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libtdevnc/webclients/novnc/core/util/polyfill.js

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/*
* noVNC: HTML5 VNC client
* Copyright 2017 Pierre Ossman for noVNC
* Licensed under MPL 2.0 or any later version (see LICENSE.txt)
*/
/* Polyfills to provide new APIs in old browsers */
/* Object.assign() (taken from MDN) */
if (typeof Object.assign != 'function') {
// Must be writable: true, enumerable: false, configurable: true
Object.defineProperty(Object, "assign", {
value: function assign(target, varArgs) { // .length of function is 2
'use strict';
if (target == null) { // TypeError if undefined or null
throw new TypeError('Cannot convert undefined or null to object');
}
var to = Object(target);
for (var index = 1; index < arguments.length; index++) {
var nextSource = arguments[index];
if (nextSource != null) { // Skip over if undefined or null
for (var nextKey in nextSource) {
// Avoid bugs when hasOwnProperty is shadowed
if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) {
to[nextKey] = nextSource[nextKey];
}
}
}
}
return to;
},
writable: true,
configurable: true
});
}
/* CustomEvent constructor (taken from MDN) */
(function () {
function CustomEvent ( event, params ) {
params = params || { bubbles: false, cancelable: false, detail: undefined };
var evt = document.createEvent( 'CustomEvent' );
evt.initCustomEvent( event, params.bubbles, params.cancelable, params.detail );
return evt;
}
CustomEvent.prototype = window.Event.prototype;
if (typeof window.CustomEvent !== "function") {
window.CustomEvent = CustomEvent;
}
})();