2308 lines
76 KiB
JavaScript
2308 lines
76 KiB
JavaScript
/* Copyright 2012 Mozilla Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/* globals PDFBug, Stats */
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import {
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animationStarted, DEFAULT_SCALE_VALUE, getPDFFileNameFromURL, MAX_SCALE,
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MIN_SCALE, noContextMenuHandler, normalizeWheelEventDelta,
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parseQueryString, ProgressBar, RendererType, UNKNOWN_SCALE
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} from './ui_utils';
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import {
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build, createBlob, getDocument, getFilenameFromUrl, InvalidPDFException,
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MissingPDFException, OPS, PDFJS, shadow, UnexpectedResponseException,
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UNSUPPORTED_FEATURES, version
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} from 'pdfjs-lib';
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import { CursorTool, PDFCursorTools } from './pdf_cursor_tools';
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import { PDFRenderingQueue, RenderingStates } from './pdf_rendering_queue';
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import { PDFSidebar, SidebarView } from './pdf_sidebar';
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import { PDFViewer, PresentationModeState } from './pdf_viewer';
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import { getGlobalEventBus } from './dom_events';
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import { OverlayManager } from './overlay_manager';
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import { PasswordPrompt } from './password_prompt';
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import { PDFAttachmentViewer } from './pdf_attachment_viewer';
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import { PDFDocumentProperties } from './pdf_document_properties';
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import { PDFFindBar } from './pdf_find_bar';
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import { PDFFindController } from './pdf_find_controller';
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import { PDFHistory } from './pdf_history';
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import { PDFLinkService } from './pdf_link_service';
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import { PDFOutlineViewer } from './pdf_outline_viewer';
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import { PDFPresentationMode } from './pdf_presentation_mode';
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import { PDFThumbnailViewer } from './pdf_thumbnail_viewer';
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import { SecondaryToolbar } from './secondary_toolbar';
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import { Toolbar } from './toolbar';
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import { ViewHistory } from './view_history';
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const DEFAULT_SCALE_DELTA = 1.1;
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const DISABLE_AUTO_FETCH_LOADING_BAR_TIMEOUT = 5000;
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function configure(PDFJS) {
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PDFJS.imageResourcesPath = './images/';
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if (typeof PDFJSDev !== 'undefined' &&
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PDFJSDev.test('FIREFOX || MOZCENTRAL || GENERIC || CHROME')) {
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PDFJS.workerSrc = '../build/pdf.worker.js';
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}
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if (typeof PDFJSDev === 'undefined' || !PDFJSDev.test('PRODUCTION')) {
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PDFJS.cMapUrl = '../external/bcmaps/';
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PDFJS.cMapPacked = true;
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PDFJS.workerSrc = '../src/worker_loader.js';
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PDFJS.pdfjsNext = true;
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} else {
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PDFJS.cMapUrl = '../web/cmaps/';
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PDFJS.cMapPacked = true;
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}
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}
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const DefaultExternalServices = {
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updateFindControlState(data) {},
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initPassiveLoading(callbacks) {},
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fallback(data, callback) {},
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reportTelemetry(data) {},
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createDownloadManager() {
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throw new Error('Not implemented: createDownloadManager');
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},
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createPreferences() {
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throw new Error('Not implemented: createPreferences');
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},
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createL10n() {
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throw new Error('Not implemented: createL10n');
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},
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supportsIntegratedFind: false,
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supportsDocumentFonts: true,
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supportsDocumentColors: true,
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supportedMouseWheelZoomModifierKeys: {
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ctrlKey: true,
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metaKey: true,
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},
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};
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let PDFViewerApplication = {
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initialBookmark: document.location.hash.substring(1),
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initialDestination: null,
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initialized: false,
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fellback: false,
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appConfig: null,
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pdfDocument: null,
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pdfLoadingTask: null,
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printService: null,
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/** @type {PDFViewer} */
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pdfViewer: null,
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/** @type {PDFThumbnailViewer} */
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pdfThumbnailViewer: null,
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/** @type {PDFRenderingQueue} */
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pdfRenderingQueue: null,
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/** @type {PDFPresentationMode} */
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pdfPresentationMode: null,
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/** @type {PDFDocumentProperties} */
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pdfDocumentProperties: null,
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/** @type {PDFLinkService} */
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pdfLinkService: null,
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/** @type {PDFHistory} */
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pdfHistory: null,
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/** @type {PDFSidebar} */
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pdfSidebar: null,
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/** @type {PDFOutlineViewer} */
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pdfOutlineViewer: null,
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/** @type {PDFAttachmentViewer} */
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pdfAttachmentViewer: null,
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/** @type {PDFCursorTools} */
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pdfCursorTools: null,
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/** @type {ViewHistory} */
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store: null,
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/** @type {DownloadManager} */
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downloadManager: null,
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/** @type {OverlayManager} */
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overlayManager: null,
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/** @type {Preferences} */
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preferences: null,
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/** @type {Toolbar} */
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toolbar: null,
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/** @type {SecondaryToolbar} */
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secondaryToolbar: null,
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/** @type {EventBus} */
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eventBus: null,
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/** @type {IL10n} */
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l10n: null,
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isInitialViewSet: false,
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downloadComplete: false,
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viewerPrefs: {
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sidebarViewOnLoad: SidebarView.NONE,
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pdfBugEnabled: false,
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showPreviousViewOnLoad: true,
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defaultZoomValue: '',
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disablePageLabels: false,
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renderer: 'canvas',
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enhanceTextSelection: false,
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renderInteractiveForms: false,
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enablePrintAutoRotate: false,
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},
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isViewerEmbedded: (window.parent !== window),
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url: '',
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baseUrl: '',
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externalServices: DefaultExternalServices,
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_boundEvents: {},
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// Called once when the document is loaded.
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initialize(appConfig) {
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this.preferences = this.externalServices.createPreferences();
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configure(PDFJS);
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this.appConfig = appConfig;
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return this._readPreferences().then(() => {
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return this._initializeL10n();
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}).then(() => {
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return this._initializeViewerComponents();
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}).then(() => {
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// Bind the various event handlers *after* the viewer has been
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// initialized, to prevent errors if an event arrives too soon.
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this.bindEvents();
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this.bindWindowEvents();
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// We can start UI localization now.
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let appContainer = appConfig.appContainer || document.documentElement;
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this.l10n.translate(appContainer).then(() => {
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// Dispatch the 'localized' event on the `eventBus` once the viewer
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// has been fully initialized and translated.
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this.eventBus.dispatch('localized');
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});
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if (this.isViewerEmbedded && !PDFJS.isExternalLinkTargetSet()) {
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// Prevent external links from "replacing" the viewer,
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// when it's embedded in e.g. an iframe or an object.
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PDFJS.externalLinkTarget = PDFJS.LinkTarget.TOP;
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}
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this.initialized = true;
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});
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},
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/**
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* @private
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*/
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_readPreferences() {
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let { preferences, viewerPrefs, } = this;
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return Promise.all([
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preferences.get('enableWebGL').then(function resolved(value) {
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PDFJS.disableWebGL = !value;
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}),
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preferences.get('sidebarViewOnLoad').then(function resolved(value) {
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viewerPrefs['sidebarViewOnLoad'] = value;
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}),
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preferences.get('pdfBugEnabled').then(function resolved(value) {
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viewerPrefs['pdfBugEnabled'] = value;
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}),
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preferences.get('showPreviousViewOnLoad').then(function resolved(value) {
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viewerPrefs['showPreviousViewOnLoad'] = value;
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}),
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preferences.get('defaultZoomValue').then(function resolved(value) {
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viewerPrefs['defaultZoomValue'] = value;
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}),
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preferences.get('enhanceTextSelection').then(function resolved(value) {
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viewerPrefs['enhanceTextSelection'] = value;
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}),
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preferences.get('disableTextLayer').then(function resolved(value) {
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if (PDFJS.disableTextLayer === true) {
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return;
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}
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PDFJS.disableTextLayer = value;
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}),
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preferences.get('disableRange').then(function resolved(value) {
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if (PDFJS.disableRange === true) {
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return;
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}
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PDFJS.disableRange = value;
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}),
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preferences.get('disableStream').then(function resolved(value) {
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if (PDFJS.disableStream === true) {
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return;
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}
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PDFJS.disableStream = value;
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}),
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preferences.get('disableAutoFetch').then(function resolved(value) {
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PDFJS.disableAutoFetch = value;
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}),
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preferences.get('disableFontFace').then(function resolved(value) {
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if (PDFJS.disableFontFace === true) {
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return;
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}
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PDFJS.disableFontFace = value;
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}),
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preferences.get('useOnlyCssZoom').then(function resolved(value) {
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PDFJS.useOnlyCssZoom = value;
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}),
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preferences.get('externalLinkTarget').then(function resolved(value) {
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if (PDFJS.isExternalLinkTargetSet()) {
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return;
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}
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PDFJS.externalLinkTarget = value;
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}),
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preferences.get('renderer').then(function resolved(value) {
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viewerPrefs['renderer'] = value;
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}),
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preferences.get('renderInteractiveForms').then(function resolved(value) {
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viewerPrefs['renderInteractiveForms'] = value;
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}),
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preferences.get('disablePageLabels').then(function resolved(value) {
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viewerPrefs['disablePageLabels'] = value;
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}),
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preferences.get('enablePrintAutoRotate').then(function resolved(value) {
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viewerPrefs['enablePrintAutoRotate'] = value;
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}),
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]).catch(function(reason) { });
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},
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_initializeL10n() {
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// Locale can be changed only when special debugging flags is present in
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// the hash section of the URL, or development version of viewer is used.
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// It is not possible to change locale for Firefox extension builds.
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if (typeof PDFJSDev === 'undefined' || !PDFJSDev.test('PRODUCTION') ||
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(!PDFJSDev.test('FIREFOX || MOZCENTRAL') &&
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this.viewerPrefs['pdfBugEnabled'])) {
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let hash = document.location.hash.substring(1);
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let hashParams = parseQueryString(hash);
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if ('locale' in hashParams) {
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PDFJS.locale = hashParams['locale'];
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}
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}
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this.l10n = this.externalServices.createL10n();
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return this.l10n.getDirection().then((dir) => {
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document.getElementsByTagName('html')[0].dir = dir;
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});
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},
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/**
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* @private
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*/
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_initializeViewerComponents() {
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let appConfig = this.appConfig;
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return new Promise((resolve, reject) => {
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this.overlayManager = new OverlayManager();
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let eventBus = appConfig.eventBus || getGlobalEventBus();
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this.eventBus = eventBus;
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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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let pdfLinkService = new PDFLinkService({
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eventBus,
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});
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this.pdfLinkService = pdfLinkService;
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let downloadManager = this.externalServices.createDownloadManager();
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this.downloadManager = downloadManager;
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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: this.viewerPrefs['renderer'],
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l10n: this.l10n,
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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(this.pdfViewer);
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pdfLinkService.setViewer(this.pdfViewer);
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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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l10n: this.l10n,
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});
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pdfRenderingQueue.setThumbnailViewer(this.pdfThumbnailViewer);
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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(this.pdfHistory);
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this.findController = new PDFFindController({
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pdfViewer: this.pdfViewer,
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});
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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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this.findBar.updateResultsCount(matchCount);
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};
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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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this.findBar.updateUIState(state, previous, matchCount);
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}
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};
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this.pdfViewer.setFindController(this.findController);
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// TODO: improve `PDFFindBar` constructor parameter passing
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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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this.findBar = new PDFFindBar(findBarConfig, this.l10n);
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this.pdfDocumentProperties =
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new PDFDocumentProperties(appConfig.documentProperties,
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this.overlayManager, this.l10n);
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this.pdfCursorTools = new PDFCursorTools({
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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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this.toolbar = new Toolbar(appConfig.toolbar, container, eventBus,
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this.l10n);
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this.secondaryToolbar =
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new SecondaryToolbar(appConfig.secondaryToolbar, container, eventBus);
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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: 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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this.passwordPrompt = new PasswordPrompt(appConfig.passwordOverlay,
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this.overlayManager, this.l10n);
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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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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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// TODO: improve `PDFSidebar` constructor parameter passing
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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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this.pdfSidebar = new PDFSidebar(sidebarConfig, this.l10n);
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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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},
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run(config) {
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this.initialize(config).then(webViewerInitialized);
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},
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zoomIn(ticks) {
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let newScale = this.pdfViewer.currentScale;
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do {
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newScale = (newScale * DEFAULT_SCALE_DELTA).toFixed(2);
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newScale = Math.ceil(newScale * 10) / 10;
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newScale = Math.min(MAX_SCALE, newScale);
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} while (--ticks > 0 && newScale < MAX_SCALE);
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this.pdfViewer.currentScaleValue = newScale;
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},
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zoomOut(ticks) {
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let newScale = this.pdfViewer.currentScale;
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do {
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newScale = (newScale / DEFAULT_SCALE_DELTA).toFixed(2);
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newScale = Math.floor(newScale * 10) / 10;
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newScale = Math.max(MIN_SCALE, newScale);
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} while (--ticks > 0 && newScale > MIN_SCALE);
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this.pdfViewer.currentScaleValue = newScale;
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},
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get pagesCount() {
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return this.pdfDocument ? this.pdfDocument.numPages : 0;
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},
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get pageRotation() {
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return this.pdfViewer.pagesRotation;
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},
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set page(val) {
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this.pdfViewer.currentPageNumber = val;
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},
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get page() {
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return this.pdfViewer.currentPageNumber;
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},
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get printing() {
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return !!this.printService;
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},
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get supportsPrinting() {
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return PDFPrintServiceFactory.instance.supportsPrinting;
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},
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|
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get supportsFullscreen() {
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let support;
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if (typeof PDFJSDev !== 'undefined' && PDFJSDev.test('MOZCENTRAL')) {
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support = document.fullscreenEnabled === true ||
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document.mozFullScreenEnabled === true;
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} else {
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let doc = document.documentElement;
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support = !!(doc.requestFullscreen || doc.mozRequestFullScreen ||
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doc.webkitRequestFullScreen || doc.msRequestFullscreen);
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if (document.fullscreenEnabled === false ||
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document.mozFullScreenEnabled === false ||
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document.webkitFullscreenEnabled === false ||
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document.msFullscreenEnabled === false) {
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support = false;
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}
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}
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if (support && PDFJS.disableFullscreen === true) {
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support = false;
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}
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return shadow(this, 'supportsFullscreen', support);
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},
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get supportsIntegratedFind() {
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return this.externalServices.supportsIntegratedFind;
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},
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get supportsDocumentFonts() {
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return this.externalServices.supportsDocumentFonts;
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},
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get supportsDocumentColors() {
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return this.externalServices.supportsDocumentColors;
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},
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get loadingBar() {
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let bar = new ProgressBar('#loadingBar');
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return shadow(this, 'loadingBar', bar);
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},
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get supportedMouseWheelZoomModifierKeys() {
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return this.externalServices.supportedMouseWheelZoomModifierKeys;
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},
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|
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initPassiveLoading() {
|
|
if (typeof PDFJSDev === 'undefined' ||
|
|
!PDFJSDev.test('FIREFOX || MOZCENTRAL || CHROME')) {
|
|
throw new Error('Not implemented: initPassiveLoading');
|
|
}
|
|
this.externalServices.initPassiveLoading({
|
|
onOpenWithTransport(url, length, transport) {
|
|
PDFViewerApplication.open(url, { range: transport, });
|
|
|
|
if (length) {
|
|
PDFViewerApplication.pdfDocumentProperties.setFileSize(length);
|
|
}
|
|
},
|
|
onOpenWithData(data) {
|
|
PDFViewerApplication.open(data);
|
|
},
|
|
onOpenWithURL(url, length, originalURL) {
|
|
let file = url, args = null;
|
|
if (length !== undefined) {
|
|
args = { length, };
|
|
}
|
|
if (originalURL !== undefined) {
|
|
file = { file: url, originalURL, };
|
|
}
|
|
PDFViewerApplication.open(file, args);
|
|
},
|
|
onError(err) {
|
|
PDFViewerApplication.l10n.get('loading_error', null,
|
|
'An error occurred while loading the PDF.').then((msg) => {
|
|
PDFViewerApplication.error(msg, err);
|
|
});
|
|
},
|
|
onProgress(loaded, total) {
|
|
PDFViewerApplication.progress(loaded / total);
|
|
},
|
|
});
|
|
},
|
|
|
|
setTitleUsingUrl(url) {
|
|
this.url = url;
|
|
this.baseUrl = url.split('#')[0];
|
|
let title = getPDFFileNameFromURL(url, '');
|
|
if (!title) {
|
|
try {
|
|
title = decodeURIComponent(getFilenameFromUrl(url)) || url;
|
|
} catch (ex) {
|
|
// decodeURIComponent may throw URIError,
|
|
// fall back to using the unprocessed url in that case
|
|
title = url;
|
|
}
|
|
}
|
|
this.setTitle(title);
|
|
},
|
|
|
|
setTitle(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() {
|
|
let errorWrapper = this.appConfig.errorWrapper.container;
|
|
errorWrapper.setAttribute('hidden', 'true');
|
|
|
|
if (!this.pdfLoadingTask) {
|
|
return Promise.resolve();
|
|
}
|
|
|
|
let 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.pdfDocumentProperties.setDocument(null, null);
|
|
}
|
|
this.store = null;
|
|
this.isInitialViewSet = false;
|
|
this.downloadComplete = false;
|
|
|
|
this.pdfSidebar.reset();
|
|
this.pdfOutlineViewer.reset();
|
|
this.pdfAttachmentViewer.reset();
|
|
|
|
this.findController.reset();
|
|
this.findBar.reset();
|
|
this.toolbar.reset();
|
|
this.secondaryToolbar.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(file, args) {
|
|
if ((typeof PDFJSDev === 'undefined' || PDFJSDev.test('GENERIC')) &&
|
|
(arguments.length > 2 || typeof args === 'number')) {
|
|
return Promise.reject(
|
|
new Error('Call of open() with obsolete signature.'));
|
|
}
|
|
if (this.pdfLoadingTask) {
|
|
// We need to destroy already opened document.
|
|
return this.close().then(() => {
|
|
// Reload the preferences if a document was previously opened.
|
|
this.preferences.reload();
|
|
// ... and repeat the open() call.
|
|
return this.open(file, args);
|
|
});
|
|
}
|
|
|
|
let 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;
|
|
}
|
|
if (typeof PDFJSDev !== 'undefined' &&
|
|
PDFJSDev.test('FIREFOX || MOZCENTRAL || CHROME')) {
|
|
parameters.docBaseUrl = this.baseUrl;
|
|
}
|
|
|
|
if (args) {
|
|
for (let prop in args) {
|
|
parameters[prop] = args[prop];
|
|
}
|
|
|
|
if (args.scale) {
|
|
scale = args.scale;
|
|
}
|
|
if (args.length) {
|
|
this.pdfDocumentProperties.setFileSize(args.length);
|
|
}
|
|
}
|
|
|
|
let loadingTask = getDocument(parameters);
|
|
this.pdfLoadingTask = loadingTask;
|
|
|
|
loadingTask.onPassword = (updateCallback, reason) => {
|
|
this.passwordPrompt.setUpdateCallback(updateCallback, reason);
|
|
this.passwordPrompt.open();
|
|
};
|
|
|
|
loadingTask.onProgress = ({ loaded, total, }) => {
|
|
this.progress(loaded / total);
|
|
};
|
|
|
|
// Listen for unsupported features to trigger the fallback UI.
|
|
loadingTask.onUnsupportedFeature = this.fallback.bind(this);
|
|
|
|
return loadingTask.promise.then((pdfDocument) => {
|
|
this.load(pdfDocument, scale);
|
|
}, (exception) => {
|
|
let message = exception && exception.message;
|
|
let loadingErrorMessage;
|
|
if (exception instanceof InvalidPDFException) {
|
|
// change error message also for other builds
|
|
loadingErrorMessage = this.l10n.get('invalid_file_error', null,
|
|
'Invalid or corrupted PDF file.');
|
|
} else if (exception instanceof MissingPDFException) {
|
|
// special message for missing PDF's
|
|
loadingErrorMessage = this.l10n.get('missing_file_error', null,
|
|
'Missing PDF file.');
|
|
} else if (exception instanceof UnexpectedResponseException) {
|
|
loadingErrorMessage = this.l10n.get('unexpected_response_error', null,
|
|
'Unexpected server response.');
|
|
} else {
|
|
loadingErrorMessage = this.l10n.get('loading_error', null,
|
|
'An error occurred while loading the PDF.');
|
|
}
|
|
|
|
return loadingErrorMessage.then((msg) => {
|
|
this.error(msg, { message, });
|
|
throw new Error(msg);
|
|
});
|
|
});
|
|
},
|
|
|
|
download() {
|
|
function downloadByUrl() {
|
|
downloadManager.downloadUrl(url, filename);
|
|
}
|
|
|
|
let url = this.baseUrl;
|
|
// Use this.url instead of this.baseUrl to perform filename detection based
|
|
// on the reference fragment as ultimate fallback if needed.
|
|
let filename = getPDFFileNameFromURL(this.url);
|
|
let downloadManager = this.downloadManager;
|
|
downloadManager.onerror = (err) => {
|
|
// This error won't really be helpful because it's likely the
|
|
// fallback won't work either (or is already open).
|
|
this.error(`PDF failed to download: ${err}`);
|
|
};
|
|
|
|
// When the PDF document isn't ready, or the PDF file is still downloading,
|
|
// simply download using the URL.
|
|
if (!this.pdfDocument || !this.downloadComplete) {
|
|
downloadByUrl();
|
|
return;
|
|
}
|
|
|
|
this.pdfDocument.getData().then(function(data) {
|
|
let blob = createBlob(data, 'application/pdf');
|
|
downloadManager.download(blob, url, filename);
|
|
}).catch(downloadByUrl); // Error occurred, try downloading with the URL.
|
|
},
|
|
|
|
fallback(featureId) {
|
|
if (typeof PDFJSDev !== 'undefined' &&
|
|
PDFJSDev.test('FIREFOX || MOZCENTRAL')) {
|
|
// 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,
|
|
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(message, moreInfo) {
|
|
let moreInfoText = [this.l10n.get('error_version_info',
|
|
{ version: version || '?', build: build || '?', },
|
|
'PDF.js v{{version}} (build: {{build}})')];
|
|
if (moreInfo) {
|
|
moreInfoText.push(
|
|
this.l10n.get('error_message', { message: moreInfo.message, },
|
|
'Message: {{message}}'));
|
|
if (moreInfo.stack) {
|
|
moreInfoText.push(
|
|
this.l10n.get('error_stack', { stack: moreInfo.stack, },
|
|
'Stack: {{stack}}'));
|
|
} else {
|
|
if (moreInfo.filename) {
|
|
moreInfoText.push(
|
|
this.l10n.get('error_file', { file: moreInfo.filename, },
|
|
'File: {{file}}'));
|
|
}
|
|
if (moreInfo.lineNumber) {
|
|
moreInfoText.push(
|
|
this.l10n.get('error_line', { line: moreInfo.lineNumber, },
|
|
'Line: {{line}}'));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (typeof PDFJSDev === 'undefined' ||
|
|
!PDFJSDev.test('FIREFOX || MOZCENTRAL')) {
|
|
let errorWrapperConfig = this.appConfig.errorWrapper;
|
|
let errorWrapper = errorWrapperConfig.container;
|
|
errorWrapper.removeAttribute('hidden');
|
|
|
|
let errorMessage = errorWrapperConfig.errorMessage;
|
|
errorMessage.textContent = message;
|
|
|
|
let closeButton = errorWrapperConfig.closeButton;
|
|
closeButton.onclick = function() {
|
|
errorWrapper.setAttribute('hidden', 'true');
|
|
};
|
|
|
|
let errorMoreInfo = errorWrapperConfig.errorMoreInfo;
|
|
let moreInfoButton = errorWrapperConfig.moreInfoButton;
|
|
let lessInfoButton = errorWrapperConfig.lessInfoButton;
|
|
moreInfoButton.onclick = function() {
|
|
errorMoreInfo.removeAttribute('hidden');
|
|
moreInfoButton.setAttribute('hidden', 'true');
|
|
lessInfoButton.removeAttribute('hidden');
|
|
errorMoreInfo.style.height = errorMoreInfo.scrollHeight + 'px';
|
|
};
|
|
lessInfoButton.onclick = function() {
|
|
errorMoreInfo.setAttribute('hidden', 'true');
|
|
moreInfoButton.removeAttribute('hidden');
|
|
lessInfoButton.setAttribute('hidden', 'true');
|
|
};
|
|
moreInfoButton.oncontextmenu = noContextMenuHandler;
|
|
lessInfoButton.oncontextmenu = noContextMenuHandler;
|
|
closeButton.oncontextmenu = noContextMenuHandler;
|
|
moreInfoButton.removeAttribute('hidden');
|
|
lessInfoButton.setAttribute('hidden', 'true');
|
|
Promise.all(moreInfoText).then((parts) => {
|
|
errorMoreInfo.value = parts.join('\n');
|
|
});
|
|
} else {
|
|
console.error(message + '\n' + moreInfoText);
|
|
this.fallback();
|
|
}
|
|
},
|
|
|
|
progress(level) {
|
|
let 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 (PDFJS.disableAutoFetch && percent) {
|
|
if (this.disableAutoFetchLoadingBarTimeout) {
|
|
clearTimeout(this.disableAutoFetchLoadingBarTimeout);
|
|
this.disableAutoFetchLoadingBarTimeout = null;
|
|
}
|
|
this.loadingBar.show();
|
|
|
|
this.disableAutoFetchLoadingBarTimeout = setTimeout(() => {
|
|
this.loadingBar.hide();
|
|
this.disableAutoFetchLoadingBarTimeout = null;
|
|
}, DISABLE_AUTO_FETCH_LOADING_BAR_TIMEOUT);
|
|
}
|
|
}
|
|
},
|
|
|
|
load(pdfDocument, scale) {
|
|
scale = scale || UNKNOWN_SCALE;
|
|
this.pdfDocument = pdfDocument;
|
|
|
|
pdfDocument.getDownloadInfo().then(() => {
|
|
this.downloadComplete = true;
|
|
this.loadingBar.hide();
|
|
|
|
firstPagePromise.then(() => {
|
|
this.eventBus.dispatch('documentload', { source: this, });
|
|
});
|
|
});
|
|
|
|
this.toolbar.setPagesCount(pdfDocument.numPages, false);
|
|
this.secondaryToolbar.setPagesCount(pdfDocument.numPages);
|
|
|
|
let id = this.documentFingerprint = pdfDocument.fingerprint;
|
|
let store = this.store = new ViewHistory(id);
|
|
|
|
let baseDocumentUrl;
|
|
if (typeof PDFJSDev === 'undefined' || PDFJSDev.test('GENERIC')) {
|
|
baseDocumentUrl = null;
|
|
} else if (PDFJSDev.test('FIREFOX || MOZCENTRAL')) {
|
|
baseDocumentUrl = this.baseUrl;
|
|
} else if (PDFJSDev.test('CHROME')) {
|
|
baseDocumentUrl = location.href.split('#')[0];
|
|
}
|
|
this.pdfLinkService.setDocument(pdfDocument, baseDocumentUrl);
|
|
this.pdfDocumentProperties.setDocument(pdfDocument, this.url);
|
|
|
|
let pdfViewer = this.pdfViewer;
|
|
pdfViewer.setDocument(pdfDocument);
|
|
let firstPagePromise = pdfViewer.firstPagePromise;
|
|
let pagesPromise = pdfViewer.pagesPromise;
|
|
let onePageRendered = pdfViewer.onePageRendered;
|
|
|
|
let pdfThumbnailViewer = this.pdfThumbnailViewer;
|
|
pdfThumbnailViewer.setDocument(pdfDocument);
|
|
|
|
firstPagePromise.then((pdfPage) => {
|
|
this.loadingBar.setWidth(this.appConfig.viewerContainer);
|
|
|
|
if (!PDFJS.disableHistory && !this.isViewerEmbedded) {
|
|
// The browsing history is only enabled when the viewer is standalone,
|
|
// i.e. not when it is embedded in a web page.
|
|
if (!this.viewerPrefs['showPreviousViewOnLoad']) {
|
|
this.pdfHistory.clearHistoryState();
|
|
}
|
|
this.pdfHistory.initialize(this.documentFingerprint);
|
|
|
|
if (this.pdfHistory.initialDestination) {
|
|
this.initialDestination = this.pdfHistory.initialDestination;
|
|
} else if (this.pdfHistory.initialBookmark) {
|
|
this.initialBookmark = this.pdfHistory.initialBookmark;
|
|
}
|
|
}
|
|
|
|
let initialParams = {
|
|
destination: this.initialDestination,
|
|
bookmark: this.initialBookmark,
|
|
hash: null,
|
|
};
|
|
let storePromise = store.getMultiple({
|
|
exists: false,
|
|
page: '1',
|
|
zoom: DEFAULT_SCALE_VALUE,
|
|
scrollLeft: '0',
|
|
scrollTop: '0',
|
|
sidebarView: SidebarView.NONE,
|
|
}).catch(() => { /* Unable to read from storage -- ignoring errors. */ });
|
|
|
|
storePromise.then((values = {}) => {
|
|
// Initialize the default values, from user preferences.
|
|
let hash = this.viewerPrefs['defaultZoomValue'] ?
|
|
('zoom=' + this.viewerPrefs['defaultZoomValue']) : null;
|
|
let sidebarView = this.viewerPrefs['sidebarViewOnLoad'];
|
|
|
|
if (values.exists && this.viewerPrefs['showPreviousViewOnLoad']) {
|
|
hash = 'page=' + values.page +
|
|
'&zoom=' + (this.viewerPrefs['defaultZoomValue'] || values.zoom) +
|
|
',' + values.scrollLeft + ',' + values.scrollTop;
|
|
sidebarView = sidebarView || (values.sidebarView | 0);
|
|
}
|
|
return {
|
|
hash,
|
|
sidebarView,
|
|
};
|
|
}).then(({ hash, sidebarView, }) => {
|
|
this.setInitialView(hash, { sidebarView, scale, });
|
|
initialParams.hash = hash;
|
|
|
|
// Make all navigation keys work on document load,
|
|
// unless the viewer is embedded in a web page.
|
|
if (!this.isViewerEmbedded) {
|
|
pdfViewer.focus();
|
|
}
|
|
return pagesPromise;
|
|
}).then(() => {
|
|
// For documents with different page sizes, once all pages are resolved,
|
|
// ensure that the correct location becomes visible on load.
|
|
if (!initialParams.destination && !initialParams.bookmark &&
|
|
!initialParams.hash) {
|
|
return;
|
|
}
|
|
if (pdfViewer.hasEqualPageSizes) {
|
|
return;
|
|
}
|
|
this.initialDestination = initialParams.destination;
|
|
this.initialBookmark = initialParams.bookmark;
|
|
|
|
pdfViewer.currentScaleValue = pdfViewer.currentScaleValue;
|
|
this.setInitialView(initialParams.hash);
|
|
}).then(function() {
|
|
// At this point, rendering of the initial page(s) should always have
|
|
// started (and may even have completed).
|
|
// To prevent any future issues, e.g. the document being completely
|
|
// blank on load, always trigger rendering here.
|
|
pdfViewer.update();
|
|
});
|
|
});
|
|
|
|
pdfDocument.getPageLabels().then((labels) => {
|
|
if (!labels || this.viewerPrefs['disablePageLabels']) {
|
|
return;
|
|
}
|
|
let i = 0, numLabels = labels.length;
|
|
if (numLabels !== this.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);
|
|
|
|
// Changing toolbar page display to use labels and we need to set
|
|
// the label of the current page.
|
|
this.toolbar.setPagesCount(pdfDocument.numPages, true);
|
|
this.toolbar.setPageNumber(pdfViewer.currentPageNumber,
|
|
pdfViewer.currentPageLabel);
|
|
});
|
|
|
|
pagesPromise.then(() => {
|
|
if (!this.supportsPrinting) {
|
|
return;
|
|
}
|
|
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;
|
|
}
|
|
}
|
|
});
|
|
});
|
|
|
|
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 + ' [' +
|
|
info.PDFFormatVersion + ' ' + (info.Producer || '-').trim() +
|
|
' / ' + (info.Creator || '-').trim() + ']' +
|
|
' (PDF.js: ' + (version || '-') +
|
|
(!PDFJS.disableWebGL ? ' [WebGL]' : '') + ')');
|
|
|
|
let pdfTitle;
|
|
if (metadata && metadata.has('dc:title')) {
|
|
let 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) {
|
|
this.setTitle(pdfTitle + ' - ' + document.title);
|
|
}
|
|
|
|
if (info.IsAcroFormPresent) {
|
|
console.warn('Warning: AcroForm/XFA is not supported');
|
|
this.fallback(UNSUPPORTED_FEATURES.forms);
|
|
}
|
|
|
|
if (typeof PDFJSDev !== 'undefined' &&
|
|
PDFJSDev.test('FIREFOX || MOZCENTRAL')) {
|
|
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',
|
|
'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()));
|
|
}
|
|
let formType = !info.IsAcroFormPresent ? null : info.IsXFAPresent ?
|
|
'xfa' : 'acroform';
|
|
this.externalServices.reportTelemetry({
|
|
type: 'documentInfo',
|
|
version: versionId,
|
|
generator: generatorId,
|
|
formType,
|
|
});
|
|
}
|
|
});
|
|
},
|
|
|
|
setInitialView(storedHash, options = {}) {
|
|
let { scale = 0, sidebarView = SidebarView.NONE, } = options;
|
|
|
|
this.isInitialViewSet = true;
|
|
this.pdfSidebar.setInitialView(sidebarView);
|
|
|
|
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;
|
|
}
|
|
|
|
// Ensure that the correct page number is displayed in the UI,
|
|
// even if the active page didn't change during document load.
|
|
this.toolbar.setPageNumber(this.pdfViewer.currentPageNumber,
|
|
this.pdfViewer.currentPageLabel);
|
|
this.secondaryToolbar.setPageNumber(this.pdfViewer.currentPageNumber);
|
|
|
|
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() {
|
|
if (!this.pdfDocument) {
|
|
return; // run cleanup when document is loaded
|
|
}
|
|
this.pdfViewer.cleanup();
|
|
this.pdfThumbnailViewer.cleanup();
|
|
|
|
// We don't want to remove fonts used by active page SVGs.
|
|
if (this.pdfViewer.renderer !== RendererType.SVG) {
|
|
this.pdfDocument.cleanup();
|
|
}
|
|
},
|
|
|
|
forceRendering() {
|
|
this.pdfRenderingQueue.printing = this.printing;
|
|
this.pdfRenderingQueue.isThumbnailViewEnabled =
|
|
this.pdfSidebar.isThumbnailViewVisible;
|
|
this.pdfRenderingQueue.renderHighestPriority();
|
|
},
|
|
|
|
beforePrint() {
|
|
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) {
|
|
this.l10n.get('printing_not_supported', null,
|
|
'Warning: Printing is not fully supported by ' +
|
|
'this browser.').then((printMessage) => {
|
|
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) {
|
|
this.l10n.get('printing_not_ready', null,
|
|
'Warning: The PDF is not fully loaded for printing.').
|
|
then((notReadyMessage) => {
|
|
window.alert(notReadyMessage);
|
|
});
|
|
return;
|
|
}
|
|
|
|
let pagesOverview = this.pdfViewer.getPagesOverview();
|
|
let printContainer = this.appConfig.printContainer;
|
|
let printService = PDFPrintServiceFactory.instance.createPrintService(
|
|
this.pdfDocument, pagesOverview, printContainer, this.l10n);
|
|
this.printService = printService;
|
|
this.forceRendering();
|
|
|
|
printService.layout();
|
|
|
|
if (typeof PDFJSDev !== 'undefined' &&
|
|
PDFJSDev.test('FIREFOX || MOZCENTRAL')) {
|
|
this.externalServices.reportTelemetry({
|
|
type: 'print',
|
|
});
|
|
}
|
|
},
|
|
|
|
afterPrint: function pdfViewSetupAfterPrint() {
|
|
if (this.printService) {
|
|
this.printService.destroy();
|
|
this.printService = null;
|
|
}
|
|
this.forceRendering();
|
|
},
|
|
|
|
rotatePages(delta) {
|
|
if (!this.pdfDocument) {
|
|
return;
|
|
}
|
|
let { pdfViewer, pdfThumbnailViewer, } = this;
|
|
let pageNumber = pdfViewer.currentPageNumber;
|
|
let newRotation = (pdfViewer.pagesRotation + 360 + delta) % 360;
|
|
|
|
pdfViewer.pagesRotation = newRotation;
|
|
pdfThumbnailViewer.pagesRotation = newRotation;
|
|
|
|
this.forceRendering();
|
|
// Ensure that the active page doesn't change during rotation.
|
|
pdfViewer.currentPageNumber = pageNumber;
|
|
},
|
|
|
|
requestPresentationMode() {
|
|
if (!this.pdfPresentationMode) {
|
|
return;
|
|
}
|
|
this.pdfPresentationMode.request();
|
|
},
|
|
|
|
bindEvents() {
|
|
let { eventBus, _boundEvents, } = this;
|
|
|
|
_boundEvents.beforePrint = this.beforePrint.bind(this);
|
|
_boundEvents.afterPrint = this.afterPrint.bind(this);
|
|
|
|
eventBus.on('resize', webViewerResize);
|
|
eventBus.on('hashchange', webViewerHashchange);
|
|
eventBus.on('beforeprint', _boundEvents.beforePrint);
|
|
eventBus.on('afterprint', _boundEvents.afterPrint);
|
|
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('nextpage', webViewerNextPage);
|
|
eventBus.on('previouspage', webViewerPreviousPage);
|
|
eventBus.on('zoomin', webViewerZoomIn);
|
|
eventBus.on('zoomout', webViewerZoomOut);
|
|
eventBus.on('pagenumberchanged', webViewerPageNumberChanged);
|
|
eventBus.on('scalechanged', webViewerScaleChanged);
|
|
eventBus.on('rotatecw', webViewerRotateCw);
|
|
eventBus.on('rotateccw', webViewerRotateCcw);
|
|
eventBus.on('documentproperties', webViewerDocumentProperties);
|
|
eventBus.on('find', webViewerFind);
|
|
eventBus.on('findfromurlhash', webViewerFindFromUrlHash);
|
|
if (typeof PDFJSDev === 'undefined' || PDFJSDev.test('GENERIC')) {
|
|
eventBus.on('fileinputchange', webViewerFileInputChange);
|
|
}
|
|
},
|
|
|
|
bindWindowEvents() {
|
|
let { eventBus, _boundEvents, } = this;
|
|
|
|
_boundEvents.windowResize = () => {
|
|
eventBus.dispatch('resize');
|
|
};
|
|
_boundEvents.windowHashChange = () => {
|
|
eventBus.dispatch('hashchange', {
|
|
hash: document.location.hash.substring(1),
|
|
});
|
|
};
|
|
_boundEvents.windowBeforePrint = () => {
|
|
eventBus.dispatch('beforeprint');
|
|
};
|
|
_boundEvents.windowAfterPrint = () => {
|
|
eventBus.dispatch('afterprint');
|
|
};
|
|
|
|
window.addEventListener('wheel', webViewerWheel);
|
|
window.addEventListener('click', webViewerClick);
|
|
window.addEventListener('keydown', webViewerKeyDown);
|
|
window.addEventListener('resize', _boundEvents.windowResize);
|
|
window.addEventListener('hashchange', _boundEvents.windowHashChange);
|
|
window.addEventListener('beforeprint', _boundEvents.windowBeforePrint);
|
|
window.addEventListener('afterprint', _boundEvents.windowAfterPrint);
|
|
if (typeof PDFJSDev === 'undefined' || PDFJSDev.test('GENERIC')) {
|
|
_boundEvents.windowChange = (evt) => {
|
|
let files = evt.target.files;
|
|
if (!files || files.length === 0) {
|
|
return;
|
|
}
|
|
eventBus.dispatch('fileinputchange', {
|
|
fileInput: evt.target,
|
|
});
|
|
};
|
|
window.addEventListener('change', _boundEvents.windowChange);
|
|
}
|
|
},
|
|
|
|
unbindEvents() {
|
|
let { eventBus, _boundEvents, } = this;
|
|
|
|
eventBus.off('resize', webViewerResize);
|
|
eventBus.off('hashchange', webViewerHashchange);
|
|
eventBus.off('beforeprint', _boundEvents.beforePrint);
|
|
eventBus.off('afterprint', _boundEvents.afterPrint);
|
|
eventBus.off('pagerendered', webViewerPageRendered);
|
|
eventBus.off('textlayerrendered', webViewerTextLayerRendered);
|
|
eventBus.off('updateviewarea', webViewerUpdateViewarea);
|
|
eventBus.off('pagechanging', webViewerPageChanging);
|
|
eventBus.off('scalechanging', webViewerScaleChanging);
|
|
eventBus.off('sidebarviewchanged', webViewerSidebarViewChanged);
|
|
eventBus.off('pagemode', webViewerPageMode);
|
|
eventBus.off('namedaction', webViewerNamedAction);
|
|
eventBus.off('presentationmodechanged', webViewerPresentationModeChanged);
|
|
eventBus.off('presentationmode', webViewerPresentationMode);
|
|
eventBus.off('openfile', webViewerOpenFile);
|
|
eventBus.off('print', webViewerPrint);
|
|
eventBus.off('download', webViewerDownload);
|
|
eventBus.off('firstpage', webViewerFirstPage);
|
|
eventBus.off('lastpage', webViewerLastPage);
|
|
eventBus.off('nextpage', webViewerNextPage);
|
|
eventBus.off('previouspage', webViewerPreviousPage);
|
|
eventBus.off('zoomin', webViewerZoomIn);
|
|
eventBus.off('zoomout', webViewerZoomOut);
|
|
eventBus.off('pagenumberchanged', webViewerPageNumberChanged);
|
|
eventBus.off('scalechanged', webViewerScaleChanged);
|
|
eventBus.off('rotatecw', webViewerRotateCw);
|
|
eventBus.off('rotateccw', webViewerRotateCcw);
|
|
eventBus.off('documentproperties', webViewerDocumentProperties);
|
|
eventBus.off('find', webViewerFind);
|
|
eventBus.off('findfromurlhash', webViewerFindFromUrlHash);
|
|
if (typeof PDFJSDev === 'undefined' || PDFJSDev.test('GENERIC')) {
|
|
eventBus.off('fileinputchange', webViewerFileInputChange);
|
|
}
|
|
|
|
_boundEvents.beforePrint = null;
|
|
_boundEvents.afterPrint = null;
|
|
},
|
|
|
|
unbindWindowEvents() {
|
|
let { _boundEvents, } = this;
|
|
|
|
window.removeEventListener('wheel', webViewerWheel);
|
|
window.removeEventListener('click', webViewerClick);
|
|
window.removeEventListener('keydown', webViewerKeyDown);
|
|
window.removeEventListener('resize', _boundEvents.windowResize);
|
|
window.removeEventListener('hashchange', _boundEvents.windowHashChange);
|
|
window.removeEventListener('beforeprint', _boundEvents.windowBeforePrint);
|
|
window.removeEventListener('afterprint', _boundEvents.windowAfterPrint);
|
|
if (typeof PDFJSDev === 'undefined' || PDFJSDev.test('GENERIC')) {
|
|
window.removeEventListener('change', _boundEvents.windowChange);
|
|
_boundEvents.windowChange = null;
|
|
}
|
|
|
|
_boundEvents.windowResize = null;
|
|
_boundEvents.windowHashChange = null;
|
|
_boundEvents.windowBeforePrint = null;
|
|
_boundEvents.windowAfterPrint = null;
|
|
},
|
|
};
|
|
|
|
let validateFileURL;
|
|
if (typeof PDFJSDev === 'undefined' || PDFJSDev.test('GENERIC')) {
|
|
const HOSTED_VIEWER_ORIGINS = ['null',
|
|
'http://mozilla.github.io', 'https://mozilla.github.io'];
|
|
validateFileURL = function validateFileURL(file) {
|
|
if (file === undefined) {
|
|
return;
|
|
}
|
|
try {
|
|
let viewerOrigin = new URL(window.location.href).origin || 'null';
|
|
if (HOSTED_VIEWER_ORIGINS.indexOf(viewerOrigin) >= 0) {
|
|
// Hosted or local viewer, allow for any file locations
|
|
return;
|
|
}
|
|
let fileOrigin = new URL(file, window.location.href).origin;
|
|
// Removing of the following line will not guarantee that the viewer will
|
|
// start accepting URLs from foreign origin -- CORS headers on the remote
|
|
// server must be properly configured.
|
|
if (fileOrigin !== viewerOrigin) {
|
|
throw new Error('file origin does not match viewer\'s');
|
|
}
|
|
} catch (ex) {
|
|
let message = ex && ex.message;
|
|
PDFViewerApplication.l10n.get('loading_error', null,
|
|
'An error occurred while loading the PDF.').
|
|
then((loadingErrorMessage) => {
|
|
PDFViewerApplication.error(loadingErrorMessage, { message, });
|
|
});
|
|
throw ex;
|
|
}
|
|
};
|
|
}
|
|
|
|
function loadAndEnablePDFBug(enabledTabs) {
|
|
return new Promise(function (resolve, reject) {
|
|
let appConfig = PDFViewerApplication.appConfig;
|
|
let script = document.createElement('script');
|
|
script.src = appConfig.debuggerScriptPath;
|
|
script.onload = function () {
|
|
PDFBug.enable(enabledTabs);
|
|
PDFBug.init({
|
|
PDFJS,
|
|
OPS,
|
|
}, 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() {
|
|
let appConfig = PDFViewerApplication.appConfig;
|
|
let file;
|
|
if (typeof PDFJSDev === 'undefined' || PDFJSDev.test('GENERIC')) {
|
|
let queryString = document.location.search.substring(1);
|
|
let params = parseQueryString(queryString);
|
|
file = 'file' in params ? params.file : appConfig.defaultUrl;
|
|
validateFileURL(file);
|
|
} else if (PDFJSDev.test('FIREFOX || MOZCENTRAL')) {
|
|
file = window.location.href.split('#')[0];
|
|
} else if (PDFJSDev.test('CHROME')) {
|
|
file = appConfig.defaultUrl;
|
|
}
|
|
|
|
let waitForBeforeOpening = [];
|
|
if (typeof PDFJSDev === 'undefined' || PDFJSDev.test('GENERIC')) {
|
|
let fileInput = document.createElement('input');
|
|
fileInput.id = appConfig.openFileInputName;
|
|
fileInput.className = 'fileInput';
|
|
fileInput.setAttribute('type', 'file');
|
|
fileInput.oncontextmenu = noContextMenuHandler;
|
|
document.body.appendChild(fileInput);
|
|
|
|
if (!window.File || !window.FileReader ||
|
|
!window.FileList || !window.Blob) {
|
|
appConfig.toolbar.openFile.setAttribute('hidden', 'true');
|
|
appConfig.secondaryToolbar.openFileButton.setAttribute('hidden', 'true');
|
|
} else {
|
|
fileInput.value = null;
|
|
}
|
|
} else {
|
|
appConfig.toolbar.openFile.setAttribute('hidden', 'true');
|
|
appConfig.secondaryToolbar.openFileButton.setAttribute('hidden', 'true');
|
|
}
|
|
|
|
if ((typeof PDFJSDev === 'undefined' || !PDFJSDev.test('PRODUCTION')) ||
|
|
PDFViewerApplication.viewerPrefs['pdfBugEnabled']) {
|
|
// Special debugging flags in the hash section of the URL.
|
|
let hash = document.location.hash.substring(1);
|
|
let 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 (typeof PDFJSDev === 'undefined' || !PDFJSDev.test('PRODUCTION')) {
|
|
if ('disablebcmaps' in hashParams && hashParams['disablebcmaps']) {
|
|
PDFJS.cMapUrl = '../external/cmaps/';
|
|
PDFJS.cMapPacked = false;
|
|
}
|
|
}
|
|
if ('textlayer' in hashParams) {
|
|
switch (hashParams['textlayer']) {
|
|
case 'off':
|
|
PDFJS.disableTextLayer = true;
|
|
break;
|
|
case 'visible':
|
|
case 'shadow':
|
|
case 'hover':
|
|
let viewer = appConfig.viewerContainer;
|
|
viewer.classList.add('textLayer-' + hashParams['textlayer']);
|
|
break;
|
|
}
|
|
}
|
|
if ('pdfbug' in hashParams) {
|
|
PDFJS.pdfBug = true;
|
|
let pdfBug = hashParams['pdfbug'];
|
|
let enabled = pdfBug.split(',');
|
|
waitForBeforeOpening.push(loadAndEnablePDFBug(enabled));
|
|
}
|
|
}
|
|
|
|
if (typeof PDFJSDev !== 'undefined' &&
|
|
PDFJSDev.test('FIREFOX || MOZCENTRAL') &&
|
|
!PDFViewerApplication.supportsDocumentFonts) {
|
|
PDFJS.disableFontFace = true;
|
|
PDFViewerApplication.l10n.get('web_fonts_disabled', null,
|
|
'Web fonts are disabled: unable to use embedded PDF fonts.').
|
|
then((msg) => {
|
|
console.warn(msg);
|
|
});
|
|
}
|
|
|
|
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');
|
|
}
|
|
|
|
appConfig.sidebar.mainContainer.addEventListener('transitionend',
|
|
function(evt) {
|
|
if (evt.target === /* mainContainer */ this) {
|
|
PDFViewerApplication.eventBus.dispatch('resize');
|
|
}
|
|
}, true);
|
|
|
|
appConfig.sidebar.toggleButton.addEventListener('click', function() {
|
|
PDFViewerApplication.pdfSidebar.toggle();
|
|
});
|
|
|
|
Promise.all(waitForBeforeOpening).then(function () {
|
|
webViewerOpenFileViaURL(file);
|
|
}).catch(function (reason) {
|
|
PDFViewerApplication.l10n.get('loading_error', null,
|
|
'An error occurred while opening.').then((msg) => {
|
|
PDFViewerApplication.error(msg, reason);
|
|
});
|
|
});
|
|
}
|
|
|
|
let webViewerOpenFileViaURL;
|
|
if (typeof PDFJSDev === 'undefined' || PDFJSDev.test('GENERIC')) {
|
|
webViewerOpenFileViaURL = function webViewerOpenFileViaURL(file) {
|
|
if (file && file.lastIndexOf('file:', 0) === 0) {
|
|
// file:-scheme. Load the contents in the main thread because QtWebKit
|
|
// cannot load file:-URLs in a Web Worker. file:-URLs are usually loaded
|
|
// very quickly, so there is no need to set up progress event listeners.
|
|
PDFViewerApplication.setTitleUsingUrl(file);
|
|
let xhr = new XMLHttpRequest();
|
|
xhr.onload = function() {
|
|
PDFViewerApplication.open(new Uint8Array(xhr.response));
|
|
};
|
|
try {
|
|
xhr.open('GET', file);
|
|
xhr.responseType = 'arraybuffer';
|
|
xhr.send();
|
|
} catch (ex) {
|
|
PDFViewerApplication.l10n.get('loading_error', null,
|
|
'An error occurred while loading the PDF.').then((msg) => {
|
|
PDFViewerApplication.error(msg, ex);
|
|
});
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (file) {
|
|
PDFViewerApplication.open(file);
|
|
}
|
|
};
|
|
} else if (PDFJSDev.test('FIREFOX || MOZCENTRAL || CHROME')) {
|
|
webViewerOpenFileViaURL = function webViewerOpenFileViaURL(file) {
|
|
PDFViewerApplication.setTitleUsingUrl(file);
|
|
PDFViewerApplication.initPassiveLoading();
|
|
};
|
|
} else {
|
|
webViewerOpenFileViaURL = function webViewerOpenFileURL(file) {
|
|
if (file) {
|
|
throw new Error('Not implemented: webViewerOpenFileURL');
|
|
}
|
|
};
|
|
}
|
|
|
|
function webViewerPageRendered(evt) {
|
|
let pageNumber = evt.pageNumber;
|
|
let pageIndex = pageNumber - 1;
|
|
let 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) {
|
|
PDFViewerApplication.toolbar.updateLoadingIndicatorState(false);
|
|
}
|
|
|
|
// 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) {
|
|
let thumbnailView = PDFViewerApplication.pdfThumbnailViewer.
|
|
getThumbnail(pageIndex);
|
|
thumbnailView.setImage(pageView);
|
|
}
|
|
|
|
if (PDFJS.pdfBug && Stats.enabled && pageView.stats) {
|
|
Stats.add(pageNumber, pageView.stats);
|
|
}
|
|
|
|
if (pageView.error) {
|
|
PDFViewerApplication.l10n.get('rendering_error', null,
|
|
'An error occurred while rendering the page.').then((msg) => {
|
|
PDFViewerApplication.error(msg, pageView.error);
|
|
});
|
|
}
|
|
|
|
if (typeof PDFJSDev !== 'undefined' &&
|
|
PDFJSDev.test('FIREFOX || MOZCENTRAL')) {
|
|
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,
|
|
});
|
|
});
|
|
}
|
|
}
|
|
|
|
function webViewerTextLayerRendered(evt) {
|
|
if (typeof PDFJSDev !== 'undefined' &&
|
|
PDFJSDev.test('FIREFOX || MOZCENTRAL') &&
|
|
evt.numTextDivs > 0 && !PDFViewerApplication.supportsDocumentColors) {
|
|
PDFViewerApplication.l10n.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.').
|
|
then((msg) => {
|
|
console.error(msg);
|
|
});
|
|
PDFViewerApplication.fallback();
|
|
}
|
|
}
|
|
|
|
function webViewerPageMode(evt) {
|
|
// Handle the 'pagemode' hash parameter, see also `PDFLinkService_setHash`.
|
|
let mode = evt.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(evt) {
|
|
// Processing couple of named actions that might be useful.
|
|
// See also PDFLinkService.executeNamedAction
|
|
let action = evt.action;
|
|
switch (action) {
|
|
case 'GoToPage':
|
|
PDFViewerApplication.appConfig.toolbar.pageNumber.select();
|
|
break;
|
|
|
|
case 'Find':
|
|
if (!PDFViewerApplication.supportsIntegratedFind) {
|
|
PDFViewerApplication.findBar.toggle();
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
function webViewerPresentationModeChanged(evt) {
|
|
let { active, switchInProgress, } = evt;
|
|
PDFViewerApplication.pdfViewer.presentationModeState =
|
|
switchInProgress ? PresentationModeState.CHANGING :
|
|
active ? PresentationModeState.FULLSCREEN : PresentationModeState.NORMAL;
|
|
}
|
|
|
|
function webViewerSidebarViewChanged(evt) {
|
|
PDFViewerApplication.pdfRenderingQueue.isThumbnailViewEnabled =
|
|
PDFViewerApplication.pdfSidebar.isThumbnailViewVisible;
|
|
|
|
let store = PDFViewerApplication.store;
|
|
if (store && PDFViewerApplication.isInitialViewSet) {
|
|
// Only update the storage when the document has been loaded *and* rendered.
|
|
store.set('sidebarView', evt.view).catch(function() { });
|
|
}
|
|
}
|
|
|
|
function webViewerUpdateViewarea(evt) {
|
|
let location = evt.location, store = PDFViewerApplication.store;
|
|
|
|
if (store && PDFViewerApplication.isInitialViewSet) {
|
|
store.setMultiple({
|
|
'exists': true,
|
|
'page': location.pageNumber,
|
|
'zoom': location.scale,
|
|
'scrollLeft': location.left,
|
|
'scrollTop': location.top,
|
|
}).catch(function() { /* unable to write to storage */ });
|
|
}
|
|
let 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.
|
|
let currentPage =
|
|
PDFViewerApplication.pdfViewer.getPageView(PDFViewerApplication.page - 1);
|
|
let loading = currentPage.renderingState !== RenderingStates.FINISHED;
|
|
PDFViewerApplication.toolbar.updateLoadingIndicatorState(loading);
|
|
}
|
|
|
|
function webViewerResize() {
|
|
let { pdfDocument, pdfViewer, } = PDFViewerApplication;
|
|
if (!pdfDocument) {
|
|
return;
|
|
}
|
|
let currentScaleValue = pdfViewer.currentScaleValue;
|
|
if (currentScaleValue === 'auto' ||
|
|
currentScaleValue === 'page-fit' ||
|
|
currentScaleValue === 'page-width') {
|
|
// Note: the scale is constant for 'page-actual'.
|
|
pdfViewer.currentScaleValue = currentScaleValue;
|
|
}
|
|
pdfViewer.update();
|
|
}
|
|
|
|
function webViewerHashchange(evt) {
|
|
if (PDFViewerApplication.pdfHistory.isHashChangeUnlocked) {
|
|
let hash = evt.hash;
|
|
if (!hash) {
|
|
return;
|
|
}
|
|
if (!PDFViewerApplication.isInitialViewSet) {
|
|
PDFViewerApplication.initialBookmark = hash;
|
|
} else {
|
|
PDFViewerApplication.pdfLinkService.setHash(hash);
|
|
}
|
|
}
|
|
}
|
|
|
|
let webViewerFileInputChange;
|
|
if (typeof PDFJSDev === 'undefined' || PDFJSDev.test('GENERIC')) {
|
|
webViewerFileInputChange = function webViewerFileInputChange(evt) {
|
|
let file = evt.fileInput.files[0];
|
|
|
|
if (!PDFJS.disableCreateObjectURL && URL.createObjectURL) {
|
|
PDFViewerApplication.open(URL.createObjectURL(file));
|
|
} else {
|
|
// Read the local file into a Uint8Array.
|
|
let fileReader = new FileReader();
|
|
fileReader.onload = function webViewerChangeFileReaderOnload(evt) {
|
|
let buffer = evt.target.result;
|
|
PDFViewerApplication.open(new Uint8Array(buffer));
|
|
};
|
|
fileReader.readAsArrayBuffer(file);
|
|
}
|
|
|
|
PDFViewerApplication.setTitleUsingUrl(file.name);
|
|
|
|
// URL does not reflect proper document location - hiding some icons.
|
|
let appConfig = PDFViewerApplication.appConfig;
|
|
appConfig.toolbar.viewBookmark.setAttribute('hidden', 'true');
|
|
appConfig.secondaryToolbar.viewBookmarkButton.setAttribute('hidden',
|
|
'true');
|
|
appConfig.toolbar.download.setAttribute('hidden', 'true');
|
|
appConfig.secondaryToolbar.downloadButton.setAttribute('hidden', 'true');
|
|
};
|
|
}
|
|
|
|
function webViewerPresentationMode() {
|
|
PDFViewerApplication.requestPresentationMode();
|
|
}
|
|
function webViewerOpenFile() {
|
|
let 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 webViewerNextPage() {
|
|
PDFViewerApplication.page++;
|
|
}
|
|
function webViewerPreviousPage() {
|
|
PDFViewerApplication.page--;
|
|
}
|
|
function webViewerZoomIn() {
|
|
PDFViewerApplication.zoomIn();
|
|
}
|
|
function webViewerZoomOut() {
|
|
PDFViewerApplication.zoomOut();
|
|
}
|
|
function webViewerPageNumberChanged(evt) {
|
|
let pdfViewer = PDFViewerApplication.pdfViewer;
|
|
pdfViewer.currentPageLabel = evt.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 (evt.value !== pdfViewer.currentPageNumber.toString() &&
|
|
evt.value !== pdfViewer.currentPageLabel) {
|
|
PDFViewerApplication.toolbar.setPageNumber(
|
|
pdfViewer.currentPageNumber, pdfViewer.currentPageLabel);
|
|
}
|
|
}
|
|
function webViewerScaleChanged(evt) {
|
|
PDFViewerApplication.pdfViewer.currentScaleValue = evt.value;
|
|
}
|
|
function webViewerRotateCw() {
|
|
PDFViewerApplication.rotatePages(90);
|
|
}
|
|
function webViewerRotateCcw() {
|
|
PDFViewerApplication.rotatePages(-90);
|
|
}
|
|
function webViewerDocumentProperties() {
|
|
PDFViewerApplication.pdfDocumentProperties.open();
|
|
}
|
|
|
|
function webViewerFind(evt) {
|
|
PDFViewerApplication.findController.executeCommand('find' + evt.type, {
|
|
query: evt.query,
|
|
phraseSearch: evt.phraseSearch,
|
|
caseSensitive: evt.caseSensitive,
|
|
highlightAll: evt.highlightAll,
|
|
findPrevious: evt.findPrevious,
|
|
});
|
|
}
|
|
|
|
function webViewerFindFromUrlHash(evt) {
|
|
PDFViewerApplication.findController.executeCommand('find', {
|
|
query: evt.query,
|
|
phraseSearch: evt.phraseSearch,
|
|
caseSensitive: false,
|
|
highlightAll: true,
|
|
findPrevious: false,
|
|
});
|
|
}
|
|
|
|
function webViewerScaleChanging(evt) {
|
|
PDFViewerApplication.toolbar.setPageScale(evt.presetValue, evt.scale);
|
|
|
|
PDFViewerApplication.pdfViewer.update();
|
|
}
|
|
|
|
function webViewerPageChanging(evt) {
|
|
let page = evt.pageNumber;
|
|
|
|
PDFViewerApplication.toolbar.setPageNumber(page, evt.pageLabel || null);
|
|
PDFViewerApplication.secondaryToolbar.setPageNumber(page);
|
|
|
|
if (PDFViewerApplication.pdfSidebar.isThumbnailViewVisible) {
|
|
PDFViewerApplication.pdfThumbnailViewer.scrollThumbnailIntoView(page);
|
|
}
|
|
|
|
// we need to update stats
|
|
if (PDFJS.pdfBug && Stats.enabled) {
|
|
let pageView = PDFViewerApplication.pdfViewer.getPageView(page - 1);
|
|
if (pageView.stats) {
|
|
Stats.add(page, pageView.stats);
|
|
}
|
|
}
|
|
}
|
|
|
|
let zoomDisabled = false, zoomDisabledTimeout;
|
|
function webViewerWheel(evt) {
|
|
let pdfViewer = PDFViewerApplication.pdfViewer;
|
|
if (pdfViewer.isInPresentationMode) {
|
|
return;
|
|
}
|
|
|
|
if (evt.ctrlKey || evt.metaKey) {
|
|
let 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;
|
|
}
|
|
|
|
let previousScale = pdfViewer.currentScale;
|
|
|
|
let delta = normalizeWheelEventDelta(evt);
|
|
|
|
const MOUSE_WHEEL_DELTA_PER_PAGE_SCALE = 3.0;
|
|
let ticks = delta * MOUSE_WHEEL_DELTA_PER_PAGE_SCALE;
|
|
if (ticks < 0) {
|
|
PDFViewerApplication.zoomOut(-ticks);
|
|
} else {
|
|
PDFViewerApplication.zoomIn(ticks);
|
|
}
|
|
|
|
let 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.
|
|
let scaleCorrectionFactor = currentScale / previousScale - 1;
|
|
let rect = pdfViewer.container.getBoundingClientRect();
|
|
let dx = evt.clientX - rect.left;
|
|
let 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);
|
|
}
|
|
}
|
|
|
|
function webViewerClick(evt) {
|
|
if (!PDFViewerApplication.secondaryToolbar.isOpen) {
|
|
return;
|
|
}
|
|
let appConfig = PDFViewerApplication.appConfig;
|
|
if (PDFViewerApplication.pdfViewer.containsElement(evt.target) ||
|
|
(appConfig.toolbar.container.contains(evt.target) &&
|
|
evt.target !== appConfig.secondaryToolbar.toggleButton)) {
|
|
PDFViewerApplication.secondaryToolbar.close();
|
|
}
|
|
}
|
|
|
|
function webViewerKeyDown(evt) {
|
|
if (PDFViewerApplication.overlayManager.active) {
|
|
return;
|
|
}
|
|
|
|
let handled = false, ensureViewerFocused = false;
|
|
let cmd = (evt.ctrlKey ? 1 : 0) |
|
|
(evt.altKey ? 2 : 0) |
|
|
(evt.shiftKey ? 4 : 0) |
|
|
(evt.metaKey ? 8 : 0);
|
|
|
|
let pdfViewer = PDFViewerApplication.pdfViewer;
|
|
let 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) {
|
|
let 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;
|
|
|
|
case 38: // up arrow
|
|
if (isViewerInPresentationMode || PDFViewerApplication.page > 1) {
|
|
PDFViewerApplication.page = 1;
|
|
handled = true;
|
|
ensureViewerFocused = true;
|
|
}
|
|
break;
|
|
case 40: // down arrow
|
|
if (isViewerInPresentationMode ||
|
|
PDFViewerApplication.page < PDFViewerApplication.pagesCount) {
|
|
PDFViewerApplication.page = PDFViewerApplication.pagesCount;
|
|
handled = true;
|
|
ensureViewerFocused = true;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (typeof PDFJSDev === 'undefined' ||
|
|
!PDFJSDev.test('FIREFOX || MOZCENTRAL')) {
|
|
// CTRL or META without shift
|
|
if (cmd === 1 || cmd === 8) {
|
|
switch (evt.keyCode) {
|
|
case 83: // s
|
|
PDFViewerApplication.download();
|
|
handled = true;
|
|
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) {
|
|
if (ensureViewerFocused && !isViewerInPresentationMode) {
|
|
pdfViewer.focus();
|
|
}
|
|
evt.preventDefault();
|
|
return;
|
|
}
|
|
|
|
// Some shortcuts should not get handled if a control/input element
|
|
// is selected.
|
|
let curElement = document.activeElement || document.querySelector(':focus');
|
|
let 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;
|
|
}
|
|
}
|
|
|
|
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 */
|
|
/* falls through */
|
|
case 37: // left arrow
|
|
// horizontal scrolling using arrow keys
|
|
if (pdfViewer.isHorizontalScrollbarEnabled) {
|
|
break;
|
|
}
|
|
/* falls through */
|
|
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;
|
|
}
|
|
/* falls through */
|
|
case 39: // right arrow
|
|
// horizontal scrolling using arrow keys
|
|
if (pdfViewer.isHorizontalScrollbarEnabled) {
|
|
break;
|
|
}
|
|
/* falls through */
|
|
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 83: // 's'
|
|
PDFViewerApplication.pdfCursorTools.switchTool(CursorTool.SELECT);
|
|
break;
|
|
case 72: // 'h'
|
|
PDFViewerApplication.pdfCursorTools.switchTool(CursorTool.HAND);
|
|
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();
|
|
}
|
|
}
|
|
|
|
/* Abstract factory for the print service. */
|
|
let PDFPrintServiceFactory = {
|
|
instance: {
|
|
supportsPrinting: false,
|
|
createPrintService() {
|
|
throw new Error('Not implemented: createPrintService');
|
|
},
|
|
},
|
|
};
|
|
|
|
export {
|
|
PDFViewerApplication,
|
|
DefaultExternalServices,
|
|
PDFPrintServiceFactory,
|
|
};
|