﻿function initSlide(playID, playTextID, imgListID, cssHover, cssCommon, funcTemp, funcInterval, playName) {
    var cssPlayText = { "position": "relative", "height": "20px",  "zIndex": "10002" }; //文本位置
    var cssPlayTextUL = {  "height": "24px", "display": "block", "filter": "Alpha(Opacity=80)", "opacity": "0.8" }; //文本位置的Ul
    var cssPlayTextUlLi = { "float": "left", "display": "block", "textAlign": "center", "margin": "1px", "cursor": "pointer" }; //文本位置的Li
    var cssPlayListA = { "display": "block", "position": "absolute", "overflow": "hidden" }; //图像超链接
    playName.currentIndex = 0;
    playName.count = $("#" + imgListID + " a").size();
    var playHeight = $("#" + playID).height(); //播放位置的高度
    var playWidth = $("#" + playID).width(); //播放位置的宽度

    cssPlayText.marginTop = playHeight - (cssCommon.width.replace("px", "")*1)-8;  //对播放数字的位置进行设置
    
    cssPlayText.marginLeft = playWidth - playName.count * (cssCommon.width.replace("px", "") * 1 + 4) - 7; //对播放数字的位置进行设置	
    $("#" + imgListID + " img").css({ "height": playHeight, "width": playWidth }); //强制设置图片高度和宽度
    $("#" + imgListID + " a").css(cssPlayListA);
    $("#" + playID + " a:not(:first-child)").hide();
    var playText = $("<ul></ul>").css(cssPlayTextUL);

    for (var i = 1; i <= playName.count; i++) {
        var temp = $("<li>" + i + "</li>").css(cssPlayTextUlLi).click(function() {
            var j = $(this).text() - 1;
            playName.currentIndex = j;

            if (j >= playName.count) return;
            $("#" + imgListID + " a").filter(":visible").fadeOut(500).parent().children().eq(j).fadeIn(1000);
            $(this).css(cssHover).siblings().css(cssCommon)
        });
        if (i == 1) {
            temp.css(cssHover);
        }
        else {
            temp.css(cssCommon);
        }
        playText.append(temp);
    }
    $("#" + playID).append($("#" + playTextID).append(playText).css(cssPlayText));
    funcTemp = setInterval(funcInterval, 4000);
    $("#" + playID + "").hover(function() { clearInterval(funcTemp) }, function() { funcTemp = setInterval(funcInterval, 4000); });

}


var Tween = {
	Quart: {
		easeOut: function(t,b,c,d){
			return -c * ((t=t/d-1)*t*t*t - 1) + b;
		}
	},
	Back: {
		easeOut: function(t,b,c,d,s){
			if (s == undefined) s = 1.70158;
			return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
		}
	},
	Bounce: {
		easeOut: function(t,b,c,d){
			if ((t/=d) < (1/2.75)) {
				return c*(7.5625*t*t) + b;
			} else if (t < (2/2.75)) {
				return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
			} else if (t < (2.5/2.75)) {
				return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
			} else {
				return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
			}
		}
	}
}

var currentSlide;
//容器对象,滑动对象,切换数量
var SlideTrans = function(container, slider, count, options) {
	currentSlide=this;
	this._slider = $("#"+slider);	
	this._container = $("#"+container);//容器对象	
	this._timer = null;//定时器
	this._count = Math.abs(count);//切换数量
	this._target = 0;//目标值
	this._t = this._b = this._c = 0;//tween参数	
	this.Index = 0;//当前索引	
	this.SetOptions(options);	
	this.Auto = !!this.options.Auto;
	this.Duration = Math.abs(this.options.Duration);
	this.Time = Math.abs(this.options.Time);
	this.Pause = Math.abs(this.options.Pause);
	this.Tween = this.options.Tween;
	
	this.onFinish = this.options.onFinish;	
	var bVertical = !!this.options.Vertical;
	this._css = bVertical ? "top" : "left";//方向
	if(!bVertical)this._slider.width(this._container.width()*this._count);
	//样式设置
	var p = this._container.css('position');
	p == "relative" || p == "absolute" || (this._container.css("position", "relative"));
	this._container.css('overflow' , "hidden");
	this._slider.css('position' , "absolute");
	this.Change = this.options.Change ? this.options.Change :
		this._slider.attr(bVertical ? "offsetHeight" : "offsetWidth") / this._count;
		
	
	this._cssPlayText = { "position": "relative", "height": "20px",  "zIndex": "10002" }; //文本位置
    this._cssPlayTextUL = {  "height": "24px", "display": "block", "filter": "Alpha(Opacity=80)", "opacity": "0.8" }; //文本位置的Ul
    this._cssPlayTextUlLi = { "float": "right", "display": "block", "textAlign": "center", "margin": "1px", "cursor": "pointer" }; //文本位置的Li
	this._cssHover = { "background": "#74A8ED", "lineHeight": "18px", "fontWeight": "700", "color": "#FFF", "marginTop": "0px", "height": "18px", "width": "18px", "fontSize": "14px", "border": "1px solid #EEEEEE","marginRight":"3px"};
    this._cssCommon = { "background": "#FFF", "lineHeight": "16px", "fontWeight": "100", "color": "#74A8ED", "marginTop": "1px", "border": "1px solid #74A8ED", "height": "16px", "width": "18px", "fontSize": "12px" ,"marginRight":"3px"};
	
	
	
		this.Init();
};
SlideTrans.prototype = {
  //设置默认属性
  SetOptions: function(options) {
	this.options = {//默认值
		Vertical:	true,//是否垂直方向（方向不能改）
		Auto:		true,//是否自动
		Change:		0,//改变量
		Duration:	50,//滑动持续时间
		Time:		10,//滑动延时
		Pause:		2000,//停顿时间(Auto为true时有效)
		
		onFinish:	function(){},//完成转换时执行
		Tween:		Tween.Quart.easeOut//tween算子
	};
	Extend(this.options, options || {});
  },
  onStart:function()
  {
	 
	  	$.each($("#divText li"),function(i){
								var t=$(this).html()-1;
							t==currentSlide.Index?$(this).css(currentSlide._cssHover):$(this).css(currentSlide._cssCommon);			 
										 
										 });
	  },
  Init:function(){
	  	var playText = $("<ul></ul>").css(this._cssPlayTextUL);
	
		this._cssPlayText.top = this._container.height() - (this._cssCommon.width.replace("px", "")*1)-8;  //对播放数字的位置进行设置
		
		
		
		for (var i = this._count; i >=1 ; i--) {
			
			var temp = $("<li>" + i + "</li>").css(this._cssPlayTextUlLi).hover(function() {
				var j = $(this).text() - 1;
				currentSlide.Auto=false;
				currentSlide.Stop();
				currentSlide.Run(j);
				$(this).css(currentSlide._cssHover);
			},function() {
				var j = $(this).text() - 1;
				currentSlide.Auto=true;
				currentSlide.Run();
			});
			temp.css(this._cssCommon);
			playText.append(temp);
			
		}
		this._container.append($("<div id='divText'></div>").append(playText).css(this._cssPlayText));
		
		
		
	},
  //开始切换
  Run: function(index) {
	 
	//修正index
	index == undefined && (index = this.Index);
	
	index < 0 && (index = this._count - 1) || index >= this._count && (index = 0);
	//设置参数

	this._target = -Math.abs(this.Change) * (this.Index = index);
	this._t = 0;
	
	this._b = parseInt(this._slider.css(this.options.Vertical ? "top" : "left"));
	this._c = this._target - this._b;
	
	this.onStart();
	this.Move();
  },
 
  //移动
  Move: function() {
	clearTimeout(this._timer);
	//未到达目标继续移动否则进行下一次滑动
	if (this._c && this._t < this.Duration) {
			
		this.MoveTo(Math.round(this.Tween(this._t++, this._b, this._c, this.Duration)));
		this._timer = setTimeout(Bind(this, this.Move), this.Time);
	}else{
		
		this.MoveTo(this._target);
		this.Auto && (this._timer = setTimeout(Bind(this, this.Next), this.Pause));
	}
  },
  //移动到
  MoveTo: function(i) {
	  
	this._slider.css(this._css, i + "px");
	
  },
  //下一个
  Next: function() {
	this.Run(++this.Index);
  },
  //上一个
  Previous: function() {
	this.Run(--this.Index);
  },
  //停止
  Stop: function() {
	clearTimeout(this._timer); this.MoveTo(this._target);
  }
};
var Bind = function(object, fun) {
	var args = Array.prototype.slice.call(arguments).slice(2);
	return function() {
		return fun.apply(object, args.concat(Array.prototype.slice.call(arguments)));
	}
}


var Extend = function(destination, source) {
	for (var property in source) {
		destination[property] = source[property];
	}
	return destination;
}