svgedit/dist/extensions/ext-xdomain-messaging.js

55 lines
1.9 KiB
JavaScript

(function () {
'use strict';
var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {
return typeof obj;
} : function (obj) {
return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
};
/**
* Should not be needed for same domain control (just call via child frame),
* but an API common for cross-domain and same domain use can be found
* in embedapi.js with a demo at embedapi.html
*/
svgEditor.addExtension('xdomain-messaging', function () {
var svgCanvas = svgEditor.canvas;
try {
window.addEventListener('message', function (e) {
// We accept and post strings for the sake of IE9 support
if (typeof e.data !== 'string' || e.data.charAt() === '|') {
return;
}
var data = JSON.parse(e.data);
if (!data || (typeof data === 'undefined' ? 'undefined' : _typeof(data)) !== 'object' || data.namespace !== 'svgCanvas') {
return;
}
// The default is not to allow any origins, including even the same domain or if run on a file:// URL
// See config-sample.js for an example of how to configure
var allowedOrigins = svgEditor.curConfig.allowedOrigins;
if (!allowedOrigins.includes('*') && !allowedOrigins.includes(e.origin)) {
return;
}
var cbid = data.id;
var name = data.name,
args = data.args;
var message = {
namespace: 'svg-edit',
id: cbid
};
try {
message.result = svgCanvas[name].apply(svgCanvas, args);
} catch (err) {
message.error = err.message;
}
e.source.postMessage(JSON.stringify(message), '*');
}, false);
} catch (err) {
console.log('Error with xdomain message listener: ' + err);
}
});
}());