Replace unnecessary var self = this statements with arrow functions in web/app.js
Also replaces `var` with `let` in the functions/methods that are touched in the patch. Please note that this should be completely safe, for two separate reasons, since trying to access `let` in a scope where it's not defined is first of all a runtime error and second of all an ESLint error (thanks to the `no-undef` rule).
This commit is contained in:
Jonas Jenwald
parent
0dbc68a6d6
commit
240a3926f4
332
web/app.js
332
web/app.js
@ -258,131 +258,131 @@ var PDFViewerApplication = {
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* @private
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*/
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_initializeViewerComponents() {
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var self = this;
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var appConfig = this.appConfig;
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let appConfig = this.appConfig;
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return new Promise((resolve, reject) => {
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var eventBus = appConfig.eventBus || getGlobalEventBus();
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let eventBus = appConfig.eventBus || getGlobalEventBus();
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this.eventBus = eventBus;
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var pdfRenderingQueue = new PDFRenderingQueue();
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pdfRenderingQueue.onIdle = self.cleanup.bind(self);
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self.pdfRenderingQueue = pdfRenderingQueue;
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let pdfRenderingQueue = new PDFRenderingQueue();
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pdfRenderingQueue.onIdle = this.cleanup.bind(this);
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this.pdfRenderingQueue = pdfRenderingQueue;
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var pdfLinkService = new PDFLinkService({
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let pdfLinkService = new PDFLinkService({
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eventBus,
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});
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self.pdfLinkService = pdfLinkService;
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this.pdfLinkService = pdfLinkService;
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var downloadManager = self.externalServices.createDownloadManager();
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self.downloadManager = downloadManager;
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let downloadManager = this.externalServices.createDownloadManager();
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this.downloadManager = downloadManager;
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var container = appConfig.mainContainer;
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var viewer = appConfig.viewerContainer;
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self.pdfViewer = new PDFViewer({
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let container = appConfig.mainContainer;
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let viewer = appConfig.viewerContainer;
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this.pdfViewer = new PDFViewer({
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container,
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viewer,
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eventBus,
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renderingQueue: pdfRenderingQueue,
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linkService: pdfLinkService,
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downloadManager,
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renderer: self.viewerPrefs['renderer'],
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enhanceTextSelection: self.viewerPrefs['enhanceTextSelection'],
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renderInteractiveForms: self.viewerPrefs['renderInteractiveForms'],
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enablePrintAutoRotate: self.viewerPrefs['enablePrintAutoRotate'],
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renderer: this.viewerPrefs['renderer'],
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enhanceTextSelection: this.viewerPrefs['enhanceTextSelection'],
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renderInteractiveForms: this.viewerPrefs['renderInteractiveForms'],
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enablePrintAutoRotate: this.viewerPrefs['enablePrintAutoRotate'],
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});
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pdfRenderingQueue.setViewer(self.pdfViewer);
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pdfLinkService.setViewer(self.pdfViewer);
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pdfRenderingQueue.setViewer(this.pdfViewer);
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pdfLinkService.setViewer(this.pdfViewer);
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var thumbnailContainer = appConfig.sidebar.thumbnailView;
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self.pdfThumbnailViewer = new PDFThumbnailViewer({
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let thumbnailContainer = appConfig.sidebar.thumbnailView;
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this.pdfThumbnailViewer = new PDFThumbnailViewer({
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container: thumbnailContainer,
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renderingQueue: pdfRenderingQueue,
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linkService: pdfLinkService,
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});
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pdfRenderingQueue.setThumbnailViewer(self.pdfThumbnailViewer);
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pdfRenderingQueue.setThumbnailViewer(this.pdfThumbnailViewer);
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self.pdfHistory = new PDFHistory({
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this.pdfHistory = new PDFHistory({
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linkService: pdfLinkService,
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eventBus,
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});
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pdfLinkService.setHistory(self.pdfHistory);
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pdfLinkService.setHistory(this.pdfHistory);
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self.findController = new PDFFindController({
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pdfViewer: self.pdfViewer,
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this.findController = new PDFFindController({
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pdfViewer: this.pdfViewer,
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});
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self.findController.onUpdateResultsCount = function (matchCount) {
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if (self.supportsIntegratedFind) {
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this.findController.onUpdateResultsCount = (matchCount) => {
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if (this.supportsIntegratedFind) {
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return;
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}
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self.findBar.updateResultsCount(matchCount);
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this.findBar.updateResultsCount(matchCount);
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};
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self.findController.onUpdateState = function (state, previous,
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matchCount) {
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if (self.supportsIntegratedFind) {
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self.externalServices.updateFindControlState(
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{result: state, findPrevious: previous});
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this.findController.onUpdateState = (state, previous, matchCount) => {
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if (this.supportsIntegratedFind) {
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this.externalServices.updateFindControlState({
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result: state,
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findPrevious: previous,
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});
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} else {
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self.findBar.updateUIState(state, previous, matchCount);
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this.findBar.updateUIState(state, previous, matchCount);
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}
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};
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self.pdfViewer.setFindController(self.findController);
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this.pdfViewer.setFindController(this.findController);
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// FIXME better PDFFindBar constructor parameters
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var findBarConfig = Object.create(appConfig.findBar);
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findBarConfig.findController = self.findController;
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let findBarConfig = Object.create(appConfig.findBar);
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findBarConfig.findController = this.findController;
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findBarConfig.eventBus = eventBus;
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self.findBar = new PDFFindBar(findBarConfig);
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this.findBar = new PDFFindBar(findBarConfig);
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self.overlayManager = OverlayManager;
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this.overlayManager = OverlayManager;
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self.handTool = new HandTool({
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this.handTool = new HandTool({
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container,
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eventBus,
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preferences: this.preferences,
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});
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self.pdfDocumentProperties =
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this.pdfDocumentProperties =
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new PDFDocumentProperties(appConfig.documentProperties);
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self.toolbar = new Toolbar(appConfig.toolbar, container, eventBus);
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this.toolbar = new Toolbar(appConfig.toolbar, container, eventBus);
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self.secondaryToolbar =
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this.secondaryToolbar =
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new SecondaryToolbar(appConfig.secondaryToolbar, container, eventBus);
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if (self.supportsFullscreen) {
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self.pdfPresentationMode = new PDFPresentationMode({
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if (this.supportsFullscreen) {
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this.pdfPresentationMode = new PDFPresentationMode({
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container,
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viewer,
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pdfViewer: self.pdfViewer,
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pdfViewer: this.pdfViewer,
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eventBus,
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contextMenuItems: appConfig.fullscreen
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});
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}
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self.passwordPrompt = new PasswordPrompt(appConfig.passwordOverlay);
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this.passwordPrompt = new PasswordPrompt(appConfig.passwordOverlay);
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self.pdfOutlineViewer = new PDFOutlineViewer({
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this.pdfOutlineViewer = new PDFOutlineViewer({
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container: appConfig.sidebar.outlineView,
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eventBus,
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linkService: pdfLinkService,
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});
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self.pdfAttachmentViewer = new PDFAttachmentViewer({
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this.pdfAttachmentViewer = new PDFAttachmentViewer({
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container: appConfig.sidebar.attachmentsView,
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eventBus,
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downloadManager,
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});
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// FIXME better PDFSidebar constructor parameters
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var sidebarConfig = Object.create(appConfig.sidebar);
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sidebarConfig.pdfViewer = self.pdfViewer;
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sidebarConfig.pdfThumbnailViewer = self.pdfThumbnailViewer;
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sidebarConfig.pdfOutlineViewer = self.pdfOutlineViewer;
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let sidebarConfig = Object.create(appConfig.sidebar);
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sidebarConfig.pdfViewer = this.pdfViewer;
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sidebarConfig.pdfThumbnailViewer = this.pdfThumbnailViewer;
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sidebarConfig.pdfOutlineViewer = this.pdfOutlineViewer;
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sidebarConfig.eventBus = eventBus;
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self.pdfSidebar = new PDFSidebar(sidebarConfig);
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self.pdfSidebar.onToggled = self.forceRendering.bind(self);
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this.pdfSidebar = new PDFSidebar(sidebarConfig);
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this.pdfSidebar.onToggled = this.forceRendering.bind(this);
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resolve(undefined);
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});
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@ -590,7 +590,7 @@ var PDFViewerApplication = {
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* @returns {Promise} - Returns the promise, which is resolved when document
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* is opened.
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*/
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open: function pdfViewOpen(file, args) {
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open(file, args) {
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if ((typeof PDFJSDev === 'undefined' || PDFJSDev.test('GENERIC')) &&
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(arguments.length > 2 || typeof args === 'number')) {
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return Promise.reject(
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@ -606,7 +606,7 @@ var PDFViewerApplication = {
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});
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}
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var parameters = Object.create(null), scale;
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let parameters = Object.create(null), scale;
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if (typeof file === 'string') { // URL
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this.setTitleUsingUrl(file);
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parameters.url = file;
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@ -622,7 +622,7 @@ var PDFViewerApplication = {
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}
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if (args) {
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for (var prop in args) {
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for (let prop in args) {
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parameters[prop] = args[prop];
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}
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@ -634,54 +634,46 @@ var PDFViewerApplication = {
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}
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}
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var self = this;
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self.downloadComplete = false;
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this.downloadComplete = false;
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var loadingTask = getDocument(parameters);
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let loadingTask = getDocument(parameters);
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this.pdfLoadingTask = loadingTask;
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loadingTask.onPassword = function passwordNeeded(updateCallback, reason) {
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self.passwordPrompt.setUpdateCallback(updateCallback, reason);
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self.passwordPrompt.open();
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loadingTask.onPassword = (updateCallback, reason) => {
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this.passwordPrompt.setUpdateCallback(updateCallback, reason);
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this.passwordPrompt.open();
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};
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loadingTask.onProgress = function getDocumentProgress(progressData) {
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self.progress(progressData.loaded / progressData.total);
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loadingTask.onProgress = ({ loaded, total, }) => {
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this.progress(loaded / total);
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};
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// Listen for unsupported features to trigger the fallback UI.
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loadingTask.onUnsupportedFeature = this.fallback.bind(this);
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return loadingTask.promise.then(
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function getDocumentCallback(pdfDocument) {
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self.load(pdfDocument, scale);
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},
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function getDocumentError(exception) {
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var message = exception && exception.message;
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var loadingErrorMessage = mozL10n.get('loading_error', null,
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'An error occurred while loading the PDF.');
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return loadingTask.promise.then((pdfDocument) => {
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this.load(pdfDocument, scale);
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}, (exception) => {
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let message = exception && exception.message;
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let loadingErrorMessage = mozL10n.get('loading_error', null,
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'An error occurred while loading the PDF.');
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if (exception instanceof InvalidPDFException) {
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// change error message also for other builds
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loadingErrorMessage = mozL10n.get('invalid_file_error', null,
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'Invalid or corrupted PDF file.');
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} else if (exception instanceof MissingPDFException) {
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// special message for missing PDF's
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loadingErrorMessage = mozL10n.get('missing_file_error', null,
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'Missing PDF file.');
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} else if (exception instanceof UnexpectedResponseException) {
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loadingErrorMessage = mozL10n.get('unexpected_response_error', null,
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'Unexpected server response.');
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}
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var moreInfo = {
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message,
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};
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self.error(loadingErrorMessage, moreInfo);
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throw new Error(loadingErrorMessage);
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if (exception instanceof InvalidPDFException) {
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// change error message also for other builds
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loadingErrorMessage = mozL10n.get('invalid_file_error', null,
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'Invalid or corrupted PDF file.');
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} else if (exception instanceof MissingPDFException) {
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// special message for missing PDF's
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loadingErrorMessage = mozL10n.get('missing_file_error', null,
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'Missing PDF file.');
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} else if (exception instanceof UnexpectedResponseException) {
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loadingErrorMessage = mozL10n.get('unexpected_response_error', null,
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'Unexpected server response.');
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}
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);
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this.error(loadingErrorMessage, { message, });
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throw new Error(loadingErrorMessage);
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});
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},
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download: function pdfViewDownload() {
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@ -842,24 +834,26 @@ var PDFViewerApplication = {
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}
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},
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load: function pdfViewLoad(pdfDocument, scale) {
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var self = this;
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load(pdfDocument, scale) {
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scale = scale || UNKNOWN_SCALE;
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this.pdfDocument = pdfDocument;
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var downloadedPromise = pdfDocument.getDownloadInfo().then(function() {
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self.downloadComplete = true;
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self.loadingBar.hide();
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pdfDocument.getDownloadInfo().then(() => {
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this.downloadComplete = true;
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this.loadingBar.hide();
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firstPagePromise.then(() => {
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this.eventBus.dispatch('documentload', { source: this, });
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});
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});
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this.toolbar.setPagesCount(pdfDocument.numPages, false);
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this.secondaryToolbar.setPagesCount(pdfDocument.numPages);
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var id = this.documentFingerprint = pdfDocument.fingerprint;
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var store = this.store = new ViewHistory(id);
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let id = this.documentFingerprint = pdfDocument.fingerprint;
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let store = this.store = new ViewHistory(id);
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var baseDocumentUrl;
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let baseDocumentUrl;
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if (typeof PDFJSDev === 'undefined' || PDFJSDev.test('GENERIC')) {
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baseDocumentUrl = null;
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} else if (PDFJSDev.test('FIREFOX || MOZCENTRAL')) {
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@ -870,48 +864,44 @@ var PDFViewerApplication = {
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this.pdfLinkService.setDocument(pdfDocument, baseDocumentUrl);
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this.pdfDocumentProperties.setDocument(pdfDocument, this.url);
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var pdfViewer = this.pdfViewer;
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let pdfViewer = this.pdfViewer;
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pdfViewer.currentScale = scale;
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pdfViewer.setDocument(pdfDocument);
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var firstPagePromise = pdfViewer.firstPagePromise;
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var pagesPromise = pdfViewer.pagesPromise;
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var onePageRendered = pdfViewer.onePageRendered;
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let firstPagePromise = pdfViewer.firstPagePromise;
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let pagesPromise = pdfViewer.pagesPromise;
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let onePageRendered = pdfViewer.onePageRendered;
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this.pageRotation = 0;
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var pdfThumbnailViewer = this.pdfThumbnailViewer;
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let pdfThumbnailViewer = this.pdfThumbnailViewer;
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pdfThumbnailViewer.setDocument(pdfDocument);
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firstPagePromise.then((pdfPage) => {
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downloadedPromise.then(function () {
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self.eventBus.dispatch('documentload', {source: self});
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});
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this.loadingBar.setWidth(this.appConfig.viewerContainer);
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self.loadingBar.setWidth(self.appConfig.viewerContainer);
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if (!PDFJS.disableHistory && !self.isViewerEmbedded) {
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if (!PDFJS.disableHistory && !this.isViewerEmbedded) {
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// The browsing history is only enabled when the viewer is standalone,
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// i.e. not when it is embedded in a web page.
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if (!self.viewerPrefs['showPreviousViewOnLoad']) {
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self.pdfHistory.clearHistoryState();
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if (!this.viewerPrefs['showPreviousViewOnLoad']) {
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this.pdfHistory.clearHistoryState();
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}
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self.pdfHistory.initialize(self.documentFingerprint);
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this.pdfHistory.initialize(this.documentFingerprint);
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if (self.pdfHistory.initialDestination) {
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self.initialDestination = self.pdfHistory.initialDestination;
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} else if (self.pdfHistory.initialBookmark) {
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self.initialBookmark = self.pdfHistory.initialBookmark;
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if (this.pdfHistory.initialDestination) {
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this.initialDestination = this.pdfHistory.initialDestination;
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} else if (this.pdfHistory.initialBookmark) {
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this.initialBookmark = this.pdfHistory.initialBookmark;
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}
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}
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var initialParams = {
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let initialParams = {
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destination: this.initialDestination,
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bookmark: this.initialBookmark,
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hash: null,
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};
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var storedHash = this.viewerPrefs['defaultZoomValue'] ?
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let storedHash = this.viewerPrefs['defaultZoomValue'] ?
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('zoom=' + this.viewerPrefs['defaultZoomValue']) : null;
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var sidebarView = this.viewerPrefs['sidebarViewOnLoad'];
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let sidebarView = this.viewerPrefs['sidebarViewOnLoad'];
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new Promise((resolve, reject) => {
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if (!this.viewerPrefs['showPreviousViewOnLoad']) {
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@ -967,12 +957,12 @@ var PDFViewerApplication = {
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});
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});
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pdfDocument.getPageLabels().then(function (labels) {
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if (!labels || self.viewerPrefs['disablePageLabels']) {
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pdfDocument.getPageLabels().then((labels) => {
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if (!labels || this.viewerPrefs['disablePageLabels']) {
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return;
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}
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var i = 0, numLabels = labels.length;
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if (numLabels !== self.pagesCount) {
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let i = 0, numLabels = labels.length;
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if (numLabels !== this.pagesCount) {
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console.error('The number of Page Labels does not match ' +
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'the number of pages in the document.');
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return;
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@ -990,46 +980,46 @@ var PDFViewerApplication = {
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// Changing toolbar page display to use labels and we need to set
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// the label of the current page.
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self.toolbar.setPagesCount(pdfDocument.numPages, true);
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self.toolbar.setPageNumber(pdfViewer.currentPageNumber,
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this.toolbar.setPagesCount(pdfDocument.numPages, true);
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this.toolbar.setPageNumber(pdfViewer.currentPageNumber,
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pdfViewer.currentPageLabel);
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});
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pagesPromise.then(function() {
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if (self.supportsPrinting) {
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pdfDocument.getJavaScript().then(function(javaScript) {
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if (javaScript.length) {
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console.warn('Warning: JavaScript is not supported');
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self.fallback(UNSUPPORTED_FEATURES.javaScript);
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}
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// Hack to support auto printing.
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var regex = /\bprint\s*\(/;
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for (var i = 0, ii = javaScript.length; i < ii; i++) {
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var js = javaScript[i];
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if (js && regex.test(js)) {
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setTimeout(function() {
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window.print();
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});
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return;
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}
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}
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});
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pagesPromise.then(() => {
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if (!this.supportsPrinting) {
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return;
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}
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});
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Promise.all([onePageRendered, animationStarted]).then(function() {
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pdfDocument.getOutline().then(function(outline) {
|
||||
self.pdfOutlineViewer.render({ outline, });
|
||||
});
|
||||
pdfDocument.getAttachments().then(function(attachments) {
|
||||
self.pdfAttachmentViewer.render({ attachments, });
|
||||
pdfDocument.getJavaScript().then((javaScript) => {
|
||||
if (javaScript.length) {
|
||||
console.warn('Warning: JavaScript is not supported');
|
||||
this.fallback(UNSUPPORTED_FEATURES.javaScript);
|
||||
}
|
||||
// Hack to support auto printing.
|
||||
let regex = /\bprint\s*\(/;
|
||||
for (let i = 0, ii = javaScript.length; i < ii; i++) {
|
||||
let js = javaScript[i];
|
||||
if (js && regex.test(js)) {
|
||||
setTimeout(function() {
|
||||
window.print();
|
||||
});
|
||||
return;
|
||||
}
|
||||
}
|
||||
});
|
||||
});
|
||||
|
||||
pdfDocument.getMetadata().then(function(data) {
|
||||
var info = data.info, metadata = data.metadata;
|
||||
self.documentInfo = info;
|
||||
self.metadata = metadata;
|
||||
Promise.all([onePageRendered, animationStarted]).then(() => {
|
||||
pdfDocument.getOutline().then((outline) => {
|
||||
this.pdfOutlineViewer.render({ outline, });
|
||||
});
|
||||
pdfDocument.getAttachments().then((attachments) => {
|
||||
this.pdfAttachmentViewer.render({ attachments, });
|
||||
});
|
||||
});
|
||||
|
||||
pdfDocument.getMetadata().then(({ info, metadata, }) => {
|
||||
this.documentInfo = info;
|
||||
this.metadata = metadata;
|
||||
|
||||
// Provides some basic debug information
|
||||
console.log('PDF ' + pdfDocument.fingerprint + ' [' +
|
||||
@ -1038,9 +1028,9 @@ var PDFViewerApplication = {
|
||||
' (PDF.js: ' + (version || '-') +
|
||||
(!PDFJS.disableWebGL ? ' [WebGL]' : '') + ')');
|
||||
|
||||
var pdfTitle;
|
||||
let pdfTitle;
|
||||
if (metadata && metadata.has('dc:title')) {
|
||||
var title = metadata.get('dc:title');
|
||||
let title = metadata.get('dc:title');
|
||||
// Ghostscript sometimes return 'Untitled', sets the title to 'Untitled'
|
||||
if (title !== 'Untitled') {
|
||||
pdfTitle = title;
|
||||
@ -1052,19 +1042,19 @@ var PDFViewerApplication = {
|
||||
}
|
||||
|
||||
if (pdfTitle) {
|
||||
self.setTitle(pdfTitle + ' - ' + document.title);
|
||||
this.setTitle(pdfTitle + ' - ' + document.title);
|
||||
}
|
||||
|
||||
if (info.IsAcroFormPresent) {
|
||||
console.warn('Warning: AcroForm/XFA is not supported');
|
||||
self.fallback(UNSUPPORTED_FEATURES.forms);
|
||||
this.fallback(UNSUPPORTED_FEATURES.forms);
|
||||
}
|
||||
|
||||
if (typeof PDFJSDev !== 'undefined' &&
|
||||
PDFJSDev.test('FIREFOX || MOZCENTRAL')) {
|
||||
var versionId = String(info.PDFFormatVersion).slice(-1) | 0;
|
||||
var generatorId = 0;
|
||||
var KNOWN_GENERATORS = [
|
||||
let versionId = String(info.PDFFormatVersion).slice(-1) | 0;
|
||||
let generatorId = 0;
|
||||
const KNOWN_GENERATORS = [
|
||||
'acrobat distiller', 'acrobat pdfwriter', 'adobe livecycle',
|
||||
'adobe pdf library', 'adobe photoshop', 'ghostscript', 'tcpdf',
|
||||
'cairo', 'dvipdfm', 'dvips', 'pdftex', 'pdfkit', 'itext', 'prince',
|
||||
@ -1080,9 +1070,9 @@ var PDFViewerApplication = {
|
||||
return true;
|
||||
}.bind(null, info.Producer.toLowerCase()));
|
||||
}
|
||||
var formType = !info.IsAcroFormPresent ? null : info.IsXFAPresent ?
|
||||
let formType = !info.IsAcroFormPresent ? null : info.IsXFAPresent ?
|
||||
'xfa' : 'acroform';
|
||||
self.externalServices.reportTelemetry({
|
||||
this.externalServices.reportTelemetry({
|
||||
type: 'documentInfo',
|
||||
version: versionId,
|
||||
generator: generatorId,
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user