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Diffstat (limited to 'application/basilisk/extensions/pdfjs/content/web/viewer.js')
| -rw-r--r-- | application/basilisk/extensions/pdfjs/content/web/viewer.js | 8671 |
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);
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