tv_xiaoyouxi/games/shit/js/touch.js

(function(){

[Element, Window, Document].invoke('implement', {hasEvent: function(event){
	var events = this.retrieve('events'),
		list = (events && events[event]) ? events[event].values : null;
	if (list){
		for (var i = list.length; i--;) if (i in list){
			return true;
		}
	}
	return false;
}});

var wrap = function(custom, method, extended, name){
	method = custom[method];
	extended = custom[extended];

	return function(fn, customName){
		if (!customName) customName = name;

		if (extended && !this.hasEvent(customName)) extended.call(this, fn, customName);
		if (method) method.call(this, fn, customName);
	};
};

var inherit = function(custom, base, method, name){
	return function(fn, customName){
		base[method].call(this, fn, customName || name);
		custom[method].call(this, fn, customName || name);
	};
};

var events = Element.Events;

Element.defineCustomEvent = function(name, custom){

	var base = events[custom.base];

	custom.onAdd = wrap(custom, 'onAdd', 'onSetup', name);
	custom.onRemove = wrap(custom, 'onRemove', 'onTeardown', name);

	events[name] = base ? Object.append({}, custom, {

		base: base.base,

		condition: function(event){
			return (!base.condition || base.condition.call(this, event)) &&
				(!custom.condition || custom.condition.call(this, event));
		},

		onAdd: inherit(custom, base, 'onAdd', name),
		onRemove: inherit(custom, base, 'onRemove', name)

	}) : custom;

	return this;

};

var loop = function(name){
	var method = 'on' + name.capitalize();
	Element[name + 'CustomEvents'] = function(){
		Object.each(events, function(event, name){
			if (event[method]) event[method].call(event, name);
		});
	};
	return loop;
};

loop('enable')('disable');

})();

(function(){

Browser.Device = {
	name: 'other'
};

if (Browser.Platform.ios){
	var device = navigator.userAgent.toLowerCase().match(/(ip(ad|od|hone))/)[0];
	
	Browser.Device[device] = true;
	Browser.Device.name = device;
}

if (this.devicePixelRatio == 2)
	Browser.hasHighResolution = true;

Browser.isMobile = !['mac', 'linux', 'win'].contains(Browser.Platform.name);

}).call(this);

Browser.Features.Touch = (function(){
	try {
		document.createEvent('TouchEvent').initTouchEvent('touchstart');
		return true;
	} catch (exception){}
	
	return false;
})();

// Android doesn't have a touch delay and dispatchEvent does not fire the handler
Browser.Features.iOSTouch = (function(){
	var name = 'cantouch', // Name does not matter
		html = document.html,
		hasTouch = false;

	if (!html.addEventListener) return false;

	var handler = function(){
		html.removeEventListener(name, handler, true);
		hasTouch = true;
	};

	try {
		html.addEventListener(name, handler, true);
		var event = document.createEvent('TouchEvent');
		event.initTouchEvent(name);
		html.dispatchEvent(event);
		return hasTouch;
	} catch (exception){}

	handler(); // Remove listener
	return false;
})();


(function(){

var preventDefault = function(event){
	if (!event.target || event.target.tagName.toLowerCase() != 'select')
		event.preventDefault();
};

var disabled;

Element.defineCustomEvent('touch', {

	base: 'touchend',

	condition: function(event){
		if (disabled || event.targetTouches.length != 0) return false;

		var touch = event.changedTouches[0],
			target = document.elementFromPoint(touch.clientX, touch.clientY);

		do {
			if (target == this) return true;
		} while (target && (target = target.parentNode));

		return false;
	},

	onSetup: function(){
		this.addEvent('touchstart', preventDefault);
	},

	onTeardown: function(){
		this.removeEvent('touchstart', preventDefault);
	},

	onEnable: function(){
		disabled = false;
	},

	onDisable: function(){
		disabled = true;
	}

});

})();

if (Browser.Features.iOSTouch) (function(){

var name = 'click';
delete Element.NativeEvents[name];

Element.defineCustomEvent(name, {

	base: 'touch'

});

})();