/*
---

name: Touch

description: Provides a custom touch event on mobile devices

authors: Christoph Pojer (@cpojer)

license: MIT-style license.

requires: [Core/Element.Event, Custom-Event/Element.defineCustomEvent, Browser.Features.Touch]

provides: Touch

...
*/

(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;
	}

});

})();