/* 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-dist'
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 }