phantomjs-polyfills.js

/**
 * Polyfill for requestAnimationFrame
 * http://paulirish.com/2011/requestanimationframe-for-smart-animating/
 * http://my.opera.com/emoller/blog/2011/12/20/requestanimationframe-for-smart-er-animating
 * requestAnimationFrame polyfill by Erik Möller. fixes from Paul Irish and Tino Zijdel
 * MIT license
 */
(function() {
	var lastTime = 0;
	var vendors = ['ms', 'moz', 'webkit', 'o'];
	for(var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) {
		window.requestAnimationFrame = window[vendors[x] + 'RequestAnimationFrame'];
		window.cancelAnimationFrame = window[vendors[x] + 'CancelAnimationFrame']
			|| window[vendors[x] + 'CancelRequestAnimationFrame'];
	}
	if(!window.requestAnimationFrame)
		window.requestAnimationFrame = function(callback, element) {
			var currTime = new Date().getTime();
			var timeToCall = Math.max(0, 16 - (currTime - lastTime));
			var id = window.setTimeout(function() {
					callback(currTime + timeToCall);
				},
				timeToCall);
			lastTime = currTime + timeToCall;
			return id;
		};
	if(!window.cancelAnimationFrame)
		window.cancelAnimationFrame = function(id) {
			clearTimeout(id);
		};
}());

/**
 * Polyfill for bind
 * Until PhantomJS > 1.9.7 is out (see https://github.com/ariya/phantomjs/issues/10522)
 * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/bind
 */
(function() {
	if(!Function.prototype.bind) {
		Function.prototype.bind = function(oThis) {
			if(typeof this !== "function") {
				// closest thing possible to the ECMAScript 5
				// internal IsCallable function
				throw new TypeError("Function.prototype.bind - what is trying to be bound is not callable");
			}

			var aArgs = Array.prototype.slice.call(arguments, 1),
				fToBind = this,
				fNOP = function() {
				},
				fBound = function() {
					return fToBind.apply(this instanceof fNOP && oThis
						? this
						: oThis,
						aArgs.concat(Array.prototype.slice.call(arguments)));
				};

			fNOP.prototype = this.prototype;
			fBound.prototype = new fNOP();

			return fBound;
		};
	}
})();

/*
 * Polyfill for CustomEvent
 * Until PhantomJS v2.0 is out (see https://github.com/ariya/phantomjs/issues/11289)
 */
(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;

	window.CustomEvent = CustomEvent;
})();