// page init
$(function(){
	initSlideShow();
})

// slideshow init
function initSlideShow() {
	$('div.slideshow').fadeGallery({
		slideElements:'ul.slideset > li',
		pauseOnHover:false,
		autoRotation:true,
		autoHeight:false,
		switchTime:2500,
		duration:1500
	});
}

// slideshow plugin
jQuery.fn.fadeGallery = function(_options){
	var _options = jQuery.extend({
		slideElements:'div.slideset > div',
		pagerLinks:'div.pager a',
		btnNext:'a.next',
		btnPrev:'a.prev',
		btnPlayPause:'a.play-pause',
		btnPlay:'a.play',
		btnPause:'a.pause',
		pausedClass:'paused',
		disabledClass: 'disabled',
		playClass:'playing',
		activeClass:'active',
		currentNum:false,
		allNum:false,
		startSlide:null,
		noCircle:false,
		pauseOnHover:true,
		autoRotation:false,
		autoHeight:false,
		onChange:false,
		switchTime:3000,
		duration:650,
		event:'click'
	},_options);

	return this.each(function(){
		// gallery options
		var _this = jQuery(this);
		var _slides = jQuery(_options.slideElements, _this);
		var _pagerLinks = jQuery(_options.pagerLinks, _this);
		var _btnPrev = jQuery(_options.btnPrev, _this);
		var _btnNext = jQuery(_options.btnNext, _this);
		var _btnPlayPause = jQuery(_options.btnPlayPause, _this);
		var _btnPause = jQuery(_options.btnPause, _this);
		var _btnPlay = jQuery(_options.btnPlay, _this);
		var _pauseOnHover = _options.pauseOnHover;
		var _autoRotation = _options.autoRotation;
		var _activeClass = _options.activeClass;
		var _disabledClass = _options.disabledClass;
		var _pausedClass = _options.pausedClass;
		var _playClass = _options.playClass;
		var _autoHeight = _options.autoHeight;
		var _duration = _options.duration;
		var _switchTime = _options.switchTime;
		var _controlEvent = _options.event;
		var _currentNum = (_options.currentNum ? jQuery(_options.currentNum, _this) : false);
		var _allNum = (_options.allNum ? jQuery(_options.allNum, _this) : false);
		var _startSlide = _options.startSlide;
		var _noCycle = _options.noCircle;
		var _onChange = _options.onChange;

		// gallery init
		var _hover = false;
		var _prevIndex = 0;
		var _currentIndex = 0;
		var _slideCount = _slides.length;
		var _timer;
		if(_slideCount < 2) return;

		_prevIndex = _slides.index(_slides.filter('.'+_activeClass));
		if(_prevIndex < 0) _prevIndex = _currentIndex = 0;
		else _currentIndex = _prevIndex;
		if(_startSlide != null) {
			if(_startSlide == 'random') _prevIndex = _currentIndex = Math.floor(Math.random()*_slideCount);
			else _prevIndex = _currentIndex = parseInt(_startSlide);
		}
		_slides.hide().eq(_currentIndex).show();
		if(_autoRotation) _this.removeClass(_pausedClass).addClass(_playClass);
		else _this.removeClass(_playClass).addClass(_pausedClass);

		// gallery control
		if(_btnPrev.length) {
			_btnPrev.bind(_controlEvent,function(){
				prevSlide();
				return false;
			});
		}
		if(_btnNext.length) {
			_btnNext.bind(_controlEvent,function(){
				nextSlide();
				return false;
			});
		}
		if(_pagerLinks.length) {
			_pagerLinks.each(function(_ind){
				jQuery(this).bind(_controlEvent,function(){
					if(_currentIndex != _ind) {
						_prevIndex = _currentIndex;
						_currentIndex = _ind;
						switchSlide();
					}
					return false;
				});
			});
		}

		// play pause section
		if(_btnPlayPause.length) {
			_btnPlayPause.bind(_controlEvent,function(){
				if(_this.hasClass(_pausedClass)) {
					_this.removeClass(_pausedClass).addClass(_playClass);
					_autoRotation = true;
					autoSlide();
				} else {
					_autoRotation = false;
					if(_timer) clearTimeout(_timer);
					_this.removeClass(_playClass).addClass(_pausedClass);
				}
				return false;
			});
		}
		if(_btnPlay.length) {
			_btnPlay.bind(_controlEvent,function(){
				_this.removeClass(_pausedClass).addClass(_playClass);
				_autoRotation = true;
				autoSlide();
				return false;
			});
		}
		if(_btnPause.length) {
			_btnPause.bind(_controlEvent,function(){
				_autoRotation = false;
				if(_timer) clearTimeout(_timer);
				_this.removeClass(_playClass).addClass(_pausedClass);
				return false;
			});
		}

		// gallery animation
		function prevSlide() {
			_prevIndex = _currentIndex;
			if(_currentIndex > 0) _currentIndex--;
			else {
				if(_noCycle) return;
				else _currentIndex = _slideCount-1;
			}
			switchSlide();
		}
		function nextSlide() {
			_prevIndex = _currentIndex;
			if(_currentIndex < _slideCount-1) _currentIndex++;
			else {
				if(_noCycle) return;
				else _currentIndex = 0;
			}
			switchSlide();
		}
		function refreshStatus() {
			if(_pagerLinks.length) _pagerLinks.removeClass(_activeClass).eq(_currentIndex).addClass(_activeClass);
			if(_currentNum) _currentNum.text(_currentIndex+1);
			if(_allNum) _allNum.text(_slideCount);
			_slides.eq(_prevIndex).removeClass(_activeClass);
			_slides.eq(_currentIndex).addClass(_activeClass);
			if(_noCycle) {
				if(_btnPrev.length) {
					if(_currentIndex == 0) _btnPrev.addClass(_disabledClass);
					else _btnPrev.removeClass(_disabledClass);
				}
				if(_btnNext.length) {
					if(_currentIndex == _slideCount-1) _btnNext.addClass(_disabledClass);
					else _btnNext.removeClass(_disabledClass);
				}
			}
			if(typeof _onChange === 'function') {
				_onChange(_this, _currentIndex);
			}
		}
		function switchSlide() {
			_slides.eq(_prevIndex).fadeOut(_duration);
			_slides.eq(_currentIndex).fadeIn(_duration);
			if(_autoHeight) _slides.eq(_currentIndex).parent().animate({height:_slides.eq(_currentIndex).outerHeight(true)},{duration:_duration,queue:false});
			refreshStatus();
			autoSlide();
		}

		// autoslide function
		function autoSlide() {
			if(!_autoRotation || _hover) return;
			if(_timer) clearTimeout(_timer);
			_timer = setTimeout(nextSlide,_switchTime+_duration);
		}
		if(_pauseOnHover) {
			_this.hover(function(){
				_hover = true;
				if(_timer) clearTimeout(_timer);
			},function(){
				_hover = false;
				autoSlide();
			});
		}
		refreshStatus();
		autoSlide();
	});
}

$(function(){
	var g1 = new initGallery(jQuery('.carousel'),{
		list: '.frame ul',
		autoRotation: 10000,
		effect: 'fade'
	});
});
function initGallery(context, options){this.init(context, options)}
(function( $ ){
	initGallery.prototype = {
		autoRotation: false,
		disableBtn: false,
		list: 'ul.g1',
		switcher: false,
		prev: false,
		next: false,
		effect: false,
		event:'click',
		onStart: function(){},
		onSelect: function(){},
		onChange: function(){},
		stopOnHover: true,
		activeSlide: 0,
		
		init: function(context, options){
			for ( var i in options ) this[i] = options[i]; 
			this.holder = $(context);
			if(this.holder == undefined) return;
			
			this.list = this.holder.find(this.list);
			this.animation = true, this.active = 0;
			this.prevActive = this.active, this.wait;
			this.count = this.list.children().length,
			this.w = this.list.children().eq(0).outerWidth();
			this.holdW = this.list.parent().width();
			this.visEl = Math.ceil(this.holdW/this.w);
			
			var ind = this.list.children().index(this.list.children().filter('.active'));
			if(ind != -1) this.active = ind;
			
			if(this.count <= this.visEl) this.animation = false;
			
			if(this.effect == 'fade') this.list.children().css('opacity', 0).eq(this.active).css('opacity', 1).addClass('active');
			else if(this.effect == 'slide') this.list.css('marginLeft', -this.w*this.active);

			this.initControls(this);
			
			this.toggleState.listItem(this);
			if(this.switcher) this.toggleState.switchItem(this);
			
			this.onStart(this.list, this.active);
			
			if(this.autoRotation && this.animation) this.runTimer(this);
		},
		initControls: function(_this){
			if(_this.prev && _this.next){
				_this.prev = _this.holder.find(_this.prev).attr('rel', 'prev').click(function(e){
					_this.refreshState(e);
					return false;
				});
				_this.next = _this.holder.find(_this.next).attr('rel', 'next').click(function(e){
					_this.refreshState(e);
					return false;
				});
			}
			if(_this.switcher){
				_this.switcher = _this.holder.find(_this.switcher);
				_this.toggleState.switchItem(_this);
				_this.switcher.bind(_this.event, function(){
					var ind = _this.switcher.index($(this))
					_this.refreshState(ind);
					return false;
				});
			}
			if(this.disableBtn) this.disabledConrtol();
		},
		toggleState:{
			listItem: function(_this){
				_this.list.children().eq(_this.prevActive).removeClass('active');
				_this.list.children().eq(_this.active).addClass('active');
			},
			switchItem: function(_this){
				_this.switcher.eq(_this.prevActive).removeClass('active');
				_this.switcher.eq(_this.active).addClass('active');
			}
		},
		disabledConrtol: function(){
			if(this.active == 0) {
				this.prev.parent().addClass('disabled');
				this.next.parent().removeClass('disabled');
			}
			else if(this.active == this.count-1 && this.active + this.visEl == this.count) {
				this.prev.parent().removeClass('disabled');
				this.next.parent().addClass('disabled');
				this.autoRotation = false;
			}
			else {
				this.prev.parent().removeClass('disabled');
				this.next.parent().removeClass('disabled');
			}
		},
		runTimer: function(_this){
			this.wait = setTimeout(function(){_this.refreshState('next')}, this.autoRotation)
		},
		stop: function(){
			if(this.wait) clearTimeout(this.wait)
		},
		play: function(){
			if(this.wait) clearTimeout(this.wait);
			if(this.autoRotation) this.runTimer(this);
		},
		changeSlide:{
			fade:function(_this){
				_this.list.children().eq(_this.prevActive).animate({opacity:0}, {queue:false, duration:700});
				_this.list.children().eq(_this.active).animate({opacity:1}, {queue:false, duration:700, complete:function(){
					_this.play();
					_this.onChange(_this.list, _this.active);
				}});
			},
			slide:function(_this){
				if(_this.active + _this.visEl > _this.count) _this.active = 0;
				_this.onSelect(_this.list, _this.active);
				_this.list.animate({marginLeft:-_this.w*_this.active}, {queue:false, duration:700, complete:function(){
					_this.play();
					_this.onChange(_this.list, _this.active);
				}});
			}
		},
		refreshState: function(e){
			if(this.animation){
				this.prevActive = this.active;
				if(typeof e == 'string' && e == 'next') this.active++;
				else if(typeof e == 'number') this.active=e;
				else{
					if(e.target.rel == 'next') this.active++;
					else if(e.target.rel == 'prev') this.active--;
				}
				if(this.wait) clearTimeout(this.wait);
				if(this.active == this.count) this.active = 0;
				else if(this.active == -1) this.active=this.count - 1;
				
				this.toggleState.listItem(this);
				if(this.switcher) this.toggleState.switchItem(this);
				
				if(this.disableBtn) this.disabledConrtol();
				
				if(this.effect == 'fade') this.changeSlide.fade(this);
				else if(this.effect == 'slide') this.changeSlide.slide(this);
			}
		}	
	}
})( jQuery );