/* Copyright 2012 Mozilla Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* globals PDFBug, Stats */
import {
animationStarted, DEFAULT_SCALE_VALUE, getPDFFileNameFromURL, isFileSchema,
isValidRotation, MAX_SCALE, MIN_SCALE, noContextMenuHandler,
normalizeWheelEventDelta, parseQueryString, PresentationModeState,
ProgressBar, RendererType, TextLayerMode
} from './ui_utils';
import {
build, createBlob, getDocument, getFilenameFromUrl, GlobalWorkerOptions,
InvalidPDFException, LinkTarget, MissingPDFException, OPS, PDFJS, PDFWorker,
shadow, UnexpectedResponseException, UNSUPPORTED_FEATURES, version
} from 'pdfjs-lib';
import { CursorTool, PDFCursorTools } from './pdf_cursor_tools';
import { PDFRenderingQueue, RenderingStates } from './pdf_rendering_queue';
import { PDFSidebar, SidebarView } from './pdf_sidebar';
import { getGlobalEventBus } from './dom_events';
import { OverlayManager } from './overlay_manager';
import { PasswordPrompt } from './password_prompt';
import { PDFAttachmentViewer } from './pdf_attachment_viewer';
import { PDFDocumentProperties } from './pdf_document_properties';
import { PDFFindBar } from './pdf_find_bar';
import { PDFFindController } from './pdf_find_controller';
import { PDFHistory } from './pdf_history';
import { PDFLinkService } from './pdf_link_service';
import { PDFOutlineViewer } from './pdf_outline_viewer';
import { PDFPresentationMode } from './pdf_presentation_mode';
import { PDFSidebarResizer } from './pdf_sidebar_resizer';
import { PDFThumbnailViewer } from './pdf_thumbnail_viewer';
import { PDFViewer } from './pdf_viewer';
import { SecondaryToolbar } from './secondary_toolbar';
import { Toolbar } from './toolbar';
import { viewerCompatibilityParams } from './viewer_compatibility';
import { ViewHistory } from './view_history';
const DEFAULT_SCALE_DELTA = 1.1;
const DISABLE_AUTO_FETCH_LOADING_BAR_TIMEOUT = 5000;
function configure(PDFJS) {
PDFJS.imageResourcesPath = './images/';
if (typeof PDFJSDev !== 'undefined' &&
PDFJSDev.test('FIREFOX || MOZCENTRAL || GENERIC || CHROME')) {
GlobalWorkerOptions.workerSrc = '../build/pdf.worker.js';
}
if (typeof PDFJSDev === 'undefined' || !PDFJSDev.test('PRODUCTION')) {
PDFJS.cMapUrl = '../external/bcmaps/';
GlobalWorkerOptions.workerSrc = '../src/worker_loader.js';
} else {
PDFJS.cMapUrl = '../web/cmaps/';
}
PDFJS.cMapPacked = true;
}
const DefaultExternalServices = {
updateFindControlState(data) {},
initPassiveLoading(callbacks) {},
fallback(data, callback) {},
reportTelemetry(data) {},
createDownloadManager() {
throw new Error('Not implemented: createDownloadManager');
},
createPreferences() {
throw new Error('Not implemented: createPreferences');
},
createL10n() {
throw new Error('Not implemented: createL10n');
},
supportsIntegratedFind: false,
supportsDocumentFonts: true,
supportsDocumentColors: true,
supportedMouseWheelZoomModifierKeys: {
ctrlKey: true,
metaKey: true,
},
};
let PDFViewerApplication = {
initialBookmark: document.location.hash.substring(1),
initialized: false,
fellback: false,
appConfig: null,
pdfDocument: null,
pdfLoadingTask: null,
printService: null,
/** @type {PDFViewer} */
pdfViewer: null,
/** @type {PDFThumbnailViewer} */
pdfThumbnailViewer: null,
/** @type {PDFRenderingQueue} */
pdfRenderingQueue: null,
/** @type {PDFPresentationMode} */
pdfPresentationMode: null,
/** @type {PDFDocumentProperties} */
pdfDocumentProperties: null,
/** @type {PDFLinkService} */
pdfLinkService: null,
/** @type {PDFHistory} */
pdfHistory: null,
/** @type {PDFSidebar} */
pdfSidebar: null,
/** @type {PDFSidebarResizer} */
pdfSidebarResizer: null,
/** @type {PDFOutlineViewer} */
pdfOutlineViewer: null,
/** @type {PDFAttachmentViewer} */
pdfAttachmentViewer: null,
/** @type {PDFCursorTools} */
pdfCursorTools: null,
/** @type {ViewHistory} */
store: null,
/** @type {DownloadManager} */
downloadManager: null,
/** @type {OverlayManager} */
overlayManager: null,
/** @type {Preferences} */
preferences: null,
/** @type {Toolbar} */
toolbar: null,
/** @type {SecondaryToolbar} */
secondaryToolbar: null,
/** @type {EventBus} */
eventBus: null,
/** @type {IL10n} */
l10n: null,
isInitialViewSet: false,
downloadComplete: false,
viewerPrefs: {
enableWebGL: false,
sidebarViewOnLoad: SidebarView.NONE,
pdfBugEnabled: false,
showPreviousViewOnLoad: true,
defaultZoomValue: '',
disablePageMode: false,
disablePageLabels: false,
renderer: 'canvas',
textLayerMode: TextLayerMode.ENABLE,
renderInteractiveForms: false,
enablePrintAutoRotate: false,
},
isViewerEmbedded: (window.parent !== window),
url: '',
baseUrl: '',
externalServices: DefaultExternalServices,
_boundEvents: {},
contentDispositionFilename: null,
// Called once when the document is loaded.
initialize(appConfig) {
this.preferences = this.externalServices.createPreferences();
configure(PDFJS);
this.appConfig = appConfig;
return this._readPreferences().then(() => {
return this._parseHashParameters();
}).then(() => {
return this._initializeL10n();
}).then(() => {
return this._initializeViewerComponents();
}).then(() => {
// Bind the various event handlers *after* the viewer has been
// initialized, to prevent errors if an event arrives too soon.
this.bindEvents();
this.bindWindowEvents();
// We can start UI localization now.
let appContainer = appConfig.appContainer || document.documentElement;
this.l10n.translate(appContainer).then(() => {
// Dispatch the 'localized' event on the `eventBus` once the viewer
// has been fully initialized and translated.
this.eventBus.dispatch('localized');
});
if (this.isViewerEmbedded &&
PDFJS.externalLinkTarget === LinkTarget.NONE) {
// Prevent external links from "replacing" the viewer,
// when it's embedded in e.g. an iframe or an object.
PDFJS.externalLinkTarget = LinkTarget.TOP;
}
this.initialized = true;
});
},
/**
* @private
*/
_readPreferences() {
let { preferences, viewerPrefs, } = this;
return Promise.all([
preferences.get('enableWebGL').then(function resolved(value) {
viewerPrefs['enableWebGL'] = value;
}),
preferences.get('sidebarViewOnLoad').then(function resolved(value) {
viewerPrefs['sidebarViewOnLoad'] = value;
}),
preferences.get('pdfBugEnabled').then(function resolved(value) {
viewerPrefs['pdfBugEnabled'] = value;
}),
preferences.get('showPreviousViewOnLoad').then(function resolved(value) {
viewerPrefs['showPreviousViewOnLoad'] = value;
}),
preferences.get('defaultZoomValue').then(function resolved(value) {
viewerPrefs['defaultZoomValue'] = value;
}),
preferences.get('textLayerMode').then(function resolved(value) {
if (viewerPrefs['textLayerMode'] === TextLayerMode.DISABLE) {
return;
}
viewerPrefs['textLayerMode'] = value;
}),
preferences.get('disableRange').then(function resolved(value) {
if (PDFJS.disableRange === true) {
return;
}
PDFJS.disableRange = value;
}),
preferences.get('disableStream').then(function resolved(value) {
if (PDFJS.disableStream === true) {
return;
}
PDFJS.disableStream = value;
}),
preferences.get('disableAutoFetch').then(function resolved(value) {
PDFJS.disableAutoFetch = value;
}),
preferences.get('disableFontFace').then(function resolved(value) {
if (PDFJS.disableFontFace === true) {
return;
}
PDFJS.disableFontFace = value;
}),
preferences.get('useOnlyCssZoom').then(function resolved(value) {
PDFJS.useOnlyCssZoom = value;
}),
preferences.get('externalLinkTarget').then(function resolved(value) {
if (PDFJS.externalLinkTarget !== LinkTarget.NONE) {
return;
}
PDFJS.externalLinkTarget = value;
}),
preferences.get('renderer').then(function resolved(value) {
viewerPrefs['renderer'] = value;
}),
preferences.get('renderInteractiveForms').then(function resolved(value) {
viewerPrefs['renderInteractiveForms'] = value;
}),
preferences.get('disablePageMode').then(function resolved(value) {
viewerPrefs['disablePageMode'] = value;
}),
preferences.get('disablePageLabels').then(function resolved(value) {
viewerPrefs['disablePageLabels'] = value;
}),
preferences.get('enablePrintAutoRotate').then(function resolved(value) {
viewerPrefs['enablePrintAutoRotate'] = value;
}),
]).catch(function(reason) { });
},
/**
* @private
*/
_parseHashParameters() {
let { appConfig, viewerPrefs, } = this;
let waitOn = [];
if (typeof PDFJSDev === 'undefined' || !PDFJSDev.test('PRODUCTION') ||
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 &&
hashParams['disableworker'] === 'true') {
waitOn.push(loadFakeWorker());
}
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) {
viewerPrefs['enableWebGL'] = (hashParams['webgl'] === 'true');
}
if ('useonlycsszoom' in hashParams) {
PDFJS.useOnlyCssZoom = (hashParams['useonlycsszoom'] === 'true');
}
if ('verbosity' in hashParams) {
PDFJS.verbosity = hashParams['verbosity'] | 0;
}
if ((typeof PDFJSDev === 'undefined' || !PDFJSDev.test('PRODUCTION')) &&
hashParams['disablebcmaps'] === 'true') {
PDFJS.cMapUrl = '../external/cmaps/';
PDFJS.cMapPacked = false;
}
if ('textlayer' in hashParams) {
switch (hashParams['textlayer']) {
case 'off':
viewerPrefs['textLayerMode'] = TextLayerMode.DISABLE;
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 enabled = hashParams['pdfbug'].split(',');
waitOn.push(loadAndEnablePDFBug(enabled));
}
// Locale can be changed only when special debugging flags is present in
// the hash section of the URL, or development version of viewer is used.
// It is not possible to change locale for Firefox extension builds.
if ((typeof PDFJSDev === 'undefined' || !PDFJSDev.test('PRODUCTION') ||
!PDFJSDev.test('FIREFOX || MOZCENTRAL')) && 'locale' in hashParams) {
PDFJS.locale = hashParams['locale'];
}
}
return Promise.all(waitOn);
},
/**
* @private
*/
_initializeL10n() {
this.l10n = this.externalServices.createL10n({
locale: PDFJS.locale,
});
return this.l10n.getDirection().then((dir) => {
document.getElementsByTagName('html')[0].dir = dir;
});
},
/**
* @private
*/
_initializeViewerComponents() {
let { appConfig, viewerPrefs, } = this;
return new Promise((resolve, reject) => {
this.overlayManager = new OverlayManager();
let eventBus = appConfig.eventBus || getGlobalEventBus();
this.eventBus = eventBus;
let pdfRenderingQueue = new PDFRenderingQueue();
pdfRenderingQueue.onIdle = this.cleanup.bind(this);
this.pdfRenderingQueue = pdfRenderingQueue;
let pdfLinkService = new PDFLinkService({
eventBus,
externalLinkTarget: PDFJS.externalLinkTarget,
externalLinkRel: PDFJS.externalLinkRel,
});
this.pdfLinkService = pdfLinkService;
let downloadManager = this.externalServices.createDownloadManager();
this.downloadManager = downloadManager;
let container = appConfig.mainContainer;
let viewer = appConfig.viewerContainer;
this.pdfViewer = new PDFViewer({
container,
viewer,
eventBus,
renderingQueue: pdfRenderingQueue,
linkService: pdfLinkService,
downloadManager,
renderer: viewerPrefs['renderer'],
enableWebGL: viewerPrefs['enableWebGL'],
l10n: this.l10n,
textLayerMode: viewerPrefs['textLayerMode'],
imageResourcesPath: PDFJS.imageResourcesPath,
renderInteractiveForms: viewerPrefs['renderInteractiveForms'],
enablePrintAutoRotate: viewerPrefs['enablePrintAutoRotate'],
useOnlyCssZoom: PDFJS.useOnlyCssZoom,
maxCanvasPixels: PDFJS.maxCanvasPixels,
});
pdfRenderingQueue.setViewer(this.pdfViewer);
pdfLinkService.setViewer(this.pdfViewer);
let thumbnailContainer = appConfig.sidebar.thumbnailView;
this.pdfThumbnailViewer = new PDFThumbnailViewer({
container: thumbnailContainer,
renderingQueue: pdfRenderingQueue,
linkService: pdfLinkService,
l10n: this.l10n,
});
pdfRenderingQueue.setThumbnailViewer(this.pdfThumbnailViewer);
this.pdfHistory = new PDFHistory({
linkService: pdfLinkService,
eventBus,
});
pdfLinkService.setHistory(this.pdfHistory);
this.findController = new PDFFindController({
pdfViewer: this.pdfViewer,
});
this.findController.onUpdateResultsCount = (matchCount) => {
if (this.supportsIntegratedFind) {
return;
}
this.findBar.updateResultsCount(matchCount);
};
this.findController.onUpdateState = (state, previous, matchCount) => {
if (this.supportsIntegratedFind) {
this.externalServices.updateFindControlState({
result: state,
findPrevious: previous,
});
} else {
this.findBar.updateUIState(state, previous, matchCount);
}
};
this.pdfViewer.setFindController(this.findController);
// TODO: improve `PDFFindBar` constructor parameter passing
let findBarConfig = Object.create(appConfig.findBar);
findBarConfig.findController = this.findController;
findBarConfig.eventBus = eventBus;
this.findBar = new PDFFindBar(findBarConfig, this.l10n);
this.pdfDocumentProperties =
new PDFDocumentProperties(appConfig.documentProperties,
this.overlayManager, this.l10n);
this.pdfCursorTools = new PDFCursorTools({
container,
eventBus,
preferences: this.preferences,
});
this.toolbar = new Toolbar(appConfig.toolbar, container, eventBus,
this.l10n);
this.secondaryToolbar =
new SecondaryToolbar(appConfig.secondaryToolbar, container, eventBus);
if (this.supportsFullscreen) {
this.pdfPresentationMode = new PDFPresentationMode({
container,
viewer,
pdfViewer: this.pdfViewer,
eventBus,
contextMenuItems: appConfig.fullscreen,
});
}
this.passwordPrompt = new PasswordPrompt(appConfig.passwordOverlay,
this.overlayManager, this.l10n);
this.pdfOutlineViewer = new PDFOutlineViewer({
container: appConfig.sidebar.outlineView,
eventBus,
linkService: pdfLinkService,
});
this.pdfAttachmentViewer = new PDFAttachmentViewer({
container: appConfig.sidebar.attachmentsView,
eventBus,
downloadManager,
});
// TODO: improve `PDFSidebar` constructor parameter passing
let sidebarConfig = Object.create(appConfig.sidebar);
sidebarConfig.pdfViewer = this.pdfViewer;
sidebarConfig.pdfThumbnailViewer = this.pdfThumbnailViewer;
sidebarConfig.pdfOutlineViewer = this.pdfOutlineViewer;
sidebarConfig.eventBus = eventBus;
this.pdfSidebar = new PDFSidebar(sidebarConfig, this.l10n);
this.pdfSidebar.onToggled = this.forceRendering.bind(this);
this.pdfSidebarResizer = new PDFSidebarResizer(appConfig.sidebarResizer,
eventBus, this.l10n);
resolve(undefined);
});
},
run(config) {
this.initialize(config).then(webViewerInitialized);
},
zoomIn(ticks) {
let newScale = this.pdfViewer.currentScale;
do {
newScale = (newScale * DEFAULT_SCALE_DELTA).toFixed(2);
newScale = Math.ceil(newScale * 10) / 10;
newScale = Math.min(MAX_SCALE, newScale);
} while (--ticks > 0 && newScale < MAX_SCALE);
this.pdfViewer.currentScaleValue = newScale;
},
zoomOut(ticks) {
let newScale = this.pdfViewer.currentScale;
do {
newScale = (newScale / DEFAULT_SCALE_DELTA).toFixed(2);
newScale = Math.floor(newScale * 10) / 10;
newScale = Math.max(MIN_SCALE, newScale);
} while (--ticks > 0 && newScale > MIN_SCALE);
this.pdfViewer.currentScaleValue = newScale;
},
get pagesCount() {
return this.pdfDocument ? this.pdfDocument.numPages : 0;
},
set page(val) {
this.pdfViewer.currentPageNumber = val;
},
get page() {
return this.pdfViewer.currentPageNumber;
},
get printing() {
return !!this.printService;
},
get supportsPrinting() {
return PDFPrintServiceFactory.instance.supportsPrinting;
},
get supportsFullscreen() {
let support;
if (typeof PDFJSDev !== 'undefined' && PDFJSDev.test('MOZCENTRAL')) {
support = document.fullscreenEnabled === true ||
document.mozFullScreenEnabled === true;
} else {
let doc = document.documentElement;
support = !!(doc.requestFullscreen || doc.mozRequestFullScreen ||
doc.webkitRequestFullScreen || doc.msRequestFullscreen);
if (document.fullscreenEnabled === false ||
document.mozFullScreenEnabled === false ||
document.webkitFullscreenEnabled === false ||
document.msFullscreenEnabled === false) {
support = false;
}
}
if (support && viewerCompatibilityParams['disableFullscreen'] === true) {
support = false;
}
return shadow(this, 'supportsFullscreen', support);
},
get supportsIntegratedFind() {
return this.externalServices.supportsIntegratedFind;
},
get supportsDocumentFonts() {
return this.externalServices.supportsDocumentFonts;
},
get supportsDocumentColors() {
return this.externalServices.supportsDocumentColors;
},
get loadingBar() {
let bar = new ProgressBar('#loadingBar');
return shadow(this, 'loadingBar', bar);
},
get supportedMouseWheelZoomModifierKeys() {
return this.externalServices.supportedMouseWheelZoomModifierKeys;
},
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.url = '';
this.baseUrl = '';
this.contentDispositionFilename = null;
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 (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);
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('PRODUCTION')) {
parameters.docBaseUrl = document.URL.split('#')[0];
} else if (typeof PDFJSDev !== 'undefined' &&
PDFJSDev.test('FIREFOX || MOZCENTRAL || CHROME')) {
parameters.docBaseUrl = this.baseUrl;
}
if (args) {
for (let prop in args) {
if (prop === 'length') {
this.pdfDocumentProperties.setFileSize(args[prop]);
}
parameters[prop] = args[prop];
}
}
if (this.url && isFileSchema(this.url)) {
let appConfig = this.appConfig;
appConfig.toolbar.download.setAttribute('hidden', 'true');
appConfig.secondaryToolbar.downloadButton.setAttribute('hidden', 'true');
}
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);
}, (exception) => {
if (loadingTask !== this.pdfLoadingTask) {
return; // Ignore errors for previously opened PDF files.
}
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 = this.contentDispositionFilename ||
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 {
Promise.all(moreInfoText).then((parts) => {
console.error(message + '\n' + parts.join('\n'));
});
this.fallback();
}
},
progress(level) {
if (this.downloadComplete) {
// Don't accidentally show the loading bar again when the entire file has
// already been fetched (only an issue when disableAutoFetch is enabled).
return;
}
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) {
this.pdfDocument = pdfDocument;
pdfDocument.getDownloadInfo().then(() => {
this.downloadComplete = true;
this.loadingBar.hide();
firstPagePromise.then(() => {
this.eventBus.dispatch('documentload', { source: this, });
});
});
// Since the `setInitialView` call below depends on this being resolved,
// fetch it early to avoid delaying initial rendering of the PDF document.
let pageModePromise = pdfDocument.getPageMode().catch(
function() { /* Avoid breaking initial rendering; ignoring errors. */ });
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.
let resetHistory = !this.viewerPrefs['showPreviousViewOnLoad'];
this.pdfHistory.initialize(id, resetHistory);
if (this.pdfHistory.initialBookmark) {
this.initialBookmark = this.pdfHistory.initialBookmark;
this.initialRotation = this.pdfHistory.initialRotation;
}
}
let initialParams = {
bookmark: null,
hash: null,
};
let storePromise = store.getMultiple({
exists: false,
page: '1',
zoom: DEFAULT_SCALE_VALUE,
scrollLeft: '0',
scrollTop: '0',
rotation: null,
sidebarView: SidebarView.NONE,
}).catch(() => { /* Unable to read from storage; ignoring errors. */ });
Promise.all([storePromise, pageModePromise]).then(
([values = {}, pageMode]) => {
// Initialize the default values, from user preferences.
let hash = this.viewerPrefs['defaultZoomValue'] ?
('zoom=' + this.viewerPrefs['defaultZoomValue']) : null;
let rotation = 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;
rotation = parseInt(values.rotation, 10);
sidebarView = sidebarView || (values.sidebarView | 0);
}
if (pageMode && !this.viewerPrefs['disablePageMode']) {
// Always let the user preference/history take precedence.
sidebarView = sidebarView || apiPageModeToSidebarView(pageMode);
}
return {
hash,
rotation,
sidebarView,
};
}).then(({ hash, rotation, sidebarView, }) => {
initialParams.bookmark = this.initialBookmark;
initialParams.hash = hash;
this.setInitialView(hash, { rotation, sidebarView, });
// 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.bookmark && !initialParams.hash) {
return;
}
if (pdfViewer.hasEqualPageSizes) {
return;
}
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) {
return;
}
javaScript.some((js) => {
if (!js) { // Don't warn/fallback for empty JavaScript actions.
return false;
}
console.warn('Warning: JavaScript is not supported');
this.fallback(UNSUPPORTED_FEATURES.javaScript);
return true;
});
// 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, contentDispositionFilename, }) => {
this.documentInfo = info;
this.metadata = metadata;
this.contentDispositionFilename = contentDispositionFilename;
// Provides some basic debug information
console.log('PDF ' + pdfDocument.fingerprint + ' [' +
info.PDFFormatVersion + ' ' + (info.Producer || '-').trim() +
' / ' + (info.Creator || '-').trim() + ']' +
' (PDF.js: ' + (version || '-') +
(this.viewerPrefs['enableWebGL'] ? ' [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} - ${contentDispositionFilename || document.title}`);
} else if (contentDispositionFilename) {
this.setTitle(contentDispositionFilename);
}
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.includes(s)) {
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, { rotation, sidebarView, } = {}) {
let setRotation = (angle) => {
if (isValidRotation(angle)) {
this.pdfViewer.pagesRotation = angle;
}
};
this.isInitialViewSet = true;
this.pdfSidebar.setInitialView(sidebarView);
if (this.initialBookmark) {
setRotation(this.initialRotation);
delete this.initialRotation;
this.pdfLinkService.setHash(this.initialBookmark);
this.initialBookmark = null;
} else if (storedHash) {
setRotation(rotation);
this.pdfLinkService.setHash(storedHash);
}
// 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 newRotation = (this.pdfViewer.pagesRotation + 360 + delta) % 360;
this.pdfViewer.pagesRotation = newRotation;
// Note that the thumbnail viewer is updated, and rendering is triggered,
// in the 'rotationchanging' event handler.
},
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('rotationchanging', webViewerRotationChanging);
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', { source: window, });
};
_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);
},
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('rotationchanging', webViewerRotationChanging);
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);
_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.includes(viewerOrigin)) {
// 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 loadFakeWorker() {
return new Promise(function(resolve, reject) {
if (typeof PDFJSDev === 'undefined' || !PDFJSDev.test('PRODUCTION')) {
if (typeof SystemJS === 'object') {
SystemJS.import('pdfjs/core/worker').then((worker) => {
window.pdfjsNonProductionPdfWorker = worker;
resolve();
});
} else if (typeof require === 'function') {
window.pdfjsNonProductionPdfWorker = require('../src/core/worker.js');
resolve();
} else {
reject(new Error(
'SystemJS or CommonJS must be used to load fake worker.'));
}
} else {
let script = document.createElement('script');
script.src = PDFWorker.getWorkerSrc();
script.onload = function() {
resolve();
};
script.onerror = function() {
reject(new Error(`Cannot load fake worker at: ${script.src}`));
};
(document.head || document.documentElement).appendChild(script);
}
});
}
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({
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;
}
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;
}
fileInput.addEventListener('change', function(evt) {
let files = evt.target.files;
if (!files || files.length === 0) {
return;
}
PDFViewerApplication.eventBus.dispatch('fileinputchange', {
fileInput: evt.target,
});
});
} else {
appConfig.toolbar.openFile.setAttribute('hidden', 'true');
appConfig.secondaryToolbar.openFileButton.setAttribute('hidden', 'true');
}
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.mainContainer.addEventListener('transitionend', function(evt) {
if (evt.target === /* mainContainer */ this) {
PDFViewerApplication.eventBus.dispatch('resize', { source: this, });
}
}, true);
appConfig.sidebar.toggleButton.addEventListener('click', function() {
PDFViewerApplication.pdfSidebar.toggle();
});
Promise.resolve().then(function() {
webViewerOpenFileViaURL(file);
}).catch(function(reason) {
PDFViewerApplication.l10n.get('loading_error', null,
'An error occurred while loading the PDF.').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) {
throw 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 webViewerOpenFileViaURL(file) {
if (file) {
throw new Error('Not implemented: webViewerOpenFileViaURL');
}
};
}
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 (typeof Stats !== 'undefined' && 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,
'rotation': location.rotation,
}).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;
// 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) {
let hash = evt.hash;
if (!hash) {
return;
}
if (!PDFViewerApplication.isInitialViewSet) {
PDFViewerApplication.initialBookmark = hash;
} else if (!PDFViewerApplication.pdfHistory.popStateInProgress) {
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() {
if (typeof PDFJSDev === 'undefined' || PDFJSDev.test('GENERIC')) {
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 webViewerRotationChanging(evt) {
PDFViewerApplication.pdfThumbnailViewer.pagesRotation = evt.pagesRotation;
PDFViewerApplication.forceRendering();
// Ensure that the active page doesn't change during rotation.
PDFViewerApplication.pdfViewer.currentPageNumber = evt.pageNumber;
}
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 (typeof Stats !== 'undefined' && Stats.enabled) {
let pageView = PDFViewerApplication.pdfViewer.getPageView(page - 1);
if (pageView && 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 13: // enter key
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 13: // enter key
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 (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();
}
}
/**
* Converts API PageMode values to the format used by `PDFSidebar`.
* NOTE: There's also a "FullScreen" parameter which is not possible to support,
* since the Fullscreen API used in browsers requires that entering
* fullscreen mode only occurs as a result of a user-initiated event.
* @param {string} mode - The API PageMode value.
* @returns {number} A value from {SidebarView}.
*/
function apiPageModeToSidebarView(mode) {
switch (mode) {
case 'UseNone':
return SidebarView.NONE;
case 'UseThumbs':
return SidebarView.THUMBS;
case 'UseOutlines':
return SidebarView.OUTLINE;
case 'UseAttachments':
return SidebarView.ATTACHMENTS;
case 'UseOC':
// Not implemented, since we don't support Optional Content Groups yet.
}
return SidebarView.NONE; // Default value.
}
/* Abstract factory for the print service. */
let PDFPrintServiceFactory = {
instance: {
supportsPrinting: false,
createPrintService() {
throw new Error('Not implemented: createPrintService');
},
},
};
export {
PDFViewerApplication,
DefaultExternalServices,
PDFPrintServiceFactory,
};