fa8c0ef616
Looking at the code, I do have to agree with the point made in issue 12731 about it being unexpected/unhelpful that the `PDFFindController.executeCommand`-method isn't directly usable with the "find"-event. The reason for it being this way is, as so often, for historical reasons: The `executeCommand`-method was added (just) prior to the introduction of the `EventBus` in the viewer. Obviously we cannot simply change the existing `PDFFindController.executeCommand`-method, since that'd be a breaking change in code which has existed for over five years. Initially I figured that we could simply add a new method in `PDFFindController` that'd accept the state from the "find"-event, however after thinking about this and looking through the use-cases in the default viewer I settled on a slightly different approach: Let the `PDFFindController` just listen for the "find"-event (on the `EventBus`-instance) directly instead, which also removes one level of (unneeded) indirection during searching in the default viewer. For GENERIC builds of the PDF.js library, the old `PDFFindController.executeCommand`-method is still available with a deprecation warning.
102 lines
3.1 KiB
JavaScript
102 lines
3.1 KiB
JavaScript
/* Copyright 2014 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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"use strict";
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if (!pdfjsLib.getDocument || !pdfjsViewer.PDFSinglePageViewer) {
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// eslint-disable-next-line no-alert
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alert("Please build the pdfjs-dist library using\n `gulp dist-install`");
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}
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// The workerSrc property shall be specified.
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//
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pdfjsLib.GlobalWorkerOptions.workerSrc =
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"../../node_modules/pdfjs-dist/build/pdf.worker.js";
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// Some PDFs need external cmaps.
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//
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const CMAP_URL = "../../node_modules/pdfjs-dist/cmaps/";
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const CMAP_PACKED = true;
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const DEFAULT_URL = "../../web/compressed.tracemonkey-pldi-09.pdf";
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// To test the AcroForm and/or scripting functionality, try e.g. this file:
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// "../../test/pdfs/160F-2019.pdf"
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const ENABLE_XFA = true;
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const SEARCH_FOR = ""; // try "Mozilla";
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const SANDBOX_BUNDLE_SRC = "../../node_modules/pdfjs-dist/build/pdf.sandbox.js";
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const container = document.getElementById("viewerContainer");
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const eventBus = new pdfjsViewer.EventBus();
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// (Optionally) enable hyperlinks within PDF files.
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const pdfLinkService = new pdfjsViewer.PDFLinkService({
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eventBus,
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});
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// (Optionally) enable find controller.
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const pdfFindController = new pdfjsViewer.PDFFindController({
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eventBus,
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linkService: pdfLinkService,
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});
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// (Optionally) enable scripting support.
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const pdfScriptingManager = new pdfjsViewer.PDFScriptingManager({
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eventBus,
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sandboxBundleSrc: SANDBOX_BUNDLE_SRC,
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});
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const pdfSinglePageViewer = new pdfjsViewer.PDFSinglePageViewer({
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container,
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eventBus,
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linkService: pdfLinkService,
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findController: pdfFindController,
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scriptingManager: pdfScriptingManager,
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enableScripting: true, // Only necessary in PDF.js version 2.10.377 and below.
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});
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pdfLinkService.setViewer(pdfSinglePageViewer);
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pdfScriptingManager.setViewer(pdfSinglePageViewer);
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eventBus.on("pagesinit", function () {
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// We can use pdfSinglePageViewer now, e.g. let's change default scale.
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pdfSinglePageViewer.currentScaleValue = "page-width";
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// We can try searching for things.
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if (SEARCH_FOR) {
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if (!pdfFindController._onFind) {
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pdfFindController.executeCommand("find", { query: SEARCH_FOR });
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} else {
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eventBus.dispatch("find", { type: "", query: SEARCH_FOR });
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}
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}
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});
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// Loading document.
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const loadingTask = pdfjsLib.getDocument({
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url: DEFAULT_URL,
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cMapUrl: CMAP_URL,
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cMapPacked: CMAP_PACKED,
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enableXfa: ENABLE_XFA,
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});
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loadingTask.promise.then(function (pdfDocument) {
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// Document loaded, specifying document for the viewer and
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// the (optional) linkService.
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pdfSinglePageViewer.setDocument(pdfDocument);
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pdfLinkService.setDocument(pdfDocument, null);
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});
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