gristlabs_grist-core/app/client/lib/download.js

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const G = require('../lib/browserGlobals').get('document');
const dom = require('../lib/dom');
/**
* Note about testing
* It is difficult to test file downloads as Selenuim and javascript do not provide
* an easy way to control native dialogs.
* One approach would be to configure the test browser to automatically start the download and
* save the file in a specific place. Then check that the file exists at that location.
* Firefox documentation: http://kb.mozillazine.org/File_types_and_download_actions
* Approach detailed here in java: https://www.seleniumeasy.com/selenium-tutorials/verify-file-after-downloading-using-webdriver-java
*/
let _download = null;
/**
* Trigger a download on the file at the given url.
* @param {String} href: The url of the download.
*/
function download(href) {
if (!_download) {
_download = dom('a', {
style: 'position: absolute; top: 0; display: none',
download: ''
});
G.document.body.appendChild(_download);
}
_download.setAttribute('href', href);
_download.click();
}
module.exports = download;