4fc64ceb76
The download button in pdf.js doesn't work in iOS Chrome.
- It appears to be an issue with URLs from URL.createObjectURL.
The URL is correct, but iOS Chrome won't even load the URL
when `a.click()` is called in `download_manager.js`. Even
if you manually visit the URL, you get a blank page.
- Fix this by detecting iOS Chrome and disabling createObjectURL.
The `download_manager.js` `download` method wasn't checking
`PDFJS.disableCreateObjectURL`, so check it there, too.
- Move the navigator.msSaveBlob check earlier, so that
this doesn't change IE10 / IE11 behavior.
- Remove the !URL check since pdf.js has a URL polyfill
now.
111 lines
4.0 KiB
JavaScript
111 lines
4.0 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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'use strict';
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(function (root, factory) {
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if (typeof define === 'function' && define.amd) {
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define('pdfjs-web/download_manager', ['exports', 'pdfjs-web/pdfjs'],
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factory);
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} else if (typeof exports !== 'undefined') {
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factory(exports, require('./pdfjs.js'));
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} else {
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factory((root.pdfjsWebDownloadManager = {}), root.pdfjsWebPDFJS);
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}
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}(this, function (exports, pdfjsLib) {
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if (typeof PDFJSDev === 'undefined' || PDFJSDev.test('GENERIC || CHROME')) {
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// eslint-disable-next-line no-inner-declarations
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function download(blobUrl, filename) {
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var a = document.createElement('a');
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if (a.click) {
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// Use a.click() if available. Otherwise, Chrome might show
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// "Unsafe JavaScript attempt to initiate a navigation change
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// for frame with URL" and not open the PDF at all.
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// Supported by (not mentioned = untested):
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// - Firefox 6 - 19 (4- does not support a.click, 5 ignores a.click)
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// - Chrome 19 - 26 (18- does not support a.click)
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// - Opera 9 - 12.15
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// - Internet Explorer 6 - 10
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// - Safari 6 (5.1- does not support a.click)
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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.parentNode.removeChild(a);
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} else {
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if (window.top === window &&
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blobUrl.split('#')[0] === window.location.href.split('#')[0]) {
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// If _parent == self, then opening an identical URL with different
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// location hash will only cause a navigation, not a download.
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var padCharacter = blobUrl.indexOf('?') === -1 ? '?' : '&';
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blobUrl = blobUrl.replace(/#|$/, padCharacter + '$&');
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}
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window.open(blobUrl, '_parent');
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}
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}
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function DownloadManager() {} // eslint-disable-line no-inner-declarations
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DownloadManager.prototype = {
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downloadUrl: function DownloadManager_downloadUrl(url, filename) {
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if (!pdfjsLib.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: function DownloadManager_downloadData(data, filename,
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contentType) {
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if (navigator.msSaveBlob) { // IE10 and above
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return navigator.msSaveBlob(new Blob([data], { type: contentType }),
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filename);
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}
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var blobUrl = pdfjsLib.createObjectURL(data, contentType,
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pdfjsLib.PDFJS.disableCreateObjectURL);
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download(blobUrl, filename);
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},
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download: function DownloadManager_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 (pdfjsLib.PDFJS.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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var blobUrl = URL.createObjectURL(blob);
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download(blobUrl, filename);
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}
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};
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exports.DownloadManager = DownloadManager;
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}
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}));
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