18e0b10d3c
With the changes in previous patches, the `disableCreateObjectURL` option/functionality is no longer used for anything in the API and/or in the Worker code. Note however that there's some functionality, mainly related to file loading/downloading, in the GENERIC version of the default viewer which still depends on this option. Hence the `disableCreateObjectURL` option (and related compatibility code) is moved into the viewer, see e.g. `web/app_options.js`, such that it's still available in the default viewer.
95 lines
2.8 KiB
JavaScript
95 lines
2.8 KiB
JavaScript
/* Copyright 2013 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 { createObjectURL, createValidAbsoluteUrl } from "pdfjs-lib";
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import { viewerCompatibilityParams } from "./viewer_compatibility.js";
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if (typeof PDFJSDev !== "undefined" && !PDFJSDev.test("CHROME || GENERIC")) {
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throw new Error(
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'Module "pdfjs-web/download_manager" shall not be used ' +
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"outside CHROME and GENERIC builds."
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);
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}
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const DISABLE_CREATE_OBJECT_URL =
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viewerCompatibilityParams.disableCreateObjectURL || false;
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function download(blobUrl, filename) {
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const a = document.createElement("a");
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if (!a.click) {
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throw new Error('DownloadManager: "a.click()" is not supported.');
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}
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a.href = blobUrl;
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a.target = "_parent";
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// Use a.download if available. This increases the likelihood that
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// the file is downloaded instead of opened by another PDF plugin.
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if ("download" in a) {
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a.download = filename;
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}
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// <a> must be in the document for IE and recent Firefox versions,
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// otherwise .click() is ignored.
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(document.body || document.documentElement).appendChild(a);
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a.click();
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a.remove();
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}
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class DownloadManager {
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constructor({ disableCreateObjectURL = DISABLE_CREATE_OBJECT_URL }) {
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this.disableCreateObjectURL = disableCreateObjectURL;
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}
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downloadUrl(url, filename) {
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if (!createValidAbsoluteUrl(url, "http://example.com")) {
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return; // restricted/invalid URL
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}
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download(url + "#pdfjs.action=download", filename);
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}
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downloadData(data, filename, contentType) {
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if (navigator.msSaveBlob) {
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// IE10 and above
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navigator.msSaveBlob(new Blob([data], { type: contentType }), filename);
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return;
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}
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const blobUrl = createObjectURL(
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data,
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contentType,
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this.disableCreateObjectURL
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);
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download(blobUrl, filename);
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}
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download(blob, url, filename) {
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if (navigator.msSaveBlob) {
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// IE10 / IE11
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if (!navigator.msSaveBlob(blob, filename)) {
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this.downloadUrl(url, filename);
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}
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return;
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}
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if (this.disableCreateObjectURL) {
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// URL.createObjectURL is not supported
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this.downloadUrl(url, filename);
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return;
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}
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const blobUrl = URL.createObjectURL(blob);
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download(blobUrl, filename);
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}
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}
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export { DownloadManager };
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