diff options
Diffstat (limited to 'browser/extensions/pdfjs/content/web/debugger.js')
| -rw-r--r-- | browser/extensions/pdfjs/content/web/debugger.js | 616 |
1 files changed, 616 insertions, 0 deletions
diff --git a/browser/extensions/pdfjs/content/web/debugger.js b/browser/extensions/pdfjs/content/web/debugger.js new file mode 100644 index 000000000..8a049f4c6 --- /dev/null +++ b/browser/extensions/pdfjs/content/web/debugger.js @@ -0,0 +1,616 @@ +/* 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'); + } + } + } + }; +})(); |