/* ************************************************************************************* *\
 * The MIT License
 * Copyright (c) 2007 Fabio Zendhi Nagao - http://zend.lojcomm.com.br
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this
 * software and associated documentation files (the "Software"), to deal in the Software
 * without restriction, including without limitation the rights to use, copy, modify,
 * merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to the following
 * conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all copies
 * or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 * 
\* ************************************************************************************* */

var iCarousel = new Class({
	options: {
		animation: {
			type: "fadeNscroll",// fadeNscroll, scroll, fade
			direction: "left",// if type = scroll, set: top || left
			amount: 1,// if type = scroll, set the amount to scroll
			transition: Fx.Transitions.Cubic.easeInOut,
			duration: 500,
			rotate: {
				type: "manual",// auto || manual
				interval: 5000,// if type = auto, set the interval (ms)
				onMouseOver: "stop"// if type = auto, set the onmouseover behavior: stop || proceed
			}
		},

		item: {
			klass: "item",
			size: 100
		},

		idPrevious: "previous",
		idNext: "next",
		idToggle: "toggle",

		onClickPrevious: Class.empty,
		onClickNext: Class.empty,
		onPrevious: Class.empty,
		onNext: Class.empty,
		onGoTo: Class.empty
	},

	initialize: function(container, options) {
		this.setOptions(options);
		this.container = $(container);
		this.aItems = $A($$('.'+ this.options.item.klass));
		this.isMouseOver = false;
		if(this.options.idPrevious != "undefined" && $(this.options.idPrevious))
			$(this.options.idPrevious).addEvent("click", function(event) {
				new Event(event).stop();
				this._previous();
				this.fireEvent("onClickPrevious", this, 20);
			}.bind(this));// check if value is not "undefined" before start search the dom with $()
		if(this.options.idNext != "undefined" && $(this.options.idNext))
			$(this.options.idNext).addEvent("click", function(event) {
				new Event(event).stop();
				this._next();
				this.fireEvent("onClickNext", this, 20);
			}.bind(this));
		if(this.options.idToggle != "undefined" && $(this.options.idToggle))
			$(this.options.idToggle).addEvent("click", function(event) {new Event(event).stop(); this._toggle()}.bind(this));

		var oAn = this.options.animation; // short hand
		switch(this.options.animation.type.toLowerCase()) {
			case "fade":
				this.aItems.each(function(item) {
					item.fx = item.effect("opacity", {duration: oAn.duration, transition: oAn.transition});
					item.setStyle("opacity", 0);
					item.addEvents({
						"mouseenter": function() {
							this.isMouseOver = true;
							if(this.options.animation.rotate.type == "auto") this.timer = $clear(this.timer);
						}.bind(this),
						"mouseleave": function() {
							this.isMouseOver = false;
							if(this.options.animation.rotate.type == "auto") this.timer = this._autoRotate.periodical(this.options.animation.rotate.interval, this);
						}.bind(this)
					});
				}.bind(this));
				this.height = this.container.getStyle("height").toInt();
				this.atScreen = 0;
				this._animate(this.atScreen);
				break;

			default:
				(2).times(function() {
					this.aItems.each(function(item) {
						item.clone().injectInside(this.container);
					}.bind(this));
				}.bind(this));
				this.aItems = $A($$('.'+ this.options.item.klass));
				this.aItems.each(function(item) {
					//alert(item.id);
					divElements = item.getElements("img");
					divElements.each(function(itemx){
					itemx.addEvents({
						"click": function() {
							windowHeight = 0;
            				windowWidth = 0;
            				windowHeight = window.getScrollTop() + window.getHeight();
            				var space = 235;
            				var topy = windowHeight - space;
        
            				// create a new div with the width of the screen
            				var info_container = new Element('div', {
                				'styles': 
                				{
                    				'display': 'block',
                    				'visibility':'visible',
                    				'width': '100%',
                    				'height': space,
                    				'background':'#ffffff',
                    				'border-top': '1px solid #4E7158',
                    				'padding':'0px',
                    				'left':'0px',
                    				'margin':'0px',
                    				'position': 'absolute',
                    				'top': windowHeight + 'px',
                    				'z-index':'2000',
                    				'overflow':'hidden'
                				}
            				});
							info_container.setAttribute('id','info_container');
            				//add preload img
            				preload_image = new Element('img', {
                				'styles':
                				{
                    				'visibility': 'visible',
                    				'float':'left',
                    				'background': '#ffffff url(templates/css/ajax_loader.gif) center center no-repeat',
                    				'height': '50px',
                    				'width': '50px',
                    				'z-index': '100',
                    				'margin-top': '92px',
                    				'margin-left': '265px'
                				}           
            				});
            				preload_image.src="templates/img/spacer.gif";
            				// add overlay
            				winH = window.getScrollHeight();
            				winW = window.getScrollWidth();
            
            				var isIE = /MSIE (5.5|6.)/.test(navigator.userAgent);
            				if (isIE){
                				var overlayed = new Element('iframe', {
                    				'styles':
                    				{
                       					'width':winW,
                        				'height':winH,
                        				'position':'absolute',
                        				'background-color':'#000000',
                        				'visibility':'hidden',
                        				'top':'0px',
                        				'left':'0px',
                        				'z-index':'1500'
                       				}
                				});
            				}else{
                				var overlayed = new Element('div', {
                    				'styles':
                    				{
                        				'width':winW,
                        				'height':winH,
                        				'position':'absolute',
                        				'background-color':'#000000',
                        				'visibility':'hidden',
                        				'top':'0px',
                        				'left':'0px',
                        				'z-index':'1500'
                    
                   					 }
                				});
           					}
            				overlayed.setAttribute('id','overlayed');           
            				info_container.inject(document.body);
            				preload_image.inject(info_container);
            				//ajax load info content
            				var bounceIn = new Fx.Tween(info_container, {
                				'duration': 1700,
                				'transition': Fx.Transitions.Bounce.easeOut, 
                				'wait':true
            				});
            				var RequestInfo = new Request.HTML({
                				url: 'source/ajax/katalog_info.php',
                				method: 'get',
                				update: $('info_container')
                			//onComplete: bounceIn.start('top', windowHeight, topy)
            				});
            				RequestInfo.send('katalog_id='+itemx.alt);
            				bounceIn.start('top', windowHeight, topy);
            				overlayed.inject(document.body);
            				overlayed.tween('opacity', 0, 0.5);
						}.bind(this),
						"mouseenter": function() {
							itemx.tween("opacity",0.5);
							//this.isMouseOver = true;
							//if(this.options.animation.rotate.type == "auto") this.timer = $clear(this.timer);
						}.bind(this),
						"mouseleave": function() {
							itemx.tween("opacity",1.0);
							//this.isMouseOver = false;
							//if(this.options.animation.rotate.type == "auto") this.timer = this._autoRotate.periodical(this.options.animation.rotate.interval, this);
						}.bind(this)
						
					});
				})
				}.bind(this));
				//this.fx = this.container.effects({duration: oAn.duration, transition: oAn.transition, wait: false});
				this.fx = new Fx.Morph(this.container, {duration: oAn.duration, transition: oAn.transition, wait: false});
				this.atScreen = this.aItems.length / 3;
				this.container.setStyle(oAn.direction, - this.atScreen * this.options.item.size);
				break;
		}

		if(this.options.animation.rotate.type == "auto") this.timer = this._autoRotate.periodical(this.options.animation.rotate.interval, this);
	},

	goTo: function(n) {
		switch(this.options.animation.type.toLowerCase()) {
			case "fade":
				var lastIndex = this.atScreen;
				this.atScreen = Math.abs(n % (this.aItems.length / 3));
				this._animate(this.atScreen, lastIndex);
				break;

			default:
				this.atScreen = Math.abs(n % (this.aItems.length / 3));
				this.atScreen += this.aItems.length / 3;
				this._animate(this.atScreen);
				break;
		}

		this.fireEvent("onGoTo", this, 20);
	},

	_previous: function() {
		switch(this.options.animation.type.toLowerCase()) {
			case "fade":
				var lastIndex = this.atScreen;
				this.atScreen -= this.options.animation.amount;
				if(this.atScreen < 0) this.atScreen = (this.aItems.length - 1);
				this._animate(this.atScreen, lastIndex);
				break;

			default:
				this.atScreen -= this.options.animation.amount;
				if(this.atScreen < this.aItems.length / 3) {
					this.container.setStyle(this.options.animation.direction, - this.options.item.size * this.aItems.length * 2 / 3);
					this.atScreen = this.aItems.length * 2 / 3 - this.options.animation.amount;
				}
				this._animate(this.atScreen);
				break;
		}

		this.fireEvent("onPrevious", this, 20);
	},

	_next: function() {
		switch(this.options.animation.type.toLowerCase()) {
			case "fade":
				var lastIndex = this.atScreen;
				this.atScreen += this.options.animation.amount;
				if(this.atScreen >= this.aItems.length) this.atScreen = 0;
				this._animate(this.atScreen, lastIndex);
				break;

			default:
				this.atScreen += this.options.animation.amount;
				if(this.atScreen > this.aItems.length * 2 / 3) {
					this.container.setStyle(this.options.animation.direction, - this.options.item.size * this.aItems.length / 3);
					this.atScreen = this.aItems.length / 3 + this.options.animation.amount;
				}
				this._animate(this.atScreen);
				break;
		}

		this.fireEvent("onNext", this, 20);
	},

	_toggle: function() {
		(this.container.getStyle("height").toInt() == 0) ?
			this.container.effect("height", { duration:1000, transition: Fx.Transitions.Sine.easeInOut }).start(this.height):
			this.container.effect("height", { duration:1000, transition: Fx.Transitions.Sine.easeInOut }).start(0);
	},

	_autoRotate: function() {
		if(this.options.animation.rotate.onMouseOver == "stop" && !this.isMouseOver) this._next();
	},

	_animate: function(a, b) {
		switch(this.options.animation.type) {
			case "fade":
				if($defined(b)) {
					this.aItems[b].fx.start(0).chain(function() {
					this.aItems[a].fx.start(1);}.bind(this));
				} else {
					this.aItems[a].fx.start(1);
				}
				break;

			case "scroll":
				var that = this;
				if(that.options.animation.direction == "top") {
					that.fx.start({"top" : - a * that.options.item.size});
				} else {
					that.fx.start({"left" : - a * that.options.item.size});
				}
				break;

			case "fadeNscroll":
				var that = this;
				if(that.options.animation.direction == "top") {
					that.fx.start({"opacity":0.75}).chain(function() {
						that.fx.start({"top" : - a * that.options.item.size}).chain(function() {
							that.fx.start({"opacity": 1});
						});
					});
				} else {
					that.fx.start({"opacity":0.75}).chain(function() {
						that.fx.start({"left" : - a * that.options.item.size}).chain(function() {
							that.fx.start({"opacity": 1});
						});
					});
				}
				break;
		}
	}
});
iCarousel.implement(new Events); // Implements addEvent(type, fn), fireEvent(type, [args], delay) and removeEvent(type, fn)
iCarousel.implement(new Options);// Implements setOptions(defaults, options)