// 轮播图插件
;(function($){
    var fadeslide = function(carousel){
        var self = this;
        // 保存单个轮播图对象
        this.carousel = carousel;//轮播大容器
        this.setting = {
            "pictures"  : ".banner li",
            "indexs"    : ".bannerindex dd",
            "btnprev"   : ".prev",
            "btnnext"   : ".next",
            "infos"     : ".title p",
            "autoplay"  : true,
            "delay"     : 5000
        };
        //默认配置参数
        $.extend(this.setting,this.getsetting());

        this.itempics = carousel.find(this.setting.pictures);
        this.itemindexs = carousel.find(this.setting.indexs);
        this.iteminfos = carousel.find(this.setting.infos);
        this.prevbtn = carousel.find(this.setting.btnprev);
        this.nextbtn = carousel.find(this.setting.btnnext);
        this.piclens = this.itempics.length;
        this.delay = this.setting.delay;
        this.timer = 0;
        this.cindex = 0;
        this.pindex = -1;
        this.citempic = this.itempics.eq(this.cindex);
        this.citemindex = this.itemindexs.eq(this.cindex);

        // 设置默认状态
        this.setdefault();
        // 开始运行
        if(this.piclens > 1){
            this.gofade();
        }
        // 左切换
        this.prevbtn.click(function(){
            self.gofade(self.indexreduce());
        });
        // 右切换
        this.nextbtn.click(function(){
            self.gofade(self.indexadd());
        });
        // 索引移动切换
        this.itemindexs.hover(function(){
            self.cindex = $(this).index();
            if(self.cindex === self.pindex) return;
            self.gofade(self.cindex);
        });
        // 鼠标经过图片暂停自动运行
        this.carousel.hover(function(){
            cleartimeout(self.timer);
        },function(){
            self.autoplay();
        });
    };

    fadeslide.prototype = {

        // 自动运行
        autoplay:function(){
            var self = this;
            this.timer = settimeout(function(){
                self.gofade(self.indexadd());
            },this.delay);
        },
        // 淡入淡出切换
        gofade:function(cindex){
            cleartimeout(this.timer);
            this.pindex = this.cindex;
            this.citempic.stop(false,true).fadeout(800);
            this.citempic =  this.itempics.eq(this.cindex).stop(false,true).fadein(800);
            // 索引切换
            this.citemindex.removeclass("on");
            this.citemindex = this.itemindexs.eq(this.cindex).addclass("on");
            // 文本切换
            this.iteminfos.hide();
            this.iteminfos.eq(this.cindex).fadein(400);
            if(this.piclens > 1){
                // 自动运行
                this.autoplay();
            }
        },
        // 设置默认状态
        setdefault:function(){
            this.itempics.first().show();
            if(this.itemindexs.length == 1){
                this.citemindex.hide();
                this.prevbtn.hide();
                this.nextbtn.hide();
            }
        },
        // 索引增加
        indexadd:function(){
            return (this.cindex === this.piclens-1) ? this.cindex = 0 : ++this.cindex;
        },
        // 索引减少
        indexreduce:function(){
            return (this.cindex === 0) ? this.cindex = this.piclens-1 : --this.cindex;
        },
        //获取人工参数配置
        getsetting:function(){
            // console.log(this.carousel);
            var setting = this.carousel.attr("data-setting");
            if(setting && setting!=""){
                return $.parsejson(setting);
            }else{
                return {};
            };
        }
    };

    fadeslide.init = function(dom){
        var _this_ = this;
        dom.each(function(){
            new _this_($(this));
        });
    };

    window["fadeslide"] = fadeslide;

})(jquery);