126 lines
3.3 KiB
JavaScript
126 lines
3.3 KiB
JavaScript
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/* *
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*
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* (c) 2015-2024 Oystein Moseng
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*
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* License: www.highcharts.com/license
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*
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* !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
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*
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* Mixin for downloading content in the browser
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*
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* */
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'use strict';
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/* *
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*
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* Imports
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*
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* */
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import H from '../Core/Globals.js';
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const { isSafari, win, win: { document: doc } } = H;
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/* *
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*
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* Constants
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*
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* */
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const domurl = win.URL || win.webkitURL || win;
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/* *
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*
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* Functions
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*
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* */
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/**
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* Convert base64 dataURL to Blob if supported, otherwise returns undefined.
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* @private
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* @function Highcharts.dataURLtoBlob
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* @param {string} dataURL
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* URL to convert
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* @return {string|undefined}
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* Blob
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*/
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function dataURLtoBlob(dataURL) {
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const parts = dataURL
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.replace(/filename=.*;/, '')
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.match(/data:([^;]*)(;base64)?,([0-9A-Za-z+/]+)/);
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if (parts &&
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parts.length > 3 &&
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(win.atob) &&
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win.ArrayBuffer &&
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win.Uint8Array &&
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win.Blob &&
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(domurl.createObjectURL)) {
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// Try to convert data URL to Blob
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const binStr = win.atob(parts[3]), buf = new win.ArrayBuffer(binStr.length), binary = new win.Uint8Array(buf);
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for (let i = 0; i < binary.length; ++i) {
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binary[i] = binStr.charCodeAt(i);
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}
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return domurl
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.createObjectURL(new win.Blob([binary], { 'type': parts[1] }));
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}
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}
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/**
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* Download a data URL in the browser. Can also take a blob as first param.
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*
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* @private
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* @function Highcharts.downloadURL
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* @param {string|global.URL} dataURL
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* The dataURL/Blob to download
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* @param {string} filename
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* The name of the resulting file (w/extension)
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* @return {void}
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*/
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function downloadURL(dataURL, filename) {
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const nav = win.navigator, a = doc.createElement('a');
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// IE specific blob implementation
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// Don't use for normal dataURLs
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if (typeof dataURL !== 'string' &&
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!(dataURL instanceof String) &&
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nav.msSaveOrOpenBlob) {
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nav.msSaveOrOpenBlob(dataURL, filename);
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return;
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}
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dataURL = '' + dataURL;
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const // Some browsers have limitations for data URL lengths. Try to convert
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// to Blob or fall back. Edge always needs that blob.
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isOldEdgeBrowser = /Edge\/\d+/.test(nav.userAgent),
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// Safari on iOS needs Blob in order to download PDF
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safariBlob = (isSafari &&
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typeof dataURL === 'string' &&
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dataURL.indexOf('data:application/pdf') === 0);
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if (safariBlob || isOldEdgeBrowser || dataURL.length > 2000000) {
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dataURL = dataURLtoBlob(dataURL) || '';
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if (!dataURL) {
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throw new Error('Failed to convert to blob');
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}
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}
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// Try HTML5 download attr if supported
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if (typeof a.download !== 'undefined') {
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a.href = dataURL;
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a.download = filename; // HTML5 download attribute
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doc.body.appendChild(a);
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a.click();
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doc.body.removeChild(a);
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}
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else {
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// No download attr, just opening data URI
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try {
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if (!win.open(dataURL, 'chart')) {
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throw new Error('Failed to open window');
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}
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}
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catch {
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// If window.open failed, try location.href
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win.location.href = dataURL;
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}
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}
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}
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/* *
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*
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* Default Export
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*
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* */
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const DownloadURL = {
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dataURLtoBlob,
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downloadURL
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};
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export default DownloadURL;
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