Issue #303 Part 1: Move basilisk files from /browser to /application/basilisk

1 files changed, 8671 insertions, 0 deletions

diff --git a/application/basilisk/extensions/pdfjs/content/web/viewer.js b/application/basilisk/extensions/pdfjs/content/web/viewer.js
new file mode 100644
index 000000000..35fef2cd0
--- /dev/null
+++ b/application/basilisk/extensions/pdfjs/content/web/viewer.js
@@ -0,0 +1,8671 @@
+/* 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