
-              pdfPage: pdfPage,
-              renderInteractiveForms: renderInteractiveForms,
-              linkService: this.linkService,
-              downloadManager: this.downloadManager
-            });
-          },
-          setFindController: function (findController) {
-            this.findController = findController;
-          },
-          /**
-           * Returns sizes of the pages.
-           * @returns {Array} Array of objects with width/height fields.
-           */
-          getPagesOverview: function () {
-            return this._pages.map(function (pageView) {
-              var viewport = pageView.pdfPage.getViewport(1);
-              return {
-                width: viewport.width,
-                height: viewport.height
-              };
-            });
-          }
-        };
-        return PDFViewer;
-      }();
-      exports.PresentationModeState = PresentationModeState;
-      exports.PDFViewer = PDFViewer;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebApp = {}, root.pdfjsWebUIUtils, root.pdfjsWebDownloadManager, root.pdfjsWebPDFHistory, root.pdfjsWebPreferences, root.pdfjsWebPDFSidebar, root.pdfjsWebViewHistory, root.pdfjsWebPDFThumbnailViewer, root.pdfjsWebSecondaryToolbar, root.pdfjsWebPasswordPrompt, root.pdfjsWebPDFPresentationMode, root.pdfjsWebPDFDocumentProperties, root.pdfjsWebHandTool, root.pdfjsWebPDFViewer, root.pdfjsWebPDFRenderingQueue, root.pdfjsWebPDFLinkService, root.pdfjsWebPDFOutlineViewer, root.pdfjsWebOverlayManager, root.pdfjsWebPDFAttachmentViewer, root.pdfjsWebPDFFindController, root.pdfjsWebPDFFindBar, root.pdfjsWebDOMEvents, root.pdfjsWebPDFJS);
-    }(this, function (exports, uiUtilsLib, downloadManagerLib, pdfHistoryLib, preferencesLib, pdfSidebarLib, viewHistoryLib, pdfThumbnailViewerLib, secondaryToolbarLib, passwordPromptLib, pdfPresentationModeLib, pdfDocumentPropertiesLib, handToolLib, pdfViewerLib, pdfRenderingQueueLib, pdfLinkServiceLib, pdfOutlineViewerLib, overlayManagerLib, pdfAttachmentViewerLib, pdfFindControllerLib, pdfFindBarLib, domEventsLib, pdfjsLib) {
-      var UNKNOWN_SCALE = uiUtilsLib.UNKNOWN_SCALE;
-      var DEFAULT_SCALE_VALUE = uiUtilsLib.DEFAULT_SCALE_VALUE;
-      var ProgressBar = uiUtilsLib.ProgressBar;
-      var getPDFFileNameFromURL = uiUtilsLib.getPDFFileNameFromURL;
-      var noContextMenuHandler = uiUtilsLib.noContextMenuHandler;
-      var mozL10n = uiUtilsLib.mozL10n;
-      var parseQueryString = uiUtilsLib.parseQueryString;
-      var PDFHistory = pdfHistoryLib.PDFHistory;
-      var Preferences = preferencesLib.Preferences;
-      var SidebarView = pdfSidebarLib.SidebarView;
-      var PDFSidebar = pdfSidebarLib.PDFSidebar;
-      var ViewHistory = viewHistoryLib.ViewHistory;
-      var PDFThumbnailViewer = pdfThumbnailViewerLib.PDFThumbnailViewer;
-      var SecondaryToolbar = secondaryToolbarLib.SecondaryToolbar;
-      var PasswordPrompt = passwordPromptLib.PasswordPrompt;
-      var PDFPresentationMode = pdfPresentationModeLib.PDFPresentationMode;
-      var PDFDocumentProperties = pdfDocumentPropertiesLib.PDFDocumentProperties;
-      var HandTool = handToolLib.HandTool;
-      var PresentationModeState = pdfViewerLib.PresentationModeState;
-      var PDFViewer = pdfViewerLib.PDFViewer;
-      var RenderingStates = pdfRenderingQueueLib.RenderingStates;
-      var PDFRenderingQueue = pdfRenderingQueueLib.PDFRenderingQueue;
-      var PDFLinkService = pdfLinkServiceLib.PDFLinkService;
-      var PDFOutlineViewer = pdfOutlineViewerLib.PDFOutlineViewer;
-      var OverlayManager = overlayManagerLib.OverlayManager;
-      var PDFAttachmentViewer = pdfAttachmentViewerLib.PDFAttachmentViewer;
-      var PDFFindController = pdfFindControllerLib.PDFFindController;
-      var PDFFindBar = pdfFindBarLib.PDFFindBar;
-      var getGlobalEventBus = domEventsLib.getGlobalEventBus;
-      var normalizeWheelEventDelta = uiUtilsLib.normalizeWheelEventDelta;
-      var DEFAULT_SCALE_DELTA = 1.1;
-      var MIN_SCALE = 0.25;
-      var MAX_SCALE = 10.0;
-      var SCALE_SELECT_CONTAINER_PADDING = 8;
-      var SCALE_SELECT_PADDING = 22;
-      var PAGE_NUMBER_LOADING_INDICATOR = 'visiblePageIsLoading';
-      var DISABLE_AUTO_FETCH_LOADING_BAR_TIMEOUT = 5000;
-      function configure(PDFJS) {
-        PDFJS.imageResourcesPath = './images/';
-        PDFJS.workerSrc = '../build/pdf.worker.js';
-        PDFJS.cMapUrl = '../web/cmaps/';
-        PDFJS.cMapPacked = true;
-      }
-      var DefaultExernalServices = {
-        updateFindControlState: function (data) {
-        },
-        initPassiveLoading: function (callbacks) {
-        },
-        fallback: function (data, callback) {
-        },
-        reportTelemetry: function (data) {
-        },
-        createDownloadManager: function () {
-          return new downloadManagerLib.DownloadManager();
-        },
-        supportsIntegratedFind: false,
-        supportsDocumentFonts: true,
-        supportsDocumentColors: true,
-        supportedMouseWheelZoomModifierKeys: {
-          ctrlKey: true,
-          metaKey: true
-        }
-      };
-      var PDFViewerApplication = {
-        initialBookmark: document.location.hash.substring(1),
-        initialDestination: null,
-        initialized: false,
-        fellback: false,
-        appConfig: null,
-        pdfDocument: null,
-        pdfLoadingTask: null,
-        printService: null,
-        /** @type {PDFViewer} */
-        pdfViewer: null,
-        /** @type {PDFThumbnailViewer} */
-        pdfThumbnailViewer: null,
-        /** @type {PDFRenderingQueue} */
-        pdfRenderingQueue: null,
-        /** @type {PDFPresentationMode} */
-        pdfPresentationMode: null,
-        /** @type {PDFDocumentProperties} */
-        pdfDocumentProperties: null,
-        /** @type {PDFLinkService} */
-        pdfLinkService: null,
-        /** @type {PDFHistory} */
-        pdfHistory: null,
-        /** @type {PDFSidebar} */
-        pdfSidebar: null,
-        /** @type {PDFOutlineViewer} */
-        pdfOutlineViewer: null,
-        /** @type {PDFAttachmentViewer} */
-        pdfAttachmentViewer: null,
-        /** @type {ViewHistory} */
-        store: null,
-        /** @type {DownloadManager} */
-        downloadManager: null,
-        /** @type {EventBus} */
-        eventBus: null,
-        pageRotation: 0,
-        isInitialViewSet: false,
-        animationStartedPromise: null,
-        preferenceSidebarViewOnLoad: SidebarView.NONE,
-        preferencePdfBugEnabled: false,
-        preferenceShowPreviousViewOnLoad: true,
-        preferenceDefaultZoomValue: '',
-        preferenceDisablePageLabels: false,
-        isViewerEmbedded: window.parent !== window,
-        url: '',
-        baseUrl: '',
-        externalServices: DefaultExernalServices,
-        hasPageLabels: false,
-        // called once when the document is loaded
-        initialize: function pdfViewInitialize(appConfig) {
-          configure(pdfjsLib.PDFJS);
-          this.appConfig = appConfig;
-          var eventBus = appConfig.eventBus || getGlobalEventBus();
-          this.eventBus = eventBus;
-          this.bindEvents();
-          var pdfRenderingQueue = new PDFRenderingQueue();
-          pdfRenderingQueue.onIdle = this.cleanup.bind(this);
-          this.pdfRenderingQueue = pdfRenderingQueue;
-          var pdfLinkService = new PDFLinkService({ eventBus: eventBus });
-          this.pdfLinkService = pdfLinkService;
-          var downloadManager = this.externalServices.createDownloadManager();
-          this.downloadManager = downloadManager;
-          var container = appConfig.mainContainer;
-          var viewer = appConfig.viewerContainer;
-          this.pdfViewer = new PDFViewer({
-            container: container,
-            viewer: viewer,
-            eventBus: eventBus,
-            renderingQueue: pdfRenderingQueue,
-            linkService: pdfLinkService,
-            downloadManager: downloadManager,
-            enhanceTextSelection: false,
-            renderInteractiveForms: false
-          });
-          pdfRenderingQueue.setViewer(this.pdfViewer);
-          pdfLinkService.setViewer(this.pdfViewer);
-          var thumbnailContainer = appConfig.sidebar.thumbnailView;
-          this.pdfThumbnailViewer = new PDFThumbnailViewer({
-            container: thumbnailContainer,
-            renderingQueue: pdfRenderingQueue,
-            linkService: pdfLinkService
-          });
-          pdfRenderingQueue.setThumbnailViewer(this.pdfThumbnailViewer);
-          Preferences.initialize();
-          this.preferences = Preferences;
-          this.pdfHistory = new PDFHistory({
-            linkService: pdfLinkService,
-            eventBus: this.eventBus
-          });
-          pdfLinkService.setHistory(this.pdfHistory);
-          this.findController = new PDFFindController({ pdfViewer: this.pdfViewer });
-          this.findController.onUpdateResultsCount = function (matchCount) {
-            if (this.supportsIntegratedFind) {
-              return;
-            }
-            this.findBar.updateResultsCount(matchCount);
-          }.bind(this);
-          this.findController.onUpdateState = function (state, previous, matchCount) {
-            if (this.supportsIntegratedFind) {
-              this.externalServices.updateFindControlState({
-                result: state,
-                findPrevious: previous
-              });
-            } else {
-              this.findBar.updateUIState(state, previous, matchCount);
-            }
-          }.bind(this);
-          this.pdfViewer.setFindController(this.findController);
-          // FIXME better PDFFindBar constructor parameters
-          var findBarConfig = Object.create(appConfig.findBar);
-          findBarConfig.findController = this.findController;
-          findBarConfig.eventBus = this.eventBus;
-          this.findBar = new PDFFindBar(findBarConfig);
-          this.overlayManager = OverlayManager;
-          this.handTool = new HandTool({
-            container: container,
-            eventBus: this.eventBus
-          });
-          this.pdfDocumentProperties = new PDFDocumentProperties(appConfig.documentProperties);
-          this.secondaryToolbar = new SecondaryToolbar(appConfig.secondaryToolbar, container, eventBus);
-          if (this.supportsFullscreen) {
-            this.pdfPresentationMode = new PDFPresentationMode({
-              container: container,
-              viewer: viewer,
-              pdfViewer: this.pdfViewer,
-              eventBus: this.eventBus,
-              contextMenuItems: appConfig.fullscreen
-            });
-          }
-          this.passwordPrompt = new PasswordPrompt(appConfig.passwordOverlay);
-          this.pdfOutlineViewer = new PDFOutlineViewer({
-            container: appConfig.sidebar.outlineView,
-            eventBus: this.eventBus,
-            linkService: pdfLinkService
-          });
-          this.pdfAttachmentViewer = new PDFAttachmentViewer({
-            container: appConfig.sidebar.attachmentsView,
-            eventBus: this.eventBus,
-            downloadManager: downloadManager
-          });
-          // FIXME better PDFSidebar constructor parameters
-          var sidebarConfig = Object.create(appConfig.sidebar);
-          sidebarConfig.pdfViewer = this.pdfViewer;
-          sidebarConfig.pdfThumbnailViewer = this.pdfThumbnailViewer;
-          sidebarConfig.pdfOutlineViewer = this.pdfOutlineViewer;
-          sidebarConfig.eventBus = this.eventBus;
-          this.pdfSidebar = new PDFSidebar(sidebarConfig);
-          this.pdfSidebar.onToggled = this.forceRendering.bind(this);
-          var self = this;
-          var PDFJS = pdfjsLib.PDFJS;
-          var initializedPromise = Promise.all([
-            Preferences.get('enableWebGL').then(function resolved(value) {
-              PDFJS.disableWebGL = !value;
-            }),
-            Preferences.get('sidebarViewOnLoad').then(function resolved(value) {
-              self.preferenceSidebarViewOnLoad = value;
-            }),
-            Preferences.get('pdfBugEnabled').then(function resolved(value) {
-              self.preferencePdfBugEnabled = value;
-            }),
-            Preferences.get('showPreviousViewOnLoad').then(function resolved(value) {
-              self.preferenceShowPreviousViewOnLoad = value;
-            }),
-            Preferences.get('defaultZoomValue').then(function resolved(value) {
-              self.preferenceDefaultZoomValue = value;
-            }),
-            Preferences.get('enhanceTextSelection').then(function resolved(value) {
-              // TODO: Move the initialization and fetching of `Preferences` to occur
-              //       before the various viewer components are initialized.
-              //
-              // This was attempted in: https://github.com/mozilla/pdf.js/pull/7586,
-              // but it had to be backed out since it violated implicit assumptions
-              // about some viewer components being synchronously available.
-              //
-              // NOTE: This hack works since the `enhanceTextSelection` option is not
-              //       needed until `PDFViewer.setDocument` has been called.
-              self.pdfViewer.enhanceTextSelection = value;
-            }),
-            Preferences.get('disableTextLayer').then(function resolved(value) {
-              if (PDFJS.disableTextLayer === true) {
-                return;
-              }
-              PDFJS.disableTextLayer = value;
-            }),
-            Preferences.get('disableRange').then(function resolved(value) {
-              if (PDFJS.disableRange === true) {
-                return;
-              }
-              PDFJS.disableRange = value;
-            }),
-            Preferences.get('disableStream').then(function resolved(value) {
-              if (PDFJS.disableStream === true) {
-                return;
-              }
-              PDFJS.disableStream = value;
-            }),
-            Preferences.get('disableAutoFetch').then(function resolved(value) {
-              PDFJS.disableAutoFetch = value;
-            }),
-            Preferences.get('disableFontFace').then(function resolved(value) {
-              if (PDFJS.disableFontFace === true) {
-                return;
-              }
-              PDFJS.disableFontFace = value;
-            }),
-            Preferences.get('useOnlyCssZoom').then(function resolved(value) {
-              PDFJS.useOnlyCssZoom = value;
-            }),
-            Preferences.get('externalLinkTarget').then(function resolved(value) {
-              if (PDFJS.isExternalLinkTargetSet()) {
-                return;
-              }
-              PDFJS.externalLinkTarget = value;
-            }),
-            Preferences.get('renderInteractiveForms').then(function resolved(value) {
-              // TODO: Like the `enhanceTextSelection` preference, move the
-              //       initialization and fetching of `Preferences` to occur
-              //       before the various viewer components are initialized.
-              self.pdfViewer.renderInteractiveForms = value;
-            }),
-            Preferences.get('disablePageLabels').then(function resolved(value) {
-              self.preferenceDisablePageLabels = value;
-            })
-          ]).catch(function (reason) {
-          });
-          return initializedPromise.then(function () {
-            if (self.isViewerEmbedded && !PDFJS.isExternalLinkTargetSet()) {
-              // Prevent external links from "replacing" the viewer,
-              // when it's embedded in e.g. an iframe or an object.
-              PDFJS.externalLinkTarget = PDFJS.LinkTarget.TOP;
-            }
-            self.initialized = true;
-          });
-        },
-        run: function pdfViewRun(config) {
-          this.initialize(config).then(webViewerInitialized);
-        },
-        zoomIn: function pdfViewZoomIn(ticks) {
-          var newScale = this.pdfViewer.currentScale;
-          do {
-            newScale = (newScale * DEFAULT_SCALE_DELTA).toFixed(2);
-            newScale = Math.ceil(newScale * 10) / 10;
-            newScale = Math.min(MAX_SCALE, newScale);
-          } while (--ticks > 0 && newScale < MAX_SCALE);
-          this.pdfViewer.currentScaleValue = newScale;
-        },
-        zoomOut: function pdfViewZoomOut(ticks) {
-          var newScale = this.pdfViewer.currentScale;
-          do {
-            newScale = (newScale / DEFAULT_SCALE_DELTA).toFixed(2);
-            newScale = Math.floor(newScale * 10) / 10;
-            newScale = Math.max(MIN_SCALE, newScale);
-          } while (--ticks > 0 && newScale > MIN_SCALE);
-          this.pdfViewer.currentScaleValue = newScale;
-        },
-        get pagesCount() {
-          return this.pdfDocument ? this.pdfDocument.numPages : 0;
-        },
-        set page(val) {
-          this.pdfViewer.currentPageNumber = val;
-        },
-        get page() {
-          return this.pdfViewer.currentPageNumber;
-        },
-        get printing() {
-          return !!this.printService;
-        },
-        get supportsPrinting() {
-          return PDFPrintServiceFactory.instance.supportsPrinting;
-        },
-        get supportsFullscreen() {
-          var support;
-          support = document.fullscreenEnabled === true || document.mozFullScreenEnabled === true;
-          if (support && pdfjsLib.PDFJS.disableFullscreen === true) {
-            support = false;
-          }
-          return pdfjsLib.shadow(this, 'supportsFullscreen', support);
-        },
-        get supportsIntegratedFind() {
-          return this.externalServices.supportsIntegratedFind;
-        },
-        get supportsDocumentFonts() {
-          return this.externalServices.supportsDocumentFonts;
-        },
-        get supportsDocumentColors() {
-          return this.externalServices.supportsDocumentColors;
-        },
-        get loadingBar() {
-          var bar = new ProgressBar('#loadingBar', {});
-          return pdfjsLib.shadow(this, 'loadingBar', bar);
-        },
-        get supportedMouseWheelZoomModifierKeys() {
-          return this.externalServices.supportedMouseWheelZoomModifierKeys;
-        },
-        initPassiveLoading: function pdfViewInitPassiveLoading() {
-          this.externalServices.initPassiveLoading({
-            onOpenWithTransport: function (url, length, transport) {
-              PDFViewerApplication.open(url, { range: transport });
-              if (length) {
-                PDFViewerApplication.pdfDocumentProperties.setFileSize(length);
-              }
-            },
-            onOpenWithData: function (data) {
-              PDFViewerApplication.open(data);
-            },
-            onOpenWithURL: function (url, length, originalURL) {
-              var file = url, args = null;
-              if (length !== undefined) {
-                args = { length: length };
-              }
-              if (originalURL !== undefined) {
-                file = {
-                  file: url,
-                  originalURL: originalURL
-                };
-              }
-              PDFViewerApplication.open(file, args);
-            },
-            onError: function (e) {
-              PDFViewerApplication.error(mozL10n.get('loading_error', null, 'An error occurred while loading the PDF.'), e);
-            },
-            onProgress: function (loaded, total) {
-              PDFViewerApplication.progress(loaded / total);
-            }
-          });
-        },
-        setTitleUsingUrl: function pdfViewSetTitleUsingUrl(url) {
-          this.url = url;
-          this.baseUrl = url.split('#')[0];
-          try {
-            this.setTitle(decodeURIComponent(pdfjsLib.getFilenameFromUrl(url)) || url);
-          } catch (e) {
-            // decodeURIComponent may throw URIError,
-            // fall back to using the unprocessed url in that case
-            this.setTitle(url);
-          }
-        },
-        setTitle: function pdfViewSetTitle(title) {
-          if (this.isViewerEmbedded) {
-            // Embedded PDF viewers should not be changing their parent page's title.
-            return;
-          }
-          document.title = title;
-        },
-        /**
-         * Closes opened PDF document.
-         * @returns {Promise} - Returns the promise, which is resolved when all
-         *                      destruction is completed.
-         */
-        close: function pdfViewClose() {
-          var errorWrapper = this.appConfig.errorWrapper.container;
-          errorWrapper.setAttribute('hidden', 'true');
-          if (!this.pdfLoadingTask) {
-            return Promise.resolve();
-          }
-          var promise = this.pdfLoadingTask.destroy();
-          this.pdfLoadingTask = null;
-          if (this.pdfDocument) {
-            this.pdfDocument = null;
-            this.pdfThumbnailViewer.setDocument(null);
-            this.pdfViewer.setDocument(null);
-            this.pdfLinkService.setDocument(null, null);
-          }
-          this.store = null;
-          this.isInitialViewSet = false;
-          this.hasPageLabels = false;
-          this.pdfSidebar.reset();
-          this.pdfOutlineViewer.reset();
-          this.pdfAttachmentViewer.reset();
-          this.findController.reset();
-          this.findBar.reset();
-          if (typeof PDFBug !== 'undefined') {
-            PDFBug.cleanup();
-          }
-          return promise;
-        },
-        /**
-         * Opens PDF document specified by URL or array with additional arguments.
-         * @param {string|TypedArray|ArrayBuffer} file - PDF location or binary data.
-         * @param {Object} args - (optional) Additional arguments for the getDocument
-         *                        call, e.g. HTTP headers ('httpHeaders') or
-         *                        alternative data transport ('range').
-         * @returns {Promise} - Returns the promise, which is resolved when document
-         *                      is opened.
-         */
-        open: function pdfViewOpen(file, args) {
-          if (this.pdfLoadingTask) {
-            // We need to destroy already opened document.
-            return this.close().then(function () {
-              // Reload the preferences if a document was previously opened.
-              Preferences.reload();
-              // ... and repeat the open() call.
-              return this.open(file, args);
-            }.bind(this));
-          }
-          var parameters = Object.create(null), scale;
-          if (typeof file === 'string') {
-            // URL
-            this.setTitleUsingUrl(file);
-            parameters.url = file;
-          } else if (file && 'byteLength' in file) {
-            // ArrayBuffer
-            parameters.data = file;
-          } else if (file.url && file.originalUrl) {
-            this.setTitleUsingUrl(file.originalUrl);
-            parameters.url = file.url;
-          }
-          parameters.docBaseUrl = this.baseUrl;
-          if (args) {
-            for (var prop in args) {
-              parameters[prop] = args[prop];
-            }
-            if (args.scale) {
-              scale = args.scale;
-            }
-            if (args.length) {
-              this.pdfDocumentProperties.setFileSize(args.length);
-            }
-          }
-          var self = this;
-          self.downloadComplete = false;
-          var loadingTask = pdfjsLib.getDocument(parameters);
-          this.pdfLoadingTask = loadingTask;
-          loadingTask.onPassword = function passwordNeeded(updateCallback, reason) {
-            self.passwordPrompt.setUpdateCallback(updateCallback, reason);
-            self.passwordPrompt.open();
-          };
-          loadingTask.onProgress = function getDocumentProgress(progressData) {
-            self.progress(progressData.loaded / progressData.total);
-          };
-          // Listen for unsupported features to trigger the fallback UI.
-          loadingTask.onUnsupportedFeature = this.fallback.bind(this);
-          return loadingTask.promise.then(function getDocumentCallback(pdfDocument) {
-            self.load(pdfDocument, scale);
-          }, function getDocumentError(exception) {
-            var message = exception && exception.message;
-            var loadingErrorMessage = mozL10n.get('loading_error', null, 'An error occurred while loading the PDF.');
-            if (exception instanceof pdfjsLib.InvalidPDFException) {
-              // change error message also for other builds
-              loadingErrorMessage = mozL10n.get('invalid_file_error', null, 'Invalid or corrupted PDF file.');
-            } else if (exception instanceof pdfjsLib.MissingPDFException) {
-              // special message for missing PDF's
-              loadingErrorMessage = mozL10n.get('missing_file_error', null, 'Missing PDF file.');
-            } else if (exception instanceof pdfjsLib.UnexpectedResponseException) {
-              loadingErrorMessage = mozL10n.get('unexpected_response_error', null, 'Unexpected server response.');
-            }
-            var moreInfo = { message: message };
-            self.error(loadingErrorMessage, moreInfo);
-            throw new Error(loadingErrorMessage);
-          });
-        },
-        download: function pdfViewDownload() {
-          function downloadByUrl() {
-            downloadManager.downloadUrl(url, filename);
-          }
-          var url = this.baseUrl;
-          var filename = getPDFFileNameFromURL(url);
-          var downloadManager = this.downloadManager;
-          downloadManager.onerror = function (err) {
-            // This error won't really be helpful because it's likely the
-            // fallback won't work either (or is already open).
-            PDFViewerApplication.error('PDF failed to download.');
-          };
-          if (!this.pdfDocument) {
-            // the PDF is not ready yet
-            downloadByUrl();
-            return;
-          }
-          if (!this.downloadComplete) {
-            // the PDF is still downloading
-            downloadByUrl();
-            return;
-          }
-          this.pdfDocument.getData().then(function getDataSuccess(data) {
-            var blob = pdfjsLib.createBlob(data, 'application/pdf');
-            downloadManager.download(blob, url, filename);
-          }, downloadByUrl).then(null, downloadByUrl);
-        },
-        fallback: function pdfViewFallback(featureId) {
-          // Only trigger the fallback once so we don't spam the user with messages
-          // for one PDF.
-          if (this.fellback) {
-            return;
-          }
-          this.fellback = true;
-          this.externalServices.fallback({
-            featureId: featureId,
-            url: this.baseUrl
-          }, function response(download) {
-            if (!download) {
-              return;
-            }
-            PDFViewerApplication.download();
-          });
-        },
-        /**
-         * Show the error box.
-         * @param {String} message A message that is human readable.
-         * @param {Object} moreInfo (optional) Further information about the error
-         *                            that is more technical.  Should have a 'message'
-         *                            and optionally a 'stack' property.
-         */
-        error: function pdfViewError(message, moreInfo) {
-          var moreInfoText = mozL10n.get('error_version_info', {
-            version: pdfjsLib.version || '?',
-            build: pdfjsLib.build || '?'
-          }, 'PDF.js v{{version}} (build: {{build}})') + '\n';
-          if (moreInfo) {
-            moreInfoText += mozL10n.get('error_message', { message: moreInfo.message }, 'Message: {{message}}');
-            if (moreInfo.stack) {
-              moreInfoText += '\n' + mozL10n.get('error_stack', { stack: moreInfo.stack }, 'Stack: {{stack}}');
-            } else {
-              if (moreInfo.filename) {
-                moreInfoText += '\n' + mozL10n.get('error_file', { file: moreInfo.filename }, 'File: {{file}}');
-              }
-              if (moreInfo.lineNumber) {
-                moreInfoText += '\n' + mozL10n.get('error_line', { line: moreInfo.lineNumber }, 'Line: {{line}}');
-              }
-            }
-          }
-          console.error(message + '\n' + moreInfoText);
-          this.fallback();
-        },
-        progress: function pdfViewProgress(level) {
-          var percent = Math.round(level * 100);
-          // When we transition from full request to range requests, it's possible
-          // that we discard some of the loaded data. This can cause the loading
-          // bar to move backwards. So prevent this by only updating the bar if it
-          // increases.
-          if (percent > this.loadingBar.percent || isNaN(percent)) {
-            this.loadingBar.percent = percent;
-            // When disableAutoFetch is enabled, it's not uncommon for the entire file
-            // to never be fetched (depends on e.g. the file structure). In this case
-            // the loading bar will not be completely filled, nor will it be hidden.
-            // To prevent displaying a partially filled loading bar permanently, we
-            // hide it when no data has been loaded during a certain amount of time.
-            if (pdfjsLib.PDFJS.disableAutoFetch && percent) {
-              if (this.disableAutoFetchLoadingBarTimeout) {
-                clearTimeout(this.disableAutoFetchLoadingBarTimeout);
-                this.disableAutoFetchLoadingBarTimeout = null;
-              }
-              this.loadingBar.show();
-              this.disableAutoFetchLoadingBarTimeout = setTimeout(function () {
-                this.loadingBar.hide();
-                this.disableAutoFetchLoadingBarTimeout = null;
-              }.bind(this), DISABLE_AUTO_FETCH_LOADING_BAR_TIMEOUT);
-            }
-          }
-        },
-        load: function pdfViewLoad(pdfDocument, scale) {
-          var self = this;
-          scale = scale || UNKNOWN_SCALE;
-          this.pdfDocument = pdfDocument;
-          this.pdfDocumentProperties.setDocumentAndUrl(pdfDocument, this.url);
-          var downloadedPromise = pdfDocument.getDownloadInfo().then(function () {
-            self.downloadComplete = true;
-            self.loadingBar.hide();
-          });
-          this._updateUIToolbar({ resetNumPages: true });
-          var id = this.documentFingerprint = pdfDocument.fingerprint;
-          var store = this.store = new ViewHistory(id);
-          var baseDocumentUrl;
-          baseDocumentUrl = this.baseUrl;
-          this.pdfLinkService.setDocument(pdfDocument, baseDocumentUrl);
-          var pdfViewer = this.pdfViewer;
-          pdfViewer.currentScale = scale;
-          pdfViewer.setDocument(pdfDocument);
-          var firstPagePromise = pdfViewer.firstPagePromise;
-          var pagesPromise = pdfViewer.pagesPromise;
-          var onePageRendered = pdfViewer.onePageRendered;
-          this.pageRotation = 0;
-          var pdfThumbnailViewer = this.pdfThumbnailViewer;
-          pdfThumbnailViewer.setDocument(pdfDocument);
-          firstPagePromise.then(function (pdfPage) {
-            downloadedPromise.then(function () {
-              self.eventBus.dispatch('documentload', { source: self });
-            });
-            self.loadingBar.setWidth(self.appConfig.viewerContainer);
-            if (!pdfjsLib.PDFJS.disableHistory && !self.isViewerEmbedded) {
-              // The browsing history is only enabled when the viewer is standalone,
-              // i.e. not when it is embedded in a web page.
-              if (!self.preferenceShowPreviousViewOnLoad) {
-                self.pdfHistory.clearHistoryState();
-              }
-              self.pdfHistory.initialize(self.documentFingerprint);
-              if (self.pdfHistory.initialDestination) {
-                self.initialDestination = self.pdfHistory.initialDestination;
-              } else if (self.pdfHistory.initialBookmark) {
-                self.initialBookmark = self.pdfHistory.initialBookmark;
-              }
-            }
-            var initialParams = {
-              destination: self.initialDestination,
-              bookmark: self.initialBookmark,
-              hash: null
-            };
-            store.initializedPromise.then(function resolved() {
-              var storedHash = null, sidebarView = null;
-              if (self.preferenceShowPreviousViewOnLoad && store.get('exists', false)) {
-                var pageNum = store.get('page', '1');
-                var zoom = self.preferenceDefaultZoomValue || store.get('zoom', DEFAULT_SCALE_VALUE);
-                var left = store.get('scrollLeft', '0');
-                var top = store.get('scrollTop', '0');
-                storedHash = 'page=' + pageNum + '&zoom=' + zoom + ',' + left + ',' + top;
-                sidebarView = store.get('sidebarView', SidebarView.NONE);
-              } else if (self.preferenceDefaultZoomValue) {
-                storedHash = 'page=1&zoom=' + self.preferenceDefaultZoomValue;
-              }
-              self.setInitialView(storedHash, {
-                scale: scale,
-                sidebarView: sidebarView
-              });
-              initialParams.hash = storedHash;
-              // Make all navigation keys work on document load,
-              // unless the viewer is embedded in a web page.
-              if (!self.isViewerEmbedded) {
-                self.pdfViewer.focus();
-              }
-            }, function rejected(reason) {
-              console.error(reason);
-              self.setInitialView(null, { scale: scale });
-            });
-            // For documents with different page sizes,
-            // ensure that the correct location becomes visible on load.
-            pagesPromise.then(function resolved() {
-              if (!initialParams.destination && !initialParams.bookmark && !initialParams.hash) {
-                return;
-              }
-              if (self.hasEqualPageSizes) {
-                return;
-              }
-              self.initialDestination = initialParams.destination;
-              self.initialBookmark = initialParams.bookmark;
-              self.pdfViewer.currentScaleValue = self.pdfViewer.currentScaleValue;
-              self.setInitialView(initialParams.hash);
-            });
-          });
-          pdfDocument.getPageLabels().then(function (labels) {
-            if (!labels || self.preferenceDisablePageLabels) {
-              return;
-            }
-            var i = 0, numLabels = labels.length;
-            if (numLabels !== self.pagesCount) {
-              console.error('The number of Page Labels does not match ' + 'the number of pages in the document.');
-              return;
-            }
-            // Ignore page labels that correspond to standard page numbering.
-            while (i < numLabels && labels[i] === (i + 1).toString()) {
-              i++;
-            }
-            if (i === numLabels) {
-              return;
-            }
-            pdfViewer.setPageLabels(labels);
-            pdfThumbnailViewer.setPageLabels(labels);
-            self.hasPageLabels = true;
-            self._updateUIToolbar({ resetNumPages: true });
-          });
-          pagesPromise.then(function () {
-            if (self.supportsPrinting) {
-              pdfDocument.getJavaScript().then(function (javaScript) {
-                if (javaScript.length) {
-                  console.warn('Warning: JavaScript is not supported');
-                  self.fallback(pdfjsLib.UNSUPPORTED_FEATURES.javaScript);
-                }
-                // Hack to support auto printing.
-                var regex = /\bprint\s*\(/;
-                for (var i = 0, ii = javaScript.length; i < ii; i++) {
-                  var js = javaScript[i];
-                  if (js && regex.test(js)) {
-                    setTimeout(function () {
-                      window.print();
-                    });
-                    return;
-                  }
-                }
-              });
-            }
-          });
-          Promise.all([
-            onePageRendered,
-            this.animationStartedPromise
-          ]).then(function () {
-            pdfDocument.getOutline().then(function (outline) {
-              self.pdfOutlineViewer.render({ outline: outline });
-            });
-            pdfDocument.getAttachments().then(function (attachments) {
-              self.pdfAttachmentViewer.render({ attachments: attachments });
-            });
-          });
-          pdfDocument.getMetadata().then(function (data) {
-            var info = data.info, metadata = data.metadata;
-            self.documentInfo = info;
-            self.metadata = metadata;
-            // Provides some basic debug information
-            console.log('PDF ' + pdfDocument.fingerprint + ' [' + info.PDFFormatVersion + ' ' + (info.Producer || '-').trim() + ' / ' + (info.Creator || '-').trim() + ']' + ' (PDF.js: ' + (pdfjsLib.version || '-') + (!pdfjsLib.PDFJS.disableWebGL ? ' [WebGL]' : '') + ')');
-            var pdfTitle;
-            if (metadata && metadata.has('dc:title')) {
-              var title = metadata.get('dc:title');
-              // Ghostscript sometimes return 'Untitled', sets the title to 'Untitled'
-              if (title !== 'Untitled') {
-                pdfTitle = title;
-              }
-            }
-            if (!pdfTitle && info && info['Title']) {
-              pdfTitle = info['Title'];
-            }
-            if (pdfTitle) {
-              self.setTitle(pdfTitle + ' - ' + document.title);
-            }
-            if (info.IsAcroFormPresent) {
-              console.warn('Warning: AcroForm/XFA is not supported');
-              self.fallback(pdfjsLib.UNSUPPORTED_FEATURES.forms);
-            }
-            var versionId = String(info.PDFFormatVersion).slice(-1) | 0;
-            var generatorId = 0;
-            var KNOWN_GENERATORS = [
-              'acrobat distiller',
-              'acrobat pdfwriter',
-              'adobe livecycle',
-              'adobe pdf library',
-              'adobe photoshop',
-              'ghostscript',
-              'tcpdf',
-              'cairo',
-              'dvipdfm',
-              'dvips',
-              'pdftex',
-              'pdfkit',
-              'itext',
-              'prince',
-              'quarkxpress',
-              'mac os x',
-              'microsoft',
-              'openoffice',
-              'oracle',
-              'luradocument',
-              'pdf-xchange',
-              'antenna house',
-              'aspose.cells',
-              'fpdf'
-            ];
-            if (info.Producer) {
-              KNOWN_GENERATORS.some(function (generator, s, i) {
-                if (generator.indexOf(s) < 0) {
-                  return false;
-                }
-                generatorId = i + 1;
-                return true;
-              }.bind(null, info.Producer.toLowerCase()));
-            }
-            var formType = !info.IsAcroFormPresent ? null : info.IsXFAPresent ? 'xfa' : 'acroform';
-            self.externalServices.reportTelemetry({
-              type: 'documentInfo',
-              version: versionId,
-              generator: generatorId,
-              formType: formType
-            });
-          });
-        },
-        setInitialView: function pdfViewSetInitialView(storedHash, options) {
-          var scale = options && options.scale;
-          var sidebarView = options && options.sidebarView;
-          this.isInitialViewSet = true;
-          this.pdfSidebar.setInitialView(this.preferenceSidebarViewOnLoad || sidebarView | 0);
-          if (this.initialDestination) {
-            this.pdfLinkService.navigateTo(this.initialDestination);
-            this.initialDestination = null;
-          } else if (this.initialBookmark) {
-            this.pdfLinkService.setHash(this.initialBookmark);
-            this.pdfHistory.push({ hash: this.initialBookmark }, true);
-            this.initialBookmark = null;
-          } else if (storedHash) {
-            this.pdfLinkService.setHash(storedHash);
-          } else if (scale) {
-            this.pdfViewer.currentScaleValue = scale;
-            this.page = 1;
-          }
-          if (!this.pdfViewer.currentScaleValue) {
-            // Scale was not initialized: invalid bookmark or scale was not specified.
-            // Setting the default one.
-            this.pdfViewer.currentScaleValue = DEFAULT_SCALE_VALUE;
-          }
-        },
-        cleanup: function pdfViewCleanup() {
-          if (!this.pdfDocument) {
-            return;
-          }
-          // run cleanup when document is loaded
-          this.pdfViewer.cleanup();
-          this.pdfThumbnailViewer.cleanup();
-          this.pdfDocument.cleanup();
-        },
-        forceRendering: function pdfViewForceRendering() {
-          this.pdfRenderingQueue.printing = this.printing;
-          this.pdfRenderingQueue.isThumbnailViewEnabled = this.pdfSidebar.isThumbnailViewVisible;
-          this.pdfRenderingQueue.renderHighestPriority();
-        },
-        beforePrint: function pdfViewSetupBeforePrint() {
-          if (this.printService) {
-            // There is no way to suppress beforePrint/afterPrint events,
-            // but PDFPrintService may generate double events -- this will ignore
-            // the second event that will be coming from native window.print().
-            return;
-          }
-          if (!this.supportsPrinting) {
-            var printMessage = mozL10n.get('printing_not_supported', null, 'Warning: Printing is not fully supported by this browser.');
-            this.error(printMessage);
-            return;
-          }
-          // The beforePrint is a sync method and we need to know layout before
-          // returning from this method. Ensure that we can get sizes of the pages.
-          if (!this.pdfViewer.pageViewsReady) {
-            var notReadyMessage = mozL10n.get('printing_not_ready', null, 'Warning: The PDF is not fully loaded for printing.');
-            window.alert(notReadyMessage);
-            return;
-          }
-          var pagesOverview = this.pdfViewer.getPagesOverview();
-          var printContainer = this.appConfig.printContainer;
-          var printService = PDFPrintServiceFactory.instance.createPrintService(this.pdfDocument, pagesOverview, printContainer);
-          this.printService = printService;
-          this.forceRendering();
-          printService.layout();
-          this.externalServices.reportTelemetry({ type: 'print' });
-        },
-        // Whether all pages of the PDF have the same width and height.
-        get hasEqualPageSizes() {
-          var firstPage = this.pdfViewer.getPageView(0);
-          for (var i = 1, ii = this.pagesCount; i < ii; ++i) {
-            var pageView = this.pdfViewer.getPageView(i);
-            if (pageView.width !== firstPage.width || pageView.height !== firstPage.height) {
-              return false;
-            }
-          }
-          return true;
-        },
-        afterPrint: function pdfViewSetupAfterPrint() {
-          if (this.printService) {
-            this.printService.destroy();
-            this.printService = null;
-          }
-          this.forceRendering();
-        },
-        rotatePages: function pdfViewRotatePages(delta) {
-          var pageNumber = this.page;
-          this.pageRotation = (this.pageRotation + 360 + delta) % 360;
-          this.pdfViewer.pagesRotation = this.pageRotation;
-          this.pdfThumbnailViewer.pagesRotation = this.pageRotation;
-          this.forceRendering();
-          this.pdfViewer.currentPageNumber = pageNumber;
-        },
-        requestPresentationMode: function pdfViewRequestPresentationMode() {
-          if (!this.pdfPresentationMode) {
-            return;
-          }
-          this.pdfPresentationMode.request();
-        },
-        /**
-         * @typedef UpdateUIToolbarParameters
-         * @property {number} pageNumber
-         * @property {string} pageLabel
-         * @property {string} scaleValue
-         * @property {number} scale
-         * @property {boolean} resetNumPages
-         */
-        /**
-         * @param {Object} UpdateUIToolbarParameters
-         * @private
-         */
-        _updateUIToolbar: function (params) {
-          function selectScaleOption(value, scale) {
-            var options = toolbarConfig.scaleSelect.options;
-            var predefinedValueFound = false;
-            for (var i = 0, ii = options.length; i < ii; i++) {
-              var option = options[i];
-              if (option.value !== value) {
-                option.selected = false;
-                continue;
-              }
-              option.selected = true;
-              predefinedValueFound = true;
-            }
-            if (!predefinedValueFound) {
-              var customScale = Math.round(scale * 10000) / 100;
-              toolbarConfig.customScaleOption.textContent = mozL10n.get('page_scale_percent', { scale: customScale }, '{{scale}}%');
-              toolbarConfig.customScaleOption.selected = true;
-            }
-          }
-          var pageNumber = params.pageNumber || this.pdfViewer.currentPageNumber;
-          var scaleValue = (params.scaleValue || params.scale || this.pdfViewer.currentScaleValue || DEFAULT_SCALE_VALUE).toString();
-          var scale = params.scale || this.pdfViewer.currentScale;
-          var resetNumPages = params.resetNumPages || false;
-          var toolbarConfig = this.appConfig.toolbar;
-          var pagesCount = this.pagesCount;
-          if (resetNumPages) {
-            if (this.hasPageLabels) {
-              toolbarConfig.pageNumber.type = 'text';
-            } else {
-              toolbarConfig.pageNumber.type = 'number';
-              toolbarConfig.numPages.textContent = mozL10n.get('of_pages', { pagesCount: pagesCount }, 'of {{pagesCount}}');
-            }
-            toolbarConfig.pageNumber.max = pagesCount;
-          }
-          if (this.hasPageLabels) {
-            toolbarConfig.pageNumber.value = params.pageLabel || this.pdfViewer.currentPageLabel;
-            toolbarConfig.numPages.textContent = mozL10n.get('page_of_pages', {
-              pageNumber: pageNumber,
-              pagesCount: pagesCount
-            }, '({{pageNumber}} of {{pagesCount}})');
-          } else {
-            toolbarConfig.pageNumber.value = pageNumber;
-          }
-          toolbarConfig.previous.disabled = pageNumber <= 1;
-          toolbarConfig.next.disabled = pageNumber >= pagesCount;
-          toolbarConfig.firstPage.disabled = pageNumber <= 1;
-          toolbarConfig.lastPage.disabled = pageNumber >= pagesCount;
-          toolbarConfig.zoomOut.disabled = scale <= MIN_SCALE;
-          toolbarConfig.zoomIn.disabled = scale >= MAX_SCALE;
-          selectScaleOption(scaleValue, scale);
-        },
-        bindEvents: function pdfViewBindEvents() {
-          var eventBus = this.eventBus;
-          eventBus.on('resize', webViewerResize);
-          eventBus.on('localized', webViewerLocalized);
-          eventBus.on('hashchange', webViewerHashchange);
-          eventBus.on('beforeprint', this.beforePrint.bind(this));
-          eventBus.on('afterprint', this.afterPrint.bind(this));
-          eventBus.on('pagerendered', webViewerPageRendered);
-          eventBus.on('textlayerrendered', webViewerTextLayerRendered);
-          eventBus.on('updateviewarea', webViewerUpdateViewarea);
-          eventBus.on('pagechanging', webViewerPageChanging);
-          eventBus.on('scalechanging', webViewerScaleChanging);
-          eventBus.on('sidebarviewchanged', webViewerSidebarViewChanged);
-          eventBus.on('pagemode', webViewerPageMode);
-          eventBus.on('namedaction', webViewerNamedAction);
-          eventBus.on('presentationmodechanged', webViewerPresentationModeChanged);
-          eventBus.on('presentationmode', webViewerPresentationMode);
-          eventBus.on('openfile', webViewerOpenFile);
-          eventBus.on('print', webViewerPrint);
-          eventBus.on('download', webViewerDownload);
-          eventBus.on('firstpage', webViewerFirstPage);
-          eventBus.on('lastpage', webViewerLastPage);
-          eventBus.on('rotatecw', webViewerRotateCw);
-          eventBus.on('rotateccw', webViewerRotateCcw);
-          eventBus.on('documentproperties', webViewerDocumentProperties);
-          eventBus.on('find', webViewerFind);
-          eventBus.on('findfromurlhash', webViewerFindFromUrlHash);
-        }
-      };
-      var validateFileURL;
-      function loadAndEnablePDFBug(enabledTabs) {
-        return new Promise(function (resolve, reject) {
-          var appConfig = PDFViewerApplication.appConfig;
-          var script = document.createElement('script');
-          script.src = appConfig.debuggerScriptPath;
-          script.onload = function () {
-            PDFBug.enable(enabledTabs);
-            PDFBug.init(pdfjsLib, appConfig.mainContainer);
-            resolve();
-          };
-          script.onerror = function () {
-            reject(new Error('Cannot load debugger at ' + script.src));
-          };
-          (document.getElementsByTagName('head')[0] || document.body).appendChild(script);
-        });
-      }
-      function webViewerInitialized() {
-        var file;
-        file = window.location.href.split('#')[0];
-        var waitForBeforeOpening = [];
-        var appConfig = PDFViewerApplication.appConfig;
-        appConfig.toolbar.openFile.setAttribute('hidden', 'true');
-        appConfig.secondaryToolbar.openFileButton.setAttribute('hidden', 'true');
-        var PDFJS = pdfjsLib.PDFJS;
-        if (PDFViewerApplication.preferencePdfBugEnabled) {
-          // Special debugging flags in the hash section of the URL.
-          var hash = document.location.hash.substring(1);
-          var hashParams = parseQueryString(hash);
-          if ('disableworker' in hashParams) {
-            PDFJS.disableWorker = hashParams['disableworker'] === 'true';
-          }
-          if ('disablerange' in hashParams) {
-            PDFJS.disableRange = hashParams['disablerange'] === 'true';
-          }
-          if ('disablestream' in hashParams) {
-            PDFJS.disableStream = hashParams['disablestream'] === 'true';
-          }
-          if ('disableautofetch' in hashParams) {
-            PDFJS.disableAutoFetch = hashParams['disableautofetch'] === 'true';
-          }
-          if ('disablefontface' in hashParams) {
-            PDFJS.disableFontFace = hashParams['disablefontface'] === 'true';
-          }
-          if ('disablehistory' in hashParams) {
-            PDFJS.disableHistory = hashParams['disablehistory'] === 'true';
-          }
-          if ('webgl' in hashParams) {
-            PDFJS.disableWebGL = hashParams['webgl'] !== 'true';
-          }
-          if ('useonlycsszoom' in hashParams) {
-            PDFJS.useOnlyCssZoom = hashParams['useonlycsszoom'] === 'true';
-          }
-          if ('verbosity' in hashParams) {
-            PDFJS.verbosity = hashParams['verbosity'] | 0;
-          }
-          if ('ignorecurrentpositiononzoom' in hashParams) {
-            PDFJS.ignoreCurrentPositionOnZoom = hashParams['ignorecurrentpositiononzoom'] === 'true';
-          }
-          if ('textlayer' in hashParams) {
-            switch (hashParams['textlayer']) {
-            case 'off':
-              PDFJS.disableTextLayer = true;
-              break;
-            case 'visible':
-            case 'shadow':
-            case 'hover':
-              var viewer = appConfig.viewerContainer;
-              viewer.classList.add('textLayer-' + hashParams['textlayer']);
-              break;
-            }
-          }
-          if ('pdfbug' in hashParams) {
-            PDFJS.pdfBug = true;
-            var pdfBug = hashParams['pdfbug'];
-            var enabled = pdfBug.split(',');
-            waitForBeforeOpening.push(loadAndEnablePDFBug(enabled));
-          }
-        }
-        if (!PDFViewerApplication.supportsDocumentFonts) {
-          PDFJS.disableFontFace = true;
-          console.warn(mozL10n.get('web_fonts_disabled', null, 'Web fonts are disabled: unable to use embedded PDF fonts.'));
-        }
-        if (!PDFViewerApplication.supportsPrinting) {
-          appConfig.toolbar.print.classList.add('hidden');
-          appConfig.secondaryToolbar.printButton.classList.add('hidden');
-        }
-        if (!PDFViewerApplication.supportsFullscreen) {
-          appConfig.toolbar.presentationModeButton.classList.add('hidden');
-          appConfig.secondaryToolbar.presentationModeButton.classList.add('hidden');
-        }
-        if (PDFViewerApplication.supportsIntegratedFind) {
-          appConfig.toolbar.viewFind.classList.add('hidden');
-        }
-        // Suppress context menus for some controls
-        appConfig.toolbar.scaleSelect.oncontextmenu = noContextMenuHandler;
-        appConfig.sidebar.mainContainer.addEventListener('transitionend', function (e) {
-          if (e.target === /* mainContainer */
-            this) {
-            PDFViewerApplication.eventBus.dispatch('resize');
-          }
-        }, true);
-        appConfig.sidebar.toggleButton.addEventListener('click', function () {
-          PDFViewerApplication.pdfSidebar.toggle();
-        });
-        appConfig.toolbar.previous.addEventListener('click', function () {
-          PDFViewerApplication.page--;
-        });
-        appConfig.toolbar.next.addEventListener('click', function () {
-          PDFViewerApplication.page++;
-        });
-        appConfig.toolbar.zoomIn.addEventListener('click', function () {
-          PDFViewerApplication.zoomIn();
-        });
-        appConfig.toolbar.zoomOut.addEventListener('click', function () {
-          PDFViewerApplication.zoomOut();
-        });
-        appConfig.toolbar.pageNumber.addEventListener('click', function () {
-          this.select();
-        });
-        appConfig.toolbar.pageNumber.addEventListener('change', function () {
-          var pdfViewer = PDFViewerApplication.pdfViewer;
-          pdfViewer.currentPageLabel = this.value;
-          // Ensure that the page number input displays the correct value, even if the
-          // value entered by the user was invalid (e.g. a floating point number).
-          if (this.value !== pdfViewer.currentPageNumber.toString() && this.value !== pdfViewer.currentPageLabel) {
-            PDFViewerApplication._updateUIToolbar({});
-          }
-        });
-        appConfig.toolbar.scaleSelect.addEventListener('change', function () {
-          if (this.value === 'custom') {
-            return;
-          }
-          PDFViewerApplication.pdfViewer.currentScaleValue = this.value;
-        });
-        appConfig.toolbar.presentationModeButton.addEventListener('click', function (e) {
-          PDFViewerApplication.eventBus.dispatch('presentationmode');
-        });
-        appConfig.toolbar.openFile.addEventListener('click', function (e) {
-          PDFViewerApplication.eventBus.dispatch('openfile');
-        });
-        appConfig.toolbar.print.addEventListener('click', function (e) {
-          PDFViewerApplication.eventBus.dispatch('print');
-        });
-        appConfig.toolbar.download.addEventListener('click', function (e) {
-          PDFViewerApplication.eventBus.dispatch('download');
-        });
-        Promise.all(waitForBeforeOpening).then(function () {
-          webViewerOpenFileViaURL(file);
-        }).catch(function (reason) {
-          PDFViewerApplication.error(mozL10n.get('loading_error', null, 'An error occurred while opening.'), reason);
-        });
-      }
-      var webViewerOpenFileViaURL;
-      webViewerOpenFileViaURL = function webViewerOpenFileViaURL(file) {
-        PDFViewerApplication.setTitleUsingUrl(file);
-        PDFViewerApplication.initPassiveLoading();
-      };
-      function webViewerPageRendered(e) {
-        var pageNumber = e.pageNumber;
-        var pageIndex = pageNumber - 1;
-        var pageView = PDFViewerApplication.pdfViewer.getPageView(pageIndex);
-        // If the page is still visible when it has finished rendering,
-        // ensure that the page number input loading indicator is hidden.
-        if (pageNumber === PDFViewerApplication.page) {
-          var pageNumberInput = PDFViewerApplication.appConfig.toolbar.pageNumber;
-          pageNumberInput.classList.remove(PAGE_NUMBER_LOADING_INDICATOR);
-        }
-        // Prevent errors in the edge-case where the PDF document is removed *before*
-        // the 'pagerendered' event handler is invoked.
-        if (!pageView) {
-          return;
-        }
-        // Use the rendered page to set the corresponding thumbnail image.
-        if (PDFViewerApplication.pdfSidebar.isThumbnailViewVisible) {
-          var thumbnailView = PDFViewerApplication.pdfThumbnailViewer.getThumbnail(pageIndex);
-          thumbnailView.setImage(pageView);
-        }
-        if (pdfjsLib.PDFJS.pdfBug && Stats.enabled && pageView.stats) {
-          Stats.add(pageNumber, pageView.stats);
-        }
-        if (pageView.error) {
-          PDFViewerApplication.error(mozL10n.get('rendering_error', null, 'An error occurred while rendering the page.'), pageView.error);
-        }
-        PDFViewerApplication.externalServices.reportTelemetry({ type: 'pageInfo' });
-        // It is a good time to report stream and font types.
-        PDFViewerApplication.pdfDocument.getStats().then(function (stats) {
-          PDFViewerApplication.externalServices.reportTelemetry({
-            type: 'documentStats',
-            stats: stats
-          });
-        });
-      }
-      function webViewerTextLayerRendered(e) {
-        if (e.numTextDivs > 0 && !PDFViewerApplication.supportsDocumentColors) {
-          console.error(mozL10n.get('document_colors_not_allowed', null, 'PDF documents are not allowed to use their own colors: ' + '\'Allow pages to choose their own colors\' ' + 'is deactivated in the browser.'));
-          PDFViewerApplication.fallback();
-        }
-      }
-      function webViewerPageMode(e) {
-        if (!PDFViewerApplication.initialized) {
-          return;
-        }
-        // Handle the 'pagemode' hash parameter, see also `PDFLinkService_setHash`.
-        var mode = e.mode, view;
-        switch (mode) {
-        case 'thumbs':
-          view = SidebarView.THUMBS;
-          break;
-        case 'bookmarks':
-        case 'outline':
-          view = SidebarView.OUTLINE;
-          break;
-        case 'attachments':
-          view = SidebarView.ATTACHMENTS;
-          break;
-        case 'none':
-          view = SidebarView.NONE;
-          break;
-        default:
-          console.error('Invalid "pagemode" hash parameter: ' + mode);
-          return;
-        }
-        PDFViewerApplication.pdfSidebar.switchView(view, /* forceOpen = */
-        true);
-      }
-      function webViewerNamedAction(e) {
-        if (!PDFViewerApplication.initialized) {
-          return;
-        }
-        // Processing couple of named actions that might be useful.
-        // See also PDFLinkService.executeNamedAction
-        var action = e.action;
-        switch (action) {
-        case 'GoToPage':
-          PDFViewerApplication.appConfig.toolbar.pageNumber.select();
-          break;
-        case 'Find':
-          if (!PDFViewerApplication.supportsIntegratedFind) {
-            PDFViewerApplication.findBar.toggle();
-          }
-          break;
-        }
-      }
-      function webViewerPresentationModeChanged(e) {
-        var active = e.active;
-        var switchInProgress = e.switchInProgress;
-        PDFViewerApplication.pdfViewer.presentationModeState = switchInProgress ? PresentationModeState.CHANGING : active ? PresentationModeState.FULLSCREEN : PresentationModeState.NORMAL;
-      }
-      function webViewerSidebarViewChanged(e) {
-        if (!PDFViewerApplication.initialized) {
-          return;
-        }
-        PDFViewerApplication.pdfRenderingQueue.isThumbnailViewEnabled = PDFViewerApplication.pdfSidebar.isThumbnailViewVisible;
-        var store = PDFViewerApplication.store;
-        if (!store || !PDFViewerApplication.isInitialViewSet) {
-          // Only update the storage when the document has been loaded *and* rendered.
-          return;
-        }
-        store.initializedPromise.then(function () {
-          store.set('sidebarView', e.view).catch(function () {
-          });
-        });
-      }
-      function webViewerUpdateViewarea(e) {
-        if (!PDFViewerApplication.initialized) {
-          return;
-        }
-        var location = e.location, store = PDFViewerApplication.store;
-        if (store) {
-          store.initializedPromise.then(function () {
-            store.setMultiple({
-              'exists': true,
-              'page': location.pageNumber,
-              'zoom': location.scale,
-              'scrollLeft': location.left,
-              'scrollTop': location.top
-            }).catch(function () {
-            });
-          });
-        }
-        var href = PDFViewerApplication.pdfLinkService.getAnchorUrl(location.pdfOpenParams);
-        PDFViewerApplication.appConfig.toolbar.viewBookmark.href = href;
-        PDFViewerApplication.appConfig.secondaryToolbar.viewBookmarkButton.href = href;
-        // Update the current bookmark in the browsing history.
-        PDFViewerApplication.pdfHistory.updateCurrentBookmark(location.pdfOpenParams, location.pageNumber);
-        // Show/hide the loading indicator in the page number input element.
-        var pageNumberInput = PDFViewerApplication.appConfig.toolbar.pageNumber;
-        var currentPage = PDFViewerApplication.pdfViewer.getPageView(PDFViewerApplication.page - 1);
-        if (currentPage.renderingState === RenderingStates.FINISHED) {
-          pageNumberInput.classList.remove(PAGE_NUMBER_LOADING_INDICATOR);
-        } else {
-          pageNumberInput.classList.add(PAGE_NUMBER_LOADING_INDICATOR);
-        }
-      }
-      window.addEventListener('resize', function webViewerResize(evt) {
-        if (!PDFViewerApplication.eventBus) {
-          return;
-        }
-        PDFViewerApplication.eventBus.dispatch('resize');
-      });
-      function webViewerResize() {
-        if (PDFViewerApplication.initialized) {
-          var currentScaleValue = PDFViewerApplication.pdfViewer.currentScaleValue;
-          if (currentScaleValue === 'auto' || currentScaleValue === 'page-fit' || currentScaleValue === 'page-width') {
-            // Note: the scale is constant for 'page-actual'.
-            PDFViewerApplication.pdfViewer.currentScaleValue = currentScaleValue;
-          } else if (!currentScaleValue) {
-            // Normally this shouldn't happen, but if the scale wasn't initialized
-            // we set it to the default value in order to prevent any issues.
-            // (E.g. the document being rendered with the wrong scale on load.)
-            PDFViewerApplication.pdfViewer.currentScaleValue = DEFAULT_SCALE_VALUE;
-          }
-          PDFViewerApplication.pdfViewer.update();
-        }
-      }
-      window.addEventListener('hashchange', function webViewerHashchange(evt) {
-        var hash = document.location.hash.substring(1);
-        PDFViewerApplication.eventBus.dispatch('hashchange', { hash: hash });
-      });
-      function webViewerHashchange(e) {
-        if (PDFViewerApplication.pdfHistory.isHashChangeUnlocked) {
-          var hash = e.hash;
-          if (!hash) {
-            return;
-          }
-          if (!PDFViewerApplication.isInitialViewSet) {
-            PDFViewerApplication.initialBookmark = hash;
-          } else {
-            PDFViewerApplication.pdfLinkService.setHash(hash);
-          }
-        }
-      }
-      var webViewerFileInputChange;
-      window.addEventListener('localized', function localized(evt) {
-        PDFViewerApplication.eventBus.dispatch('localized');
-      });
-      function webViewerLocalized() {
-        document.getElementsByTagName('html')[0].dir = mozL10n.getDirection();
-        PDFViewerApplication.animationStartedPromise.then(function () {
-          // Adjust the width of the zoom box to fit the content.
-          // Note: If the window is narrow enough that the zoom box is not visible,
-          //       we temporarily show it to be able to adjust its width.
-          var container = PDFViewerApplication.appConfig.toolbar.scaleSelectContainer;
-          if (container.clientWidth === 0) {
-            container.setAttribute('style', 'display: inherit;');
-          }
-          if (container.clientWidth > 0) {
-            var select = PDFViewerApplication.appConfig.toolbar.scaleSelect;
-            select.setAttribute('style', 'min-width: inherit;');
-            var width = select.clientWidth + SCALE_SELECT_CONTAINER_PADDING;
-            select.setAttribute('style', 'min-width: ' + (width + SCALE_SELECT_PADDING) + 'px;');
-            container.setAttribute('style', 'min-width: ' + width + 'px; ' + 'max-width: ' + width + 'px;');
-          }
-        });
-      }
-      function webViewerPresentationMode() {
-        PDFViewerApplication.requestPresentationMode();
-      }
-      function webViewerOpenFile() {
-        var openFileInputName = PDFViewerApplication.appConfig.openFileInputName;
-        document.getElementById(openFileInputName).click();
-      }
-      function webViewerPrint() {
-        window.print();
-      }
-      function webViewerDownload() {
-        PDFViewerApplication.download();
-      }
-      function webViewerFirstPage() {
-        if (PDFViewerApplication.pdfDocument) {
-          PDFViewerApplication.page = 1;
-        }
-      }
-      function webViewerLastPage() {
-        if (PDFViewerApplication.pdfDocument) {
-          PDFViewerApplication.page = PDFViewerApplication.pagesCount;
-        }
-      }
-      function webViewerRotateCw() {
-        PDFViewerApplication.rotatePages(90);
-      }
-      function webViewerRotateCcw() {
-        PDFViewerApplication.rotatePages(-90);
-      }
-      function webViewerDocumentProperties() {
-        PDFViewerApplication.pdfDocumentProperties.open();
-      }
-      function webViewerFind(e) {
-        PDFViewerApplication.findController.executeCommand('find' + e.type, {
-          query: e.query,
-          phraseSearch: e.phraseSearch,
-          caseSensitive: e.caseSensitive,
-          highlightAll: e.highlightAll,
-          findPrevious: e.findPrevious
-        });
-      }
-      function webViewerFindFromUrlHash(e) {
-        PDFViewerApplication.findController.executeCommand('find', {
-          query: e.query,
-          phraseSearch: e.phraseSearch,
-          caseSensitive: false,
-          highlightAll: true,
-          findPrevious: false
-        });
-      }
-      function webViewerScaleChanging(e) {
-        PDFViewerApplication._updateUIToolbar({
-          scaleValue: e.presetValue,
-          scale: e.scale
-        });
-        if (!PDFViewerApplication.initialized) {
-          return;
-        }
-        PDFViewerApplication.pdfViewer.update();
-      }
-      function webViewerPageChanging(e) {
-        var page = e.pageNumber;
-        PDFViewerApplication._updateUIToolbar({
-          pageNumber: page,
-          pageLabel: e.pageLabel
-        });
-        if (PDFViewerApplication.pdfSidebar.isThumbnailViewVisible) {
-          PDFViewerApplication.pdfThumbnailViewer.scrollThumbnailIntoView(page);
-        }
-        // we need to update stats
-        if (pdfjsLib.PDFJS.pdfBug && Stats.enabled) {
-          var pageView = PDFViewerApplication.pdfViewer.getPageView(page - 1);
-          if (pageView.stats) {
-            Stats.add(page, pageView.stats);
-          }
-        }
-      }
-      var zoomDisabled = false, zoomDisabledTimeout;
-      function handleMouseWheel(evt) {
-        var pdfViewer = PDFViewerApplication.pdfViewer;
-        if (!pdfViewer || pdfViewer.isInPresentationMode) {
-          return;
-        }
-        if (evt.ctrlKey || evt.metaKey) {
-          var support = PDFViewerApplication.supportedMouseWheelZoomModifierKeys;
-          if (evt.ctrlKey && !support.ctrlKey || evt.metaKey && !support.metaKey) {
-            return;
-          }
-          // Only zoom the pages, not the entire viewer.
-          evt.preventDefault();
-          // NOTE: this check must be placed *after* preventDefault.
-          if (zoomDisabled) {
-            return;
-          }
-          var previousScale = pdfViewer.currentScale;
-          var delta = normalizeWheelEventDelta(evt);
-          var MOUSE_WHEEL_DELTA_PER_PAGE_SCALE = 3.0;
-          var ticks = delta * MOUSE_WHEEL_DELTA_PER_PAGE_SCALE;
-          if (ticks < 0) {
-            PDFViewerApplication.zoomOut(-ticks);
-          } else {
-            PDFViewerApplication.zoomIn(ticks);
-          }
-          var currentScale = pdfViewer.currentScale;
-          if (previousScale !== currentScale) {
-            // After scaling the page via zoomIn/zoomOut, the position of the upper-
-            // left corner is restored. When the mouse wheel is used, the position
-            // under the cursor should be restored instead.
-            var scaleCorrectionFactor = currentScale / previousScale - 1;
-            var rect = pdfViewer.container.getBoundingClientRect();
-            var dx = evt.clientX - rect.left;
-            var dy = evt.clientY - rect.top;
-            pdfViewer.container.scrollLeft += dx * scaleCorrectionFactor;
-            pdfViewer.container.scrollTop += dy * scaleCorrectionFactor;
-          }
-        } else {
-          zoomDisabled = true;
-          clearTimeout(zoomDisabledTimeout);
-          zoomDisabledTimeout = setTimeout(function () {
-            zoomDisabled = false;
-          }, 1000);
-        }
-      }
-      window.addEventListener('wheel', handleMouseWheel);
-      window.addEventListener('click', function click(evt) {
-        if (!PDFViewerApplication.secondaryToolbar.isOpen) {
-          return;
-        }
-        var appConfig = PDFViewerApplication.appConfig;
-        if (PDFViewerApplication.pdfViewer.containsElement(evt.target) || appConfig.toolbar.container.contains(evt.target) && evt.target !== appConfig.secondaryToolbar.toggleButton) {
-          PDFViewerApplication.secondaryToolbar.close();
-        }
-      }, true);
-      window.addEventListener('keydown', function keydown(evt) {
-        if (OverlayManager.active) {
-          return;
-        }
-        var handled = false;
-        var cmd = (evt.ctrlKey ? 1 : 0) | (evt.altKey ? 2 : 0) | (evt.shiftKey ? 4 : 0) | (evt.metaKey ? 8 : 0);
-        var pdfViewer = PDFViewerApplication.pdfViewer;
-        var isViewerInPresentationMode = pdfViewer && pdfViewer.isInPresentationMode;
-        // First, handle the key bindings that are independent whether an input
-        // control is selected or not.
-        if (cmd === 1 || cmd === 8 || cmd === 5 || cmd === 12) {
-          // either CTRL or META key with optional SHIFT.
-          switch (evt.keyCode) {
-          case 70:
-            // f
-            if (!PDFViewerApplication.supportsIntegratedFind) {
-              PDFViewerApplication.findBar.open();
-              handled = true;
-            }
-            break;
-          case 71:
-            // g
-            if (!PDFViewerApplication.supportsIntegratedFind) {
-              var findState = PDFViewerApplication.findController.state;
-              if (findState) {
-                PDFViewerApplication.findController.executeCommand('findagain', {
-                  query: findState.query,
-                  phraseSearch: findState.phraseSearch,
-                  caseSensitive: findState.caseSensitive,
-                  highlightAll: findState.highlightAll,
-                  findPrevious: cmd === 5 || cmd === 12
-                });
-              }
-              handled = true;
-            }
-            break;
-          case 61:
-          // FF/Mac '='
-          case 107:
-          // FF '+' and '='
-          case 187:
-          // Chrome '+'
-          case 171:
-            // FF with German keyboard
-            if (!isViewerInPresentationMode) {
-              PDFViewerApplication.zoomIn();
-            }
-            handled = true;
-            break;
-          case 173:
-          // FF/Mac '-'
-          case 109:
-          // FF '-'
-          case 189:
-            // Chrome '-'
-            if (!isViewerInPresentationMode) {
-              PDFViewerApplication.zoomOut();
-            }
-            handled = true;
-            break;
-          case 48:
-          // '0'
-          case 96:
-            // '0' on Numpad of Swedish keyboard
-            if (!isViewerInPresentationMode) {
-              // keeping it unhandled (to restore page zoom to 100%)
-              setTimeout(function () {
-                // ... and resetting the scale after browser adjusts its scale
-                pdfViewer.currentScaleValue = DEFAULT_SCALE_VALUE;
-              });
-              handled = false;
-            }
-            break;
-          }
-        }
-        // CTRL+ALT or Option+Command
-        if (cmd === 3 || cmd === 10) {
-          switch (evt.keyCode) {
-          case 80:
-            // p
-            PDFViewerApplication.requestPresentationMode();
-            handled = true;
-            break;
-          case 71:
-            // g
-            // focuses input#pageNumber field
-            PDFViewerApplication.appConfig.toolbar.pageNumber.select();
-            handled = true;
-            break;
-          }
-        }
-        if (handled) {
-          evt.preventDefault();
-          return;
-        }
-        // Some shortcuts should not get handled if a control/input element
-        // is selected.
-        var curElement = document.activeElement || document.querySelector(':focus');
-        var curElementTagName = curElement && curElement.tagName.toUpperCase();
-        if (curElementTagName === 'INPUT' || curElementTagName === 'TEXTAREA' || curElementTagName === 'SELECT') {
-          // Make sure that the secondary toolbar is closed when Escape is pressed.
-          if (evt.keyCode !== 27) {
-            // 'Esc'
-            return;
-          }
-        }
-        var ensureViewerFocused = false;
-        if (cmd === 0) {
-          // no control key pressed at all.
-          switch (evt.keyCode) {
-          case 38:
-          // up arrow
-          case 33:
-          // pg up
-          case 8:
-            // backspace
-            if (!isViewerInPresentationMode && pdfViewer.currentScaleValue !== 'page-fit') {
-              break;
-            }
-          /* in presentation mode */
-          case 37:
-            // left arrow
-            // horizontal scrolling using arrow keys
-            if (pdfViewer.isHorizontalScrollbarEnabled) {
-              break;
-            }
-          case 75:
-          // 'k'
-          case 80:
-            // 'p'
-            if (PDFViewerApplication.page > 1) {
-              PDFViewerApplication.page--;
-            }
-            handled = true;
-            break;
-          case 27:
-            // esc key
-            if (PDFViewerApplication.secondaryToolbar.isOpen) {
-              PDFViewerApplication.secondaryToolbar.close();
-              handled = true;
-            }
-            if (!PDFViewerApplication.supportsIntegratedFind && PDFViewerApplication.findBar.opened) {
-              PDFViewerApplication.findBar.close();
-              handled = true;
-            }
-            break;
-          case 40:
-          // down arrow
-          case 34:
-          // pg down
-          case 32:
-            // spacebar
-            if (!isViewerInPresentationMode && pdfViewer.currentScaleValue !== 'page-fit') {
-              break;
-            }
-          case 39:
-            // right arrow
-            // horizontal scrolling using arrow keys
-            if (pdfViewer.isHorizontalScrollbarEnabled) {
-              break;
-            }
-          case 74:
-          // 'j'
-          case 78:
-            // 'n'
-            if (PDFViewerApplication.page < PDFViewerApplication.pagesCount) {
-              PDFViewerApplication.page++;
-            }
-            handled = true;
-            break;
-          case 36:
-            // home
-            if (isViewerInPresentationMode || PDFViewerApplication.page > 1) {
-              PDFViewerApplication.page = 1;
-              handled = true;
-              ensureViewerFocused = true;
-            }
-            break;
-          case 35:
-            // end
-            if (isViewerInPresentationMode || PDFViewerApplication.page < PDFViewerApplication.pagesCount) {
-              PDFViewerApplication.page = PDFViewerApplication.pagesCount;
-              handled = true;
-              ensureViewerFocused = true;
-            }
-            break;
-          case 72:
-            // 'h'
-            if (!isViewerInPresentationMode) {
-              PDFViewerApplication.handTool.toggle();
-            }
-            break;
-          case 82:
-            // 'r'
-            PDFViewerApplication.rotatePages(90);
-            break;
-          }
-        }
-        if (cmd === 4) {
-          // shift-key
-          switch (evt.keyCode) {
-          case 32:
-            // spacebar
-            if (!isViewerInPresentationMode && pdfViewer.currentScaleValue !== 'page-fit') {
-              break;
-            }
-            if (PDFViewerApplication.page > 1) {
-              PDFViewerApplication.page--;
-            }
-            handled = true;
-            break;
-          case 82:
-            // 'r'
-            PDFViewerApplication.rotatePages(-90);
-            break;
-          }
-        }
-        if (!handled && !isViewerInPresentationMode) {
-          // 33=Page Up  34=Page Down  35=End    36=Home
-          // 37=Left     38=Up         39=Right  40=Down
-          // 32=Spacebar
-          if (evt.keyCode >= 33 && evt.keyCode <= 40 || evt.keyCode === 32 && curElementTagName !== 'BUTTON') {
-            ensureViewerFocused = true;
-          }
-        }
-        if (cmd === 2) {
-          // alt-key
-          switch (evt.keyCode) {
-          case 37:
-            // left arrow
-            if (isViewerInPresentationMode) {
-              PDFViewerApplication.pdfHistory.back();
-              handled = true;
-            }
-            break;
-          case 39:
-            // right arrow
-            if (isViewerInPresentationMode) {
-              PDFViewerApplication.pdfHistory.forward();
-              handled = true;
-            }
-            break;
-          }
-        }
-        if (ensureViewerFocused && !pdfViewer.containsElement(curElement)) {
-          // The page container is not focused, but a page navigation key has been
-          // pressed. Change the focus to the viewer container to make sure that
-          // navigation by keyboard works as expected.
-          pdfViewer.focus();
-        }
-        if (handled) {
-          evt.preventDefault();
-        }
-      });
-      window.addEventListener('beforeprint', function beforePrint(evt) {
-        PDFViewerApplication.eventBus.dispatch('beforeprint');
-      });
-      window.addEventListener('afterprint', function afterPrint(evt) {
-        PDFViewerApplication.eventBus.dispatch('afterprint');
-      });
-      (function animationStartedClosure() {
-        // The offsetParent is not set until the pdf.js iframe or object is visible.
-        // Waiting for first animation.
-        PDFViewerApplication.animationStartedPromise = new Promise(function (resolve) {
-          window.requestAnimationFrame(resolve);
-        });
-      }());
-      /* Abstract factory for the print service. */
-      var PDFPrintServiceFactory = {
-        instance: {
-          supportsPrinting: false,
-          createPrintService: function () {
-            throw new Error('Not implemented: createPrintService');
-          }
-        }
-      };
-      exports.PDFViewerApplication = PDFViewerApplication;
-      exports.DefaultExernalServices = DefaultExernalServices;
-      exports.PDFPrintServiceFactory = PDFPrintServiceFactory;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebFirefoxPrintService = {}, root.pdfjsWebUIUtils, root.pdfjsWebApp, root.pdfjsWebPDFJS);
-    }(this, function (exports, uiUtils, app, pdfjsLib) {
-      var CSS_UNITS = uiUtils.CSS_UNITS;
-      var PDFPrintServiceFactory = app.PDFPrintServiceFactory;
-      // Creates a placeholder with div and canvas with right size for the page.
-      function composePage(pdfDocument, pageNumber, size, printContainer) {
-        var canvas = document.createElement('canvas');
-        // The size of the canvas in pixels for printing.
-        var PRINT_RESOLUTION = 150;
-        var PRINT_UNITS = PRINT_RESOLUTION / 72.0;
-        canvas.width = Math.floor(size.width * PRINT_UNITS);
-        canvas.height = Math.floor(size.height * PRINT_UNITS);
-        // The physical size of the canvas as specified by the PDF document.
-        canvas.style.width = Math.floor(size.width * CSS_UNITS) + 'px';
-        canvas.style.height = Math.floor(size.height * CSS_UNITS) + 'px';
-        var canvasWrapper = document.createElement('div');
-        canvasWrapper.appendChild(canvas);
-        printContainer.appendChild(canvasWrapper);
-        canvas.mozPrintCallback = function (obj) {
-          // Printing/rendering the page.
-          var ctx = obj.context;
-          ctx.save();
-          ctx.fillStyle = 'rgb(255, 255, 255)';
-          ctx.fillRect(0, 0, canvas.width, canvas.height);
-          ctx.restore();
-          pdfDocument.getPage(pageNumber).then(function (pdfPage) {
-            var renderContext = {
-              canvasContext: ctx,
-              transform: [
-                PRINT_UNITS,
-                0,
-                0,
-                PRINT_UNITS,
-                0,
-                0
-              ],
-              viewport: pdfPage.getViewport(1),
-              intent: 'print'
-            };
-            return pdfPage.render(renderContext).promise;
-          }).then(function () {
-            // Tell the printEngine that rendering this canvas/page has finished.
-            obj.done();
-          }, function (error) {
-            console.error(error);
-            // Tell the printEngine that rendering this canvas/page has failed.
-            // This will make the print process stop.
-            if ('abort' in obj) {
-              obj.abort();
-            } else {
-              obj.done();
-            }
-          });
-        };
-      }
-      function FirefoxPrintService(pdfDocument, pagesOverview, printContainer) {
-        this.pdfDocument = pdfDocument;
-        this.pagesOverview = pagesOverview;
-        this.printContainer = printContainer;
-      }
-      FirefoxPrintService.prototype = {
-        layout: function () {
-          var pdfDocument = this.pdfDocument;
-          var printContainer = this.printContainer;
-          var body = document.querySelector('body');
-          body.setAttribute('data-pdfjsprinting', true);
-          for (var i = 0, ii = this.pagesOverview.length; i < ii; ++i) {
-            composePage(pdfDocument, i + 1, this.pagesOverview[i], printContainer);
-          }
-        },
-        destroy: function () {
-          this.printContainer.textContent = '';
-        }
-      };
-      PDFPrintServiceFactory.instance = {
-        get supportsPrinting() {
-          var canvas = document.createElement('canvas');
-          var value = 'mozPrintCallback' in canvas;
-          return pdfjsLib.shadow(this, 'supportsPrinting', value);
-        },
-        createPrintService: function (pdfDocument, pagesOverview, printContainer) {
-          return new FirefoxPrintService(pdfDocument, pagesOverview, printContainer);
-        }
-      };
-      exports.FirefoxPrintService = FirefoxPrintService;
-    }));
-    (function (root, factory) {
-      factory(root.pdfjsWebFirefoxCom = {}, root.pdfjsWebPreferences, root.pdfjsWebApp, root.pdfjsWebPDFJS);
-    }(this, function (exports, preferences, app, pdfjsLib) {
-      var Preferences = preferences.Preferences;
-      var PDFViewerApplication = app.PDFViewerApplication;
-      var FirefoxCom = function FirefoxComClosure() {
-        return {
-          /**
-           * Creates an event that the extension is listening for and will
-           * synchronously respond to.
-           * NOTE: It is reccomended to use request() instead since one day we may not
-           * be able to synchronously reply.
-           * @param {String} action The action to trigger.
-           * @param {String} data Optional data to send.
-           * @return {*} The response.
-           */
-          requestSync: function (action, data) {
-            var request = document.createTextNode('');
-            document.documentElement.appendChild(request);
-            var sender = document.createEvent('CustomEvent');
-            sender.initCustomEvent('pdf.js.message', true, false, {
-              action: action,
-              data: data,
-              sync: true
-            });
-            request.dispatchEvent(sender);
-            var response = sender.detail.response;
-            document.documentElement.removeChild(request);
-            return response;
-          },
-          /**
-           * Creates an event that the extension is listening for and will
-           * asynchronously respond by calling the callback.
-           * @param {String} action The action to trigger.
-           * @param {String} data Optional data to send.
-           * @param {Function} callback Optional response callback that will be called
-           * with one data argument.
-           */
-          request: function (action, data, callback) {
-            var request = document.createTextNode('');
-            if (callback) {
-              document.addEventListener('pdf.js.response', function listener(event) {
-                var node = event.target;
-                var response = event.detail.response;
-                document.documentElement.removeChild(node);
-                document.removeEventListener('pdf.js.response', listener, false);
-                return callback(response);
-              }, false);
-            }
-            document.documentElement.appendChild(request);
-            var sender = document.createEvent('CustomEvent');
-            sender.initCustomEvent('pdf.js.message', true, false, {
-              action: action,
-              data: data,
-              sync: false,
-              responseExpected: !!callback
-            });
-            return request.dispatchEvent(sender);
-          }
-        };
-      }();
-      var DownloadManager = function DownloadManagerClosure() {
-        function DownloadManager() {
-        }
-        DownloadManager.prototype = {
-          downloadUrl: function DownloadManager_downloadUrl(url, filename) {
-            FirefoxCom.request('download', {
-              originalUrl: url,
-              filename: filename
-            });
-          },
-          downloadData: function DownloadManager_downloadData(data, filename, contentType) {
-            var blobUrl = pdfjsLib.createObjectURL(data, contentType, false);
-            FirefoxCom.request('download', {
-              blobUrl: blobUrl,
-              originalUrl: blobUrl,
-              filename: filename,
-              isAttachment: true
-            });
-          },
-          download: function DownloadManager_download(blob, url, filename) {
-            var blobUrl = window.URL.createObjectURL(blob);
-            FirefoxCom.request('download', {
-              blobUrl: blobUrl,
-              originalUrl: url,
-              filename: filename
-            }, function response(err) {
-              if (err && this.onerror) {
-                this.onerror(err);
-              }
-              window.URL.revokeObjectURL(blobUrl);
-            }.bind(this));
-          }
-        };
-        return DownloadManager;
-      }();
-      Preferences._writeToStorage = function (prefObj) {
-        return new Promise(function (resolve) {
-          FirefoxCom.request('setPreferences', prefObj, resolve);
-        });
-      };
-      Preferences._readFromStorage = function (prefObj) {
-        return new Promise(function (resolve) {
-          FirefoxCom.request('getPreferences', prefObj, function (prefStr) {
-            var readPrefs = JSON.parse(prefStr);
-            resolve(readPrefs);
-          });
-        });
-      };
-      (function listenFindEvents() {
-        var events = [
-          'find',
-          'findagain',
-          'findhighlightallchange',
-          'findcasesensitivitychange'
-        ];
-        var handleEvent = function (evt) {
-          if (!PDFViewerApplication.initialized) {
-            return;
-          }
-          PDFViewerApplication.eventBus.dispatch('find', {
-            source: window,
-            type: evt.type.substring('find'.length),
-            query: evt.detail.query,
-            phraseSearch: true,
-            caseSensitive: !!evt.detail.caseSensitive,
-            highlightAll: !!evt.detail.highlightAll,
-            findPrevious: !!evt.detail.findPrevious
-          });
-        }.bind(this);
-        for (var i = 0, len = events.length; i < len; i++) {
-          window.addEventListener(events[i], handleEvent);
-        }
-      }());
-      function FirefoxComDataRangeTransport(length, initialData) {
-        pdfjsLib.PDFDataRangeTransport.call(this, length, initialData);
-      }
-      FirefoxComDataRangeTransport.prototype = Object.create(pdfjsLib.PDFDataRangeTransport.prototype);
-      FirefoxComDataRangeTransport.prototype.requestDataRange = function FirefoxComDataRangeTransport_requestDataRange(begin, end) {
-        FirefoxCom.request('requestDataRange', {
-          begin: begin,
-          end: end
-        });
-      };
-      FirefoxComDataRangeTransport.prototype.abort = function FirefoxComDataRangeTransport_abort() {
-        // Sync call to ensure abort is really started.
-        FirefoxCom.requestSync('abortLoading', null);
-      };
-      PDFViewerApplication.externalServices = {
-        updateFindControlState: function (data) {
-          FirefoxCom.request('updateFindControlState', data);
-        },
-        initPassiveLoading: function (callbacks) {
-          var pdfDataRangeTransport;
-          window.addEventListener('message', function windowMessage(e) {
-            if (e.source !== null) {
-              // The message MUST originate from Chrome code.
-              console.warn('Rejected untrusted message from ' + e.origin);
-              return;
-            }
-            var args = e.data;
-            if (typeof args !== 'object' || !('pdfjsLoadAction' in args)) {
-              return;
-            }
-            switch (args.pdfjsLoadAction) {
-            case 'supportsRangedLoading':
-              pdfDataRangeTransport = new FirefoxComDataRangeTransport(args.length, args.data);
-              callbacks.onOpenWithTransport(args.pdfUrl, args.length, pdfDataRangeTransport);
-              break;
-            case 'range':
-              pdfDataRangeTransport.onDataRange(args.begin, args.chunk);
-              break;
-            case 'rangeProgress':
-              pdfDataRangeTransport.onDataProgress(args.loaded);
-              break;
-            case 'progressiveRead':
-              pdfDataRangeTransport.onDataProgressiveRead(args.chunk);
-              break;
-            case 'progress':
-              callbacks.onProgress(args.loaded, args.total);
-              break;
-            case 'complete':
-              if (!args.data) {
-                callbacks.onError(args.errorCode);
-                break;
-              }
-              callbacks.onOpenWithData(args.data);
-              break;
-            }
-          });
-          FirefoxCom.requestSync('initPassiveLoading', null);
-        },
-        fallback: function (data, callback) {
-          FirefoxCom.request('fallback', data, callback);
-        },
-        reportTelemetry: function (data) {
-          FirefoxCom.request('reportTelemetry', JSON.stringify(data));
-        },
-        createDownloadManager: function () {
-          return new DownloadManager();
-        },
-        get supportsIntegratedFind() {
-          var support = FirefoxCom.requestSync('supportsIntegratedFind');
-          return pdfjsLib.shadow(this, 'supportsIntegratedFind', support);
-        },
-        get supportsDocumentFonts() {
-          var support = FirefoxCom.requestSync('supportsDocumentFonts');
-          return pdfjsLib.shadow(this, 'supportsDocumentFonts', support);
-        },
-        get supportsDocumentColors() {
-          var support = FirefoxCom.requestSync('supportsDocumentColors');
-          return pdfjsLib.shadow(this, 'supportsDocumentColors', support);
-        },
-        get supportedMouseWheelZoomModifierKeys() {
-          var support = FirefoxCom.requestSync('supportedMouseWheelZoomModifierKeys');
-          return pdfjsLib.shadow(this, 'supportedMouseWheelZoomModifierKeys', support);
-        }
-      };
-      //// l10n.js for Firefox extension expects services to be set.
-      document.mozL10n.setExternalLocalizerServices({
-        getLocale: function () {
-          return FirefoxCom.requestSync('getLocale', null);
-        },
-        getStrings: function (key) {
-          return FirefoxCom.requestSync('getStrings', key);
-        }
-      });
-      exports.DownloadManager = DownloadManager;
-      exports.FirefoxCom = FirefoxCom;
-    }));
-  }.call(pdfjsWebLibs));
-}
-{
-  // FIXME the l10n.js file in the Firefox extension needs global FirefoxCom.
-  window.FirefoxCom = pdfjsWebLibs.pdfjsWebFirefoxCom.FirefoxCom;
-}
-function getViewerConfiguration() {
-  return {
-    appContainer: document.body,
-    mainContainer: document.getElementById('viewerContainer'),
-    viewerContainer: document.getElementById('viewer'),
-    eventBus: null,
-    // using global event bus with DOM events
-    toolbar: {
-      container: document.getElementById('toolbarViewer'),
-      numPages: document.getElementById('numPages'),
-      pageNumber: document.getElementById('pageNumber'),
-      scaleSelectContainer: document.getElementById('scaleSelectContainer'),
-      scaleSelect: document.getElementById('scaleSelect'),
-      customScaleOption: document.getElementById('customScaleOption'),
-      previous: document.getElementById('previous'),
-      next: document.getElementById('next'),
-      firstPage: document.getElementById('firstPage'),
-      lastPage: document.getElementById('lastPage'),
-      zoomIn: document.getElementById('zoomIn'),
-      zoomOut: document.getElementById('zoomOut'),
-      viewFind: document.getElementById('viewFind'),
-      openFile: document.getElementById('openFile'),
-      print: document.getElementById('print'),
-      presentationModeButton: document.getElementById('presentationMode'),
-      download: document.getElementById('download'),
-      viewBookmark: document.getElementById('viewBookmark')
-    },
-    secondaryToolbar: {
-      toolbar: document.getElementById('secondaryToolbar'),
-      toggleButton: document.getElementById('secondaryToolbarToggle'),
-      toolbarButtonContainer: document.getElementById('secondaryToolbarButtonContainer'),
-      presentationModeButton: document.getElementById('secondaryPresentationMode'),
-      openFileButton: document.getElementById('secondaryOpenFile'),
-      printButton: document.getElementById('secondaryPrint'),
-      downloadButton: document.getElementById('secondaryDownload'),
-      viewBookmarkButton: document.getElementById('secondaryViewBookmark'),
-      firstPageButton: document.getElementById('firstPage'),
-      lastPageButton: document.getElementById('lastPage'),
-      pageRotateCwButton: document.getElementById('pageRotateCw'),
-      pageRotateCcwButton: document.getElementById('pageRotateCcw'),
-      toggleHandToolButton: document.getElementById('toggleHandTool'),
-      documentPropertiesButton: document.getElementById('documentProperties')
-    },
-    fullscreen: {
-      contextFirstPage: document.getElementById('contextFirstPage'),
-      contextLastPage: document.getElementById('contextLastPage'),
-      contextPageRotateCw: document.getElementById('contextPageRotateCw'),
-      contextPageRotateCcw: document.getElementById('contextPageRotateCcw')
-    },
-    sidebar: {
-      // Divs (and sidebar button)
-      mainContainer: document.getElementById('mainContainer'),
-      outerContainer: document.getElementById('outerContainer'),
-      toggleButton: document.getElementById('sidebarToggle'),
-      // Buttons
-      thumbnailButton: document.getElementById('viewThumbnail'),
-      outlineButton: document.getElementById('viewOutline'),
-      attachmentsButton: document.getElementById('viewAttachments'),
-      // Views
-      thumbnailView: document.getElementById('thumbnailView'),
-      outlineView: document.getElementById('outlineView'),
-      attachmentsView: document.getElementById('attachmentsView')
-    },
-    findBar: {
-      bar: document.getElementById('findbar'),
-      toggleButton: document.getElementById('viewFind'),
-      findField: document.getElementById('findInput'),
-      highlightAllCheckbox: document.getElementById('findHighlightAll'),
-      caseSensitiveCheckbox: document.getElementById('findMatchCase'),
-      findMsg: document.getElementById('findMsg'),
-      findResultsCount: document.getElementById('findResultsCount'),
-      findStatusIcon: document.getElementById('findStatusIcon'),
-      findPreviousButton: document.getElementById('findPrevious'),
-      findNextButton: document.getElementById('findNext')
-    },
-    passwordOverlay: {
-      overlayName: 'passwordOverlay',
-      container: document.getElementById('passwordOverlay'),
-      label: document.getElementById('passwordText'),
-      input: document.getElementById('password'),
-      submitButton: document.getElementById('passwordSubmit'),
-      cancelButton: document.getElementById('passwordCancel')
-    },
-    documentProperties: {
-      overlayName: 'documentPropertiesOverlay',
-      container: document.getElementById('documentPropertiesOverlay'),
-      closeButton: document.getElementById('documentPropertiesClose'),
-      fields: {
-        'fileName': document.getElementById('fileNameField'),
-        'fileSize': document.getElementById('fileSizeField'),
-        'title': document.getElementById('titleField'),
-        'author': document.getElementById('authorField'),
-        'subject': document.getElementById('subjectField'),
-        'keywords': document.getElementById('keywordsField'),
-        'creationDate': document.getElementById('creationDateField'),
-        'modificationDate': document.getElementById('modificationDateField'),
-        'creator': document.getElementById('creatorField'),
-        'producer': document.getElementById('producerField'),
-        'version': document.getElementById('versionField'),
-        'pageCount': document.getElementById('pageCountField')
-      }
-    },
-    errorWrapper: {
-      container: document.getElementById('errorWrapper'),
-      errorMessage: document.getElementById('errorMessage'),
-      closeButton: document.getElementById('errorClose'),
-      errorMoreInfo: document.getElementById('errorMoreInfo'),
-      moreInfoButton: document.getElementById('errorShowMore'),
-      lessInfoButton: document.getElementById('errorShowLess')
-    },
-    printContainer: document.getElementById('printContainer'),
-    openFileInputName: 'fileInput',
-    debuggerScriptPath: './debugger.js'
-  };
-}
-function webViewerLoad() {
-  var config = getViewerConfiguration();
-  window.PDFViewerApplication = pdfjsWebLibs.pdfjsWebApp.PDFViewerApplication;
-  pdfjsWebLibs.pdfjsWebApp.PDFViewerApplication.run(config);
-}
-document.addEventListener('DOMContentLoaded', webViewerLoad, true);
\ No newline at end of file