8023175103
Related to https://bugzilla.mozilla.org/show_bug.cgi?id=1659753 This allows Firefox trigger a "save" event from ctrl/cmd+s or the "Save Page As" context menu, which in turn lets pdf.js generate a new PDF if there is form data to save. I also now use `sourceEventType` on downloads so Firefox can determine if it should launch the "open with" dialog or "save as" dialog.
94 lines
2.9 KiB
JavaScript
94 lines
2.9 KiB
JavaScript
/* Copyright 2013 Mozilla Foundation
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
import { createObjectURL, createValidAbsoluteUrl } from "pdfjs-lib";
|
|
import { viewerCompatibilityParams } from "./viewer_compatibility.js";
|
|
|
|
if (typeof PDFJSDev !== "undefined" && !PDFJSDev.test("CHROME || GENERIC")) {
|
|
throw new Error(
|
|
'Module "pdfjs-web/download_manager" shall not be used ' +
|
|
"outside CHROME and GENERIC builds."
|
|
);
|
|
}
|
|
|
|
function download(blobUrl, filename) {
|
|
const a = document.createElement("a");
|
|
if (!a.click) {
|
|
throw new Error('DownloadManager: "a.click()" is not supported.');
|
|
}
|
|
a.href = blobUrl;
|
|
a.target = "_parent";
|
|
// Use a.download if available. This increases the likelihood that
|
|
// the file is downloaded instead of opened by another PDF plugin.
|
|
if ("download" in a) {
|
|
a.download = filename;
|
|
}
|
|
// <a> must be in the document for IE and recent Firefox versions,
|
|
// otherwise .click() is ignored.
|
|
(document.body || document.documentElement).appendChild(a);
|
|
a.click();
|
|
a.remove();
|
|
}
|
|
|
|
class DownloadManager {
|
|
downloadUrl(url, filename) {
|
|
if (!createValidAbsoluteUrl(url, "http://example.com")) {
|
|
return; // restricted/invalid URL
|
|
}
|
|
download(url + "#pdfjs.action=download", filename);
|
|
}
|
|
|
|
downloadData(data, filename, contentType) {
|
|
if (navigator.msSaveBlob) {
|
|
// IE10 and above
|
|
navigator.msSaveBlob(new Blob([data], { type: contentType }), filename);
|
|
return;
|
|
}
|
|
const blobUrl = createObjectURL(
|
|
data,
|
|
contentType,
|
|
viewerCompatibilityParams.disableCreateObjectURL
|
|
);
|
|
download(blobUrl, filename);
|
|
}
|
|
|
|
/**
|
|
* @param sourceEventType {string} Used to signal what triggered the download.
|
|
* The version of PDF.js integrated with Firefox uses this to to determine
|
|
* which dialog to show. "save" triggers "save as" and "download" triggers
|
|
* the "open with" dialog.
|
|
*/
|
|
download(blob, url, filename, sourceEventType = "download") {
|
|
if (navigator.msSaveBlob) {
|
|
// IE10 / IE11
|
|
if (!navigator.msSaveBlob(blob, filename)) {
|
|
this.downloadUrl(url, filename);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (viewerCompatibilityParams.disableCreateObjectURL) {
|
|
// URL.createObjectURL is not supported
|
|
this.downloadUrl(url, filename);
|
|
return;
|
|
}
|
|
|
|
const blobUrl = URL.createObjectURL(blob);
|
|
download(blobUrl, filename);
|
|
}
|
|
}
|
|
|
|
export { DownloadManager };
|