3218 lines
99 KiB
JavaScript
3218 lines
99 KiB
JavaScript
/* Copyright 2012 Mozilla Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import {
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animationStarted,
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apiPageLayoutToViewerModes,
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apiPageModeToSidebarView,
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AutoPrintRegExp,
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CursorTool,
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DEFAULT_SCALE_VALUE,
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getActiveOrFocusedElement,
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isValidRotation,
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isValidScrollMode,
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isValidSpreadMode,
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normalizeWheelEventDirection,
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parseQueryString,
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ProgressBar,
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RenderingStates,
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ScrollMode,
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SidebarView,
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SpreadMode,
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TextLayerMode,
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} from "./ui_utils.js";
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import {
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AnnotationEditorType,
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build,
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FeatureTest,
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getDocument,
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getFilenameFromUrl,
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getPdfFilenameFromUrl,
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GlobalWorkerOptions,
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InvalidPDFException,
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isDataScheme,
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isPdfFile,
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MissingPDFException,
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PDFWorker,
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PromiseCapability,
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shadow,
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UnexpectedResponseException,
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version,
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} from "pdfjs-lib";
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import { AppOptions, OptionKind } from "./app_options.js";
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import { AutomationEventBus, EventBus } from "./event_utils.js";
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import { LinkTarget, PDFLinkService } from "./pdf_link_service.js";
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import { AltTextManager } from "web-alt_text_manager";
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import { AnnotationEditorParams } from "web-annotation_editor_params";
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import { OverlayManager } from "./overlay_manager.js";
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import { PasswordPrompt } from "./password_prompt.js";
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import { PDFAttachmentViewer } from "web-pdf_attachment_viewer";
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import { PDFCursorTools } from "web-pdf_cursor_tools";
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import { PDFDocumentProperties } from "web-pdf_document_properties";
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import { PDFFindBar } from "web-pdf_find_bar";
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import { PDFFindController } from "./pdf_find_controller.js";
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import { PDFHistory } from "./pdf_history.js";
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import { PDFLayerViewer } from "web-pdf_layer_viewer";
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import { PDFOutlineViewer } from "web-pdf_outline_viewer";
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import { PDFPresentationMode } from "web-pdf_presentation_mode";
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import { PDFRenderingQueue } from "./pdf_rendering_queue.js";
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import { PDFScriptingManager } from "./pdf_scripting_manager.js";
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import { PDFSidebar } from "web-pdf_sidebar";
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import { PDFThumbnailViewer } from "web-pdf_thumbnail_viewer";
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import { PDFViewer } from "./pdf_viewer.js";
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import { SecondaryToolbar } from "web-secondary_toolbar";
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import { Toolbar } from "web-toolbar";
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import { ViewHistory } from "./view_history.js";
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const FORCE_PAGES_LOADED_TIMEOUT = 10000; // ms
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const WHEEL_ZOOM_DISABLED_TIMEOUT = 1000; // ms
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const ViewOnLoad = {
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UNKNOWN: -1,
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PREVIOUS: 0, // Default value.
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INITIAL: 1,
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};
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class DefaultExternalServices {
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constructor() {
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throw new Error("Cannot initialize DefaultExternalServices.");
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}
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static updateFindControlState(data) {}
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static updateFindMatchesCount(data) {}
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static initPassiveLoading(callbacks) {}
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static reportTelemetry(data) {}
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static createDownloadManager() {
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throw new Error("Not implemented: createDownloadManager");
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}
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static createPreferences() {
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throw new Error("Not implemented: createPreferences");
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}
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static async createL10n() {
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throw new Error("Not implemented: createL10n");
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}
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static createScripting(options) {
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throw new Error("Not implemented: createScripting");
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}
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static updateEditorStates(data) {
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throw new Error("Not implemented: updateEditorStates");
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}
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static getNimbusExperimentData() {
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return shadow(this, "getNimbusExperimentData", Promise.resolve(null));
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}
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}
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const PDFViewerApplication = {
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initialBookmark: document.location.hash.substring(1),
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_initializedCapability: new PromiseCapability(),
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appConfig: null,
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pdfDocument: null,
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pdfLoadingTask: null,
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printService: null,
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/** @type {PDFViewer} */
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pdfViewer: null,
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/** @type {PDFThumbnailViewer} */
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pdfThumbnailViewer: null,
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/** @type {PDFRenderingQueue} */
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pdfRenderingQueue: null,
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/** @type {PDFPresentationMode} */
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pdfPresentationMode: null,
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/** @type {PDFDocumentProperties} */
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pdfDocumentProperties: null,
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/** @type {PDFLinkService} */
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pdfLinkService: null,
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/** @type {PDFHistory} */
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pdfHistory: null,
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/** @type {PDFSidebar} */
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pdfSidebar: null,
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/** @type {PDFOutlineViewer} */
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pdfOutlineViewer: null,
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/** @type {PDFAttachmentViewer} */
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pdfAttachmentViewer: null,
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/** @type {PDFLayerViewer} */
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pdfLayerViewer: null,
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/** @type {PDFCursorTools} */
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pdfCursorTools: null,
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/** @type {PDFScriptingManager} */
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pdfScriptingManager: null,
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/** @type {ViewHistory} */
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store: null,
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/** @type {DownloadManager} */
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downloadManager: null,
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/** @type {OverlayManager} */
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overlayManager: null,
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/** @type {Preferences} */
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preferences: null,
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/** @type {Toolbar} */
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toolbar: null,
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/** @type {SecondaryToolbar} */
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secondaryToolbar: null,
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/** @type {EventBus} */
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eventBus: null,
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/** @type {IL10n} */
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l10n: null,
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/** @type {AnnotationEditorParams} */
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annotationEditorParams: null,
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isInitialViewSet: false,
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downloadComplete: false,
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isViewerEmbedded: window.parent !== window,
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url: "",
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baseUrl: "",
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_downloadUrl: "",
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externalServices: DefaultExternalServices,
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_boundEvents: Object.create(null),
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documentInfo: null,
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metadata: null,
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_contentDispositionFilename: null,
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_contentLength: null,
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_saveInProgress: false,
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_wheelUnusedTicks: 0,
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_wheelUnusedFactor: 1,
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_touchUnusedTicks: 0,
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_touchUnusedFactor: 1,
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_PDFBug: null,
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_hasAnnotationEditors: false,
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_title: document.title,
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_printAnnotationStoragePromise: null,
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_touchInfo: null,
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_isCtrlKeyDown: false,
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_nimbusDataPromise: null,
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// Called once when the document is loaded.
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async initialize(appConfig) {
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let l10nPromise;
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// In the (various) extension builds, where the locale is set automatically,
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// initialize the `L10n`-instance as soon as possible.
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if (typeof PDFJSDev !== "undefined" && !PDFJSDev.test("GENERIC")) {
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l10nPromise = this.externalServices.createL10n();
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}
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this.appConfig = appConfig;
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if (
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typeof PDFJSDev === "undefined"
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? window.isGECKOVIEW
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: PDFJSDev.test("GECKOVIEW")
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) {
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this._nimbusDataPromise = this.externalServices.getNimbusExperimentData();
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}
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// Ensure that `Preferences`, and indirectly `AppOptions`, have initialized
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// before creating e.g. the various viewer components.
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try {
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await this.preferences.initializedPromise;
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} catch (ex) {
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console.error(`initialize: "${ex.message}".`);
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}
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if (AppOptions.get("pdfBugEnabled")) {
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await this._parseHashParams();
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}
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// Ensure that the `L10n`-instance has been initialized before creating
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// e.g. the various viewer components.
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if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
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l10nPromise = this.externalServices.createL10n();
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}
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this.l10n = await l10nPromise;
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document.getElementsByTagName("html")[0].dir = this.l10n.getDirection();
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// Connect Fluent, when necessary, and translate what we already have.
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if (typeof PDFJSDev === "undefined" || !PDFJSDev.test("MOZCENTRAL")) {
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this.l10n.translate(appConfig.appContainer || document.documentElement);
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}
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if (
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this.isViewerEmbedded &&
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AppOptions.get("externalLinkTarget") === LinkTarget.NONE
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) {
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// Prevent external links from "replacing" the viewer,
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// when it's embedded in e.g. an <iframe> or an <object>.
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AppOptions.set("externalLinkTarget", LinkTarget.TOP);
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}
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await this._initializeViewerComponents();
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// Bind the various event handlers *after* the viewer has been
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// initialized, to prevent errors if an event arrives too soon.
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this.bindEvents();
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this.bindWindowEvents();
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this._initializedCapability.resolve();
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},
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/**
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* Potentially parse special debugging flags in the hash section of the URL.
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* @private
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*/
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async _parseHashParams() {
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const hash = document.location.hash.substring(1);
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if (!hash) {
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return;
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}
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const { mainContainer, viewerContainer } = this.appConfig,
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params = parseQueryString(hash);
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if (params.get("disableworker") === "true") {
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try {
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await loadFakeWorker();
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} catch (ex) {
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console.error(`_parseHashParams: "${ex.message}".`);
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}
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}
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if (params.has("disablerange")) {
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AppOptions.set("disableRange", params.get("disablerange") === "true");
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}
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if (params.has("disablestream")) {
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AppOptions.set("disableStream", params.get("disablestream") === "true");
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}
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if (params.has("disableautofetch")) {
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AppOptions.set(
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"disableAutoFetch",
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params.get("disableautofetch") === "true"
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);
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}
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if (params.has("disablefontface")) {
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AppOptions.set(
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"disableFontFace",
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params.get("disablefontface") === "true"
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);
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}
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if (params.has("disablehistory")) {
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AppOptions.set("disableHistory", params.get("disablehistory") === "true");
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}
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if (params.has("verbosity")) {
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AppOptions.set("verbosity", params.get("verbosity") | 0);
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}
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if (params.has("textlayer")) {
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switch (params.get("textlayer")) {
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case "off":
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AppOptions.set("textLayerMode", TextLayerMode.DISABLE);
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break;
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case "visible":
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case "shadow":
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case "hover":
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viewerContainer.classList.add(`textLayer-${params.get("textlayer")}`);
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try {
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await loadPDFBug(this);
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this._PDFBug.loadCSS();
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} catch (ex) {
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console.error(`_parseHashParams: "${ex.message}".`);
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}
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break;
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}
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}
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if (params.has("pdfbug")) {
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AppOptions.set("pdfBug", true);
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AppOptions.set("fontExtraProperties", true);
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const enabled = params.get("pdfbug").split(",");
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try {
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await loadPDFBug(this);
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this._PDFBug.init(mainContainer, enabled);
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} catch (ex) {
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console.error(`_parseHashParams: "${ex.message}".`);
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}
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}
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// It is not possible to change locale for the (various) extension builds.
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if (
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(typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) &&
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params.has("locale")
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) {
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AppOptions.set("locale", params.get("locale"));
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}
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},
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/**
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* @private
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*/
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async _initializeViewerComponents() {
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const { appConfig, externalServices, l10n } = this;
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const eventBus = AppOptions.get("isInAutomation")
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? new AutomationEventBus()
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: new EventBus();
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this.eventBus = eventBus;
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this.overlayManager = new OverlayManager();
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const pdfRenderingQueue = new PDFRenderingQueue();
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pdfRenderingQueue.onIdle = this._cleanup.bind(this);
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this.pdfRenderingQueue = pdfRenderingQueue;
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const pdfLinkService = new PDFLinkService({
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eventBus,
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externalLinkTarget: AppOptions.get("externalLinkTarget"),
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externalLinkRel: AppOptions.get("externalLinkRel"),
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ignoreDestinationZoom: AppOptions.get("ignoreDestinationZoom"),
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});
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this.pdfLinkService = pdfLinkService;
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const downloadManager = externalServices.createDownloadManager();
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this.downloadManager = downloadManager;
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const findController = new PDFFindController({
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linkService: pdfLinkService,
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eventBus,
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updateMatchesCountOnProgress:
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typeof PDFJSDev === "undefined"
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? !window.isGECKOVIEW
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: !PDFJSDev.test("GECKOVIEW"),
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});
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this.findController = findController;
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const pdfScriptingManager = new PDFScriptingManager({
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eventBus,
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sandboxBundleSrc:
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typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC || CHROME")
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? AppOptions.get("sandboxBundleSrc")
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: null,
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externalServices,
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docProperties: this._scriptingDocProperties.bind(this),
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});
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this.pdfScriptingManager = pdfScriptingManager;
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const container = appConfig.mainContainer,
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viewer = appConfig.viewerContainer;
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const annotationEditorMode = AppOptions.get("annotationEditorMode");
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const isOffscreenCanvasSupported =
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AppOptions.get("isOffscreenCanvasSupported") &&
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FeatureTest.isOffscreenCanvasSupported;
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const pageColors =
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AppOptions.get("forcePageColors") ||
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window.matchMedia("(forced-colors: active)").matches
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? {
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background: AppOptions.get("pageColorsBackground"),
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foreground: AppOptions.get("pageColorsForeground"),
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}
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: null;
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const altTextManager = appConfig.altTextDialog
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? new AltTextManager(
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appConfig.altTextDialog,
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container,
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this.overlayManager,
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eventBus
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)
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: null;
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const pdfViewer = new PDFViewer({
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container,
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viewer,
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eventBus,
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renderingQueue: pdfRenderingQueue,
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linkService: pdfLinkService,
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downloadManager,
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altTextManager,
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findController,
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scriptingManager:
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AppOptions.get("enableScripting") && pdfScriptingManager,
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l10n,
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textLayerMode: AppOptions.get("textLayerMode"),
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annotationMode: AppOptions.get("annotationMode"),
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annotationEditorMode,
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imageResourcesPath: AppOptions.get("imageResourcesPath"),
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enablePrintAutoRotate: AppOptions.get("enablePrintAutoRotate"),
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isOffscreenCanvasSupported,
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maxCanvasPixels: AppOptions.get("maxCanvasPixels"),
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enablePermissions: AppOptions.get("enablePermissions"),
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pageColors,
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});
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this.pdfViewer = pdfViewer;
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pdfRenderingQueue.setViewer(pdfViewer);
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pdfLinkService.setViewer(pdfViewer);
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pdfScriptingManager.setViewer(pdfViewer);
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if (appConfig.sidebar?.thumbnailView) {
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this.pdfThumbnailViewer = new PDFThumbnailViewer({
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container: appConfig.sidebar.thumbnailView,
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eventBus,
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renderingQueue: pdfRenderingQueue,
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linkService: pdfLinkService,
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pageColors,
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});
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pdfRenderingQueue.setThumbnailViewer(this.pdfThumbnailViewer);
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}
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// The browsing history is only enabled when the viewer is standalone,
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// i.e. not when it is embedded in a web page.
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if (!this.isViewerEmbedded && !AppOptions.get("disableHistory")) {
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this.pdfHistory = new PDFHistory({
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linkService: pdfLinkService,
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eventBus,
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});
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pdfLinkService.setHistory(this.pdfHistory);
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}
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|
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if (!this.supportsIntegratedFind && appConfig.findBar) {
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this.findBar = new PDFFindBar(appConfig.findBar, eventBus);
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}
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|
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if (appConfig.annotationEditorParams) {
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if (annotationEditorMode !== AnnotationEditorType.DISABLE) {
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if (!isOffscreenCanvasSupported) {
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appConfig.toolbar?.editorStampButton?.classList.add("hidden");
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}
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this.annotationEditorParams = new AnnotationEditorParams(
|
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appConfig.annotationEditorParams,
|
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eventBus
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);
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} else {
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for (const id of ["editorModeButtons", "editorModeSeparator"]) {
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document.getElementById(id)?.classList.add("hidden");
|
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}
|
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}
|
|
}
|
|
|
|
if (appConfig.documentProperties) {
|
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this.pdfDocumentProperties = new PDFDocumentProperties(
|
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appConfig.documentProperties,
|
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this.overlayManager,
|
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eventBus,
|
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l10n,
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/* fileNameLookup = */ () => this._docFilename
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);
|
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}
|
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|
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// NOTE: The cursor-tools are unlikely to be helpful/useful in GeckoView,
|
|
// in particular the `HandTool` which basically simulates touch scrolling.
|
|
if (appConfig.secondaryToolbar?.cursorHandToolButton) {
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this.pdfCursorTools = new PDFCursorTools({
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container,
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eventBus,
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cursorToolOnLoad: AppOptions.get("cursorToolOnLoad"),
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});
|
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}
|
|
|
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if (appConfig.toolbar) {
|
|
if (
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typeof PDFJSDev === "undefined"
|
|
? window.isGECKOVIEW
|
|
: PDFJSDev.test("GECKOVIEW")
|
|
) {
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|
this.toolbar = new Toolbar(
|
|
appConfig.toolbar,
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eventBus,
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await this._nimbusDataPromise
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);
|
|
} else {
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this.toolbar = new Toolbar(appConfig.toolbar, eventBus);
|
|
}
|
|
}
|
|
|
|
if (appConfig.secondaryToolbar) {
|
|
this.secondaryToolbar = new SecondaryToolbar(
|
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appConfig.secondaryToolbar,
|
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eventBus
|
|
);
|
|
}
|
|
|
|
if (
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this.supportsFullscreen &&
|
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appConfig.secondaryToolbar?.presentationModeButton
|
|
) {
|
|
this.pdfPresentationMode = new PDFPresentationMode({
|
|
container,
|
|
pdfViewer,
|
|
eventBus,
|
|
});
|
|
}
|
|
|
|
if (appConfig.passwordOverlay) {
|
|
this.passwordPrompt = new PasswordPrompt(
|
|
appConfig.passwordOverlay,
|
|
this.overlayManager,
|
|
this.isViewerEmbedded
|
|
);
|
|
}
|
|
|
|
if (appConfig.sidebar?.outlineView) {
|
|
this.pdfOutlineViewer = new PDFOutlineViewer({
|
|
container: appConfig.sidebar.outlineView,
|
|
eventBus,
|
|
l10n,
|
|
linkService: pdfLinkService,
|
|
downloadManager,
|
|
});
|
|
}
|
|
|
|
if (appConfig.sidebar?.attachmentsView) {
|
|
this.pdfAttachmentViewer = new PDFAttachmentViewer({
|
|
container: appConfig.sidebar.attachmentsView,
|
|
eventBus,
|
|
l10n,
|
|
downloadManager,
|
|
});
|
|
}
|
|
|
|
if (appConfig.sidebar?.layersView) {
|
|
this.pdfLayerViewer = new PDFLayerViewer({
|
|
container: appConfig.sidebar.layersView,
|
|
eventBus,
|
|
l10n,
|
|
});
|
|
}
|
|
|
|
if (appConfig.sidebar) {
|
|
this.pdfSidebar = new PDFSidebar({
|
|
elements: appConfig.sidebar,
|
|
eventBus,
|
|
l10n,
|
|
});
|
|
this.pdfSidebar.onToggled = this.forceRendering.bind(this);
|
|
this.pdfSidebar.onUpdateThumbnails = () => {
|
|
// Use the rendered pages to set the corresponding thumbnail images.
|
|
for (const pageView of pdfViewer.getCachedPageViews()) {
|
|
if (pageView.renderingState === RenderingStates.FINISHED) {
|
|
this.pdfThumbnailViewer
|
|
.getThumbnail(pageView.id - 1)
|
|
?.setImage(pageView);
|
|
}
|
|
}
|
|
this.pdfThumbnailViewer.scrollThumbnailIntoView(
|
|
pdfViewer.currentPageNumber
|
|
);
|
|
};
|
|
}
|
|
},
|
|
|
|
async run(config) {
|
|
this.preferences = this.externalServices.createPreferences();
|
|
await this.initialize(config);
|
|
|
|
const { appConfig, eventBus } = this;
|
|
let file;
|
|
if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
|
|
const queryString = document.location.search.substring(1);
|
|
const params = parseQueryString(queryString);
|
|
file = params.get("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 = appConfig.openFileInput;
|
|
fileInput.value = null;
|
|
|
|
fileInput.addEventListener("change", function (evt) {
|
|
const { files } = evt.target;
|
|
if (!files || files.length === 0) {
|
|
return;
|
|
}
|
|
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 =
|
|
evt.dataTransfer.effectAllowed === "copy" ? "copy" : "move";
|
|
});
|
|
appConfig.mainContainer.addEventListener("drop", function (evt) {
|
|
evt.preventDefault();
|
|
|
|
const { files } = evt.dataTransfer;
|
|
if (!files || files.length === 0) {
|
|
return;
|
|
}
|
|
eventBus.dispatch("fileinputchange", {
|
|
source: this,
|
|
fileInput: evt.dataTransfer,
|
|
});
|
|
});
|
|
}
|
|
|
|
if (!AppOptions.get("supportsDocumentFonts")) {
|
|
AppOptions.set("disableFontFace", true);
|
|
this.l10n.get("pdfjs-web-fonts-disabled").then(msg => {
|
|
console.warn(msg);
|
|
});
|
|
}
|
|
|
|
if (!this.supportsPrinting) {
|
|
appConfig.toolbar?.print?.classList.add("hidden");
|
|
appConfig.secondaryToolbar?.printButton.classList.add("hidden");
|
|
}
|
|
|
|
if (!this.supportsFullscreen) {
|
|
appConfig.secondaryToolbar?.presentationModeButton.classList.add(
|
|
"hidden"
|
|
);
|
|
}
|
|
|
|
if (this.supportsIntegratedFind) {
|
|
appConfig.toolbar?.viewFind?.classList.add("hidden");
|
|
}
|
|
|
|
appConfig.mainContainer.addEventListener(
|
|
"transitionend",
|
|
function (evt) {
|
|
if (evt.target === /* mainContainer */ this) {
|
|
eventBus.dispatch("resize", { source: this });
|
|
}
|
|
},
|
|
true
|
|
);
|
|
|
|
if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
|
|
if (file) {
|
|
this.open({ url: file });
|
|
} else {
|
|
this._hideViewBookmark();
|
|
}
|
|
} else if (PDFJSDev.test("MOZCENTRAL || CHROME")) {
|
|
this.initPassiveLoading(file);
|
|
} else {
|
|
throw new Error("Not implemented: run");
|
|
}
|
|
},
|
|
|
|
get initialized() {
|
|
return this._initializedCapability.settled;
|
|
},
|
|
|
|
get initializedPromise() {
|
|
return this._initializedCapability.promise;
|
|
},
|
|
|
|
zoomIn(steps, scaleFactor) {
|
|
if (this.pdfViewer.isInPresentationMode) {
|
|
return;
|
|
}
|
|
this.pdfViewer.increaseScale({
|
|
drawingDelay: AppOptions.get("defaultZoomDelay"),
|
|
steps,
|
|
scaleFactor,
|
|
});
|
|
},
|
|
|
|
zoomOut(steps, scaleFactor) {
|
|
if (this.pdfViewer.isInPresentationMode) {
|
|
return;
|
|
}
|
|
this.pdfViewer.decreaseScale({
|
|
drawingDelay: AppOptions.get("defaultZoomDelay"),
|
|
steps,
|
|
scaleFactor,
|
|
});
|
|
},
|
|
|
|
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 supportsPrinting() {
|
|
return PDFPrintServiceFactory.instance.supportsPrinting;
|
|
},
|
|
|
|
get supportsFullscreen() {
|
|
return shadow(this, "supportsFullscreen", document.fullscreenEnabled);
|
|
},
|
|
|
|
get supportsPinchToZoom() {
|
|
return shadow(
|
|
this,
|
|
"supportsPinchToZoom",
|
|
AppOptions.get("supportsPinchToZoom")
|
|
);
|
|
},
|
|
|
|
get supportsIntegratedFind() {
|
|
return shadow(
|
|
this,
|
|
"supportsIntegratedFind",
|
|
AppOptions.get("supportsIntegratedFind")
|
|
);
|
|
},
|
|
|
|
get loadingBar() {
|
|
const barElement = document.getElementById("loadingBar");
|
|
const bar = barElement ? new ProgressBar(barElement) : null;
|
|
return shadow(this, "loadingBar", bar);
|
|
},
|
|
|
|
get supportsMouseWheelZoomCtrlKey() {
|
|
return shadow(
|
|
this,
|
|
"supportsMouseWheelZoomCtrlKey",
|
|
AppOptions.get("supportsMouseWheelZoomCtrlKey")
|
|
);
|
|
},
|
|
|
|
get supportsMouseWheelZoomMetaKey() {
|
|
return shadow(
|
|
this,
|
|
"supportsMouseWheelZoomMetaKey",
|
|
AppOptions.get("supportsMouseWheelZoomMetaKey")
|
|
);
|
|
},
|
|
|
|
initPassiveLoading(file) {
|
|
if (
|
|
typeof PDFJSDev === "undefined" ||
|
|
!PDFJSDev.test("MOZCENTRAL || CHROME")
|
|
) {
|
|
throw new Error("Not implemented: initPassiveLoading");
|
|
}
|
|
this.setTitleUsingUrl(file, /* downloadUrl = */ file);
|
|
|
|
this.externalServices.initPassiveLoading({
|
|
onOpenWithTransport: range => {
|
|
this.open({ range });
|
|
},
|
|
onOpenWithData: (data, contentDispositionFilename) => {
|
|
if (isPdfFile(contentDispositionFilename)) {
|
|
this._contentDispositionFilename = contentDispositionFilename;
|
|
}
|
|
this.open({ data });
|
|
},
|
|
onOpenWithURL: (url, length, originalUrl) => {
|
|
this.open({ url, length, originalUrl });
|
|
},
|
|
onError: err => {
|
|
this.l10n.get("pdfjs-loading-error").then(msg => {
|
|
this._documentError(msg, err);
|
|
});
|
|
},
|
|
onProgress: (loaded, total) => {
|
|
this.progress(loaded / total);
|
|
},
|
|
});
|
|
},
|
|
|
|
setTitleUsingUrl(url = "", downloadUrl = null) {
|
|
this.url = url;
|
|
this.baseUrl = url.split("#", 1)[0];
|
|
if (downloadUrl) {
|
|
this._downloadUrl =
|
|
downloadUrl === url ? this.baseUrl : downloadUrl.split("#", 1)[0];
|
|
}
|
|
if (isDataScheme(url)) {
|
|
this._hideViewBookmark();
|
|
}
|
|
let title = getPdfFilenameFromUrl(url, "");
|
|
if (!title) {
|
|
try {
|
|
title = decodeURIComponent(getFilenameFromUrl(url)) || url;
|
|
} catch {
|
|
// decodeURIComponent may throw URIError,
|
|
// fall back to using the unprocessed url in that case
|
|
title = url;
|
|
}
|
|
}
|
|
this.setTitle(title);
|
|
},
|
|
|
|
setTitle(title = this._title) {
|
|
this._title = title;
|
|
|
|
if (this.isViewerEmbedded) {
|
|
// Embedded PDF viewers should not be changing their parent page's title.
|
|
return;
|
|
}
|
|
const editorIndicator =
|
|
this._hasAnnotationEditors && !this.pdfRenderingQueue.printing;
|
|
document.title = `${editorIndicator ? "* " : ""}${title}`;
|
|
},
|
|
|
|
get _docFilename() {
|
|
// Use `this.url` instead of `this.baseUrl` to perform filename detection
|
|
// based on the reference fragment as ultimate fallback if needed.
|
|
return this._contentDispositionFilename || getPdfFilenameFromUrl(this.url);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_hideViewBookmark() {
|
|
const { secondaryToolbar } = this.appConfig;
|
|
// URL does not reflect proper document location - hiding some buttons.
|
|
secondaryToolbar?.viewBookmarkButton.classList.add("hidden");
|
|
|
|
// Avoid displaying multiple consecutive separators in the secondaryToolbar.
|
|
if (secondaryToolbar?.presentationModeButton.classList.contains("hidden")) {
|
|
document.getElementById("viewBookmarkSeparator")?.classList.add("hidden");
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Closes opened PDF document.
|
|
* @returns {Promise} - Returns the promise, which is resolved when all
|
|
* destruction is completed.
|
|
*/
|
|
async close() {
|
|
this._unblockDocumentLoadEvent();
|
|
this._hideViewBookmark();
|
|
|
|
if (!this.pdfLoadingTask) {
|
|
return;
|
|
}
|
|
if (
|
|
(typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) &&
|
|
this.pdfDocument?.annotationStorage.size > 0 &&
|
|
this._annotationStorageModified
|
|
) {
|
|
try {
|
|
// Trigger saving, to prevent data loss in forms; see issue 12257.
|
|
await this.save();
|
|
} catch {
|
|
// Ignoring errors, to ensure that document closing won't break.
|
|
}
|
|
}
|
|
const promises = [];
|
|
|
|
promises.push(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);
|
|
}
|
|
this.pdfLinkService.externalLinkEnabled = true;
|
|
this.store = null;
|
|
this.isInitialViewSet = false;
|
|
this.downloadComplete = false;
|
|
this.url = "";
|
|
this.baseUrl = "";
|
|
this._downloadUrl = "";
|
|
this.documentInfo = null;
|
|
this.metadata = null;
|
|
this._contentDispositionFilename = null;
|
|
this._contentLength = null;
|
|
this._saveInProgress = false;
|
|
this._hasAnnotationEditors = false;
|
|
|
|
promises.push(
|
|
this.pdfScriptingManager.destroyPromise,
|
|
this.passwordPrompt.close()
|
|
);
|
|
|
|
this.setTitle();
|
|
this.pdfSidebar?.reset();
|
|
this.pdfOutlineViewer?.reset();
|
|
this.pdfAttachmentViewer?.reset();
|
|
this.pdfLayerViewer?.reset();
|
|
|
|
this.pdfHistory?.reset();
|
|
this.findBar?.reset();
|
|
this.toolbar?.reset();
|
|
this.secondaryToolbar?.reset();
|
|
this._PDFBug?.cleanup();
|
|
|
|
await Promise.all(promises);
|
|
},
|
|
|
|
/**
|
|
* Opens a new PDF document.
|
|
* @param {Object} args - Accepts any/all of the properties from
|
|
* {@link DocumentInitParameters}, and also a `originalUrl` string.
|
|
* @returns {Promise} - Promise that is resolved when the document is opened.
|
|
*/
|
|
async open(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 workerParams = AppOptions.getAll(OptionKind.WORKER);
|
|
Object.assign(GlobalWorkerOptions, workerParams);
|
|
|
|
if (
|
|
(typeof PDFJSDev === "undefined" || !PDFJSDev.test("MOZCENTRAL")) &&
|
|
args.url
|
|
) {
|
|
// The Firefox built-in viewer always calls `setTitleUsingUrl`, before
|
|
// `initPassiveLoading`, and it never provides an `originalUrl` here.
|
|
this.setTitleUsingUrl(
|
|
args.originalUrl || args.url,
|
|
/* downloadUrl = */ args.url
|
|
);
|
|
}
|
|
// Always set `docBaseUrl` in development mode, and in the (various)
|
|
// extension builds.
|
|
if (typeof PDFJSDev === "undefined") {
|
|
AppOptions.set("docBaseUrl", document.URL.split("#", 1)[0]);
|
|
} else if (PDFJSDev.test("MOZCENTRAL || CHROME")) {
|
|
AppOptions.set("docBaseUrl", this.baseUrl);
|
|
}
|
|
|
|
// Set the necessary API parameters, using all the available options.
|
|
const apiParams = AppOptions.getAll(OptionKind.API);
|
|
const loadingTask = getDocument({
|
|
...apiParams,
|
|
...args,
|
|
});
|
|
this.pdfLoadingTask = loadingTask;
|
|
|
|
loadingTask.onPassword = (updateCallback, reason) => {
|
|
if (this.isViewerEmbedded) {
|
|
// The load event can't be triggered until the password is entered, so
|
|
// if the viewer is in an iframe and its visibility depends on the
|
|
// onload callback then the viewer never shows (bug 1801341).
|
|
this._unblockDocumentLoadEvent();
|
|
}
|
|
|
|
this.pdfLinkService.externalLinkEnabled = false;
|
|
this.passwordPrompt.setUpdateCallback(updateCallback, reason);
|
|
this.passwordPrompt.open();
|
|
};
|
|
|
|
loadingTask.onProgress = ({ loaded, total }) => {
|
|
this.progress(loaded / total);
|
|
};
|
|
|
|
return loadingTask.promise.then(
|
|
pdfDocument => {
|
|
this.load(pdfDocument);
|
|
},
|
|
reason => {
|
|
if (loadingTask !== this.pdfLoadingTask) {
|
|
return undefined; // Ignore errors for previously opened PDF files.
|
|
}
|
|
|
|
let key = "pdfjs-loading-error";
|
|
if (reason instanceof InvalidPDFException) {
|
|
key = "pdfjs-invalid-file-error";
|
|
} else if (reason instanceof MissingPDFException) {
|
|
key = "pdfjs-missing-file-error";
|
|
} else if (reason instanceof UnexpectedResponseException) {
|
|
key = "pdfjs-unexpected-response-error";
|
|
}
|
|
return this.l10n.get(key).then(msg => {
|
|
this._documentError(msg, { message: reason?.message });
|
|
throw reason;
|
|
});
|
|
}
|
|
);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_ensureDownloadComplete() {
|
|
if (this.pdfDocument && this.downloadComplete) {
|
|
return;
|
|
}
|
|
throw new Error("PDF document not downloaded.");
|
|
},
|
|
|
|
async download(options = {}) {
|
|
const url = this._downloadUrl,
|
|
filename = this._docFilename;
|
|
try {
|
|
this._ensureDownloadComplete();
|
|
|
|
const data = await this.pdfDocument.getData();
|
|
const blob = new Blob([data], { type: "application/pdf" });
|
|
|
|
await this.downloadManager.download(blob, url, filename, options);
|
|
} catch {
|
|
// When the PDF document isn't ready, or the PDF file is still
|
|
// downloading, simply download using the URL.
|
|
await this.downloadManager.downloadUrl(url, filename, options);
|
|
}
|
|
},
|
|
|
|
async save(options = {}) {
|
|
if (this._saveInProgress) {
|
|
return;
|
|
}
|
|
this._saveInProgress = true;
|
|
await this.pdfScriptingManager.dispatchWillSave();
|
|
|
|
const url = this._downloadUrl,
|
|
filename = this._docFilename;
|
|
try {
|
|
this._ensureDownloadComplete();
|
|
|
|
const data = await this.pdfDocument.saveDocument();
|
|
const blob = new Blob([data], { type: "application/pdf" });
|
|
|
|
await this.downloadManager.download(blob, url, filename, options);
|
|
} catch (reason) {
|
|
// When the PDF document isn't ready, or the PDF file is still
|
|
// downloading, simply fallback to a "regular" download.
|
|
console.error(`Error when saving the document: ${reason.message}`);
|
|
await this.download(options);
|
|
} finally {
|
|
await this.pdfScriptingManager.dispatchDidSave();
|
|
this._saveInProgress = false;
|
|
}
|
|
|
|
if (this._hasAnnotationEditors) {
|
|
this.externalServices.reportTelemetry({
|
|
type: "editing",
|
|
data: { type: "save" },
|
|
});
|
|
}
|
|
},
|
|
|
|
downloadOrSave(options = {}) {
|
|
if (this.pdfDocument?.annotationStorage.size > 0) {
|
|
this.save(options);
|
|
} else {
|
|
this.download(options);
|
|
}
|
|
},
|
|
|
|
openInExternalApp() {
|
|
this.downloadOrSave({ openInExternalApp: true });
|
|
},
|
|
|
|
/**
|
|
* Report the error; used for errors affecting loading and/or parsing of
|
|
* the entire PDF document.
|
|
*/
|
|
_documentError(message, moreInfo = null) {
|
|
this._unblockDocumentLoadEvent();
|
|
|
|
this._otherError(message, moreInfo);
|
|
|
|
this.eventBus.dispatch("documenterror", {
|
|
source: this,
|
|
message,
|
|
reason: moreInfo?.message ?? null,
|
|
});
|
|
},
|
|
|
|
/**
|
|
* Report the error; used for errors affecting e.g. only a single page.
|
|
* @param {string} message - A message that is human readable.
|
|
* @param {Object} [moreInfo] - Further information about the error that is
|
|
* more technical. Should have a 'message' and
|
|
* optionally a 'stack' property.
|
|
*/
|
|
_otherError(message, moreInfo = null) {
|
|
const moreInfoText = [`PDF.js v${version || "?"} (build: ${build || "?"})`];
|
|
if (moreInfo) {
|
|
moreInfoText.push(`Message: ${moreInfo.message}`);
|
|
|
|
if (moreInfo.stack) {
|
|
moreInfoText.push(`Stack: ${moreInfo.stack}`);
|
|
} else {
|
|
if (moreInfo.filename) {
|
|
moreInfoText.push(`File: ${moreInfo.filename}`);
|
|
}
|
|
if (moreInfo.lineNumber) {
|
|
moreInfoText.push(`Line: ${moreInfo.lineNumber}`);
|
|
}
|
|
}
|
|
}
|
|
|
|
console.error(`${message}\n\n${moreInfoText.join("\n")}`);
|
|
},
|
|
|
|
progress(level) {
|
|
if (!this.loadingBar || 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) {
|
|
return;
|
|
}
|
|
this.loadingBar.percent = percent;
|
|
|
|
// When disableAutoFetch is enabled, it's not uncommon for the entire file
|
|
// to never be fetched (depends on e.g. the file structure). In this case
|
|
// the loading bar will not be completely filled, nor will it be hidden.
|
|
// To prevent displaying a partially filled loading bar permanently, we
|
|
// hide it when no data has been loaded during a certain amount of time.
|
|
if (
|
|
this.pdfDocument?.loadingParams.disableAutoFetch ??
|
|
AppOptions.get("disableAutoFetch")
|
|
) {
|
|
this.loadingBar.setDisableAutoFetch();
|
|
}
|
|
},
|
|
|
|
load(pdfDocument) {
|
|
this.pdfDocument = pdfDocument;
|
|
|
|
pdfDocument.getDownloadInfo().then(({ length }) => {
|
|
this._contentLength = length; // Ensure that the correct length is used.
|
|
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(() => {
|
|
/* Avoid breaking initial rendering; ignoring errors. */
|
|
});
|
|
const pageModePromise = pdfDocument.getPageMode().catch(() => {
|
|
/* Avoid breaking initial rendering; ignoring errors. */
|
|
});
|
|
const openActionPromise = pdfDocument.getOpenAction().catch(() => {
|
|
/* Avoid breaking initial rendering; ignoring errors. */
|
|
});
|
|
|
|
this.toolbar?.setPagesCount(pdfDocument.numPages, false);
|
|
this.secondaryToolbar?.setPagesCount(pdfDocument.numPages);
|
|
|
|
if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("CHROME")) {
|
|
const baseUrl = location.href.split("#", 1)[0];
|
|
// Ignore "data:"-URLs for performance reasons, even though it may cause
|
|
// internal links to not work perfectly in all cases (see bug 1803050).
|
|
this.pdfLinkService.setDocument(
|
|
pdfDocument,
|
|
isDataScheme(baseUrl) ? null : baseUrl
|
|
);
|
|
} else {
|
|
this.pdfLinkService.setDocument(pdfDocument);
|
|
}
|
|
this.pdfDocumentProperties?.setDocument(pdfDocument);
|
|
|
|
const pdfViewer = this.pdfViewer;
|
|
pdfViewer.setDocument(pdfDocument);
|
|
const { firstPagePromise, onePageRendered, pagesPromise } = pdfViewer;
|
|
|
|
this.pdfThumbnailViewer?.setDocument(pdfDocument);
|
|
|
|
const storedPromise = (this.store = new ViewHistory(
|
|
pdfDocument.fingerprints[0]
|
|
))
|
|
.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. */
|
|
});
|
|
|
|
firstPagePromise.then(pdfPage => {
|
|
this.loadingBar?.setWidth(this.appConfig.viewerContainer);
|
|
this._initializeAnnotationStorageCallbacks(pdfDocument);
|
|
|
|
Promise.all([
|
|
animationStarted,
|
|
storedPromise,
|
|
pageLayoutPromise,
|
|
pageModePromise,
|
|
openActionPromise,
|
|
])
|
|
.then(async ([timeStamp, stored, pageLayout, pageMode, openAction]) => {
|
|
const viewOnLoad = AppOptions.get("viewOnLoad");
|
|
|
|
this._initializePdfHistory({
|
|
fingerprint: pdfDocument.fingerprints[0],
|
|
viewOnLoad,
|
|
initialDest: 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 &&
|
|
scrollMode === ScrollMode.UNKNOWN &&
|
|
spreadMode === SpreadMode.UNKNOWN
|
|
) {
|
|
const modes = apiPageLayoutToViewerModes(pageLayout);
|
|
// TODO: Try to improve page-switching when using the mouse-wheel
|
|
// and/or arrow-keys before allowing the document to control this.
|
|
// scrollMode = modes.scrollMode;
|
|
spreadMode = modes.spreadMode;
|
|
}
|
|
|
|
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();
|
|
}
|
|
|
|
// 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._unblockDocumentLoadEvent();
|
|
|
|
this._initializeAutoPrint(pdfDocument, openActionPromise);
|
|
},
|
|
reason => {
|
|
this.l10n.get("pdfjs-loading-error").then(msg => {
|
|
this._documentError(msg, { message: reason?.message });
|
|
});
|
|
}
|
|
);
|
|
|
|
onePageRendered.then(data => {
|
|
this.externalServices.reportTelemetry({
|
|
type: "pageInfo",
|
|
timestamp: data.timestamp,
|
|
});
|
|
|
|
if (this.pdfOutlineViewer) {
|
|
pdfDocument.getOutline().then(outline => {
|
|
if (pdfDocument !== this.pdfDocument) {
|
|
return; // The document was closed while the outline resolved.
|
|
}
|
|
this.pdfOutlineViewer.render({ outline, pdfDocument });
|
|
});
|
|
}
|
|
if (this.pdfAttachmentViewer) {
|
|
pdfDocument.getAttachments().then(attachments => {
|
|
if (pdfDocument !== this.pdfDocument) {
|
|
return; // The document was closed while the attachments resolved.
|
|
}
|
|
this.pdfAttachmentViewer.render({ attachments });
|
|
});
|
|
}
|
|
if (this.pdfLayerViewer) {
|
|
// 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 => {
|
|
if (pdfDocument !== this.pdfDocument) {
|
|
return; // The document was closed while the layers resolved.
|
|
}
|
|
this.pdfLayerViewer.render({ optionalContentConfig, pdfDocument });
|
|
});
|
|
}
|
|
});
|
|
|
|
this._initializePageLabels(pdfDocument);
|
|
this._initializeMetadata(pdfDocument);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
async _scriptingDocProperties(pdfDocument) {
|
|
if (!this.documentInfo) {
|
|
// It should be *extremely* rare for metadata to not have been resolved
|
|
// when this code runs, but ensure that we handle that case here.
|
|
await new Promise(resolve => {
|
|
this.eventBus._on("metadataloaded", resolve, { once: true });
|
|
});
|
|
if (pdfDocument !== this.pdfDocument) {
|
|
return null; // The document was closed while the metadata resolved.
|
|
}
|
|
}
|
|
if (!this._contentLength) {
|
|
// Always waiting for the entire PDF document to be loaded will, most
|
|
// likely, delay sandbox-creation too much in the general case for all
|
|
// PDF documents which are not provided as binary data to the API.
|
|
// Hence we'll simply have to trust that the `contentLength` (as provided
|
|
// by the server), when it exists, is accurate enough here.
|
|
await new Promise(resolve => {
|
|
this.eventBus._on("documentloaded", resolve, { once: true });
|
|
});
|
|
if (pdfDocument !== this.pdfDocument) {
|
|
return null; // The document was closed while the downloadInfo resolved.
|
|
}
|
|
}
|
|
|
|
return {
|
|
...this.documentInfo,
|
|
baseURL: this.baseUrl,
|
|
filesize: this._contentLength,
|
|
filename: this._docFilename,
|
|
metadata: this.metadata?.getRaw(),
|
|
authors: this.metadata?.get("dc:creator"),
|
|
numPages: this.pagesCount,
|
|
URL: this.url,
|
|
};
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
async _initializeAutoPrint(pdfDocument, openActionPromise) {
|
|
const [openAction, jsActions] = await Promise.all([
|
|
openActionPromise,
|
|
this.pdfViewer.enableScripting ? null : pdfDocument.getJSActions(),
|
|
]);
|
|
|
|
if (pdfDocument !== this.pdfDocument) {
|
|
return; // The document was closed while the auto print data resolved.
|
|
}
|
|
let triggerAutoPrint = openAction?.action === "Print";
|
|
|
|
if (jsActions) {
|
|
console.warn("Warning: JavaScript support is not enabled");
|
|
|
|
// Hack to support auto printing.
|
|
for (const name in jsActions) {
|
|
if (triggerAutoPrint) {
|
|
break;
|
|
}
|
|
switch (name) {
|
|
case "WillClose":
|
|
case "WillSave":
|
|
case "DidSave":
|
|
case "WillPrint":
|
|
case "DidPrint":
|
|
continue;
|
|
}
|
|
triggerAutoPrint = jsActions[name].some(js => AutoPrintRegExp.test(js));
|
|
}
|
|
}
|
|
|
|
if (triggerAutoPrint) {
|
|
this.triggerPrinting();
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
async _initializeMetadata(pdfDocument) {
|
|
const { info, metadata, contentDispositionFilename, contentLength } =
|
|
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;
|
|
this._contentLength ??= contentLength; // See `getDownloadInfo`-call above.
|
|
|
|
// Provides some basic debug information
|
|
console.log(
|
|
`PDF ${pdfDocument.fingerprints[0]} [${info.PDFFormatVersion} ` +
|
|
`${(info.Producer || "-").trim()} / ${(info.Creator || "-").trim()}] ` +
|
|
`(PDF.js: ${version || "?"} [${build || "?"}])`
|
|
);
|
|
let pdfTitle = info.Title;
|
|
|
|
const metadataTitle = 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} - ${this._contentDispositionFilename || this._title}`
|
|
);
|
|
} else if (this._contentDispositionFilename) {
|
|
this.setTitle(this._contentDispositionFilename);
|
|
}
|
|
|
|
if (
|
|
info.IsXFAPresent &&
|
|
!info.IsAcroFormPresent &&
|
|
!pdfDocument.isPureXfa
|
|
) {
|
|
if (pdfDocument.loadingParams.enableXfa) {
|
|
console.warn("Warning: XFA Foreground documents are not supported");
|
|
} else {
|
|
console.warn("Warning: XFA support is not enabled");
|
|
}
|
|
} else if (
|
|
(info.IsAcroFormPresent || info.IsXFAPresent) &&
|
|
!this.pdfViewer.renderForms
|
|
) {
|
|
console.warn("Warning: Interactive form support is not enabled");
|
|
}
|
|
|
|
if (info.IsSignaturesPresent) {
|
|
console.warn("Warning: Digital signatures validation is not supported");
|
|
}
|
|
|
|
this.eventBus.dispatch("metadataloaded", { source: this });
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
async _initializePageLabels(pdfDocument) {
|
|
if (
|
|
typeof PDFJSDev === "undefined"
|
|
? window.isGECKOVIEW
|
|
: PDFJSDev.test("GECKOVIEW")
|
|
) {
|
|
return;
|
|
}
|
|
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;
|
|
// Ignore page labels that correspond to standard page numbering,
|
|
// or page labels that are all empty.
|
|
let standardLabels = 0,
|
|
emptyLabels = 0;
|
|
for (let i = 0; i < numLabels; i++) {
|
|
const label = labels[i];
|
|
if (label === (i + 1).toString()) {
|
|
standardLabels++;
|
|
} else if (label === "") {
|
|
emptyLabels++;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
if (standardLabels >= numLabels || emptyLabels >= 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.pdfHistory) {
|
|
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
|
|
*/
|
|
_initializeAnnotationStorageCallbacks(pdfDocument) {
|
|
if (pdfDocument !== this.pdfDocument) {
|
|
return;
|
|
}
|
|
const { annotationStorage } = pdfDocument;
|
|
|
|
annotationStorage.onSetModified = () => {
|
|
window.addEventListener("beforeunload", beforeUnload);
|
|
|
|
if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
|
|
this._annotationStorageModified = true;
|
|
}
|
|
};
|
|
annotationStorage.onResetModified = () => {
|
|
window.removeEventListener("beforeunload", beforeUnload);
|
|
|
|
if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
|
|
delete this._annotationStorageModified;
|
|
}
|
|
};
|
|
annotationStorage.onAnnotationEditor = typeStr => {
|
|
this._hasAnnotationEditors = !!typeStr;
|
|
this.setTitle();
|
|
|
|
if (typeStr) {
|
|
this.externalServices.reportTelemetry({
|
|
type: "editing",
|
|
data: { type: typeStr },
|
|
});
|
|
}
|
|
};
|
|
},
|
|
|
|
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;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_cleanup() {
|
|
if (!this.pdfDocument) {
|
|
return; // run cleanup when document is loaded
|
|
}
|
|
this.pdfViewer.cleanup();
|
|
this.pdfThumbnailViewer?.cleanup();
|
|
|
|
this.pdfDocument.cleanup(
|
|
/* keepLoadedFonts = */ AppOptions.get("fontExtraProperties")
|
|
);
|
|
},
|
|
|
|
forceRendering() {
|
|
this.pdfRenderingQueue.printing = !!this.printService;
|
|
this.pdfRenderingQueue.isThumbnailViewEnabled =
|
|
this.pdfSidebar?.visibleView === SidebarView.THUMBS;
|
|
this.pdfRenderingQueue.renderHighestPriority();
|
|
},
|
|
|
|
beforePrint() {
|
|
this._printAnnotationStoragePromise = this.pdfScriptingManager
|
|
.dispatchWillPrint()
|
|
.catch(() => {
|
|
/* Avoid breaking printing; ignoring errors. */
|
|
})
|
|
.then(() => {
|
|
return this.pdfDocument?.annotationStorage.print;
|
|
});
|
|
|
|
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("pdfjs-printing-not-supported").then(msg => {
|
|
this._otherError(msg);
|
|
});
|
|
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("pdfjs-printing-not-ready").then(msg => {
|
|
// eslint-disable-next-line no-alert
|
|
window.alert(msg);
|
|
});
|
|
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._printAnnotationStoragePromise
|
|
);
|
|
this.printService = printService;
|
|
this.forceRendering();
|
|
// Disable the editor-indicator during printing (fixes bug 1790552).
|
|
this.setTitle();
|
|
|
|
printService.layout();
|
|
|
|
if (this._hasAnnotationEditors) {
|
|
this.externalServices.reportTelemetry({
|
|
type: "editing",
|
|
data: { type: "print" },
|
|
});
|
|
}
|
|
},
|
|
|
|
afterPrint() {
|
|
if (this._printAnnotationStoragePromise) {
|
|
this._printAnnotationStoragePromise.then(() => {
|
|
this.pdfScriptingManager.dispatchDidPrint();
|
|
});
|
|
this._printAnnotationStoragePromise = null;
|
|
}
|
|
|
|
if (this.printService) {
|
|
this.printService.destroy();
|
|
this.printService = null;
|
|
|
|
this.pdfDocument?.annotationStorage.resetModified();
|
|
}
|
|
this.forceRendering();
|
|
// Re-enable the editor-indicator after printing (fixes bug 1790552).
|
|
this.setTitle();
|
|
},
|
|
|
|
rotatePages(delta) {
|
|
this.pdfViewer.pagesRotation += delta;
|
|
// Note that the thumbnail viewer is updated, and rendering is triggered,
|
|
// in the 'rotationchanging' event handler.
|
|
},
|
|
|
|
requestPresentationMode() {
|
|
this.pdfPresentationMode?.request();
|
|
},
|
|
|
|
triggerPrinting() {
|
|
if (!this.supportsPrinting) {
|
|
return;
|
|
}
|
|
window.print();
|
|
},
|
|
|
|
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("pagerender", webViewerPageRender);
|
|
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(
|
|
"switchannotationeditormode",
|
|
webViewerSwitchAnnotationEditorMode
|
|
);
|
|
eventBus._on(
|
|
"switchannotationeditorparams",
|
|
webViewerSwitchAnnotationEditorParams
|
|
);
|
|
eventBus._on("print", webViewerPrint);
|
|
eventBus._on("download", webViewerDownload);
|
|
eventBus._on("openinexternalapp", webViewerOpenInExternalApp);
|
|
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("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);
|
|
}
|
|
if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("MOZCENTRAL")) {
|
|
// The `unbindEvents` method is unused in MOZCENTRAL builds,
|
|
// hence we don't need to unregister these event listeners.
|
|
eventBus._on(
|
|
"annotationeditorstateschanged",
|
|
webViewerAnnotationEditorStatesChanged
|
|
);
|
|
eventBus._on("reporttelemetry", webViewerReportTelemetry);
|
|
}
|
|
},
|
|
|
|
bindWindowEvents() {
|
|
const { eventBus, _boundEvents } = this;
|
|
|
|
function addWindowResolutionChange(evt = null) {
|
|
if (evt) {
|
|
webViewerResolutionChange(evt);
|
|
}
|
|
const mediaQueryList = window.matchMedia(
|
|
`(resolution: ${window.devicePixelRatio || 1}dppx)`
|
|
);
|
|
mediaQueryList.addEventListener("change", addWindowResolutionChange, {
|
|
once: true,
|
|
});
|
|
|
|
if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("MOZCENTRAL")) {
|
|
return;
|
|
}
|
|
_boundEvents.removeWindowResolutionChange ||= function () {
|
|
mediaQueryList.removeEventListener("change", addWindowResolutionChange);
|
|
_boundEvents.removeWindowResolutionChange = null;
|
|
};
|
|
}
|
|
addWindowResolutionChange();
|
|
|
|
_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 });
|
|
};
|
|
_boundEvents.windowUpdateFromSandbox = event => {
|
|
eventBus.dispatch("updatefromsandbox", {
|
|
source: window,
|
|
detail: event.detail,
|
|
});
|
|
};
|
|
|
|
window.addEventListener("visibilitychange", webViewerVisibilityChange);
|
|
window.addEventListener("wheel", webViewerWheel, { passive: false });
|
|
window.addEventListener("touchstart", webViewerTouchStart, {
|
|
passive: false,
|
|
});
|
|
window.addEventListener("touchmove", webViewerTouchMove, {
|
|
passive: false,
|
|
});
|
|
window.addEventListener("touchend", webViewerTouchEnd, {
|
|
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);
|
|
window.addEventListener(
|
|
"updatefromsandbox",
|
|
_boundEvents.windowUpdateFromSandbox
|
|
);
|
|
},
|
|
|
|
unbindEvents() {
|
|
if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("MOZCENTRAL")) {
|
|
throw new Error("Not implemented: 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("pagerender", webViewerPageRender);
|
|
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("openinexternalapp", webViewerOpenInExternalApp);
|
|
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("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() {
|
|
if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("MOZCENTRAL")) {
|
|
throw new Error("Not implemented: unbindWindowEvents");
|
|
}
|
|
const { _boundEvents } = this;
|
|
|
|
window.removeEventListener("visibilitychange", webViewerVisibilityChange);
|
|
window.removeEventListener("wheel", webViewerWheel, { passive: false });
|
|
window.removeEventListener("touchstart", webViewerTouchStart, {
|
|
passive: false,
|
|
});
|
|
window.removeEventListener("touchmove", webViewerTouchMove, {
|
|
passive: false,
|
|
});
|
|
window.removeEventListener("touchend", webViewerTouchEnd, {
|
|
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);
|
|
window.removeEventListener(
|
|
"updatefromsandbox",
|
|
_boundEvents.windowUpdateFromSandbox
|
|
);
|
|
|
|
_boundEvents.removeWindowResolutionChange?.();
|
|
_boundEvents.windowResize = null;
|
|
_boundEvents.windowHashChange = null;
|
|
_boundEvents.windowBeforePrint = null;
|
|
_boundEvents.windowAfterPrint = null;
|
|
_boundEvents.windowUpdateFromSandbox = null;
|
|
},
|
|
|
|
_accumulateTicks(ticks, prop) {
|
|
// If the direction changed, reset the accumulated ticks.
|
|
if ((this[prop] > 0 && ticks < 0) || (this[prop] < 0 && ticks > 0)) {
|
|
this[prop] = 0;
|
|
}
|
|
this[prop] += ticks;
|
|
const wholeTicks = Math.trunc(this[prop]);
|
|
this[prop] -= wholeTicks;
|
|
return wholeTicks;
|
|
},
|
|
|
|
_accumulateFactor(previousScale, factor, prop) {
|
|
if (factor === 1) {
|
|
return 1;
|
|
}
|
|
// If the direction changed, reset the accumulated factor.
|
|
if ((this[prop] > 1 && factor < 1) || (this[prop] < 1 && factor > 1)) {
|
|
this[prop] = 1;
|
|
}
|
|
|
|
const newFactor =
|
|
Math.floor(previousScale * factor * this[prop] * 100) /
|
|
(100 * previousScale);
|
|
this[prop] = factor / newFactor;
|
|
|
|
return newFactor;
|
|
},
|
|
|
|
_centerAtPos(previousScale, x, y) {
|
|
const { pdfViewer } = this;
|
|
const scaleDiff = pdfViewer.currentScale / previousScale - 1;
|
|
if (scaleDiff !== 0) {
|
|
const [top, left] = pdfViewer.containerTopLeft;
|
|
pdfViewer.container.scrollLeft += (x - left) * scaleDiff;
|
|
pdfViewer.container.scrollTop += (y - top) * scaleDiff;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Should be called *after* all pages have loaded, or if an error occurred,
|
|
* to unblock the "load" event; see https://bugzilla.mozilla.org/show_bug.cgi?id=1618553
|
|
* @private
|
|
*/
|
|
_unblockDocumentLoadEvent() {
|
|
document.blockUnblockOnload?.(false);
|
|
|
|
// Ensure that this method is only ever run once.
|
|
this._unblockDocumentLoadEvent = () => {};
|
|
},
|
|
|
|
/**
|
|
* Used together with the integration-tests, to enable awaiting full
|
|
* initialization of the scripting/sandbox.
|
|
*/
|
|
get scriptingReady() {
|
|
return this.pdfScriptingManager.ready;
|
|
},
|
|
};
|
|
|
|
if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
|
|
const HOSTED_VIEWER_ORIGINS = [
|
|
"null",
|
|
"http://mozilla.github.io",
|
|
"https://mozilla.github.io",
|
|
];
|
|
// eslint-disable-next-line no-var
|
|
var validateFileURL = function (file) {
|
|
if (!file) {
|
|
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 fileOrigin = new URL(file, window.location.href).origin;
|
|
// Removing of the following line will not guarantee that the viewer will
|
|
// start accepting URLs from foreign origin -- CORS headers on the remote
|
|
// server must be properly configured.
|
|
if (fileOrigin !== viewerOrigin) {
|
|
throw new Error("file origin does not match viewer's");
|
|
}
|
|
} catch (ex) {
|
|
PDFViewerApplication.l10n.get("pdfjs-loading-error").then(msg => {
|
|
PDFViewerApplication._documentError(msg, { message: ex?.message });
|
|
});
|
|
throw ex;
|
|
}
|
|
};
|
|
}
|
|
|
|
async function loadFakeWorker() {
|
|
GlobalWorkerOptions.workerSrc ||= AppOptions.get("workerSrc");
|
|
|
|
if (typeof PDFJSDev === "undefined") {
|
|
globalThis.pdfjsWorker = await import("pdfjs/pdf.worker.js");
|
|
return;
|
|
}
|
|
await __non_webpack_import__(PDFWorker.workerSrc);
|
|
}
|
|
|
|
async function loadPDFBug(self) {
|
|
const { debuggerScriptPath } = self.appConfig;
|
|
const { PDFBug } =
|
|
typeof PDFJSDev === "undefined"
|
|
? await import(debuggerScriptPath) // eslint-disable-line no-unsanitized/method
|
|
: await __non_webpack_import__(debuggerScriptPath);
|
|
|
|
self._PDFBug = PDFBug;
|
|
}
|
|
|
|
function reportPageStatsPDFBug({ pageNumber }) {
|
|
if (!globalThis.Stats?.enabled) {
|
|
return;
|
|
}
|
|
const pageView = PDFViewerApplication.pdfViewer.getPageView(
|
|
/* index = */ pageNumber - 1
|
|
);
|
|
globalThis.Stats.add(pageNumber, pageView?.pdfPage?.stats);
|
|
}
|
|
|
|
function webViewerPageRender({ pageNumber }) {
|
|
// If the page is (the most) visible when it starts rendering,
|
|
// ensure that the page number input loading indicator is displayed.
|
|
if (pageNumber === PDFViewerApplication.page) {
|
|
PDFViewerApplication.toolbar?.updateLoadingIndicatorState(true);
|
|
}
|
|
}
|
|
|
|
function webViewerPageRendered({ pageNumber, error }) {
|
|
// 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);
|
|
}
|
|
|
|
// Use the rendered page to set the corresponding thumbnail image.
|
|
if (PDFViewerApplication.pdfSidebar?.visibleView === SidebarView.THUMBS) {
|
|
const pageView = PDFViewerApplication.pdfViewer.getPageView(
|
|
/* index = */ pageNumber - 1
|
|
);
|
|
const thumbnailView = PDFViewerApplication.pdfThumbnailViewer?.getThumbnail(
|
|
/* index = */ pageNumber - 1
|
|
);
|
|
if (pageView) {
|
|
thumbnailView?.setImage(pageView);
|
|
}
|
|
}
|
|
|
|
if (error) {
|
|
PDFViewerApplication.l10n.get("pdfjs-rendering-error").then(msg => {
|
|
PDFViewerApplication._otherError(msg, error);
|
|
});
|
|
}
|
|
}
|
|
|
|
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":
|
|
PDFViewerApplication.triggerPrinting();
|
|
break;
|
|
|
|
case "SaveAs":
|
|
PDFViewerApplication.downloadOrSave();
|
|
break;
|
|
}
|
|
}
|
|
|
|
function webViewerPresentationModeChanged(evt) {
|
|
PDFViewerApplication.pdfViewer.presentationModeState = evt.state;
|
|
}
|
|
|
|
function webViewerSidebarViewChanged({ view }) {
|
|
PDFViewerApplication.pdfRenderingQueue.isThumbnailViewEnabled =
|
|
view === SidebarView.THUMBS;
|
|
|
|
if (PDFViewerApplication.isInitialViewSet) {
|
|
// Only update the storage when the document has been loaded *and* rendered.
|
|
PDFViewerApplication.store?.set("sidebarView", view).catch(() => {
|
|
// Unable to write to storage.
|
|
});
|
|
}
|
|
}
|
|
|
|
function webViewerUpdateViewarea({ location }) {
|
|
if (PDFViewerApplication.isInitialViewSet) {
|
|
// Only update the storage when the document has been loaded *and* rendered.
|
|
PDFViewerApplication.store
|
|
?.setMultiple({
|
|
page: location.pageNumber,
|
|
zoom: location.scale,
|
|
scrollLeft: location.left,
|
|
scrollTop: location.top,
|
|
rotation: location.rotation,
|
|
})
|
|
.catch(() => {
|
|
// Unable to write to storage.
|
|
});
|
|
}
|
|
if (PDFViewerApplication.appConfig.secondaryToolbar) {
|
|
const href = PDFViewerApplication.pdfLinkService.getAnchorUrl(
|
|
location.pdfOpenParams
|
|
);
|
|
PDFViewerApplication.appConfig.secondaryToolbar.viewBookmarkButton.href =
|
|
href;
|
|
}
|
|
}
|
|
|
|
function webViewerScrollModeChanged(evt) {
|
|
if (
|
|
PDFViewerApplication.isInitialViewSet &&
|
|
!PDFViewerApplication.pdfViewer.isInPresentationMode
|
|
) {
|
|
// Only update the storage when the document has been loaded *and* rendered.
|
|
PDFViewerApplication.store?.set("scrollMode", evt.mode).catch(() => {
|
|
// Unable to write to storage.
|
|
});
|
|
}
|
|
}
|
|
|
|
function webViewerSpreadModeChanged(evt) {
|
|
if (
|
|
PDFViewerApplication.isInitialViewSet &&
|
|
!PDFViewerApplication.pdfViewer.isInPresentationMode
|
|
) {
|
|
// Only update the storage when the document has been loaded *and* rendered.
|
|
PDFViewerApplication.store?.set("spreadMode", evt.mode).catch(() => {
|
|
// Unable to write to storage.
|
|
});
|
|
}
|
|
}
|
|
|
|
function webViewerResize() {
|
|
const { pdfDocument, pdfViewer, pdfRenderingQueue } = PDFViewerApplication;
|
|
|
|
if (pdfRenderingQueue.printing && window.matchMedia("print").matches) {
|
|
// Work-around issue 15324 by ignoring "resize" events during printing.
|
|
return;
|
|
}
|
|
|
|
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);
|
|
}
|
|
}
|
|
|
|
if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
|
|
// eslint-disable-next-line no-var
|
|
var webViewerFileInputChange = function (evt) {
|
|
if (PDFViewerApplication.pdfViewer?.isInPresentationMode) {
|
|
return; // Opening a new PDF file isn't supported in Presentation Mode.
|
|
}
|
|
const file = evt.fileInput.files[0];
|
|
|
|
PDFViewerApplication.open({
|
|
url: URL.createObjectURL(file),
|
|
originalUrl: file.name,
|
|
});
|
|
};
|
|
|
|
// eslint-disable-next-line no-var
|
|
var webViewerOpenFile = function (evt) {
|
|
const fileInput = PDFViewerApplication.appConfig.openFileInput;
|
|
fileInput.click();
|
|
};
|
|
}
|
|
|
|
function webViewerPresentationMode() {
|
|
PDFViewerApplication.requestPresentationMode();
|
|
}
|
|
function webViewerSwitchAnnotationEditorMode(evt) {
|
|
PDFViewerApplication.pdfViewer.annotationEditorMode = evt;
|
|
}
|
|
function webViewerSwitchAnnotationEditorParams(evt) {
|
|
PDFViewerApplication.pdfViewer.annotationEditorParams = evt;
|
|
}
|
|
function webViewerPrint() {
|
|
PDFViewerApplication.triggerPrinting();
|
|
}
|
|
function webViewerDownload() {
|
|
PDFViewerApplication.downloadOrSave();
|
|
}
|
|
function webViewerOpenInExternalApp() {
|
|
PDFViewerApplication.openInExternalApp();
|
|
}
|
|
function webViewerFirstPage() {
|
|
PDFViewerApplication.page = 1;
|
|
}
|
|
function webViewerLastPage() {
|
|
PDFViewerApplication.page = PDFViewerApplication.pagesCount;
|
|
}
|
|
function webViewerNextPage() {
|
|
PDFViewerApplication.pdfViewer.nextPage();
|
|
}
|
|
function webViewerPreviousPage() {
|
|
PDFViewerApplication.pdfViewer.previousPage();
|
|
}
|
|
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 !== "") {
|
|
PDFViewerApplication.pdfLinkService.goToPage(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 webViewerFindFromUrlHash(evt) {
|
|
PDFViewerApplication.eventBus.dispatch("find", {
|
|
source: evt.source,
|
|
type: "",
|
|
query: evt.query,
|
|
caseSensitive: false,
|
|
entireWord: false,
|
|
highlightAll: true,
|
|
findPrevious: false,
|
|
matchDiacritics: true,
|
|
});
|
|
}
|
|
|
|
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) {
|
|
if (PDFViewerApplication.pdfThumbnailViewer) {
|
|
PDFViewerApplication.pdfThumbnailViewer.pagesRotation = evt.pagesRotation;
|
|
}
|
|
|
|
PDFViewerApplication.forceRendering();
|
|
// Ensure that the active page doesn't change during rotation.
|
|
PDFViewerApplication.pdfViewer.currentPageNumber = evt.pageNumber;
|
|
}
|
|
|
|
function webViewerPageChanging({ pageNumber, pageLabel }) {
|
|
PDFViewerApplication.toolbar?.setPageNumber(pageNumber, pageLabel);
|
|
PDFViewerApplication.secondaryToolbar?.setPageNumber(pageNumber);
|
|
|
|
if (PDFViewerApplication.pdfSidebar?.visibleView === SidebarView.THUMBS) {
|
|
PDFViewerApplication.pdfThumbnailViewer?.scrollThumbnailIntoView(
|
|
pageNumber
|
|
);
|
|
}
|
|
|
|
// Show/hide the loading indicator in the page number input element.
|
|
const currentPage = PDFViewerApplication.pdfViewer.getPageView(
|
|
/* index = */ pageNumber - 1
|
|
);
|
|
PDFViewerApplication.toolbar?.updateLoadingIndicatorState(
|
|
currentPage?.renderingState === RenderingStates.RUNNING
|
|
);
|
|
}
|
|
|
|
function webViewerResolutionChange(evt) {
|
|
PDFViewerApplication.pdfViewer.refresh();
|
|
}
|
|
|
|
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,
|
|
supportsMouseWheelZoomCtrlKey,
|
|
supportsMouseWheelZoomMetaKey,
|
|
supportsPinchToZoom,
|
|
} = PDFViewerApplication;
|
|
|
|
if (pdfViewer.isInPresentationMode) {
|
|
return;
|
|
}
|
|
|
|
// Pinch-to-zoom on a trackpad maps to a wheel event with ctrlKey set to true
|
|
// https://developer.mozilla.org/en-US/docs/Web/API/WheelEvent#browser_compatibility
|
|
// Hence if ctrlKey is true but ctrl key hasn't been pressed then we can
|
|
// infer that we have a pinch-to-zoom.
|
|
// But the ctrlKey could have been pressed outside of the browser window,
|
|
// hence we try to do some magic to guess if the scaleFactor is likely coming
|
|
// from a pinch-to-zoom or not.
|
|
|
|
// It is important that we query deltaMode before delta{X,Y}, so that
|
|
// Firefox doesn't switch to DOM_DELTA_PIXEL mode for compat with other
|
|
// browsers, see https://bugzilla.mozilla.org/show_bug.cgi?id=1392460.
|
|
const deltaMode = evt.deltaMode;
|
|
|
|
// The following formula is a bit strange but it comes from:
|
|
// https://searchfox.org/mozilla-central/rev/d62c4c4d5547064487006a1506287da394b64724/widget/InputData.cpp#618-626
|
|
let scaleFactor = Math.exp(-evt.deltaY / 100);
|
|
|
|
const isBuiltInMac =
|
|
typeof PDFJSDev !== "undefined" &&
|
|
PDFJSDev.test("MOZCENTRAL") &&
|
|
FeatureTest.platform.isMac;
|
|
const isPinchToZoom =
|
|
evt.ctrlKey &&
|
|
!PDFViewerApplication._isCtrlKeyDown &&
|
|
deltaMode === WheelEvent.DOM_DELTA_PIXEL &&
|
|
evt.deltaX === 0 &&
|
|
(Math.abs(scaleFactor - 1) < 0.05 || isBuiltInMac) &&
|
|
evt.deltaZ === 0;
|
|
|
|
if (
|
|
isPinchToZoom ||
|
|
(evt.ctrlKey && supportsMouseWheelZoomCtrlKey) ||
|
|
(evt.metaKey && supportsMouseWheelZoomMetaKey)
|
|
) {
|
|
// Only zoom the pages, not the entire viewer.
|
|
evt.preventDefault();
|
|
// NOTE: this check must be placed *after* preventDefault.
|
|
if (
|
|
zoomDisabledTimeout ||
|
|
document.visibilityState === "hidden" ||
|
|
PDFViewerApplication.overlayManager.active
|
|
) {
|
|
return;
|
|
}
|
|
|
|
const previousScale = pdfViewer.currentScale;
|
|
if (isPinchToZoom && supportsPinchToZoom) {
|
|
scaleFactor = PDFViewerApplication._accumulateFactor(
|
|
previousScale,
|
|
scaleFactor,
|
|
"_wheelUnusedFactor"
|
|
);
|
|
if (scaleFactor < 1) {
|
|
PDFViewerApplication.zoomOut(null, scaleFactor);
|
|
} else if (scaleFactor > 1) {
|
|
PDFViewerApplication.zoomIn(null, scaleFactor);
|
|
} else {
|
|
return;
|
|
}
|
|
} else {
|
|
const delta = normalizeWheelEventDirection(evt);
|
|
|
|
let ticks = 0;
|
|
if (
|
|
deltaMode === WheelEvent.DOM_DELTA_LINE ||
|
|
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._accumulateTicks(
|
|
delta,
|
|
"_wheelUnusedTicks"
|
|
);
|
|
}
|
|
} else {
|
|
// pixel-based devices
|
|
const PIXELS_PER_LINE_SCALE = 30;
|
|
ticks = PDFViewerApplication._accumulateTicks(
|
|
delta / PIXELS_PER_LINE_SCALE,
|
|
"_wheelUnusedTicks"
|
|
);
|
|
}
|
|
|
|
if (ticks < 0) {
|
|
PDFViewerApplication.zoomOut(-ticks);
|
|
} else if (ticks > 0) {
|
|
PDFViewerApplication.zoomIn(ticks);
|
|
} else {
|
|
return;
|
|
}
|
|
}
|
|
|
|
// 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.
|
|
PDFViewerApplication._centerAtPos(previousScale, evt.clientX, evt.clientY);
|
|
} else {
|
|
setZoomDisabledTimeout();
|
|
}
|
|
}
|
|
|
|
function webViewerTouchStart(evt) {
|
|
if (
|
|
PDFViewerApplication.pdfViewer.isInPresentationMode ||
|
|
evt.touches.length < 2
|
|
) {
|
|
return;
|
|
}
|
|
evt.preventDefault();
|
|
|
|
if (evt.touches.length !== 2 || PDFViewerApplication.overlayManager.active) {
|
|
PDFViewerApplication._touchInfo = null;
|
|
return;
|
|
}
|
|
|
|
let [touch0, touch1] = evt.touches;
|
|
if (touch0.identifier > touch1.identifier) {
|
|
[touch0, touch1] = [touch1, touch0];
|
|
}
|
|
PDFViewerApplication._touchInfo = {
|
|
touch0X: touch0.pageX,
|
|
touch0Y: touch0.pageY,
|
|
touch1X: touch1.pageX,
|
|
touch1Y: touch1.pageY,
|
|
};
|
|
}
|
|
|
|
function webViewerTouchMove(evt) {
|
|
if (!PDFViewerApplication._touchInfo || evt.touches.length !== 2) {
|
|
return;
|
|
}
|
|
|
|
const { pdfViewer, _touchInfo, supportsPinchToZoom } = PDFViewerApplication;
|
|
let [touch0, touch1] = evt.touches;
|
|
if (touch0.identifier > touch1.identifier) {
|
|
[touch0, touch1] = [touch1, touch0];
|
|
}
|
|
const { pageX: page0X, pageY: page0Y } = touch0;
|
|
const { pageX: page1X, pageY: page1Y } = touch1;
|
|
const {
|
|
touch0X: pTouch0X,
|
|
touch0Y: pTouch0Y,
|
|
touch1X: pTouch1X,
|
|
touch1Y: pTouch1Y,
|
|
} = _touchInfo;
|
|
|
|
if (
|
|
Math.abs(pTouch0X - page0X) <= 1 &&
|
|
Math.abs(pTouch0Y - page0Y) <= 1 &&
|
|
Math.abs(pTouch1X - page1X) <= 1 &&
|
|
Math.abs(pTouch1Y - page1Y) <= 1
|
|
) {
|
|
// Touches are really too close and it's hard do some basic
|
|
// geometry in order to guess something.
|
|
return;
|
|
}
|
|
|
|
_touchInfo.touch0X = page0X;
|
|
_touchInfo.touch0Y = page0Y;
|
|
_touchInfo.touch1X = page1X;
|
|
_touchInfo.touch1Y = page1Y;
|
|
|
|
if (pTouch0X === page0X && pTouch0Y === page0Y) {
|
|
// First touch is fixed, if the vectors are collinear then we've a pinch.
|
|
const v1X = pTouch1X - page0X;
|
|
const v1Y = pTouch1Y - page0Y;
|
|
const v2X = page1X - page0X;
|
|
const v2Y = page1Y - page0Y;
|
|
const det = v1X * v2Y - v1Y * v2X;
|
|
// 0.02 is approximatively sin(0.15deg).
|
|
if (Math.abs(det) > 0.02 * Math.hypot(v1X, v1Y) * Math.hypot(v2X, v2Y)) {
|
|
return;
|
|
}
|
|
} else if (pTouch1X === page1X && pTouch1Y === page1Y) {
|
|
// Second touch is fixed, if the vectors are collinear then we've a pinch.
|
|
const v1X = pTouch0X - page1X;
|
|
const v1Y = pTouch0Y - page1Y;
|
|
const v2X = page0X - page1X;
|
|
const v2Y = page0Y - page1Y;
|
|
const det = v1X * v2Y - v1Y * v2X;
|
|
if (Math.abs(det) > 0.02 * Math.hypot(v1X, v1Y) * Math.hypot(v2X, v2Y)) {
|
|
return;
|
|
}
|
|
} else {
|
|
const diff0X = page0X - pTouch0X;
|
|
const diff1X = page1X - pTouch1X;
|
|
const diff0Y = page0Y - pTouch0Y;
|
|
const diff1Y = page1Y - pTouch1Y;
|
|
const dotProduct = diff0X * diff1X + diff0Y * diff1Y;
|
|
if (dotProduct >= 0) {
|
|
// The two touches go in almost the same direction.
|
|
return;
|
|
}
|
|
}
|
|
|
|
evt.preventDefault();
|
|
|
|
const distance = Math.hypot(page0X - page1X, page0Y - page1Y) || 1;
|
|
const pDistance = Math.hypot(pTouch0X - pTouch1X, pTouch0Y - pTouch1Y) || 1;
|
|
const previousScale = pdfViewer.currentScale;
|
|
if (supportsPinchToZoom) {
|
|
const newScaleFactor = PDFViewerApplication._accumulateFactor(
|
|
previousScale,
|
|
distance / pDistance,
|
|
"_touchUnusedFactor"
|
|
);
|
|
if (newScaleFactor < 1) {
|
|
PDFViewerApplication.zoomOut(null, newScaleFactor);
|
|
} else if (newScaleFactor > 1) {
|
|
PDFViewerApplication.zoomIn(null, newScaleFactor);
|
|
} else {
|
|
return;
|
|
}
|
|
} else {
|
|
const PIXELS_PER_LINE_SCALE = 30;
|
|
const ticks = PDFViewerApplication._accumulateTicks(
|
|
(distance - pDistance) / PIXELS_PER_LINE_SCALE,
|
|
"_touchUnusedTicks"
|
|
);
|
|
if (ticks < 0) {
|
|
PDFViewerApplication.zoomOut(-ticks);
|
|
} else if (ticks > 0) {
|
|
PDFViewerApplication.zoomIn(ticks);
|
|
} else {
|
|
return;
|
|
}
|
|
}
|
|
|
|
PDFViewerApplication._centerAtPos(
|
|
previousScale,
|
|
(page0X + page1X) / 2,
|
|
(page0Y + page1Y) / 2
|
|
);
|
|
}
|
|
|
|
function webViewerTouchEnd(evt) {
|
|
if (!PDFViewerApplication._touchInfo) {
|
|
return;
|
|
}
|
|
|
|
evt.preventDefault();
|
|
PDFViewerApplication._touchInfo = null;
|
|
PDFViewerApplication._touchUnusedTicks = 0;
|
|
PDFViewerApplication._touchUnusedFactor = 1;
|
|
}
|
|
|
|
function webViewerClick(evt) {
|
|
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) {
|
|
// evt.ctrlKey is false hence we use evt.key.
|
|
if (evt.key === "Control") {
|
|
PDFViewerApplication._isCtrlKeyDown = false;
|
|
}
|
|
}
|
|
|
|
function webViewerKeyDown(evt) {
|
|
PDFViewerApplication._isCtrlKeyDown = evt.key === "Control";
|
|
|
|
if (PDFViewerApplication.overlayManager.active) {
|
|
return;
|
|
}
|
|
const { eventBus, pdfViewer } = PDFViewerApplication;
|
|
const isViewerInPresentationMode = pdfViewer.isInPresentationMode;
|
|
|
|
let handled = false,
|
|
ensureViewerFocused = false;
|
|
const cmd =
|
|
(evt.ctrlKey ? 1 : 0) |
|
|
(evt.altKey ? 2 : 0) |
|
|
(evt.shiftKey ? 4 : 0) |
|
|
(evt.metaKey ? 8 : 0);
|
|
|
|
// 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 && !evt.shiftKey) {
|
|
PDFViewerApplication.findBar?.open();
|
|
handled = true;
|
|
}
|
|
break;
|
|
case 71: // g
|
|
if (!PDFViewerApplication.supportsIntegratedFind) {
|
|
const { state } = PDFViewerApplication.findController;
|
|
if (state) {
|
|
const newState = {
|
|
source: window,
|
|
type: "again",
|
|
findPrevious: cmd === 5 || cmd === 12,
|
|
};
|
|
eventBus.dispatch("find", { ...state, ...newState });
|
|
}
|
|
handled = true;
|
|
}
|
|
break;
|
|
case 61: // FF/Mac '='
|
|
case 107: // FF '+' and '='
|
|
case 187: // Chrome '+'
|
|
case 171: // FF with German keyboard
|
|
PDFViewerApplication.zoomIn();
|
|
handled = true;
|
|
break;
|
|
case 173: // FF/Mac '-'
|
|
case 109: // FF '-'
|
|
case 189: // Chrome '-'
|
|
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")) {
|
|
// 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;
|
|
PDFViewerApplication.externalServices.reportTelemetry({
|
|
type: "buttons",
|
|
data: { id: "presentationModeKeyboard" },
|
|
});
|
|
break;
|
|
case 71: // g
|
|
// focuses input#pageNumber field
|
|
if (PDFViewerApplication.appConfig.toolbar) {
|
|
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 = getActiveOrFocusedElement();
|
|
const curElementTagName = curElement?.tagName.toUpperCase();
|
|
if (
|
|
curElementTagName === "INPUT" ||
|
|
curElementTagName === "TEXTAREA" ||
|
|
curElementTagName === "SELECT" ||
|
|
(curElementTagName === "BUTTON" &&
|
|
(evt.keyCode === /* Enter = */ 13 || evt.keyCode === /* Space = */ 32)) ||
|
|
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) {
|
|
pdfViewer.nextPage();
|
|
} else {
|
|
pdfViewer.previousPage();
|
|
}
|
|
handled = true;
|
|
}
|
|
}
|
|
|
|
// shift-key
|
|
if (cmd === 4) {
|
|
switch (evt.keyCode) {
|
|
case 13: // enter key
|
|
case 32: // spacebar
|
|
if (
|
|
!isViewerInPresentationMode &&
|
|
pdfViewer.currentScaleValue !== "page-fit"
|
|
) {
|
|
break;
|
|
}
|
|
pdfViewer.previousPage();
|
|
|
|
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;
|
|
}
|
|
|
|
function webViewerAnnotationEditorStatesChanged(data) {
|
|
PDFViewerApplication.externalServices.updateEditorStates(data);
|
|
}
|
|
|
|
function webViewerReportTelemetry({ details }) {
|
|
PDFViewerApplication.externalServices.reportTelemetry(details);
|
|
}
|
|
|
|
/* Abstract factory for the print service. */
|
|
const PDFPrintServiceFactory = {
|
|
instance: {
|
|
supportsPrinting: false,
|
|
createPrintService() {
|
|
throw new Error("Not implemented: createPrintService");
|
|
},
|
|
},
|
|
};
|
|
|
|
export {
|
|
DefaultExternalServices,
|
|
PDFPrintServiceFactory,
|
|
PDFViewerApplication,
|
|
};
|