forked from qwerty/tupali
93 lines
3.0 KiB
JavaScript
93 lines
3.0 KiB
JavaScript
/* *
|
|
*
|
|
* (c) 2015-2020 Oystein Moseng
|
|
*
|
|
* License: www.highcharts.com/license
|
|
*
|
|
* !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
|
|
*
|
|
* Mixin for downloading content in the browser
|
|
*
|
|
* */
|
|
'use strict';
|
|
import Highcharts from '../parts/Globals.js';
|
|
var win = Highcharts.win, nav = win.navigator, doc = win.document, domurl = win.URL || win.webkitURL || win, isEdgeBrowser = /Edge\/\d+/.test(nav.userAgent);
|
|
/**
|
|
* Convert base64 dataURL to Blob if supported, otherwise returns undefined.
|
|
* @private
|
|
* @function Highcharts.dataURLtoBlob
|
|
* @param {string} dataURL
|
|
* URL to convert
|
|
* @return {string|undefined}
|
|
* Blob
|
|
*/
|
|
Highcharts.dataURLtoBlob = function (dataURL) {
|
|
var parts = dataURL.match(/data:([^;]*)(;base64)?,([0-9A-Za-z+/]+)/);
|
|
if (parts &&
|
|
parts.length > 3 &&
|
|
win.atob &&
|
|
win.ArrayBuffer &&
|
|
win.Uint8Array &&
|
|
win.Blob &&
|
|
domurl.createObjectURL) {
|
|
// Try to convert data URL to Blob
|
|
var binStr = win.atob(parts[3]), buf = new win.ArrayBuffer(binStr.length), binary = new win.Uint8Array(buf), blob;
|
|
for (var i = 0; i < binary.length; ++i) {
|
|
binary[i] = binStr.charCodeAt(i);
|
|
}
|
|
blob = new win.Blob([binary], { 'type': parts[1] });
|
|
return domurl.createObjectURL(blob);
|
|
}
|
|
};
|
|
/**
|
|
* Download a data URL in the browser. Can also take a blob as first param.
|
|
*
|
|
* @private
|
|
* @function Highcharts.downloadURL
|
|
* @param {string|global.URL} dataURL
|
|
* The dataURL/Blob to download
|
|
* @param {string} filename
|
|
* The name of the resulting file (w/extension)
|
|
* @return {void}
|
|
*/
|
|
Highcharts.downloadURL = function (dataURL, filename) {
|
|
var a = doc.createElement('a'), windowRef;
|
|
// IE specific blob implementation
|
|
// Don't use for normal dataURLs
|
|
if (typeof dataURL !== 'string' &&
|
|
!(dataURL instanceof String) &&
|
|
nav.msSaveOrOpenBlob) {
|
|
nav.msSaveOrOpenBlob(dataURL, filename);
|
|
return;
|
|
}
|
|
// Some browsers have limitations for data URL lengths. Try to convert to
|
|
// Blob or fall back. Edge always needs that blob.
|
|
if (isEdgeBrowser || dataURL.length > 2000000) {
|
|
dataURL = Highcharts.dataURLtoBlob(dataURL);
|
|
if (!dataURL) {
|
|
throw new Error('Failed to convert to blob');
|
|
}
|
|
}
|
|
// Try HTML5 download attr if supported
|
|
if (typeof a.download !== 'undefined') {
|
|
a.href = dataURL;
|
|
a.download = filename; // HTML5 download attribute
|
|
doc.body.appendChild(a);
|
|
a.click();
|
|
doc.body.removeChild(a);
|
|
}
|
|
else {
|
|
// No download attr, just opening data URI
|
|
try {
|
|
windowRef = win.open(dataURL, 'chart');
|
|
if (typeof windowRef === 'undefined' || windowRef === null) {
|
|
throw new Error('Failed to open window');
|
|
}
|
|
}
|
|
catch (e) {
|
|
// window.open failed, trying location.href
|
|
win.location.href = dataURL;
|
|
}
|
|
}
|
|
};
|