/**************************************************************

	Script	: Image Menu for prototype & script.aculo.us
	Version	: 0.1
	Authors	: Bernhard Reiter, Samuel Birch
	Desc	: Based upon Samuel Birch's Image Menu 2.2
	Licence	: Open Source MIT Licence
	Ack	: to user ilyak on #prototype for helping

**************************************************************/

var ImageMenu = Class.create({

	getOptions: function(){
		return {
			onOpen: false,
			onClose: Class.empty,
			openWidth: 200,
			transition: Effect.Transitions.linear, // TODO: quadOut ?
			duration: 400,
			open: null,
			border: 0
		};
	},

	initialize: function(elements, options){
		this.options = {};
		if (options.onOpen)	this.options.onOpen = options.onOpen;
		if (options.onClose)	this.options.onClose = options.onClose;
		if (options.openWidth)	this.options.openWidth = options.openWidth;
		if (options.transition) this.options.transition = options.transition;
		if (options.duration)	this.options.duration = options.duration;
		if (options.open)	this.options.open = options.open;
		if (options.border)	this.options.border = options.border;

		//this.setOptions(this.getOptions(), options);
		this.options.duration = this.options.duration / 1000; // seconds, as opposed to mootols' milliseconds

		this.elements = elements;
		this.widths = {};
		this.widths.closed = this.elements[0].getStyle('width'); //.toInt();
		this.widths.openSelected = this.options.openWidth;
		this.widths.openOthers = Math.round(((this.widths.closed*this.elements.length) - (this.widths.openSelected+this.options.border)) / (this.elements.length-1));

		//this.fx = new Fx.Elements(this.elements, {wait: false, duration: this.options.duration, transition: this.options.transition});

		this.elements.each(function(el,i){
			el.observe('mouseover', function(e){
				e.stop();
				alert(i);
				this.reset(i);

			}.bind(this));

			el.observe('mouseout', function(e){
				e.stop();
				this.reset(this.options.open);

			}.bind(this));

			var obj = this;

			el.observe('click', function(e){

				if(obj.options.onOpen){
					new Event(e).stop();
					if(obj.options.open == i){
						obj.options.open = null;
						obj.options.onClose(this.href, i);
					}else{
						obj.options.open = i;
						obj.options.onOpen(this.href, i);
					}


				}

			})

		}.bind(this));

		if(this.options.open){
			if(Object.isNumber(this.options.open)){
				this.reset(this.options.open);
			}else{
				this.elements.each(function(el,i){
					if(el.id == this.options.open){
						this.reset(i);
					}
				},this);
			}
		}

	},

	reset: function(num){
		if(Object.isNumber(num)){
			var width = this.widths.openOthers;
			if(num+1 == this.elements.length){
				width += this.options.border;
			}
		}else{
			var width = this.widths.closed;
		}

		var obj = {};
		this.elements.each(function(el,i){
			var w = width;
			if(i == this.elements.length-1){
				w = width+5
			}
			obj[i] = {'width': w};
		}.bind(this));

		if(Object.isNumber(num)){
			obj[num] = {'width': this.widths.openSelected};
		}

		//this.fx.start(obj);
		this.elements.each(function(el,i){
			new Effect.Morph(el, {style: {width: obj[i]+'px'}, duration: this.options.duration
							, transition: this.options.transition });
		}.bind(this));
	}

});

/*************************************************************/