/**
 * @fileOverview
 * the script for edu.baidu.com
 * @author hi:lovexctk <zhangwei11@baidu.com>
 * @version 2012-3-9
 */


;(function ($) {
    /**
     *@fileOverview 焦点图
     *@ops 
     *@example 
        $("#box").slider({
            pic
            selected
            btn//按钮集合ul
            time
        })
     */
    
    $.fn.slider = function(ops){
        var defaults={
            pic:"",
            txt:"",
            btn:"",
            time:5000,
            selected:"cur"
        };
        var op = $.extend(defaults,ops);
        var $this = $(this);
        var len = $this.find("."+op.pic).length;
        
        if(len <= 1){
            return false;
        }
        
        var _invoke = function (num){
            var $piCur = $this.find("."+op.pic+":eq("+num +")");
            var $btnCur = $this.find("."+op.btn+":eq("+num +")");
            
            $piCur.siblings().hide();
            $btnCur.addClass(op.selected);
            $btnCur.siblings().removeClass(op.selected);
            $this.find("."+op.pic+":eq("+num +")").fadeIn("slow");
            
            if (op.txt) {
                var $txtCur = $this.find("."+op.txt+":eq("+num +")");
                $txtCur.siblings().hide();
                $this.find("."+op.txt+":eq("+num +")").fadeIn("slow");
            }
        };
        _invoke(0);
        
        var curIndex = 0;
        var auto = function(){
            return setInterval(function(){
            curIndex ++;
            _invoke(curIndex);
            if(curIndex > len-1) {
                curIndex = -1;
            }
        }, op.time);}
        
        var autoNum = auto();
        
        $this.find("."+op.btn).parent().on("click", "li", function (){
            window.clearInterval(autoNum);
            _invoke($(this).index());
            curIndex = $(this).index();
            autoNum = auto();
        });
    };
    
    
    /**
     *@fileOverview 标签切换
     *@example 
        $("#tabBox").tab({
            "btns": ,
            "conts": 
        })
     */
    $.fn.tab = function(ops){
        var defaults = {
            "index": 0,
            "btns":"",
            "conts":"",
            "tabcurClass":""
        };
        var op = $.extend(defaults, ops);
        var $this = $(this);
        
        var index = op.index;
        var btns = $this.find(op.btns);
        var contents = $this.find(op.conts);
        var tabClass = op.tabcurClass;
        var currIndex = index;
        var $btnParent = btns.parent();
        
        btns.eq(index).addClass(tabClass).siblings().removeClass(tabClass);
        contents.eq(index).show().siblings().hide();
        
        $btnParent.on("click","li",function(){
            var nIndex = $(this).index();
            
            $btnParent.find("li").eq(currIndex).removeClass(tabClass);
            $(this).addClass(tabClass);
            contents.eq(currIndex).hide();
            contents.eq(nIndex).show();
            currIndex = nIndex;
        });
    };
    
    /**
     *@fileOverview 标签切换动画
     *@example 
        $("#tabBox").tabAnim({
            "index": 0,
            "btns":  "",
            "conts":  "",
            "btnCurClass": ""
        })
     */
    $.fn.tabAnim = function(ops){
        var defaults = {
            "index": 0,
            "btns": "",
            "conts": "",
            "btnCurClass": "cur"
        };
        var op = $.extend(defaults, ops);
        var $this = $(this);
        
        var index = op.index;
        var btns = $this.find(op.btns);
        var contents = $this.find(op.conts);
        var tabClass = op.btnCurClass;
        var currIndex = index;
        var $btnParent = btns.parent();
        var $parentCont = contents.parent();
        var $contWrap = $parentCont.parent();
        
        var arr = [];
        $.each(contents, function(){
            arr.push($(this));
        });
        
        $contWrap.css({
            "position": "relative",
            "height": $contWrap.height() + 20 + "px",
            "overflow": "hidden"
        });
        $parentCont.css({"position": "absolute"});
        
        btns.eq(index).addClass(tabClass).siblings().removeClass(tabClass);
        
        var _insertItem = function (obj, len, index){
            var startArr = [],
                endArr = [],
                newArr = [];
            
            for(var i = 0; i < len; i++){
                var id = arr[i].attr("id").replace("c","");
                
                if(id < index){
                    startArr.push(arr[i]);
                };
                if(id > index) {
                    endArr.push(arr[i]);
                }
            };
            $.each(endArr, function (){
                obj.append(this);
            });
            
            $.each(startArr, function (){
                obj.append(this);
            });
        }
        
        $btnParent.on("click", "li", function(){
            var nIndex = $(this).index();
            var warpTop = $parentCont.position().top;
            var moveHeight = $("#c"+nIndex).position().top - warpTop;
            
            $btnParent.find("li").eq(currIndex).removeClass(tabClass);
            $(this).addClass(tabClass);
            
            
            
            $parentCont.stop(true, true).animate({
                top: -moveHeight + "px"
            }, "slow", function (){
                _insertItem($parentCont, contents.length, nIndex);
                $parentCont.css("top", 0);
            });
            
            currIndex = nIndex;
        });
    };
    
    /**
     *@fileOverview 轮播
     *@example 
        $("#tabBox").scroll({
            "conts": 
        })
     */
    $.fn.scrollAnim = function(ops){
        var defaults = {
            list: "li",
            height: "60px",
            len: 3
        };
        var op = $.extend(defaults, ops);
        var $this = $(this);
        var timer;
        
        if ($this.find(op.list).length <= 3) {
            return false;
        }
        
        return this.each(function (){
            
            var moveAnim = function (n){
                var last = $this.find(op.list).last();
                
                last.css("height", 10);
                
                $this.prepend(last);
                
                last.animate({
                    height: op.height
                },1000);
            };
            
            moveAnim();
            
            timer = setInterval(moveAnim, 2000);
            
            $this.hover(function(){
                clearInterval(timer);
            }, function(){
                timer = setInterval(moveAnim, 2000);
            });
        });
        
    };
    /**
     *@fileOverview 提示
     *@example 
        $("#tipBox").tips()
     */
    $.fn.tips = function(ops){
        
        var $this = $(this);   
        var $tip = $("<div class='jqtip' style='display:none;'><span class='jqtip-top'></span><div class='jqtip-cont'>"+$this.attr("data")+"</div><span class='jqtip-bottom'></span></div>");
        
        return this.each(function (){
            
            $(this).hover(function(){
                $("body").append($tip);
                $tip.css({
                    "top": $(this).offset().top,
                    "left": $(this).offset().left
                })
                $tip.fadeIn();
            },function(){
                $tip.remove();
            });
        });
        
    };
    
    
})(jQuery);