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+/* Copyright 2012 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+'use strict';
+
+var FontInspector = (function FontInspectorClosure() {
+ var fonts;
+ var active = false;
+ var fontAttribute = 'data-font-name';
+ function removeSelection() {
+ var divs = document.querySelectorAll('div[' + fontAttribute + ']');
+ for (var i = 0, ii = divs.length; i < ii; ++i) {
+ var div = divs[i];
+ div.className = '';
+ }
+ }
+ function resetSelection() {
+ var divs = document.querySelectorAll('div[' + fontAttribute + ']');
+ for (var i = 0, ii = divs.length; i < ii; ++i) {
+ var div = divs[i];
+ div.className = 'debuggerHideText';
+ }
+ }
+ function selectFont(fontName, show) {
+ var divs = document.querySelectorAll('div[' + fontAttribute + '=' +
+ fontName + ']');
+ for (var i = 0, ii = divs.length; i < ii; ++i) {
+ var div = divs[i];
+ div.className = show ? 'debuggerShowText' : 'debuggerHideText';
+ }
+ }
+ function textLayerClick(e) {
+ if (!e.target.dataset.fontName ||
+ e.target.tagName.toUpperCase() !== 'DIV') {
+ return;
+ }
+ var fontName = e.target.dataset.fontName;
+ var selects = document.getElementsByTagName('input');
+ for (var i = 0; i < selects.length; ++i) {
+ var select = selects[i];
+ if (select.dataset.fontName !== fontName) {
+ continue;
+ }
+ select.checked = !select.checked;
+ selectFont(fontName, select.checked);
+ select.scrollIntoView();
+ }
+ }
+ return {
+ // Properties/functions needed by PDFBug.
+ id: 'FontInspector',
+ name: 'Font Inspector',
+ panel: null,
+ manager: null,
+ init: function init(pdfjsLib) {
+ var panel = this.panel;
+ panel.setAttribute('style', 'padding: 5px;');
+ var tmp = document.createElement('button');
+ tmp.addEventListener('click', resetSelection);
+ tmp.textContent = 'Refresh';
+ panel.appendChild(tmp);
+
+ fonts = document.createElement('div');
+ panel.appendChild(fonts);
+ },
+ cleanup: function cleanup() {
+ fonts.textContent = '';
+ },
+ enabled: false,
+ get active() {
+ return active;
+ },
+ set active(value) {
+ active = value;
+ if (active) {
+ document.body.addEventListener('click', textLayerClick, true);
+ resetSelection();
+ } else {
+ document.body.removeEventListener('click', textLayerClick, true);
+ removeSelection();
+ }
+ },
+ // FontInspector specific functions.
+ fontAdded: function fontAdded(fontObj, url) {
+ function properties(obj, list) {
+ var moreInfo = document.createElement('table');
+ for (var i = 0; i < list.length; i++) {
+ var tr = document.createElement('tr');
+ var td1 = document.createElement('td');
+ td1.textContent = list[i];
+ tr.appendChild(td1);
+ var td2 = document.createElement('td');
+ td2.textContent = obj[list[i]].toString();
+ tr.appendChild(td2);
+ moreInfo.appendChild(tr);
+ }
+ return moreInfo;
+ }
+ var moreInfo = properties(fontObj, ['name', 'type']);
+ var fontName = fontObj.loadedName;
+ var font = document.createElement('div');
+ var name = document.createElement('span');
+ name.textContent = fontName;
+ var download = document.createElement('a');
+ if (url) {
+ url = /url\(['"]?([^\)"']+)/.exec(url);
+ download.href = url[1];
+ } else if (fontObj.data) {
+ url = URL.createObjectURL(new Blob([fontObj.data], {
+ type: fontObj.mimeType
+ }));
+ download.href = url;
+ }
+ download.textContent = 'Download';
+ var logIt = document.createElement('a');
+ logIt.href = '';
+ logIt.textContent = 'Log';
+ logIt.addEventListener('click', function(event) {
+ event.preventDefault();
+ console.log(fontObj);
+ });
+ var select = document.createElement('input');
+ select.setAttribute('type', 'checkbox');
+ select.dataset.fontName = fontName;
+ select.addEventListener('click', (function(select, fontName) {
+ return (function() {
+ selectFont(fontName, select.checked);
+ });
+ })(select, fontName));
+ font.appendChild(select);
+ font.appendChild(name);
+ font.appendChild(document.createTextNode(' '));
+ font.appendChild(download);
+ font.appendChild(document.createTextNode(' '));
+ font.appendChild(logIt);
+ font.appendChild(moreInfo);
+ fonts.appendChild(font);
+ // Somewhat of a hack, should probably add a hook for when the text layer
+ // is done rendering.
+ setTimeout(function() {
+ if (this.active) {
+ resetSelection();
+ }
+ }.bind(this), 2000);
+ }
+ };
+})();
+
+var opMap;
+
+// Manages all the page steppers.
+var StepperManager = (function StepperManagerClosure() {
+ var steppers = [];
+ var stepperDiv = null;
+ var stepperControls = null;
+ var stepperChooser = null;
+ var breakPoints = Object.create(null);
+ return {
+ // Properties/functions needed by PDFBug.
+ id: 'Stepper',
+ name: 'Stepper',
+ panel: null,
+ manager: null,
+ init: function init(pdfjsLib) {
+ var self = this;
+ this.panel.setAttribute('style', 'padding: 5px;');
+ stepperControls = document.createElement('div');
+ stepperChooser = document.createElement('select');
+ stepperChooser.addEventListener('change', function(event) {
+ self.selectStepper(this.value);
+ });
+ stepperControls.appendChild(stepperChooser);
+ stepperDiv = document.createElement('div');
+ this.panel.appendChild(stepperControls);
+ this.panel.appendChild(stepperDiv);
+ if (sessionStorage.getItem('pdfjsBreakPoints')) {
+ breakPoints = JSON.parse(sessionStorage.getItem('pdfjsBreakPoints'));
+ }
+
+ opMap = Object.create(null);
+ for (var key in pdfjsLib.OPS) {
+ opMap[pdfjsLib.OPS[key]] = key;
+ }
+ },
+ cleanup: function cleanup() {
+ stepperChooser.textContent = '';
+ stepperDiv.textContent = '';
+ steppers = [];
+ },
+ enabled: false,
+ active: false,
+ // Stepper specific functions.
+ create: function create(pageIndex) {
+ var debug = document.createElement('div');
+ debug.id = 'stepper' + pageIndex;
+ debug.setAttribute('hidden', true);
+ debug.className = 'stepper';
+ stepperDiv.appendChild(debug);
+ var b = document.createElement('option');
+ b.textContent = 'Page ' + (pageIndex + 1);
+ b.value = pageIndex;
+ stepperChooser.appendChild(b);
+ var initBreakPoints = breakPoints[pageIndex] || [];
+ var stepper = new Stepper(debug, pageIndex, initBreakPoints);
+ steppers.push(stepper);
+ if (steppers.length === 1) {
+ this.selectStepper(pageIndex, false);
+ }
+ return stepper;
+ },
+ selectStepper: function selectStepper(pageIndex, selectPanel) {
+ var i;
+ pageIndex = pageIndex | 0;
+ if (selectPanel) {
+ this.manager.selectPanel(this);
+ }
+ for (i = 0; i < steppers.length; ++i) {
+ var stepper = steppers[i];
+ if (stepper.pageIndex === pageIndex) {
+ stepper.panel.removeAttribute('hidden');
+ } else {
+ stepper.panel.setAttribute('hidden', true);
+ }
+ }
+ var options = stepperChooser.options;
+ for (i = 0; i < options.length; ++i) {
+ var option = options[i];
+ option.selected = (option.value | 0) === pageIndex;
+ }
+ },
+ saveBreakPoints: function saveBreakPoints(pageIndex, bps) {
+ breakPoints[pageIndex] = bps;
+ sessionStorage.setItem('pdfjsBreakPoints', JSON.stringify(breakPoints));
+ }
+ };
+})();
+
+// The stepper for each page's IRQueue.
+var Stepper = (function StepperClosure() {
+ // Shorter way to create element and optionally set textContent.
+ function c(tag, textContent) {
+ var d = document.createElement(tag);
+ if (textContent) {
+ d.textContent = textContent;
+ }
+ return d;
+ }
+
+ function simplifyArgs(args) {
+ if (typeof args === 'string') {
+ var MAX_STRING_LENGTH = 75;
+ return args.length <= MAX_STRING_LENGTH ? args :
+ args.substr(0, MAX_STRING_LENGTH) + '...';
+ }
+ if (typeof args !== 'object' || args === null) {
+ return args;
+ }
+ if ('length' in args) { // array
+ var simpleArgs = [], i, ii;
+ var MAX_ITEMS = 10;
+ for (i = 0, ii = Math.min(MAX_ITEMS, args.length); i < ii; i++) {
+ simpleArgs.push(simplifyArgs(args[i]));
+ }
+ if (i < args.length) {
+ simpleArgs.push('...');
+ }
+ return simpleArgs;
+ }
+ var simpleObj = {};
+ for (var key in args) {
+ simpleObj[key] = simplifyArgs(args[key]);
+ }
+ return simpleObj;
+ }
+
+ function Stepper(panel, pageIndex, initialBreakPoints) {
+ this.panel = panel;
+ this.breakPoint = 0;
+ this.nextBreakPoint = null;
+ this.pageIndex = pageIndex;
+ this.breakPoints = initialBreakPoints;
+ this.currentIdx = -1;
+ this.operatorListIdx = 0;
+ }
+ Stepper.prototype = {
+ init: function init(operatorList) {
+ var panel = this.panel;
+ var content = c('div', 'c=continue, s=step');
+ var table = c('table');
+ content.appendChild(table);
+ table.cellSpacing = 0;
+ var headerRow = c('tr');
+ table.appendChild(headerRow);
+ headerRow.appendChild(c('th', 'Break'));
+ headerRow.appendChild(c('th', 'Idx'));
+ headerRow.appendChild(c('th', 'fn'));
+ headerRow.appendChild(c('th', 'args'));
+ panel.appendChild(content);
+ this.table = table;
+ this.updateOperatorList(operatorList);
+ },
+ updateOperatorList: function updateOperatorList(operatorList) {
+ var self = this;
+
+ function cboxOnClick() {
+ var x = +this.dataset.idx;
+ if (this.checked) {
+ self.breakPoints.push(x);
+ } else {
+ self.breakPoints.splice(self.breakPoints.indexOf(x), 1);
+ }
+ StepperManager.saveBreakPoints(self.pageIndex, self.breakPoints);
+ }
+
+ var MAX_OPERATORS_COUNT = 15000;
+ if (this.operatorListIdx > MAX_OPERATORS_COUNT) {
+ return;
+ }
+
+ var chunk = document.createDocumentFragment();
+ var operatorsToDisplay = Math.min(MAX_OPERATORS_COUNT,
+ operatorList.fnArray.length);
+ for (var i = this.operatorListIdx; i < operatorsToDisplay; i++) {
+ var line = c('tr');
+ line.className = 'line';
+ line.dataset.idx = i;
+ chunk.appendChild(line);
+ var checked = this.breakPoints.indexOf(i) !== -1;
+ var args = operatorList.argsArray[i] || [];
+
+ var breakCell = c('td');
+ var cbox = c('input');
+ cbox.type = 'checkbox';
+ cbox.className = 'points';
+ cbox.checked = checked;
+ cbox.dataset.idx = i;
+ cbox.onclick = cboxOnClick;
+
+ breakCell.appendChild(cbox);
+ line.appendChild(breakCell);
+ line.appendChild(c('td', i.toString()));
+ var fn = opMap[operatorList.fnArray[i]];
+ var decArgs = args;
+ if (fn === 'showText') {
+ var glyphs = args[0];
+ var newArgs = [];
+ var str = [];
+ for (var j = 0; j < glyphs.length; j++) {
+ var glyph = glyphs[j];
+ if (typeof glyph === 'object' && glyph !== null) {
+ str.push(glyph.fontChar);
+ } else {
+ if (str.length > 0) {
+ newArgs.push(str.join(''));
+ str = [];
+ }
+ newArgs.push(glyph); // null or number
+ }
+ }
+ if (str.length > 0) {
+ newArgs.push(str.join(''));
+ }
+ decArgs = [newArgs];
+ }
+ line.appendChild(c('td', fn));
+ line.appendChild(c('td', JSON.stringify(simplifyArgs(decArgs))));
+ }
+ if (operatorsToDisplay < operatorList.fnArray.length) {
+ line = c('tr');
+ var lastCell = c('td', '...');
+ lastCell.colspan = 4;
+ chunk.appendChild(lastCell);
+ }
+ this.operatorListIdx = operatorList.fnArray.length;
+ this.table.appendChild(chunk);
+ },
+ getNextBreakPoint: function getNextBreakPoint() {
+ this.breakPoints.sort(function(a, b) { return a - b; });
+ for (var i = 0; i < this.breakPoints.length; i++) {
+ if (this.breakPoints[i] > this.currentIdx) {
+ return this.breakPoints[i];
+ }
+ }
+ return null;
+ },
+ breakIt: function breakIt(idx, callback) {
+ StepperManager.selectStepper(this.pageIndex, true);
+ var self = this;
+ var dom = document;
+ self.currentIdx = idx;
+ var listener = function(e) {
+ switch (e.keyCode) {
+ case 83: // step
+ dom.removeEventListener('keydown', listener, false);
+ self.nextBreakPoint = self.currentIdx + 1;
+ self.goTo(-1);
+ callback();
+ break;
+ case 67: // continue
+ dom.removeEventListener('keydown', listener, false);
+ var breakPoint = self.getNextBreakPoint();
+ self.nextBreakPoint = breakPoint;
+ self.goTo(-1);
+ callback();
+ break;
+ }
+ };
+ dom.addEventListener('keydown', listener, false);
+ self.goTo(idx);
+ },
+ goTo: function goTo(idx) {
+ var allRows = this.panel.getElementsByClassName('line');
+ for (var x = 0, xx = allRows.length; x < xx; ++x) {
+ var row = allRows[x];
+ if ((row.dataset.idx | 0) === idx) {
+ row.style.backgroundColor = 'rgb(251,250,207)';
+ row.scrollIntoView();
+ } else {
+ row.style.backgroundColor = null;
+ }
+ }
+ }
+ };
+ return Stepper;
+})();
+
+var Stats = (function Stats() {
+ var stats = [];
+ function clear(node) {
+ while (node.hasChildNodes()) {
+ node.removeChild(node.lastChild);
+ }
+ }
+ function getStatIndex(pageNumber) {
+ for (var i = 0, ii = stats.length; i < ii; ++i) {
+ if (stats[i].pageNumber === pageNumber) {
+ return i;
+ }
+ }
+ return false;
+ }
+ return {
+ // Properties/functions needed by PDFBug.
+ id: 'Stats',
+ name: 'Stats',
+ panel: null,
+ manager: null,
+ init: function init(pdfjsLib) {
+ this.panel.setAttribute('style', 'padding: 5px;');
+ pdfjsLib.PDFJS.enableStats = true;
+ },
+ enabled: false,
+ active: false,
+ // Stats specific functions.
+ add: function(pageNumber, stat) {
+ if (!stat) {
+ return;
+ }
+ var statsIndex = getStatIndex(pageNumber);
+ if (statsIndex !== false) {
+ var b = stats[statsIndex];
+ this.panel.removeChild(b.div);
+ stats.splice(statsIndex, 1);
+ }
+ var wrapper = document.createElement('div');
+ wrapper.className = 'stats';
+ var title = document.createElement('div');
+ title.className = 'title';
+ title.textContent = 'Page: ' + pageNumber;
+ var statsDiv = document.createElement('div');
+ statsDiv.textContent = stat.toString();
+ wrapper.appendChild(title);
+ wrapper.appendChild(statsDiv);
+ stats.push({ pageNumber: pageNumber, div: wrapper });
+ stats.sort(function(a, b) { return a.pageNumber - b.pageNumber; });
+ clear(this.panel);
+ for (var i = 0, ii = stats.length; i < ii; ++i) {
+ this.panel.appendChild(stats[i].div);
+ }
+ },
+ cleanup: function () {
+ stats = [];
+ clear(this.panel);
+ }
+ };
+})();
+
+// Manages all the debugging tools.
+var PDFBug = (function PDFBugClosure() {
+ var panelWidth = 300;
+ var buttons = [];
+ var activePanel = null;
+
+ return {
+ tools: [
+ FontInspector,
+ StepperManager,
+ Stats
+ ],
+ enable: function(ids) {
+ var all = false, tools = this.tools;
+ if (ids.length === 1 && ids[0] === 'all') {
+ all = true;
+ }
+ for (var i = 0; i < tools.length; ++i) {
+ var tool = tools[i];
+ if (all || ids.indexOf(tool.id) !== -1) {
+ tool.enabled = true;
+ }
+ }
+ if (!all) {
+ // Sort the tools by the order they are enabled.
+ tools.sort(function(a, b) {
+ var indexA = ids.indexOf(a.id);
+ indexA = indexA < 0 ? tools.length : indexA;
+ var indexB = ids.indexOf(b.id);
+ indexB = indexB < 0 ? tools.length : indexB;
+ return indexA - indexB;
+ });
+ }
+ },
+ init: function init(pdfjsLib, container) {
+ /*
+ * Basic Layout:
+ * PDFBug
+ * Controls
+ * Panels
+ * Panel
+ * Panel
+ * ...
+ */
+ var ui = document.createElement('div');
+ ui.id = 'PDFBug';
+
+ var controls = document.createElement('div');
+ controls.setAttribute('class', 'controls');
+ ui.appendChild(controls);
+
+ var panels = document.createElement('div');
+ panels.setAttribute('class', 'panels');
+ ui.appendChild(panels);
+
+ container.appendChild(ui);
+ container.style.right = panelWidth + 'px';
+
+ // Initialize all the debugging tools.
+ var tools = this.tools;
+ var self = this;
+ for (var i = 0; i < tools.length; ++i) {
+ var tool = tools[i];
+ var panel = document.createElement('div');
+ var panelButton = document.createElement('button');
+ panelButton.textContent = tool.name;
+ panelButton.addEventListener('click', (function(selected) {
+ return function(event) {
+ event.preventDefault();
+ self.selectPanel(selected);
+ };
+ })(i));
+ controls.appendChild(panelButton);
+ panels.appendChild(panel);
+ tool.panel = panel;
+ tool.manager = this;
+ if (tool.enabled) {
+ tool.init(pdfjsLib);
+ } else {
+ panel.textContent = tool.name + ' is disabled. To enable add ' +
+ ' "' + tool.id + '" to the pdfBug parameter ' +
+ 'and refresh (separate multiple by commas).';
+ }
+ buttons.push(panelButton);
+ }
+ this.selectPanel(0);
+ },
+ cleanup: function cleanup() {
+ for (var i = 0, ii = this.tools.length; i < ii; i++) {
+ if (this.tools[i].enabled) {
+ this.tools[i].cleanup();
+ }
+ }
+ },
+ selectPanel: function selectPanel(index) {
+ if (typeof index !== 'number') {
+ index = this.tools.indexOf(index);
+ }
+ if (index === activePanel) {
+ return;
+ }
+ activePanel = index;
+ var tools = this.tools;
+ for (var j = 0; j < tools.length; ++j) {
+ if (j === index) {
+ buttons[j].setAttribute('class', 'active');
+ tools[j].active = true;
+ tools[j].panel.removeAttribute('hidden');
+ } else {
+ buttons[j].setAttribute('class', '');
+ tools[j].active = false;
+ tools[j].panel.setAttribute('hidden', 'true');
+ }
+ }
+ }
+ };
+})();