775d45b36a
Note how the `onerror` functionality is not being used in the GENERIC `DownloadManager`, since we have no way of knowing if downloading succeeded. Hence this functionality is only *possibly* useful in MOZCENTRAL builds, however as outlined in the existing comments it's unlikely to be helpful in practice. Generally speaking, if downloading failed once in [`PdfStreamConverter.jsm`](https://searchfox.org/mozilla-central/rev/809ac3660845fef6faf18ec210232fdadc0f1ad9/toolkit/components/pdfjs/content/PdfStreamConverter.jsm#294-406) it seems very likely that it would fail again; all-in-all I'm thus suggesting that we just remove the `onerror` functionality altogether here.
80 lines
2.6 KiB
JavaScript
80 lines
2.6 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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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 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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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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const blobUrl = createObjectURL(
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data,
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contentType,
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viewerCompatibilityParams.disableCreateObjectURL
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);
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download(blobUrl, filename);
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}
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/**
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* @param sourceEventType {string} Used to signal what triggered the download.
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* The version of PDF.js integrated with Firefox uses this to to determine
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* which dialog to show. "save" triggers "save as" and "download" triggers
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* the "open with" dialog.
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*/
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download(blob, url, filename, sourceEventType = "download") {
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if (viewerCompatibilityParams.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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