e46055a92c
Given that the default viewer only uses the "page stats" when debugging is enabled, it seems much simpler and more straightforward to simply query the API *directly* when this information is actually required. That way, there's a bit less information that needs to be stored/updated on each `PDFPageView`-instance. Finally, since the `EventBus` now exists, we no longer need to handle the "page stats"-case in the regular listeners in `web/app.js`, but can instead add special "page stats"-listeners only when debugging is enabled.
3085 lines
95 KiB
JavaScript
3085 lines
95 KiB
JavaScript
/* 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,
|
|
AutoPrintRegExp,
|
|
DEFAULT_SCALE_VALUE,
|
|
EventBus,
|
|
getPDFFileNameFromURL,
|
|
isValidRotation,
|
|
isValidScrollMode,
|
|
isValidSpreadMode,
|
|
MAX_SCALE,
|
|
MIN_SCALE,
|
|
noContextMenuHandler,
|
|
normalizeWheelEventDirection,
|
|
parseQueryString,
|
|
PresentationModeState,
|
|
ProgressBar,
|
|
RendererType,
|
|
ScrollMode,
|
|
SpreadMode,
|
|
TextLayerMode,
|
|
} from "./ui_utils.js";
|
|
import { AppOptions, OptionKind } from "./app_options.js";
|
|
import {
|
|
build,
|
|
createPromiseCapability,
|
|
getDocument,
|
|
getFilenameFromUrl,
|
|
GlobalWorkerOptions,
|
|
InvalidPDFException,
|
|
LinkTarget,
|
|
loadScript,
|
|
MissingPDFException,
|
|
OPS,
|
|
PDFWorker,
|
|
PermissionFlag,
|
|
shadow,
|
|
UnexpectedResponseException,
|
|
UNSUPPORTED_FEATURES,
|
|
version,
|
|
} from "pdfjs-lib";
|
|
import { CursorTool, PDFCursorTools } from "./pdf_cursor_tools.js";
|
|
import { PDFRenderingQueue, RenderingStates } from "./pdf_rendering_queue.js";
|
|
import { PDFSidebar, SidebarView } from "./pdf_sidebar.js";
|
|
import { OverlayManager } from "./overlay_manager.js";
|
|
import { PasswordPrompt } from "./password_prompt.js";
|
|
import { PDFAttachmentViewer } from "./pdf_attachment_viewer.js";
|
|
import { PDFDocumentProperties } from "./pdf_document_properties.js";
|
|
import { PDFFindBar } from "./pdf_find_bar.js";
|
|
import { PDFFindController } from "./pdf_find_controller.js";
|
|
import { PDFHistory } from "./pdf_history.js";
|
|
import { PDFLayerViewer } from "./pdf_layer_viewer.js";
|
|
import { PDFLinkService } from "./pdf_link_service.js";
|
|
import { PDFOutlineViewer } from "./pdf_outline_viewer.js";
|
|
import { PDFPresentationMode } from "./pdf_presentation_mode.js";
|
|
import { PDFSidebarResizer } from "./pdf_sidebar_resizer.js";
|
|
import { PDFThumbnailViewer } from "./pdf_thumbnail_viewer.js";
|
|
import { PDFViewer } from "./pdf_viewer.js";
|
|
import { SecondaryToolbar } from "./secondary_toolbar.js";
|
|
import { Toolbar } from "./toolbar.js";
|
|
import { viewerCompatibilityParams } from "./viewer_compatibility.js";
|
|
import { ViewHistory } from "./view_history.js";
|
|
|
|
const DEFAULT_SCALE_DELTA = 1.1;
|
|
const DISABLE_AUTO_FETCH_LOADING_BAR_TIMEOUT = 5000; // ms
|
|
const FORCE_PAGES_LOADED_TIMEOUT = 10000; // ms
|
|
const WHEEL_ZOOM_DISABLED_TIMEOUT = 1000; // ms
|
|
const ENABLE_PERMISSIONS_CLASS = "enablePermissions";
|
|
|
|
const ViewOnLoad = {
|
|
UNKNOWN: -1,
|
|
PREVIOUS: 0, // Default value.
|
|
INITIAL: 1,
|
|
};
|
|
|
|
// Keep these in sync with mozilla-central's Histograms.json.
|
|
const KNOWN_VERSIONS = [
|
|
"1.0",
|
|
"1.1",
|
|
"1.2",
|
|
"1.3",
|
|
"1.4",
|
|
"1.5",
|
|
"1.6",
|
|
"1.7",
|
|
"1.8",
|
|
"1.9",
|
|
"2.0",
|
|
"2.1",
|
|
"2.2",
|
|
"2.3",
|
|
];
|
|
// Keep these in sync with mozilla-central's Histograms.json.
|
|
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",
|
|
];
|
|
|
|
class DefaultExternalServices {
|
|
constructor() {
|
|
throw new Error("Cannot initialize DefaultExternalServices.");
|
|
}
|
|
|
|
static updateFindControlState(data) {}
|
|
|
|
static updateFindMatchesCount(data) {}
|
|
|
|
static initPassiveLoading(callbacks) {}
|
|
|
|
static fallback(data, callback) {}
|
|
|
|
static reportTelemetry(data) {}
|
|
|
|
static createDownloadManager(options) {
|
|
throw new Error("Not implemented: createDownloadManager");
|
|
}
|
|
|
|
static createPreferences() {
|
|
throw new Error("Not implemented: createPreferences");
|
|
}
|
|
|
|
static createL10n(options) {
|
|
throw new Error("Not implemented: createL10n");
|
|
}
|
|
|
|
static get supportsIntegratedFind() {
|
|
return shadow(this, "supportsIntegratedFind", false);
|
|
}
|
|
|
|
static get supportsDocumentFonts() {
|
|
return shadow(this, "supportsDocumentFonts", true);
|
|
}
|
|
|
|
static get supportedMouseWheelZoomModifierKeys() {
|
|
return shadow(this, "supportedMouseWheelZoomModifierKeys", {
|
|
ctrlKey: true,
|
|
metaKey: true,
|
|
});
|
|
}
|
|
|
|
static get isInAutomation() {
|
|
return shadow(this, "isInAutomation", false);
|
|
}
|
|
}
|
|
|
|
const PDFViewerApplication = {
|
|
initialBookmark: document.location.hash.substring(1),
|
|
_initializedCapability: createPromiseCapability(),
|
|
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 {PDFLayerViewer} */
|
|
pdfLayerViewer: 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,
|
|
isViewerEmbedded: window.parent !== window,
|
|
url: "",
|
|
baseUrl: "",
|
|
externalServices: DefaultExternalServices,
|
|
_boundEvents: {},
|
|
contentDispositionFilename: null,
|
|
triggerDelayedFallback: null,
|
|
_saveInProgress: false,
|
|
_wheelUnusedTicks: 0,
|
|
|
|
// Called once when the document is loaded.
|
|
async initialize(appConfig) {
|
|
this.preferences = this.externalServices.createPreferences();
|
|
this.appConfig = appConfig;
|
|
|
|
await this._readPreferences();
|
|
await this._parseHashParameters();
|
|
await this._initializeL10n();
|
|
|
|
if (
|
|
this.isViewerEmbedded &&
|
|
AppOptions.get("externalLinkTarget") === LinkTarget.NONE
|
|
) {
|
|
// Prevent external links from "replacing" the viewer,
|
|
// when it's embedded in e.g. an <iframe> or an <object>.
|
|
AppOptions.set("externalLinkTarget", LinkTarget.TOP);
|
|
}
|
|
await this._initializeViewerComponents();
|
|
|
|
// 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.
|
|
const 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", { source: this });
|
|
});
|
|
|
|
this._initializedCapability.resolve();
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
async _readPreferences() {
|
|
if (
|
|
(typeof PDFJSDev === "undefined" ||
|
|
PDFJSDev.test("!PRODUCTION || GENERIC")) &&
|
|
AppOptions.get("disablePreferences")
|
|
) {
|
|
// Give custom implementations of the default viewer a simpler way to
|
|
// opt-out of having the `Preferences` override existing `AppOptions`.
|
|
return;
|
|
}
|
|
try {
|
|
const prefs = await this.preferences.getAll();
|
|
for (const name in prefs) {
|
|
AppOptions.set(name, prefs[name]);
|
|
}
|
|
} catch (reason) {
|
|
console.error(`_readPreferences: "${reason.message}".`);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Potentially parse special debugging flags in the hash section of the URL.
|
|
* @private
|
|
*/
|
|
async _parseHashParameters() {
|
|
if (!AppOptions.get("pdfBugEnabled")) {
|
|
return undefined;
|
|
}
|
|
const hash = document.location.hash.substring(1);
|
|
if (!hash) {
|
|
return undefined;
|
|
}
|
|
const hashParams = parseQueryString(hash),
|
|
waitOn = [];
|
|
|
|
if ("disableworker" in hashParams && hashParams.disableworker === "true") {
|
|
waitOn.push(loadFakeWorker());
|
|
}
|
|
if ("disablerange" in hashParams) {
|
|
AppOptions.set("disableRange", hashParams.disablerange === "true");
|
|
}
|
|
if ("disablestream" in hashParams) {
|
|
AppOptions.set("disableStream", hashParams.disablestream === "true");
|
|
}
|
|
if ("disableautofetch" in hashParams) {
|
|
AppOptions.set(
|
|
"disableAutoFetch",
|
|
hashParams.disableautofetch === "true"
|
|
);
|
|
}
|
|
if ("disablefontface" in hashParams) {
|
|
AppOptions.set("disableFontFace", hashParams.disablefontface === "true");
|
|
}
|
|
if ("disablehistory" in hashParams) {
|
|
AppOptions.set("disableHistory", hashParams.disablehistory === "true");
|
|
}
|
|
if ("webgl" in hashParams) {
|
|
AppOptions.set("enableWebGL", hashParams.webgl === "true");
|
|
}
|
|
if ("verbosity" in hashParams) {
|
|
AppOptions.set("verbosity", hashParams.verbosity | 0);
|
|
}
|
|
if ("textlayer" in hashParams) {
|
|
switch (hashParams.textlayer) {
|
|
case "off":
|
|
AppOptions.set("textLayerMode", TextLayerMode.DISABLE);
|
|
break;
|
|
case "visible":
|
|
case "shadow":
|
|
case "hover":
|
|
const viewer = this.appConfig.viewerContainer;
|
|
viewer.classList.add("textLayer-" + hashParams.textlayer);
|
|
break;
|
|
}
|
|
}
|
|
if ("pdfbug" in hashParams) {
|
|
AppOptions.set("pdfBug", true);
|
|
AppOptions.set("fontExtraProperties", true);
|
|
|
|
const enabled = hashParams.pdfbug.split(",");
|
|
waitOn.push(loadAndEnablePDFBug(enabled));
|
|
}
|
|
// It is not possible to change locale for the (various) extension builds.
|
|
if (
|
|
(typeof PDFJSDev === "undefined" ||
|
|
PDFJSDev.test("!PRODUCTION || GENERIC")) &&
|
|
"locale" in hashParams
|
|
) {
|
|
AppOptions.set("locale", hashParams.locale);
|
|
}
|
|
|
|
return Promise.all(waitOn).catch(reason => {
|
|
console.error(`_parseHashParameters: "${reason.message}".`);
|
|
});
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
async _initializeL10n() {
|
|
this.l10n = this.externalServices.createL10n(
|
|
typeof PDFJSDev === "undefined" || PDFJSDev.test("!PRODUCTION || GENERIC")
|
|
? { locale: AppOptions.get("locale") }
|
|
: null
|
|
);
|
|
const dir = await this.l10n.getDirection();
|
|
document.getElementsByTagName("html")[0].dir = dir;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
async _initializeViewerComponents() {
|
|
const appConfig = this.appConfig;
|
|
|
|
const eventBus =
|
|
appConfig.eventBus ||
|
|
new EventBus({ isInAutomation: this.externalServices.isInAutomation });
|
|
this.eventBus = eventBus;
|
|
|
|
this.overlayManager = new OverlayManager();
|
|
|
|
const pdfRenderingQueue = new PDFRenderingQueue();
|
|
pdfRenderingQueue.onIdle = this.cleanup.bind(this);
|
|
this.pdfRenderingQueue = pdfRenderingQueue;
|
|
|
|
const pdfLinkService = new PDFLinkService({
|
|
eventBus,
|
|
externalLinkTarget: AppOptions.get("externalLinkTarget"),
|
|
externalLinkRel: AppOptions.get("externalLinkRel"),
|
|
ignoreDestinationZoom: AppOptions.get("ignoreDestinationZoom"),
|
|
});
|
|
this.pdfLinkService = pdfLinkService;
|
|
|
|
const downloadManager = this.externalServices.createDownloadManager();
|
|
this.downloadManager = downloadManager;
|
|
|
|
const findController = new PDFFindController({
|
|
linkService: pdfLinkService,
|
|
eventBus,
|
|
});
|
|
this.findController = findController;
|
|
|
|
const container = appConfig.mainContainer;
|
|
const viewer = appConfig.viewerContainer;
|
|
this.pdfViewer = new PDFViewer({
|
|
container,
|
|
viewer,
|
|
eventBus,
|
|
renderingQueue: pdfRenderingQueue,
|
|
linkService: pdfLinkService,
|
|
downloadManager,
|
|
findController,
|
|
renderer: AppOptions.get("renderer"),
|
|
enableWebGL: AppOptions.get("enableWebGL"),
|
|
l10n: this.l10n,
|
|
textLayerMode: AppOptions.get("textLayerMode"),
|
|
imageResourcesPath: AppOptions.get("imageResourcesPath"),
|
|
renderInteractiveForms: AppOptions.get("renderInteractiveForms"),
|
|
enablePrintAutoRotate: AppOptions.get("enablePrintAutoRotate"),
|
|
useOnlyCssZoom: AppOptions.get("useOnlyCssZoom"),
|
|
maxCanvasPixels: AppOptions.get("maxCanvasPixels"),
|
|
});
|
|
pdfRenderingQueue.setViewer(this.pdfViewer);
|
|
pdfLinkService.setViewer(this.pdfViewer);
|
|
|
|
this.pdfThumbnailViewer = new PDFThumbnailViewer({
|
|
container: appConfig.sidebar.thumbnailView,
|
|
eventBus,
|
|
renderingQueue: pdfRenderingQueue,
|
|
linkService: pdfLinkService,
|
|
l10n: this.l10n,
|
|
});
|
|
pdfRenderingQueue.setThumbnailViewer(this.pdfThumbnailViewer);
|
|
|
|
this.pdfHistory = new PDFHistory({
|
|
linkService: pdfLinkService,
|
|
eventBus,
|
|
});
|
|
pdfLinkService.setHistory(this.pdfHistory);
|
|
|
|
if (!this.supportsIntegratedFind) {
|
|
this.findBar = new PDFFindBar(appConfig.findBar, eventBus, this.l10n);
|
|
}
|
|
|
|
this.pdfDocumentProperties = new PDFDocumentProperties(
|
|
appConfig.documentProperties,
|
|
this.overlayManager,
|
|
eventBus,
|
|
this.l10n
|
|
);
|
|
|
|
this.pdfCursorTools = new PDFCursorTools({
|
|
container,
|
|
eventBus,
|
|
cursorToolOnLoad: AppOptions.get("cursorToolOnLoad"),
|
|
});
|
|
|
|
this.toolbar = new Toolbar(appConfig.toolbar, eventBus, this.l10n);
|
|
|
|
this.secondaryToolbar = new SecondaryToolbar(
|
|
appConfig.secondaryToolbar,
|
|
container,
|
|
eventBus
|
|
);
|
|
|
|
if (this.supportsFullscreen) {
|
|
this.pdfPresentationMode = new PDFPresentationMode({
|
|
container,
|
|
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,
|
|
});
|
|
|
|
this.pdfLayerViewer = new PDFLayerViewer({
|
|
container: appConfig.sidebar.layersView,
|
|
eventBus,
|
|
l10n: this.l10n,
|
|
});
|
|
|
|
this.pdfSidebar = new PDFSidebar({
|
|
elements: appConfig.sidebar,
|
|
pdfViewer: this.pdfViewer,
|
|
pdfThumbnailViewer: this.pdfThumbnailViewer,
|
|
eventBus,
|
|
l10n: this.l10n,
|
|
});
|
|
this.pdfSidebar.onToggled = this.forceRendering.bind(this);
|
|
|
|
this.pdfSidebarResizer = new PDFSidebarResizer(
|
|
appConfig.sidebarResizer,
|
|
eventBus,
|
|
this.l10n
|
|
);
|
|
},
|
|
|
|
run(config) {
|
|
this.initialize(config).then(webViewerInitialized);
|
|
},
|
|
|
|
get initialized() {
|
|
return this._initializedCapability.settled;
|
|
},
|
|
|
|
get initializedPromise() {
|
|
return this._initializedCapability.promise;
|
|
},
|
|
|
|
zoomIn(ticks) {
|
|
if (this.pdfViewer.isInPresentationMode) {
|
|
return;
|
|
}
|
|
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) {
|
|
if (this.pdfViewer.isInPresentationMode) {
|
|
return;
|
|
}
|
|
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;
|
|
},
|
|
|
|
zoomReset() {
|
|
if (this.pdfViewer.isInPresentationMode) {
|
|
return;
|
|
}
|
|
this.pdfViewer.currentScaleValue = DEFAULT_SCALE_VALUE;
|
|
},
|
|
|
|
get pagesCount() {
|
|
return this.pdfDocument ? this.pdfDocument.numPages : 0;
|
|
},
|
|
|
|
get page() {
|
|
return this.pdfViewer.currentPageNumber;
|
|
},
|
|
|
|
set page(val) {
|
|
this.pdfViewer.currentPageNumber = val;
|
|
},
|
|
|
|
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 {
|
|
const doc = document.documentElement;
|
|
support = !!(
|
|
doc.requestFullscreen ||
|
|
doc.mozRequestFullScreen ||
|
|
doc.webkitRequestFullScreen
|
|
);
|
|
|
|
if (
|
|
document.fullscreenEnabled === false ||
|
|
document.mozFullScreenEnabled === false ||
|
|
document.webkitFullscreenEnabled === false
|
|
) {
|
|
support = false;
|
|
}
|
|
}
|
|
return shadow(this, "supportsFullscreen", support);
|
|
},
|
|
|
|
get supportsIntegratedFind() {
|
|
return this.externalServices.supportsIntegratedFind;
|
|
},
|
|
|
|
get supportsDocumentFonts() {
|
|
return this.externalServices.supportsDocumentFonts;
|
|
},
|
|
|
|
get loadingBar() {
|
|
const bar = new ProgressBar("#loadingBar");
|
|
return shadow(this, "loadingBar", bar);
|
|
},
|
|
|
|
get supportedMouseWheelZoomModifierKeys() {
|
|
return this.externalServices.supportedMouseWheelZoomModifierKeys;
|
|
},
|
|
|
|
initPassiveLoading() {
|
|
if (
|
|
typeof PDFJSDev === "undefined" ||
|
|
!PDFJSDev.test("MOZCENTRAL || CHROME")
|
|
) {
|
|
throw new Error("Not implemented: initPassiveLoading");
|
|
}
|
|
this.externalServices.initPassiveLoading({
|
|
onOpenWithTransport(url, length, transport) {
|
|
PDFViewerApplication.open(url, { length, range: transport });
|
|
},
|
|
onOpenWithData(data) {
|
|
PDFViewerApplication.open(data);
|
|
},
|
|
onOpenWithURL(url, length, originalUrl) {
|
|
let file = url,
|
|
args = null;
|
|
if (length !== undefined) {
|
|
args = { length };
|
|
}
|
|
if (originalUrl !== undefined) {
|
|
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.
|
|
*/
|
|
async close() {
|
|
const errorWrapper = this.appConfig.errorWrapper.container;
|
|
errorWrapper.setAttribute("hidden", "true");
|
|
|
|
if (!this.pdfLoadingTask) {
|
|
return undefined;
|
|
}
|
|
|
|
const 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);
|
|
this.pdfDocumentProperties.setDocument(null);
|
|
}
|
|
webViewerResetPermissions();
|
|
this.store = null;
|
|
this.isInitialViewSet = false;
|
|
this.downloadComplete = false;
|
|
this.url = "";
|
|
this.baseUrl = "";
|
|
this.contentDispositionFilename = null;
|
|
this.triggerDelayedFallback = null;
|
|
this._saveInProgress = false;
|
|
|
|
this.pdfSidebar.reset();
|
|
this.pdfOutlineViewer.reset();
|
|
this.pdfAttachmentViewer.reset();
|
|
this.pdfLayerViewer.reset();
|
|
|
|
if (this.pdfHistory) {
|
|
this.pdfHistory.reset();
|
|
}
|
|
if (this.findBar) {
|
|
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] - 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.
|
|
*/
|
|
async open(file, args) {
|
|
if (this.pdfLoadingTask) {
|
|
// We need to destroy already opened document.
|
|
await this.close();
|
|
}
|
|
// Set the necessary global worker parameters, using the available options.
|
|
const workerParameters = AppOptions.getAll(OptionKind.WORKER);
|
|
for (const key in workerParameters) {
|
|
GlobalWorkerOptions[key] = workerParameters[key];
|
|
}
|
|
|
|
const 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;
|
|
}
|
|
// Set the necessary API parameters, using the available options.
|
|
const apiParameters = AppOptions.getAll(OptionKind.API);
|
|
for (const key in apiParameters) {
|
|
let value = apiParameters[key];
|
|
|
|
if (key === "docBaseUrl" && !value) {
|
|
if (typeof PDFJSDev === "undefined" || !PDFJSDev.test("PRODUCTION")) {
|
|
value = document.URL.split("#")[0];
|
|
} else if (PDFJSDev.test("MOZCENTRAL || CHROME")) {
|
|
value = this.baseUrl;
|
|
}
|
|
}
|
|
parameters[key] = value;
|
|
}
|
|
|
|
if (args) {
|
|
for (const key in args) {
|
|
const value = args[key];
|
|
|
|
if (key === "length") {
|
|
this.pdfDocumentProperties.setFileSize(value);
|
|
}
|
|
parameters[key] = value;
|
|
}
|
|
}
|
|
|
|
const loadingTask = getDocument(parameters);
|
|
this.pdfLoadingTask = loadingTask;
|
|
|
|
loadingTask.onPassword = (updateCallback, reason) => {
|
|
this.pdfLinkService.externalLinkEnabled = false;
|
|
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 undefined; // Ignore errors for previously opened PDF files.
|
|
}
|
|
|
|
const 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 exception;
|
|
});
|
|
}
|
|
);
|
|
},
|
|
|
|
download({ sourceEventType = "download" } = {}) {
|
|
function downloadByUrl() {
|
|
downloadManager.downloadUrl(url, filename);
|
|
}
|
|
|
|
const url = this.baseUrl;
|
|
// Use this.url instead of this.baseUrl to perform filename detection based
|
|
// on the reference fragment as ultimate fallback if needed.
|
|
const filename =
|
|
this.contentDispositionFilename || getPDFFileNameFromURL(this.url);
|
|
const 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) {
|
|
const blob = new Blob([data], { type: "application/pdf" });
|
|
downloadManager.download(blob, url, filename, sourceEventType);
|
|
})
|
|
.catch(downloadByUrl); // Error occurred, try downloading with the URL.
|
|
},
|
|
|
|
save({ sourceEventType = "download" } = {}) {
|
|
if (this._saveInProgress) {
|
|
return;
|
|
}
|
|
|
|
const url = this.baseUrl;
|
|
// Use this.url instead of this.baseUrl to perform filename detection based
|
|
// on the reference fragment as ultimate fallback if needed.
|
|
const filename =
|
|
this.contentDispositionFilename || getPDFFileNameFromURL(this.url);
|
|
const 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 be saved: ${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) {
|
|
this.download({ sourceEventType });
|
|
return;
|
|
}
|
|
|
|
this._saveInProgress = true;
|
|
this.pdfDocument
|
|
.saveDocument(this.pdfDocument.annotationStorage)
|
|
.then(data => {
|
|
const blob = new Blob([data], { type: "application/pdf" });
|
|
downloadManager.download(blob, url, filename, sourceEventType);
|
|
})
|
|
.catch(() => {
|
|
this.download({ sourceEventType });
|
|
})
|
|
.finally(() => {
|
|
this._saveInProgress = false;
|
|
});
|
|
},
|
|
|
|
/**
|
|
* For PDF documents that contain e.g. forms and javaScript, we should only
|
|
* trigger the fallback bar once the user has interacted with the page.
|
|
* @private
|
|
*/
|
|
_delayedFallback(featureId) {
|
|
// Ensure that telemetry is always reported, since it's not guaranteed
|
|
// that the fallback bar will be shown (depends on user interaction).
|
|
this.externalServices.reportTelemetry({
|
|
type: "unsupportedFeature",
|
|
featureId,
|
|
});
|
|
|
|
if (!this.triggerDelayedFallback) {
|
|
this.triggerDelayedFallback = () => {
|
|
this.fallback(featureId);
|
|
this.triggerDelayedFallback = null;
|
|
};
|
|
}
|
|
},
|
|
|
|
fallback(featureId) {
|
|
this.externalServices.reportTelemetry({
|
|
type: "unsupportedFeature",
|
|
featureId,
|
|
});
|
|
|
|
// Only trigger the fallback once so we don't spam the user with messages
|
|
// for one PDF.
|
|
if (this.fellback) {
|
|
return;
|
|
}
|
|
this.fellback = true;
|
|
this.externalServices.fallback(
|
|
{
|
|
featureId,
|
|
url: this.baseUrl,
|
|
},
|
|
function response(download) {
|
|
if (!download) {
|
|
return;
|
|
}
|
|
PDFViewerApplication.download({ sourceEventType: "download" });
|
|
}
|
|
);
|
|
},
|
|
|
|
/**
|
|
* Show the error box.
|
|
* @param {string} message - A message that is human readable.
|
|
* @param {Object} [moreInfo] - Further information about the error that is
|
|
* more technical. Should have a 'message' and
|
|
* optionally a 'stack' property.
|
|
*/
|
|
error(message, moreInfo) {
|
|
const 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("MOZCENTRAL")) {
|
|
const errorWrapperConfig = this.appConfig.errorWrapper;
|
|
const errorWrapper = errorWrapperConfig.container;
|
|
errorWrapper.removeAttribute("hidden");
|
|
|
|
const errorMessage = errorWrapperConfig.errorMessage;
|
|
errorMessage.textContent = message;
|
|
|
|
const closeButton = errorWrapperConfig.closeButton;
|
|
closeButton.onclick = function () {
|
|
errorWrapper.setAttribute("hidden", "true");
|
|
};
|
|
|
|
const errorMoreInfo = errorWrapperConfig.errorMoreInfo;
|
|
const moreInfoButton = errorWrapperConfig.moreInfoButton;
|
|
const 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;
|
|
}
|
|
const 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.
|
|
const disableAutoFetch = this.pdfDocument
|
|
? this.pdfDocument.loadingParams.disableAutoFetch
|
|
: AppOptions.get("disableAutoFetch");
|
|
|
|
if (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("documentloaded", { source: this });
|
|
});
|
|
});
|
|
|
|
// Since the `setInitialView` call below depends on this being resolved,
|
|
// fetch it early to avoid delaying initial rendering of the PDF document.
|
|
const pageLayoutPromise = pdfDocument.getPageLayout().catch(function () {
|
|
/* Avoid breaking initial rendering; ignoring errors. */
|
|
});
|
|
const pageModePromise = pdfDocument.getPageMode().catch(function () {
|
|
/* Avoid breaking initial rendering; ignoring errors. */
|
|
});
|
|
const openActionPromise = pdfDocument.getOpenAction().catch(function () {
|
|
/* Avoid breaking initial rendering; ignoring errors. */
|
|
});
|
|
|
|
this.toolbar.setPagesCount(pdfDocument.numPages, false);
|
|
this.secondaryToolbar.setPagesCount(pdfDocument.numPages);
|
|
|
|
let baseDocumentUrl;
|
|
if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
|
|
baseDocumentUrl = null;
|
|
} else if (PDFJSDev.test("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);
|
|
|
|
const annotationStorage = pdfDocument.annotationStorage;
|
|
annotationStorage.onSetModified = function () {
|
|
window.addEventListener("beforeunload", beforeUnload);
|
|
};
|
|
annotationStorage.onResetModified = function () {
|
|
window.removeEventListener("beforeunload", beforeUnload);
|
|
};
|
|
|
|
const pdfViewer = this.pdfViewer;
|
|
pdfViewer.setDocument(pdfDocument);
|
|
const { firstPagePromise, onePageRendered, pagesPromise } = pdfViewer;
|
|
|
|
const pdfThumbnailViewer = this.pdfThumbnailViewer;
|
|
pdfThumbnailViewer.setDocument(pdfDocument);
|
|
|
|
const storedPromise = (this.store = new ViewHistory(
|
|
pdfDocument.fingerprint
|
|
))
|
|
.getMultiple({
|
|
page: null,
|
|
zoom: DEFAULT_SCALE_VALUE,
|
|
scrollLeft: "0",
|
|
scrollTop: "0",
|
|
rotation: null,
|
|
sidebarView: SidebarView.UNKNOWN,
|
|
scrollMode: ScrollMode.UNKNOWN,
|
|
spreadMode: SpreadMode.UNKNOWN,
|
|
})
|
|
.catch(() => {
|
|
/* Unable to read from storage; ignoring errors. */
|
|
return Object.create(null);
|
|
});
|
|
|
|
firstPagePromise.then(pdfPage => {
|
|
this.loadingBar.setWidth(this.appConfig.viewerContainer);
|
|
|
|
Promise.all([
|
|
animationStarted,
|
|
storedPromise,
|
|
pageLayoutPromise,
|
|
pageModePromise,
|
|
openActionPromise,
|
|
])
|
|
.then(async ([timeStamp, stored, pageLayout, pageMode, openAction]) => {
|
|
const viewOnLoad = AppOptions.get("viewOnLoad");
|
|
|
|
this._initializePdfHistory({
|
|
fingerprint: pdfDocument.fingerprint,
|
|
viewOnLoad,
|
|
initialDest: openAction && openAction.dest,
|
|
});
|
|
const initialBookmark = this.initialBookmark;
|
|
|
|
// Initialize the default values, from user preferences.
|
|
const zoom = AppOptions.get("defaultZoomValue");
|
|
let hash = zoom ? `zoom=${zoom}` : null;
|
|
|
|
let rotation = null;
|
|
let sidebarView = AppOptions.get("sidebarViewOnLoad");
|
|
let scrollMode = AppOptions.get("scrollModeOnLoad");
|
|
let spreadMode = AppOptions.get("spreadModeOnLoad");
|
|
|
|
if (stored.page && viewOnLoad !== ViewOnLoad.INITIAL) {
|
|
hash =
|
|
`page=${stored.page}&zoom=${zoom || stored.zoom},` +
|
|
`${stored.scrollLeft},${stored.scrollTop}`;
|
|
|
|
rotation = parseInt(stored.rotation, 10);
|
|
// Always let user preference take precedence over the view history.
|
|
if (sidebarView === SidebarView.UNKNOWN) {
|
|
sidebarView = stored.sidebarView | 0;
|
|
}
|
|
if (scrollMode === ScrollMode.UNKNOWN) {
|
|
scrollMode = stored.scrollMode | 0;
|
|
}
|
|
if (spreadMode === SpreadMode.UNKNOWN) {
|
|
spreadMode = stored.spreadMode | 0;
|
|
}
|
|
}
|
|
// Always let the user preference/view history take precedence.
|
|
if (pageMode && sidebarView === SidebarView.UNKNOWN) {
|
|
sidebarView = apiPageModeToSidebarView(pageMode);
|
|
}
|
|
if (pageLayout && spreadMode === SpreadMode.UNKNOWN) {
|
|
spreadMode = apiPageLayoutToSpreadMode(pageLayout);
|
|
}
|
|
|
|
this.setInitialView(hash, {
|
|
rotation,
|
|
sidebarView,
|
|
scrollMode,
|
|
spreadMode,
|
|
});
|
|
this.eventBus.dispatch("documentinit", { source: this });
|
|
// Make all navigation keys work on document load,
|
|
// unless the viewer is embedded in a web page.
|
|
if (!this.isViewerEmbedded) {
|
|
pdfViewer.focus();
|
|
}
|
|
|
|
// Currently only the "copy"-permission is supported, hence we delay
|
|
// the `getPermissions` API call until *after* rendering has started.
|
|
this._initializePermissions(pdfDocument);
|
|
|
|
// For documents with different page sizes, once all pages are
|
|
// resolved, ensure that the correct location becomes visible on load.
|
|
// (To reduce the risk, in very large and/or slow loading documents,
|
|
// that the location changes *after* the user has started interacting
|
|
// with the viewer, wait for either `pagesPromise` or a timeout.)
|
|
await Promise.race([
|
|
pagesPromise,
|
|
new Promise(resolve => {
|
|
setTimeout(resolve, FORCE_PAGES_LOADED_TIMEOUT);
|
|
}),
|
|
]);
|
|
if (!initialBookmark && !hash) {
|
|
return;
|
|
}
|
|
if (pdfViewer.hasEqualPageSizes) {
|
|
return;
|
|
}
|
|
this.initialBookmark = initialBookmark;
|
|
|
|
// eslint-disable-next-line no-self-assign
|
|
pdfViewer.currentScaleValue = pdfViewer.currentScaleValue;
|
|
// Re-apply the initial document location.
|
|
this.setInitialView(hash);
|
|
})
|
|
.catch(() => {
|
|
// Ensure that the document is always completely initialized,
|
|
// even if there are any errors thrown above.
|
|
this.setInitialView();
|
|
})
|
|
.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();
|
|
});
|
|
});
|
|
|
|
pagesPromise.then(() => {
|
|
this._initializeAutoPrint(pdfDocument, openActionPromise);
|
|
});
|
|
|
|
onePageRendered.then(() => {
|
|
pdfDocument.getOutline().then(outline => {
|
|
this.pdfOutlineViewer.render({ outline });
|
|
});
|
|
pdfDocument.getAttachments().then(attachments => {
|
|
this.pdfAttachmentViewer.render({ attachments });
|
|
});
|
|
// Ensure that the layers accurately reflects the current state in the
|
|
// viewer itself, rather than the default state provided by the API.
|
|
pdfViewer.optionalContentConfigPromise.then(optionalContentConfig => {
|
|
this.pdfLayerViewer.render({ optionalContentConfig, pdfDocument });
|
|
});
|
|
});
|
|
|
|
this._initializePageLabels(pdfDocument);
|
|
this._initializeMetadata(pdfDocument);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
async _initializeAutoPrint(pdfDocument, openActionPromise) {
|
|
const [openAction, javaScript] = await Promise.all([
|
|
openActionPromise,
|
|
pdfDocument.getJavaScript(),
|
|
]);
|
|
|
|
if (pdfDocument !== this.pdfDocument) {
|
|
return; // The document was closed while the auto print data resolved.
|
|
}
|
|
let triggerAutoPrint = false;
|
|
|
|
if (openAction && openAction.action === "Print") {
|
|
triggerAutoPrint = true;
|
|
}
|
|
if (javaScript) {
|
|
javaScript.some(js => {
|
|
if (!js) {
|
|
// Don't warn/fallback for empty JavaScript actions.
|
|
return false;
|
|
}
|
|
console.warn("Warning: JavaScript is not supported");
|
|
this._delayedFallback(UNSUPPORTED_FEATURES.javaScript);
|
|
return true;
|
|
});
|
|
|
|
if (!triggerAutoPrint) {
|
|
// Hack to support auto printing.
|
|
for (const js of javaScript) {
|
|
if (js && AutoPrintRegExp.test(js)) {
|
|
triggerAutoPrint = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!this.supportsPrinting) {
|
|
return;
|
|
}
|
|
if (triggerAutoPrint) {
|
|
setTimeout(function () {
|
|
window.print();
|
|
});
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
async _initializeMetadata(pdfDocument) {
|
|
const {
|
|
info,
|
|
metadata,
|
|
contentDispositionFilename,
|
|
} = await pdfDocument.getMetadata();
|
|
|
|
if (pdfDocument !== this.pdfDocument) {
|
|
return; // The document was closed while the metadata resolved.
|
|
}
|
|
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.pdfViewer.enableWebGL ? " [WebGL]" : ""})`
|
|
);
|
|
|
|
let pdfTitle;
|
|
const infoTitle = info && info.Title;
|
|
if (infoTitle) {
|
|
pdfTitle = infoTitle;
|
|
}
|
|
const metadataTitle = metadata && metadata.get("dc:title");
|
|
if (metadataTitle) {
|
|
// Ghostscript can produce invalid 'dc:title' Metadata entries:
|
|
// - The title may be "Untitled" (fixes bug 1031612).
|
|
// - The title may contain incorrectly encoded characters, which thus
|
|
// looks broken, hence we ignore the Metadata entry when it
|
|
// contains characters from the Specials Unicode block
|
|
// (fixes bug 1605526).
|
|
if (
|
|
metadataTitle !== "Untitled" &&
|
|
!/[\uFFF0-\uFFFF]/g.test(metadataTitle)
|
|
) {
|
|
pdfTitle = metadataTitle;
|
|
}
|
|
}
|
|
if (pdfTitle) {
|
|
this.setTitle(
|
|
`${pdfTitle} - ${contentDispositionFilename || document.title}`
|
|
);
|
|
} else if (contentDispositionFilename) {
|
|
this.setTitle(contentDispositionFilename);
|
|
}
|
|
|
|
if (info.IsXFAPresent && !info.IsAcroFormPresent) {
|
|
console.warn("Warning: XFA is not supported");
|
|
this._delayedFallback(UNSUPPORTED_FEATURES.forms);
|
|
} else if (
|
|
(info.IsAcroFormPresent || info.IsXFAPresent) &&
|
|
!this.pdfViewer.renderInteractiveForms
|
|
) {
|
|
console.warn("Warning: Interactive form support is not enabled");
|
|
this._delayedFallback(UNSUPPORTED_FEATURES.forms);
|
|
}
|
|
|
|
// Telemetry labels must be C++ variable friendly.
|
|
let versionId = "other";
|
|
if (KNOWN_VERSIONS.includes(info.PDFFormatVersion)) {
|
|
versionId = `v${info.PDFFormatVersion.replace(".", "_")}`;
|
|
}
|
|
let generatorId = "other";
|
|
if (info.Producer) {
|
|
const producer = info.Producer.toLowerCase();
|
|
KNOWN_GENERATORS.some(function (generator) {
|
|
if (!producer.includes(generator)) {
|
|
return false;
|
|
}
|
|
generatorId = generator.replace(/[ .\-]/g, "_");
|
|
return true;
|
|
});
|
|
}
|
|
let formType = null;
|
|
if (info.IsXFAPresent) {
|
|
formType = "xfa";
|
|
} else if (info.IsAcroFormPresent) {
|
|
formType = "acroform";
|
|
}
|
|
this.externalServices.reportTelemetry({
|
|
type: "documentInfo",
|
|
version: versionId,
|
|
generator: generatorId,
|
|
formType,
|
|
});
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
async _initializePageLabels(pdfDocument) {
|
|
const labels = await pdfDocument.getPageLabels();
|
|
|
|
if (pdfDocument !== this.pdfDocument) {
|
|
return; // The document was closed while the page labels resolved.
|
|
}
|
|
if (!labels || AppOptions.get("disablePageLabels")) {
|
|
return;
|
|
}
|
|
const 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;
|
|
}
|
|
let i = 0;
|
|
// Ignore page labels that correspond to standard page numbering.
|
|
while (i < numLabels && labels[i] === (i + 1).toString()) {
|
|
i++;
|
|
}
|
|
if (i === numLabels) {
|
|
return;
|
|
}
|
|
const { pdfViewer, pdfThumbnailViewer, toolbar } = this;
|
|
|
|
pdfViewer.setPageLabels(labels);
|
|
pdfThumbnailViewer.setPageLabels(labels);
|
|
|
|
// Changing toolbar page display to use labels and we need to set
|
|
// the label of the current page.
|
|
toolbar.setPagesCount(numLabels, true);
|
|
toolbar.setPageNumber(
|
|
pdfViewer.currentPageNumber,
|
|
pdfViewer.currentPageLabel
|
|
);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_initializePdfHistory({ fingerprint, viewOnLoad, initialDest = null }) {
|
|
if (this.isViewerEmbedded || AppOptions.get("disableHistory")) {
|
|
// The browsing history is only enabled when the viewer is standalone,
|
|
// i.e. not when it is embedded in a web page.
|
|
return;
|
|
}
|
|
this.pdfHistory.initialize({
|
|
fingerprint,
|
|
resetHistory: viewOnLoad === ViewOnLoad.INITIAL,
|
|
updateUrl: AppOptions.get("historyUpdateUrl"),
|
|
});
|
|
|
|
if (this.pdfHistory.initialBookmark) {
|
|
this.initialBookmark = this.pdfHistory.initialBookmark;
|
|
|
|
this.initialRotation = this.pdfHistory.initialRotation;
|
|
}
|
|
|
|
// Always let the browser history/document hash take precedence.
|
|
if (
|
|
initialDest &&
|
|
!this.initialBookmark &&
|
|
viewOnLoad === ViewOnLoad.UNKNOWN
|
|
) {
|
|
this.initialBookmark = JSON.stringify(initialDest);
|
|
// TODO: Re-factor the `PDFHistory` initialization to remove this hack
|
|
// that's currently necessary to prevent weird initial history state.
|
|
this.pdfHistory.push({ explicitDest: initialDest, pageNumber: null });
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
async _initializePermissions(pdfDocument) {
|
|
const permissions = await pdfDocument.getPermissions();
|
|
|
|
if (pdfDocument !== this.pdfDocument) {
|
|
return; // The document was closed while the permissions resolved.
|
|
}
|
|
if (!permissions || !AppOptions.get("enablePermissions")) {
|
|
return;
|
|
}
|
|
// Currently only the "copy"-permission is supported.
|
|
if (!permissions.includes(PermissionFlag.COPY)) {
|
|
this.appConfig.viewerContainer.classList.add(ENABLE_PERMISSIONS_CLASS);
|
|
}
|
|
},
|
|
|
|
setInitialView(
|
|
storedHash,
|
|
{ rotation, sidebarView, scrollMode, spreadMode } = {}
|
|
) {
|
|
const setRotation = angle => {
|
|
if (isValidRotation(angle)) {
|
|
this.pdfViewer.pagesRotation = angle;
|
|
}
|
|
};
|
|
const setViewerModes = (scroll, spread) => {
|
|
if (isValidScrollMode(scroll)) {
|
|
this.pdfViewer.scrollMode = scroll;
|
|
}
|
|
if (isValidSpreadMode(spread)) {
|
|
this.pdfViewer.spreadMode = spread;
|
|
}
|
|
};
|
|
this.isInitialViewSet = true;
|
|
this.pdfSidebar.setInitialView(sidebarView);
|
|
|
|
setViewerModes(scrollMode, spreadMode);
|
|
|
|
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;
|
|
}
|
|
|
|
const pagesOverview = this.pdfViewer.getPagesOverview();
|
|
const printContainer = this.appConfig.printContainer;
|
|
const printResolution = AppOptions.get("printResolution");
|
|
const optionalContentConfigPromise = this.pdfViewer
|
|
.optionalContentConfigPromise;
|
|
|
|
const printService = PDFPrintServiceFactory.instance.createPrintService(
|
|
this.pdfDocument,
|
|
pagesOverview,
|
|
printContainer,
|
|
printResolution,
|
|
optionalContentConfigPromise,
|
|
this.l10n
|
|
);
|
|
this.printService = printService;
|
|
this.forceRendering();
|
|
|
|
printService.layout();
|
|
|
|
this.externalServices.reportTelemetry({
|
|
type: "print",
|
|
});
|
|
},
|
|
|
|
afterPrint() {
|
|
if (this.printService) {
|
|
this.printService.destroy();
|
|
this.printService = null;
|
|
|
|
if (this.pdfDocument) {
|
|
this.pdfDocument.annotationStorage.resetModified();
|
|
}
|
|
}
|
|
this.forceRendering();
|
|
},
|
|
|
|
rotatePages(delta) {
|
|
if (!this.pdfDocument) {
|
|
return;
|
|
}
|
|
const 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() {
|
|
const { 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("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("print", webViewerPrint);
|
|
eventBus._on("download", webViewerDownload);
|
|
eventBus._on("save", webViewerSave);
|
|
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("zoomreset", webViewerZoomReset);
|
|
eventBus._on("pagenumberchanged", webViewerPageNumberChanged);
|
|
eventBus._on("scalechanged", webViewerScaleChanged);
|
|
eventBus._on("rotatecw", webViewerRotateCw);
|
|
eventBus._on("rotateccw", webViewerRotateCcw);
|
|
eventBus._on("optionalcontentconfig", webViewerOptionalContentConfig);
|
|
eventBus._on("switchscrollmode", webViewerSwitchScrollMode);
|
|
eventBus._on("scrollmodechanged", webViewerScrollModeChanged);
|
|
eventBus._on("switchspreadmode", webViewerSwitchSpreadMode);
|
|
eventBus._on("spreadmodechanged", webViewerSpreadModeChanged);
|
|
eventBus._on("documentproperties", webViewerDocumentProperties);
|
|
eventBus._on("find", webViewerFind);
|
|
eventBus._on("findfromurlhash", webViewerFindFromUrlHash);
|
|
eventBus._on("updatefindmatchescount", webViewerUpdateFindMatchesCount);
|
|
eventBus._on("updatefindcontrolstate", webViewerUpdateFindControlState);
|
|
|
|
if (AppOptions.get("pdfBug")) {
|
|
_boundEvents.reportPageStatsPDFBug = reportPageStatsPDFBug;
|
|
|
|
eventBus._on("pagerendered", _boundEvents.reportPageStatsPDFBug);
|
|
eventBus._on("pagechanging", _boundEvents.reportPageStatsPDFBug);
|
|
}
|
|
if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
|
|
eventBus._on("fileinputchange", webViewerFileInputChange);
|
|
eventBus._on("openfile", webViewerOpenFile);
|
|
}
|
|
},
|
|
|
|
bindWindowEvents() {
|
|
const { eventBus, _boundEvents } = this;
|
|
|
|
_boundEvents.windowResize = () => {
|
|
eventBus.dispatch("resize", { source: window });
|
|
};
|
|
_boundEvents.windowHashChange = () => {
|
|
eventBus.dispatch("hashchange", {
|
|
source: window,
|
|
hash: document.location.hash.substring(1),
|
|
});
|
|
};
|
|
_boundEvents.windowBeforePrint = () => {
|
|
eventBus.dispatch("beforeprint", { source: window });
|
|
};
|
|
_boundEvents.windowAfterPrint = () => {
|
|
eventBus.dispatch("afterprint", { source: window });
|
|
};
|
|
|
|
window.addEventListener("visibilitychange", webViewerVisibilityChange);
|
|
window.addEventListener("wheel", webViewerWheel, { passive: false });
|
|
window.addEventListener("touchstart", webViewerTouchStart, {
|
|
passive: false,
|
|
});
|
|
window.addEventListener("click", webViewerClick);
|
|
window.addEventListener("keydown", webViewerKeyDown);
|
|
window.addEventListener("keyup", webViewerKeyUp);
|
|
window.addEventListener("resize", _boundEvents.windowResize);
|
|
window.addEventListener("hashchange", _boundEvents.windowHashChange);
|
|
window.addEventListener("beforeprint", _boundEvents.windowBeforePrint);
|
|
window.addEventListener("afterprint", _boundEvents.windowAfterPrint);
|
|
},
|
|
|
|
unbindEvents() {
|
|
const { 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("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("print", webViewerPrint);
|
|
eventBus._off("download", webViewerDownload);
|
|
eventBus._off("save", webViewerSave);
|
|
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("zoomreset", webViewerZoomReset);
|
|
eventBus._off("pagenumberchanged", webViewerPageNumberChanged);
|
|
eventBus._off("scalechanged", webViewerScaleChanged);
|
|
eventBus._off("rotatecw", webViewerRotateCw);
|
|
eventBus._off("rotateccw", webViewerRotateCcw);
|
|
eventBus._off("optionalcontentconfig", webViewerOptionalContentConfig);
|
|
eventBus._off("switchscrollmode", webViewerSwitchScrollMode);
|
|
eventBus._off("scrollmodechanged", webViewerScrollModeChanged);
|
|
eventBus._off("switchspreadmode", webViewerSwitchSpreadMode);
|
|
eventBus._off("spreadmodechanged", webViewerSpreadModeChanged);
|
|
eventBus._off("documentproperties", webViewerDocumentProperties);
|
|
eventBus._off("find", webViewerFind);
|
|
eventBus._off("findfromurlhash", webViewerFindFromUrlHash);
|
|
eventBus._off("updatefindmatchescount", webViewerUpdateFindMatchesCount);
|
|
eventBus._off("updatefindcontrolstate", webViewerUpdateFindControlState);
|
|
|
|
if (_boundEvents.reportPageStatsPDFBug) {
|
|
eventBus._off("pagerendered", _boundEvents.reportPageStatsPDFBug);
|
|
eventBus._off("pagechanging", _boundEvents.reportPageStatsPDFBug);
|
|
|
|
_boundEvents.reportPageStatsPDFBug = null;
|
|
}
|
|
if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
|
|
eventBus._off("fileinputchange", webViewerFileInputChange);
|
|
eventBus._off("openfile", webViewerOpenFile);
|
|
}
|
|
|
|
_boundEvents.beforePrint = null;
|
|
_boundEvents.afterPrint = null;
|
|
},
|
|
|
|
unbindWindowEvents() {
|
|
const { _boundEvents } = this;
|
|
|
|
window.removeEventListener("visibilitychange", webViewerVisibilityChange);
|
|
window.removeEventListener("wheel", webViewerWheel, { passive: false });
|
|
window.removeEventListener("touchstart", webViewerTouchStart, {
|
|
passive: false,
|
|
});
|
|
window.removeEventListener("click", webViewerClick);
|
|
window.removeEventListener("keydown", webViewerKeyDown);
|
|
window.removeEventListener("keyup", webViewerKeyUp);
|
|
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;
|
|
},
|
|
|
|
accumulateWheelTicks(ticks) {
|
|
// If the scroll direction changed, reset the accumulated wheel ticks.
|
|
if (
|
|
(this._wheelUnusedTicks > 0 && ticks < 0) ||
|
|
(this._wheelUnusedTicks < 0 && ticks > 0)
|
|
) {
|
|
this._wheelUnusedTicks = 0;
|
|
}
|
|
this._wheelUnusedTicks += ticks;
|
|
const wholeTicks =
|
|
Math.sign(this._wheelUnusedTicks) *
|
|
Math.floor(Math.abs(this._wheelUnusedTicks));
|
|
this._wheelUnusedTicks -= wholeTicks;
|
|
return wholeTicks;
|
|
},
|
|
};
|
|
|
|
let validateFileURL;
|
|
if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
|
|
const HOSTED_VIEWER_ORIGINS = [
|
|
"null",
|
|
"http://mozilla.github.io",
|
|
"https://mozilla.github.io",
|
|
];
|
|
validateFileURL = function (file) {
|
|
if (file === undefined) {
|
|
return;
|
|
}
|
|
try {
|
|
const viewerOrigin = new URL(window.location.href).origin || "null";
|
|
if (HOSTED_VIEWER_ORIGINS.includes(viewerOrigin)) {
|
|
// Hosted or local viewer, allow for any file locations
|
|
return;
|
|
}
|
|
const { origin, protocol } = new URL(file, window.location.href);
|
|
// 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.
|
|
// IE10 / IE11 does not include an origin in `blob:`-URLs. So don't block
|
|
// any blob:-URL. The browser's same-origin policy will block requests to
|
|
// blob:-URLs from other origins, so this is safe.
|
|
if (origin !== viewerOrigin && protocol !== "blob:") {
|
|
throw new Error("file origin does not match viewer's");
|
|
}
|
|
} catch (ex) {
|
|
const 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;
|
|
}
|
|
};
|
|
}
|
|
|
|
async function loadFakeWorker() {
|
|
if (!GlobalWorkerOptions.workerSrc) {
|
|
GlobalWorkerOptions.workerSrc = AppOptions.get("workerSrc");
|
|
}
|
|
if (typeof PDFJSDev === "undefined" || !PDFJSDev.test("PRODUCTION")) {
|
|
if (typeof SystemJS !== "object") {
|
|
// Manually load SystemJS, since it's only necessary for fake workers.
|
|
await loadScript("../node_modules/systemjs/dist/system.js");
|
|
await loadScript("../systemjs.config.js");
|
|
}
|
|
window.pdfjsWorker = await SystemJS.import("pdfjs/core/worker.js");
|
|
return undefined;
|
|
}
|
|
return loadScript(PDFWorker.getWorkerSrc());
|
|
}
|
|
|
|
function loadAndEnablePDFBug(enabledTabs) {
|
|
const appConfig = PDFViewerApplication.appConfig;
|
|
return loadScript(appConfig.debuggerScriptPath).then(function () {
|
|
PDFBug.enable(enabledTabs);
|
|
PDFBug.init({ OPS }, appConfig.mainContainer);
|
|
});
|
|
}
|
|
|
|
function reportPageStatsPDFBug({ pageNumber }) {
|
|
if (typeof Stats === "undefined" || !Stats.enabled) {
|
|
return;
|
|
}
|
|
const pageView = PDFViewerApplication.pdfViewer.getPageView(
|
|
/* index = */ pageNumber - 1
|
|
);
|
|
const pageStats = pageView && pageView.pdfPage && pageView.pdfPage.stats;
|
|
if (!pageStats) {
|
|
return;
|
|
}
|
|
Stats.add(pageNumber, pageStats);
|
|
}
|
|
|
|
function webViewerInitialized() {
|
|
const appConfig = PDFViewerApplication.appConfig;
|
|
let file;
|
|
if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
|
|
const queryString = document.location.search.substring(1);
|
|
const params = parseQueryString(queryString);
|
|
file = "file" in params ? params.file : AppOptions.get("defaultUrl");
|
|
validateFileURL(file);
|
|
} else if (PDFJSDev.test("MOZCENTRAL")) {
|
|
file = window.location.href;
|
|
} else if (PDFJSDev.test("CHROME")) {
|
|
file = AppOptions.get("defaultUrl");
|
|
}
|
|
|
|
if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
|
|
const 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) {
|
|
const files = evt.target.files;
|
|
if (!files || files.length === 0) {
|
|
return;
|
|
}
|
|
PDFViewerApplication.eventBus.dispatch("fileinputchange", {
|
|
source: this,
|
|
fileInput: evt.target,
|
|
});
|
|
});
|
|
|
|
// Enable dragging-and-dropping a new PDF file onto the viewerContainer.
|
|
appConfig.mainContainer.addEventListener("dragover", function (evt) {
|
|
evt.preventDefault();
|
|
|
|
evt.dataTransfer.dropEffect = "move";
|
|
});
|
|
appConfig.mainContainer.addEventListener("drop", function (evt) {
|
|
evt.preventDefault();
|
|
|
|
const files = evt.dataTransfer.files;
|
|
if (!files || files.length === 0) {
|
|
return;
|
|
}
|
|
PDFViewerApplication.eventBus.dispatch("fileinputchange", {
|
|
source: this,
|
|
fileInput: evt.dataTransfer,
|
|
});
|
|
});
|
|
} else {
|
|
appConfig.toolbar.openFile.setAttribute("hidden", "true");
|
|
appConfig.secondaryToolbar.openFileButton.setAttribute("hidden", "true");
|
|
}
|
|
|
|
if (!PDFViewerApplication.supportsDocumentFonts) {
|
|
AppOptions.set("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
|
|
);
|
|
|
|
try {
|
|
webViewerOpenFileViaURL(file);
|
|
} catch (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 (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);
|
|
const xhr = new XMLHttpRequest();
|
|
xhr.onload = function () {
|
|
PDFViewerApplication.open(new Uint8Array(xhr.response));
|
|
};
|
|
xhr.open("GET", file);
|
|
xhr.responseType = "arraybuffer";
|
|
xhr.send();
|
|
return;
|
|
}
|
|
|
|
if (file) {
|
|
PDFViewerApplication.open(file);
|
|
}
|
|
};
|
|
} else if (PDFJSDev.test("MOZCENTRAL || CHROME")) {
|
|
webViewerOpenFileViaURL = function (file) {
|
|
PDFViewerApplication.setTitleUsingUrl(file);
|
|
PDFViewerApplication.initPassiveLoading();
|
|
};
|
|
} else {
|
|
webViewerOpenFileViaURL = function (file) {
|
|
if (file) {
|
|
throw new Error("Not implemented: webViewerOpenFileViaURL");
|
|
}
|
|
};
|
|
}
|
|
|
|
function webViewerResetPermissions() {
|
|
const { appConfig } = PDFViewerApplication;
|
|
if (!appConfig) {
|
|
return;
|
|
}
|
|
// Currently only the "copy"-permission is supported.
|
|
appConfig.viewerContainer.classList.remove(ENABLE_PERMISSIONS_CLASS);
|
|
}
|
|
|
|
function webViewerPageRendered({ pageNumber, timestamp, error }) {
|
|
const pageIndex = pageNumber - 1;
|
|
const 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) {
|
|
const thumbnailView = PDFViewerApplication.pdfThumbnailViewer.getThumbnail(
|
|
pageIndex
|
|
);
|
|
thumbnailView.setImage(pageView);
|
|
}
|
|
|
|
if (error) {
|
|
PDFViewerApplication.l10n
|
|
.get(
|
|
"rendering_error",
|
|
null,
|
|
"An error occurred while rendering the page."
|
|
)
|
|
.then(msg => {
|
|
PDFViewerApplication.error(msg, error);
|
|
});
|
|
}
|
|
|
|
PDFViewerApplication.externalServices.reportTelemetry({
|
|
type: "pageInfo",
|
|
timestamp,
|
|
});
|
|
// It is a good time to report stream and font types.
|
|
PDFViewerApplication.pdfDocument.getStats().then(function (stats) {
|
|
PDFViewerApplication.externalServices.reportTelemetry({
|
|
type: "documentStats",
|
|
stats,
|
|
});
|
|
});
|
|
}
|
|
|
|
function webViewerPageMode({ mode }) {
|
|
// Handle the 'pagemode' hash parameter, see also `PDFLinkService_setHash`.
|
|
let view;
|
|
switch (mode) {
|
|
case "thumbs":
|
|
view = SidebarView.THUMBS;
|
|
break;
|
|
case "bookmarks":
|
|
case "outline": // non-standard
|
|
view = SidebarView.OUTLINE;
|
|
break;
|
|
case "attachments": // non-standard
|
|
view = SidebarView.ATTACHMENTS;
|
|
break;
|
|
case "layers": // non-standard
|
|
view = SidebarView.LAYERS;
|
|
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 a couple of named actions that might be useful, see also
|
|
// `PDFLinkService.executeNamedAction`.
|
|
switch (evt.action) {
|
|
case "GoToPage":
|
|
PDFViewerApplication.appConfig.toolbar.pageNumber.select();
|
|
break;
|
|
|
|
case "Find":
|
|
if (!PDFViewerApplication.supportsIntegratedFind) {
|
|
PDFViewerApplication.findBar.toggle();
|
|
}
|
|
break;
|
|
|
|
case "Print":
|
|
if (PDFViewerApplication.supportsPrinting) {
|
|
webViewerPrint();
|
|
}
|
|
break;
|
|
|
|
case "SaveAs":
|
|
webViewerSave();
|
|
break;
|
|
}
|
|
}
|
|
|
|
function webViewerPresentationModeChanged({ active, switchInProgress }) {
|
|
let state = PresentationModeState.NORMAL;
|
|
if (switchInProgress) {
|
|
state = PresentationModeState.CHANGING;
|
|
} else if (active) {
|
|
state = PresentationModeState.FULLSCREEN;
|
|
}
|
|
PDFViewerApplication.pdfViewer.presentationModeState = state;
|
|
}
|
|
|
|
function webViewerSidebarViewChanged(evt) {
|
|
PDFViewerApplication.pdfRenderingQueue.isThumbnailViewEnabled =
|
|
PDFViewerApplication.pdfSidebar.isThumbnailViewVisible;
|
|
|
|
const 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) {
|
|
const location = evt.location,
|
|
store = PDFViewerApplication.store;
|
|
|
|
if (store && PDFViewerApplication.isInitialViewSet) {
|
|
store
|
|
.setMultiple({
|
|
page: location.pageNumber,
|
|
zoom: location.scale,
|
|
scrollLeft: location.left,
|
|
scrollTop: location.top,
|
|
rotation: location.rotation,
|
|
})
|
|
.catch(function () {
|
|
/* unable to write to storage */
|
|
});
|
|
}
|
|
const 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.
|
|
const currentPage = PDFViewerApplication.pdfViewer.getPageView(
|
|
PDFViewerApplication.page - 1
|
|
);
|
|
const loading = currentPage.renderingState !== RenderingStates.FINISHED;
|
|
PDFViewerApplication.toolbar.updateLoadingIndicatorState(loading);
|
|
}
|
|
|
|
function webViewerScrollModeChanged(evt) {
|
|
const store = PDFViewerApplication.store;
|
|
if (store && PDFViewerApplication.isInitialViewSet) {
|
|
// Only update the storage when the document has been loaded *and* rendered.
|
|
store.set("scrollMode", evt.mode).catch(function () {});
|
|
}
|
|
}
|
|
|
|
function webViewerSpreadModeChanged(evt) {
|
|
const store = PDFViewerApplication.store;
|
|
if (store && PDFViewerApplication.isInitialViewSet) {
|
|
// Only update the storage when the document has been loaded *and* rendered.
|
|
store.set("spreadMode", evt.mode).catch(function () {});
|
|
}
|
|
}
|
|
|
|
function webViewerResize() {
|
|
const { pdfDocument, pdfViewer } = PDFViewerApplication;
|
|
if (!pdfDocument) {
|
|
return;
|
|
}
|
|
const 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) {
|
|
const hash = evt.hash;
|
|
if (!hash) {
|
|
return;
|
|
}
|
|
if (!PDFViewerApplication.isInitialViewSet) {
|
|
PDFViewerApplication.initialBookmark = hash;
|
|
} else if (!PDFViewerApplication.pdfHistory.popStateInProgress) {
|
|
PDFViewerApplication.pdfLinkService.setHash(hash);
|
|
}
|
|
}
|
|
|
|
let webViewerFileInputChange, webViewerOpenFile;
|
|
if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
|
|
webViewerFileInputChange = function (evt) {
|
|
if (
|
|
PDFViewerApplication.pdfViewer &&
|
|
PDFViewerApplication.pdfViewer.isInPresentationMode
|
|
) {
|
|
return; // Opening a new PDF file isn't supported in Presentation Mode.
|
|
}
|
|
const file = evt.fileInput.files[0];
|
|
|
|
if (!viewerCompatibilityParams.disableCreateObjectURL) {
|
|
let url = URL.createObjectURL(file);
|
|
if (file.name) {
|
|
url = { url, originalUrl: file.name };
|
|
}
|
|
PDFViewerApplication.open(url);
|
|
} else {
|
|
PDFViewerApplication.setTitleUsingUrl(file.name);
|
|
// Read the local file into a Uint8Array.
|
|
const fileReader = new FileReader();
|
|
fileReader.onload = function webViewerChangeFileReaderOnload(event) {
|
|
const buffer = event.target.result;
|
|
PDFViewerApplication.open(new Uint8Array(buffer));
|
|
};
|
|
fileReader.readAsArrayBuffer(file);
|
|
}
|
|
|
|
// URL does not reflect proper document location - hiding some icons.
|
|
const 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");
|
|
};
|
|
|
|
webViewerOpenFile = function (evt) {
|
|
const openFileInputName = PDFViewerApplication.appConfig.openFileInputName;
|
|
document.getElementById(openFileInputName).click();
|
|
};
|
|
}
|
|
|
|
function webViewerPresentationMode() {
|
|
PDFViewerApplication.requestPresentationMode();
|
|
}
|
|
function webViewerPrint() {
|
|
window.print();
|
|
}
|
|
function webViewerDownloadOrSave(sourceEventType) {
|
|
if (
|
|
PDFViewerApplication.pdfDocument &&
|
|
PDFViewerApplication.pdfDocument.annotationStorage.size > 0
|
|
) {
|
|
PDFViewerApplication.save({ sourceEventType });
|
|
} else {
|
|
PDFViewerApplication.download({ sourceEventType });
|
|
}
|
|
}
|
|
function webViewerDownload() {
|
|
webViewerDownloadOrSave("download");
|
|
}
|
|
function webViewerSave() {
|
|
webViewerDownloadOrSave("save");
|
|
}
|
|
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 webViewerZoomReset() {
|
|
PDFViewerApplication.zoomReset();
|
|
}
|
|
function webViewerPageNumberChanged(evt) {
|
|
const pdfViewer = PDFViewerApplication.pdfViewer;
|
|
// Note that for `<input type="number">` HTML elements, an empty string will
|
|
// be returned for non-number inputs; hence we simply do nothing in that case.
|
|
if (evt.value !== "") {
|
|
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 webViewerOptionalContentConfig(evt) {
|
|
PDFViewerApplication.pdfViewer.optionalContentConfigPromise = evt.promise;
|
|
}
|
|
function webViewerSwitchScrollMode(evt) {
|
|
PDFViewerApplication.pdfViewer.scrollMode = evt.mode;
|
|
}
|
|
function webViewerSwitchSpreadMode(evt) {
|
|
PDFViewerApplication.pdfViewer.spreadMode = evt.mode;
|
|
}
|
|
function webViewerDocumentProperties() {
|
|
PDFViewerApplication.pdfDocumentProperties.open();
|
|
}
|
|
|
|
function webViewerFind(evt) {
|
|
PDFViewerApplication.findController.executeCommand("find" + evt.type, {
|
|
query: evt.query,
|
|
phraseSearch: evt.phraseSearch,
|
|
caseSensitive: evt.caseSensitive,
|
|
entireWord: evt.entireWord,
|
|
highlightAll: evt.highlightAll,
|
|
findPrevious: evt.findPrevious,
|
|
});
|
|
}
|
|
|
|
function webViewerFindFromUrlHash(evt) {
|
|
PDFViewerApplication.findController.executeCommand("find", {
|
|
query: evt.query,
|
|
phraseSearch: evt.phraseSearch,
|
|
caseSensitive: false,
|
|
entireWord: false,
|
|
highlightAll: true,
|
|
findPrevious: false,
|
|
});
|
|
}
|
|
|
|
function webViewerUpdateFindMatchesCount({ matchesCount }) {
|
|
if (PDFViewerApplication.supportsIntegratedFind) {
|
|
PDFViewerApplication.externalServices.updateFindMatchesCount(matchesCount);
|
|
} else {
|
|
PDFViewerApplication.findBar.updateResultsCount(matchesCount);
|
|
}
|
|
}
|
|
|
|
function webViewerUpdateFindControlState({
|
|
state,
|
|
previous,
|
|
matchesCount,
|
|
rawQuery,
|
|
}) {
|
|
if (PDFViewerApplication.supportsIntegratedFind) {
|
|
PDFViewerApplication.externalServices.updateFindControlState({
|
|
result: state,
|
|
findPrevious: previous,
|
|
matchesCount,
|
|
rawQuery,
|
|
});
|
|
} else {
|
|
PDFViewerApplication.findBar.updateUIState(state, previous, matchesCount);
|
|
}
|
|
}
|
|
|
|
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) {
|
|
const page = evt.pageNumber;
|
|
|
|
PDFViewerApplication.toolbar.setPageNumber(page, evt.pageLabel || null);
|
|
PDFViewerApplication.secondaryToolbar.setPageNumber(page);
|
|
|
|
if (PDFViewerApplication.pdfSidebar.isThumbnailViewVisible) {
|
|
PDFViewerApplication.pdfThumbnailViewer.scrollThumbnailIntoView(page);
|
|
}
|
|
}
|
|
|
|
function webViewerVisibilityChange(evt) {
|
|
if (document.visibilityState === "visible") {
|
|
// Ignore mouse wheel zooming during tab switches (bug 1503412).
|
|
setZoomDisabledTimeout();
|
|
}
|
|
}
|
|
|
|
let zoomDisabledTimeout = null;
|
|
function setZoomDisabledTimeout() {
|
|
if (zoomDisabledTimeout) {
|
|
clearTimeout(zoomDisabledTimeout);
|
|
}
|
|
zoomDisabledTimeout = setTimeout(function () {
|
|
zoomDisabledTimeout = null;
|
|
}, WHEEL_ZOOM_DISABLED_TIMEOUT);
|
|
}
|
|
|
|
function webViewerWheel(evt) {
|
|
const {
|
|
pdfViewer,
|
|
supportedMouseWheelZoomModifierKeys,
|
|
} = PDFViewerApplication;
|
|
|
|
if (pdfViewer.isInPresentationMode) {
|
|
return;
|
|
}
|
|
|
|
if (
|
|
(evt.ctrlKey && supportedMouseWheelZoomModifierKeys.ctrlKey) ||
|
|
(evt.metaKey && supportedMouseWheelZoomModifierKeys.metaKey)
|
|
) {
|
|
// Only zoom the pages, not the entire viewer.
|
|
evt.preventDefault();
|
|
// NOTE: this check must be placed *after* preventDefault.
|
|
if (zoomDisabledTimeout || document.visibilityState === "hidden") {
|
|
return;
|
|
}
|
|
|
|
const previousScale = pdfViewer.currentScale;
|
|
|
|
const delta = normalizeWheelEventDirection(evt);
|
|
let ticks = 0;
|
|
if (
|
|
evt.deltaMode === WheelEvent.DOM_DELTA_LINE ||
|
|
evt.deltaMode === WheelEvent.DOM_DELTA_PAGE
|
|
) {
|
|
// For line-based devices, use one tick per event, because different
|
|
// OSs have different defaults for the number lines. But we generally
|
|
// want one "clicky" roll of the wheel (which produces one event) to
|
|
// adjust the zoom by one step.
|
|
if (Math.abs(delta) >= 1) {
|
|
ticks = Math.sign(delta);
|
|
} else {
|
|
// If we're getting fractional lines (I can't think of a scenario
|
|
// this might actually happen), be safe and use the accumulator.
|
|
ticks = PDFViewerApplication.accumulateWheelTicks(delta);
|
|
}
|
|
} else {
|
|
// pixel-based devices
|
|
const PIXELS_PER_LINE_SCALE = 30;
|
|
ticks = PDFViewerApplication.accumulateWheelTicks(
|
|
delta / PIXELS_PER_LINE_SCALE
|
|
);
|
|
}
|
|
|
|
if (ticks < 0) {
|
|
PDFViewerApplication.zoomOut(-ticks);
|
|
} else if (ticks > 0) {
|
|
PDFViewerApplication.zoomIn(ticks);
|
|
}
|
|
|
|
const 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.
|
|
const scaleCorrectionFactor = currentScale / previousScale - 1;
|
|
const rect = pdfViewer.container.getBoundingClientRect();
|
|
const dx = evt.clientX - rect.left;
|
|
const dy = evt.clientY - rect.top;
|
|
pdfViewer.container.scrollLeft += dx * scaleCorrectionFactor;
|
|
pdfViewer.container.scrollTop += dy * scaleCorrectionFactor;
|
|
}
|
|
} else {
|
|
setZoomDisabledTimeout();
|
|
}
|
|
}
|
|
|
|
function webViewerTouchStart(evt) {
|
|
if (evt.touches.length > 1) {
|
|
// Disable touch-based zooming, because the entire UI bits gets zoomed and
|
|
// that doesn't look great. If we do want to have a good touch-based
|
|
// zooming experience, we need to implement smooth zoom capability (probably
|
|
// using a CSS transform for faster visual response, followed by async
|
|
// re-rendering at the final zoom level) and do gesture detection on the
|
|
// touchmove events to drive it. Or if we want to settle for a less good
|
|
// experience we can make the touchmove events drive the existing step-zoom
|
|
// behaviour that the ctrl+mousewheel path takes.
|
|
evt.preventDefault();
|
|
}
|
|
}
|
|
|
|
function webViewerClick(evt) {
|
|
// Avoid triggering the fallback bar when the user clicks on the
|
|
// toolbar or sidebar.
|
|
if (
|
|
PDFViewerApplication.triggerDelayedFallback &&
|
|
PDFViewerApplication.pdfViewer.containsElement(evt.target)
|
|
) {
|
|
PDFViewerApplication.triggerDelayedFallback();
|
|
}
|
|
|
|
if (!PDFViewerApplication.secondaryToolbar.isOpen) {
|
|
return;
|
|
}
|
|
const appConfig = PDFViewerApplication.appConfig;
|
|
if (
|
|
PDFViewerApplication.pdfViewer.containsElement(evt.target) ||
|
|
(appConfig.toolbar.container.contains(evt.target) &&
|
|
evt.target !== appConfig.secondaryToolbar.toggleButton)
|
|
) {
|
|
PDFViewerApplication.secondaryToolbar.close();
|
|
}
|
|
}
|
|
|
|
function webViewerKeyUp(evt) {
|
|
if (evt.keyCode === 9) {
|
|
// The user is tabbing into the viewer. Trigger the fallback bar if it has
|
|
// not already been displayed.
|
|
if (PDFViewerApplication.triggerDelayedFallback) {
|
|
PDFViewerApplication.triggerDelayedFallback();
|
|
}
|
|
}
|
|
}
|
|
|
|
function webViewerKeyDown(evt) {
|
|
if (PDFViewerApplication.overlayManager.active) {
|
|
return;
|
|
}
|
|
|
|
let handled = false,
|
|
ensureViewerFocused = false;
|
|
const cmd =
|
|
(evt.ctrlKey ? 1 : 0) |
|
|
(evt.altKey ? 2 : 0) |
|
|
(evt.shiftKey ? 4 : 0) |
|
|
(evt.metaKey ? 8 : 0);
|
|
|
|
const pdfViewer = PDFViewerApplication.pdfViewer;
|
|
const 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) {
|
|
const findState = PDFViewerApplication.findController.state;
|
|
if (findState) {
|
|
PDFViewerApplication.findController.executeCommand("findagain", {
|
|
query: findState.query,
|
|
phraseSearch: findState.phraseSearch,
|
|
caseSensitive: findState.caseSensitive,
|
|
entireWord: findState.entireWord,
|
|
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
|
|
PDFViewerApplication.zoomReset();
|
|
});
|
|
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("GENERIC || CHROME")) {
|
|
const { eventBus } = PDFViewerApplication;
|
|
|
|
// CTRL or META without shift
|
|
if (cmd === 1 || cmd === 8) {
|
|
switch (evt.keyCode) {
|
|
case 83: // s
|
|
eventBus.dispatch("download", { source: window });
|
|
handled = true;
|
|
break;
|
|
|
|
case 79: // o
|
|
if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
|
|
eventBus.dispatch("openfile", { source: window });
|
|
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.
|
|
const curElement = document.activeElement || document.querySelector(":focus");
|
|
const curElementTagName = curElement && curElement.tagName.toUpperCase();
|
|
if (
|
|
curElementTagName === "INPUT" ||
|
|
curElementTagName === "TEXTAREA" ||
|
|
curElementTagName === "SELECT" ||
|
|
(curElement && curElement.isContentEditable)
|
|
) {
|
|
// Make sure that the secondary toolbar is closed when Escape is pressed.
|
|
if (evt.keyCode !== /* Esc = */ 27) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
// No control key pressed at all.
|
|
if (cmd === 0) {
|
|
let turnPage = 0,
|
|
turnOnlyIfPageFit = false;
|
|
switch (evt.keyCode) {
|
|
case 38: // up arrow
|
|
case 33: // pg up
|
|
// vertical scrolling using arrow/pg keys
|
|
if (pdfViewer.isVerticalScrollbarEnabled) {
|
|
turnOnlyIfPageFit = true;
|
|
}
|
|
turnPage = -1;
|
|
break;
|
|
case 8: // backspace
|
|
if (!isViewerInPresentationMode) {
|
|
turnOnlyIfPageFit = true;
|
|
}
|
|
turnPage = -1;
|
|
break;
|
|
case 37: // left arrow
|
|
// horizontal scrolling using arrow keys
|
|
if (pdfViewer.isHorizontalScrollbarEnabled) {
|
|
turnOnlyIfPageFit = true;
|
|
}
|
|
/* falls through */
|
|
case 75: // 'k'
|
|
case 80: // 'p'
|
|
turnPage = -1;
|
|
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
|
|
// vertical scrolling using arrow/pg keys
|
|
if (pdfViewer.isVerticalScrollbarEnabled) {
|
|
turnOnlyIfPageFit = true;
|
|
}
|
|
turnPage = 1;
|
|
break;
|
|
case 13: // enter key
|
|
case 32: // spacebar
|
|
if (!isViewerInPresentationMode) {
|
|
turnOnlyIfPageFit = true;
|
|
}
|
|
turnPage = 1;
|
|
break;
|
|
case 39: // right arrow
|
|
// horizontal scrolling using arrow keys
|
|
if (pdfViewer.isHorizontalScrollbarEnabled) {
|
|
turnOnlyIfPageFit = true;
|
|
}
|
|
/* falls through */
|
|
case 74: // 'j'
|
|
case 78: // 'n'
|
|
turnPage = 1;
|
|
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;
|
|
|
|
case 115: // F4
|
|
PDFViewerApplication.pdfSidebar.toggle();
|
|
break;
|
|
}
|
|
|
|
if (
|
|
turnPage !== 0 &&
|
|
(!turnOnlyIfPageFit || pdfViewer.currentScaleValue === "page-fit")
|
|
) {
|
|
if (turnPage > 0) {
|
|
if (PDFViewerApplication.page < PDFViewerApplication.pagesCount) {
|
|
PDFViewerApplication.page++;
|
|
}
|
|
} else {
|
|
if (PDFViewerApplication.page > 1) {
|
|
PDFViewerApplication.page--;
|
|
}
|
|
}
|
|
handled = true;
|
|
}
|
|
}
|
|
|
|
// shift-key
|
|
if (cmd === 4) {
|
|
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();
|
|
}
|
|
}
|
|
|
|
function beforeUnload(evt) {
|
|
evt.preventDefault();
|
|
evt.returnValue = "";
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Converts API PageLayout values to the format used by `PDFViewer`.
|
|
* NOTE: This is supported to the extent that the viewer implements the
|
|
* necessary Scroll/Spread modes (since SinglePage, TwoPageLeft,
|
|
* and TwoPageRight all suggests using non-continuous scrolling).
|
|
* @param {string} mode - The API PageLayout value.
|
|
* @returns {number} A value from {SpreadMode}.
|
|
*/
|
|
function apiPageLayoutToSpreadMode(layout) {
|
|
switch (layout) {
|
|
case "SinglePage":
|
|
case "OneColumn":
|
|
return SpreadMode.NONE;
|
|
case "TwoColumnLeft":
|
|
case "TwoPageLeft":
|
|
return SpreadMode.ODD;
|
|
case "TwoColumnRight":
|
|
case "TwoPageRight":
|
|
return SpreadMode.EVEN;
|
|
}
|
|
return SpreadMode.NONE; // Default value.
|
|
}
|
|
|
|
/**
|
|
* 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":
|
|
return SidebarView.LAYERS;
|
|
}
|
|
return SidebarView.NONE; // Default value.
|
|
}
|
|
|
|
/* Abstract factory for the print service. */
|
|
const PDFPrintServiceFactory = {
|
|
instance: {
|
|
supportsPrinting: false,
|
|
createPrintService() {
|
|
throw new Error("Not implemented: createPrintService");
|
|
},
|
|
},
|
|
};
|
|
|
|
export {
|
|
PDFViewerApplication,
|
|
DefaultExternalServices,
|
|
PDFPrintServiceFactory,
|
|
};
|