461 lines
12 KiB
JavaScript
461 lines
12 KiB
JavaScript
/* Copyright 2018 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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const compatibilityParams = Object.create(null);
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if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
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if (
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typeof PDFJSDev !== "undefined" &&
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PDFJSDev.test("LIB") &&
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typeof navigator === "undefined"
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) {
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globalThis.navigator = Object.create(null);
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}
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const userAgent = navigator.userAgent || "";
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const platform = navigator.platform || "";
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const maxTouchPoints = navigator.maxTouchPoints || 1;
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const isAndroid = /Android/.test(userAgent);
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const isIOS =
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/\b(iPad|iPhone|iPod)(?=;)/.test(userAgent) ||
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(platform === "MacIntel" && maxTouchPoints > 1);
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// Limit canvas size to 5 mega-pixels on mobile.
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// Support: Android, iOS
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(function checkCanvasSizeLimitation() {
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if (isIOS || isAndroid) {
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compatibilityParams.maxCanvasPixels = 5242880;
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}
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})();
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}
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const OptionKind = {
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BROWSER: 0x01,
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VIEWER: 0x02,
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API: 0x04,
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WORKER: 0x08,
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PREFERENCE: 0x80,
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};
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/**
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* NOTE: These options are used to generate the `default_preferences.json` file,
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* see `OptionKind.PREFERENCE`, hence the values below must use only
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* primitive types and cannot rely on any imported types.
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*/
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const defaultOptions = {
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canvasMaxAreaInBytes: {
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/** @type {number} */
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value: -1,
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kind: OptionKind.BROWSER + OptionKind.API,
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},
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isInAutomation: {
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/** @type {boolean} */
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value: false,
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kind: OptionKind.BROWSER,
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},
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supportsDocumentFonts: {
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/** @type {boolean} */
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value: true,
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kind: OptionKind.BROWSER,
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},
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supportsIntegratedFind: {
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/** @type {boolean} */
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value: false,
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kind: OptionKind.BROWSER,
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},
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supportsMouseWheelZoomCtrlKey: {
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/** @type {boolean} */
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value: true,
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kind: OptionKind.BROWSER,
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},
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supportsMouseWheelZoomMetaKey: {
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/** @type {boolean} */
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value: true,
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kind: OptionKind.BROWSER,
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},
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supportsPinchToZoom: {
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/** @type {boolean} */
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value: true,
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kind: OptionKind.BROWSER,
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},
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annotationEditorMode: {
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/** @type {number} */
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value: 0,
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kind: OptionKind.VIEWER + OptionKind.PREFERENCE,
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},
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annotationMode: {
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/** @type {number} */
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value: 2,
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kind: OptionKind.VIEWER + OptionKind.PREFERENCE,
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},
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cursorToolOnLoad: {
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/** @type {number} */
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value: 0,
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kind: OptionKind.VIEWER + OptionKind.PREFERENCE,
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},
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defaultZoomDelay: {
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/** @type {number} */
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value: 400,
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kind: OptionKind.VIEWER + OptionKind.PREFERENCE,
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},
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defaultZoomValue: {
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/** @type {string} */
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value: "",
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kind: OptionKind.VIEWER + OptionKind.PREFERENCE,
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},
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disableHistory: {
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/** @type {boolean} */
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value: false,
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kind: OptionKind.VIEWER,
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},
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disablePageLabels: {
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/** @type {boolean} */
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value: false,
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kind: OptionKind.VIEWER + OptionKind.PREFERENCE,
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},
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enablePermissions: {
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/** @type {boolean} */
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value: false,
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kind: OptionKind.VIEWER + OptionKind.PREFERENCE,
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},
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enablePrintAutoRotate: {
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/** @type {boolean} */
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value: true,
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kind: OptionKind.VIEWER + OptionKind.PREFERENCE,
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},
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enableScripting: {
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/** @type {boolean} */
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value: typeof PDFJSDev === "undefined" || !PDFJSDev.test("CHROME"),
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kind: OptionKind.VIEWER + OptionKind.PREFERENCE,
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},
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externalLinkRel: {
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/** @type {string} */
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value: "noopener noreferrer nofollow",
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kind: OptionKind.VIEWER,
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},
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externalLinkTarget: {
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/** @type {number} */
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value: 0,
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kind: OptionKind.VIEWER + OptionKind.PREFERENCE,
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},
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historyUpdateUrl: {
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/** @type {boolean} */
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value: false,
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kind: OptionKind.VIEWER + OptionKind.PREFERENCE,
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},
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ignoreDestinationZoom: {
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/** @type {boolean} */
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value: false,
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kind: OptionKind.VIEWER + OptionKind.PREFERENCE,
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},
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imageResourcesPath: {
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/** @type {string} */
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value:
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typeof PDFJSDev !== "undefined" && PDFJSDev.test("MOZCENTRAL")
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? "resource://pdf.js/web/images/"
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: "./images/",
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kind: OptionKind.VIEWER,
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},
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maxCanvasPixels: {
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/** @type {number} */
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value: 16777216,
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kind: OptionKind.VIEWER,
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},
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forcePageColors: {
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/** @type {boolean} */
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value: false,
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kind: OptionKind.VIEWER + OptionKind.PREFERENCE,
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},
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pageColorsBackground: {
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/** @type {string} */
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value: "Canvas",
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kind: OptionKind.VIEWER + OptionKind.PREFERENCE,
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},
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pageColorsForeground: {
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/** @type {string} */
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value: "CanvasText",
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kind: OptionKind.VIEWER + OptionKind.PREFERENCE,
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},
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pdfBugEnabled: {
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/** @type {boolean} */
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value: typeof PDFJSDev === "undefined",
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kind: OptionKind.VIEWER + OptionKind.PREFERENCE,
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},
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printResolution: {
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/** @type {number} */
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value: 150,
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kind: OptionKind.VIEWER,
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},
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sidebarViewOnLoad: {
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/** @type {number} */
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value: -1,
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kind: OptionKind.VIEWER + OptionKind.PREFERENCE,
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},
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scrollModeOnLoad: {
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/** @type {number} */
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value: -1,
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kind: OptionKind.VIEWER + OptionKind.PREFERENCE,
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},
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spreadModeOnLoad: {
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/** @type {number} */
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value: -1,
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kind: OptionKind.VIEWER + OptionKind.PREFERENCE,
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},
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textLayerMode: {
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/** @type {number} */
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value: 1,
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kind: OptionKind.VIEWER + OptionKind.PREFERENCE,
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},
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viewOnLoad: {
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/** @type {boolean} */
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value: 0,
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kind: OptionKind.VIEWER + OptionKind.PREFERENCE,
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},
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cMapPacked: {
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/** @type {boolean} */
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value: true,
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kind: OptionKind.API,
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},
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cMapUrl: {
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/** @type {string} */
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value:
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// eslint-disable-next-line no-nested-ternary
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typeof PDFJSDev === "undefined"
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? "../external/bcmaps/"
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: PDFJSDev.test("MOZCENTRAL")
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? "resource://pdf.js/web/cmaps/"
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: "../web/cmaps/",
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kind: OptionKind.API,
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},
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disableAutoFetch: {
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/** @type {boolean} */
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value: false,
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kind: OptionKind.API + OptionKind.PREFERENCE,
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},
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disableFontFace: {
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/** @type {boolean} */
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value: false,
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kind: OptionKind.API + OptionKind.PREFERENCE,
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},
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disableRange: {
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/** @type {boolean} */
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value: false,
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kind: OptionKind.API + OptionKind.PREFERENCE,
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},
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disableStream: {
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/** @type {boolean} */
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value: false,
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kind: OptionKind.API + OptionKind.PREFERENCE,
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},
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docBaseUrl: {
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/** @type {string} */
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value: "",
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kind: OptionKind.API,
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},
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enableXfa: {
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/** @type {boolean} */
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value: true,
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kind: OptionKind.API + OptionKind.PREFERENCE,
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},
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fontExtraProperties: {
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/** @type {boolean} */
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value: false,
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kind: OptionKind.API,
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},
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isEvalSupported: {
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/** @type {boolean} */
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value: true,
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kind: OptionKind.API,
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},
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isOffscreenCanvasSupported: {
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/** @type {boolean} */
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value: true,
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kind: OptionKind.API,
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},
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maxImageSize: {
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/** @type {number} */
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value: -1,
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kind: OptionKind.API,
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},
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pdfBug: {
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/** @type {boolean} */
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value: false,
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kind: OptionKind.API,
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},
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standardFontDataUrl: {
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/** @type {string} */
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value:
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// eslint-disable-next-line no-nested-ternary
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typeof PDFJSDev === "undefined"
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? "../external/standard_fonts/"
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: PDFJSDev.test("MOZCENTRAL")
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? "resource://pdf.js/web/standard_fonts/"
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: "../web/standard_fonts/",
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kind: OptionKind.API,
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},
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verbosity: {
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/** @type {number} */
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value: 1,
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kind: OptionKind.API,
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},
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workerPort: {
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/** @type {Object} */
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value: null,
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kind: OptionKind.WORKER,
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},
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workerSrc: {
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/** @type {string} */
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value:
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// eslint-disable-next-line no-nested-ternary
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typeof PDFJSDev === "undefined"
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? "../src/pdf.worker.js"
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: PDFJSDev.test("MOZCENTRAL")
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? "resource://pdf.js/build/pdf.worker.mjs"
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: "../build/pdf.worker.mjs",
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kind: OptionKind.WORKER,
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},
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};
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if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
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defaultOptions.defaultUrl = {
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/** @type {string} */
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value: "compressed.tracemonkey-pldi-09.pdf",
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kind: OptionKind.VIEWER,
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};
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defaultOptions.disablePreferences = {
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/** @type {boolean} */
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value: typeof PDFJSDev !== "undefined" && PDFJSDev.test("TESTING"),
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kind: OptionKind.VIEWER,
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};
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defaultOptions.locale = {
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/** @type {string} */
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value: navigator.language || "en-US",
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kind: OptionKind.VIEWER,
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};
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defaultOptions.sandboxBundleSrc = {
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/** @type {string} */
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value:
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typeof PDFJSDev === "undefined"
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? "../build/dev-sandbox/pdf.sandbox.mjs"
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: "../build/pdf.sandbox.mjs",
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kind: OptionKind.VIEWER,
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};
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} else if (PDFJSDev.test("CHROME")) {
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defaultOptions.defaultUrl = {
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/** @type {string} */
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value: "",
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kind: OptionKind.VIEWER,
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};
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defaultOptions.disableTelemetry = {
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/** @type {boolean} */
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value: false,
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kind: OptionKind.VIEWER + OptionKind.PREFERENCE,
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};
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defaultOptions.sandboxBundleSrc = {
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/** @type {string} */
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value: "../build/pdf.sandbox.js",
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kind: OptionKind.VIEWER,
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};
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}
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const userOptions = Object.create(null);
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class AppOptions {
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constructor() {
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throw new Error("Cannot initialize AppOptions.");
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}
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static get(name) {
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const userOption = userOptions[name];
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if (userOption !== undefined) {
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return userOption;
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}
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const defaultOption = defaultOptions[name];
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if (defaultOption !== undefined) {
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return compatibilityParams[name] ?? defaultOption.value;
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}
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return undefined;
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}
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static getAll(kind = null) {
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const options = Object.create(null);
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for (const name in defaultOptions) {
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const defaultOption = defaultOptions[name];
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if (kind) {
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if (!(kind & defaultOption.kind)) {
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continue;
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}
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if (
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(typeof PDFJSDev === "undefined" || PDFJSDev.test("LIB")) &&
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kind === OptionKind.PREFERENCE
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) {
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if (defaultOption.kind & OptionKind.BROWSER) {
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throw new Error(`Invalid kind for preference: ${name}`);
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}
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const value = defaultOption.value,
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valueType = typeof value;
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if (
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valueType === "boolean" ||
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valueType === "string" ||
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(valueType === "number" && Number.isInteger(value))
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) {
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options[name] = value;
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continue;
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}
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throw new Error(`Invalid type for preference: ${name}`);
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}
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}
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const userOption = userOptions[name];
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options[name] =
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userOption !== undefined
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? userOption
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: compatibilityParams[name] ?? defaultOption.value;
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}
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return options;
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}
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static set(name, value) {
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userOptions[name] = value;
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}
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static setAll(options, init = false) {
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if ((typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) && init) {
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if (this.get("disablePreferences")) {
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// Give custom implementations of the default viewer a simpler way to
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// opt-out of having the `Preferences` override existing `AppOptions`.
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return;
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}
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if (Object.keys(userOptions).length) {
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console.warn(
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"setAll: The Preferences may override manually set AppOptions; " +
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'please use the "disablePreferences"-option in order to prevent that.'
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);
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}
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}
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for (const name in options) {
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userOptions[name] = options[name];
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}
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}
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static remove(name) {
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delete userOptions[name];
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}
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}
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export { AppOptions, compatibilityParams, OptionKind };
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