jquery制作多功能轮播图插件

;(function($) {
  "use strict";
  var methods = {
    o : {
      next: "#cycle-next",
      prev: "#cycle-prev",
      pager : "#cycle-nav",
      slider : "#beauty-slider",
      timeLine : "#timeLine",
      innerTimeLine : "#inner-timeLine",
      timeLineNode : "#timeLine-node",
      sliderItemClass : "sliderItem",
      nodeActive : "node_active",
      displays : {fade : "fade",left : "left",right : "right",top : "top",bottom : "bottom"},
      navHtml : "<a href='javascript:;' class='&'>?</a>",
      navConfig : {navBoxClass : "cycle-nav", navActiveClass: "activeSlide" ,showNum : true}
    },
    generateId : function(){
      return "-" + new Date().getTime();
    },
    generateTemplate : function(id,settings){
      var htmls = new Array();
      htmls.push('<div class="slider-wrap">');
      htmls.push('<div class="cycleslider-wrap">');
      htmls.push('<div id="beauty-slider' + id + '" class="cycleslider"></div>');
      if(settings.isArrow) {
        htmls.push('<a id="cycle-prev' + id + '" class="cycle-prev" href="javascript:;" title="试试左方向键翻页">Prev</a>');
        htmls.push('<a id="cycle-next' + id + '" class="cycle-next" href="javascript:;" title="试试右方向键翻页">Next</a>');
      }
      if(settings.showTimeLine) {
        htmls.push('<div class="timeLine" id="timeLine' + id + '">');
        htmls.push('<div class="innerTimeLine" id="inner-timeLine' + id + '" style="width:0px;">&nbsp;</div>');
        htmls.push('<div id="timeLine-node' + id + '"></div>');
        htmls.push('</div>');
      }
      if(settings.isNav) {
        htmls.push('<div id="cycle-nav' + id + '" class="cycle-nav"></div>');
      }
      htmls.push('</div>');
      htmls.push('<div class="loader"></div>');
      htmls.push('</div>');
      return htmls;
    },
    init : function(dom, options) {
      var s = this;
      var defaults = { url : "", data : {} , auto : false ,time : 2000, overLay : false, isArrow : true, isNav : true ,showTimeLine : false,showTip : false, keyboard : true, display : s.o.displays.fade,navConfig : s.o.navConfig};
      var settings = $.extend({},defaults, options);
      var id = s.generateId();
      $(".slider-wrap .loader").show();
      var imgArray = s.returnImgArray(dom, settings);
      if (imgArray != null && imgArray.length > 0) {
        s["imgcnt" + id] = imgArray.length;
        $(dom).html(s.generateTemplate(id,settings).join('')).show();
        var slider = $(s.o.slider + id);
        var pager = $(s.o.pager + id);
        var timeLineNode = $(s.o.timeLineNode + id);
        s.o.innerW = $(dom).width() - 20;
        var imgHtml = "";
        var pageHtml = "";
        var timeHtml = "";
        $.each(imgArray,function(index,item){
          var picClass = index == 0 ? s.o.sliderItemClass : s.o.sliderItemClass + " none";
          var navClass = index == 0 ? settings.navConfig.navActiveClass : "";
          imgHtml +='<div class="' + picClass + '"><a href="'+ ( s.isParamValid(item.picUrl) ? item.picUrl : "javascript:;" ) +'"><img src="' + item.picPath + '" width="'+item.width+'" height="' +item.height+ '" title="' + item.title + '"/></a></div>';
          pageHtml += s.o.navHtml.replace("?", settings.navConfig.showNum ? index + 1 : "").replace("&", navClass);
          var left = s.o.innerW * index / s["imgcnt" + id] - 13;
          var nodeClass = index == 0 ? s.o.nodeActive : "";
          timeHtml +='<div class="node ' + nodeClass + '" style="left: ' + left + 'px;">';
          if(settings.showTip) {
            timeHtml +='<div class="tooltip">' + item.title + '</div>';
          }
          timeHtml +='</div>';
        });
        slider.html(imgHtml);
        if(settings.isNav) {
          if(settings.navConfig.navBoxClass) {
            pager.removeClass(s.o.navConfig.navBoxClass).addClass(settings.navConfig.navBoxClass);
          }
          pager.html(pageHtml);
        }
        if(settings.showTimeLine) {
          timeLineNode.html(timeHtml);
        }
        slider.width(s.o.innerW);
        slider.find("." + s.o.sliderItemClass).width(s.o.innerW);
        $(s.o.timeLine + id).width(s.o.innerW);
        if(settings.overLay) {
          if($.fn.layerModel) {
            $(dom).layerModel({staySame : true, blurClose : true});
          } else {
            alert("请先引入layerModel插件!");
          }
        }
        s.initBind(id, settings);
        s["currentIndex" + id] = 0;
        var totalTime = settings.time / 1000 * s["imgcnt" + id];
        if(settings.auto) {
          if(settings.showTimeLine) {
            s.startTimeLine(id , totalTime,settings);
          } else {
            s.o.timeInterval = window.setInterval(function(){
              $("#cycle-next" + id).click();
            }, settings.time);
          }
        }
      } else {
        return;
      }
      return dom;
    },
    startTimeLine : function(id ,time, settings) {
      var s = this;
      var $innerTimeLine = $(s.o.innerTimeLine + id);
      var crnW = $innerTimeLine.width();
      for (var i = 0; i < s["imgcnt" + id]; i++) {
        var autoW = Math.floor(s.o.innerW * i / s["imgcnt" + id]);
        if(crnW == autoW) {
          s["currentIndex" + id] = i;
          s.updateImgLink(id, settings);
          $(s.o.timeLineNode + id).find("div.node").eq(i).addClass(s.o.nodeActive).siblings().removeClass(s.o.nodeActive);
        }
      }
      if(crnW < s.o.innerW) {
        $innerTimeLine.animate({width : "+=1px"}, time , 'linear', function(){
          s.startTimeLine(id, time, settings);
        });
      } else {
        $innerTimeLine.width(0);
        s.startTimeLine(id, time, settings);
      }
    },
    initBind :function(id, settings) {
      var s = this;
      var isEasing = $.easing.def;
      if(settings.isArrow) {
        $("#cycle-prev" + id + ", #cycle-next" + id).css({opacity: "0"});
        $(".cycleslider-wrap").hover(function(){
          $("#cycle-prev" + id).stop().animate({left: "-31", opacity: "1"},200,isEasing ? "easeOutCubic" : "");
          $("#cycle-next" + id).stop().animate({right: "-31", opacity: "1"},200,isEasing ?"easeOutCubic" : "");  
        }, function() {
          $("#cycle-prev" + id).stop().animate({left: "-50", opacity: "0"},400,isEasing ?"easeInCubic" : "");
          $("#cycle-next" + id).stop().animate({right: "-50", opacity: "0"},400,isEasing ?"easeInCubic" : "");    
        });
        $("#cycle-prev" + id).bind("click",function(){
          s["currentIndex" + id] = s["currentIndex" + id] <= 0 ? s["imgcnt" + id] - 1 : s["currentIndex" + id] - 1;
          s.updateImgLink(id,settings);
        });
        $("#cycle-next" + id).bind("click",function(){
          s["currentIndex" + id] = s["currentIndex" + id] < s["imgcnt" + id] - 1 ? s["currentIndex" + id] + 1 : 0;
          s.updateImgLink(id,settings);
        });
      }
      $(".slider-wrap .loader").hide();
      $("a",s.o.pager + id).bind("click",function(){
        if ($(this).hasClass(s.o.navConfig.navActiveClass)){
          return false;
        }
        s["currentIndex" + id] = $(this).index();
        s.updateImgLink(id,settings);
      });
       
      if(settings.auto && settings.showTimeLine) {
        $("div.node",s.o.timeLineNode + id).bind({
          click : function(){
            if($(this).hasClass(s.o.nodeActive)){
              return false;
            }
            s["currentIndex" + id] = $(this).index();
            s.updateImgLink(id,settings);
          },
          mouseover : function(){
            if(settings.showTip) {
              $(this).find(".tooltip").fadeIn();
            }
          },
          mouseout : function(){
            if(settings.showTip) {
              $(this).find(".tooltip").fadeOut();
            }
          }
        });
      }
      // 键盘操作
      if(settings.keyboard){
        $(window).keydown(function(event){
          //<---
          if(event.keyCode == 37){
            $("#cycle-prev" + id).click();
          }
          //--->
          if(event.keyCode == 39){
            $("#cycle-next" + id).click();
          }
        });
      }
    },
    updateImgLink : function(id, settings){
      var s = this;
      var index = s["currentIndex" + id];
      var display = settings.display;
      var isEasing = $.easing.def;
      var $items = $("div." + s.o.sliderItemClass,s.o.slider + id);
      switch (display) {
        case s.o.displays.fade :
          $items.eq(index).show().siblings().hide();
          break;
        case s.o.displays.left :
          $items.css({ position : "absolute", top : 0, left : s.o.innerW }).hide();
          $items.eq(index).animate({ left : 0 }, 100, isEasing ? "easeOutCubic" : "").show();
          $(s.o.slider + id).height(s.getImgMaxHeight(id));
          break;
        case s.o.displays.right :
          $items.css({ position : "absolute", top : 0, right : s.o.innerW }).hide();
          $items.eq(index).animate({ right : 0 }, 100, isEasing ? "easeOutCubic" : "").show();
          $(s.o.slider + id).height(s.getImgMaxHeight(id));
          break;
        case s.o.displays.top :
          break;
        case s.o.displays.bottom : 
          break;
        default :
          break;
      }
      $("a",s.o.pager + id).eq(index).addClass(settings.navConfig.navActiveClass).siblings().removeClass(settings.navConfig.navActiveClass);
      // 更新进度条的信息
      if(settings.auto && settings.showTimeLine) {
        var indexWidth = Math.floor(s.o.innerW * index / s["imgcnt" + id]);
        $(s.o.innerTimeLine + id).animate({width : indexWidth +"px"}, 500 , 'linear', function(){
          $(s.o.timeLineNode + id).find("div.node").eq(index).addClass(s.o.nodeActive).siblings().removeClass(s.o.nodeActive);
        });
      }
    },
    getImgMaxHeight : function(id) {
      var s = this;
      var slider = $(s.o.slider + id);
      var maxHeight = 0;
      $.each(slider.find("img"),function(index,item){
        var imgHeight = this.height;
        maxHeight = Math.max(maxHeight,imgHeight);
      });
      return maxHeight;
    },
    returnImgArray : function(dom,settings){
      var s = this;
      var imgArray = new Array();
      var url = settings.url;
      if (s.isParamValid(url)) {
        $.ajax({
          url : url + "?t=" + new Date().getTime(),
          type : 'POST',
          async : false,
          data : settings.data,
          dataType : 'json',
          success : function(data) {
            if (s.isParamValid(data)) {
              $.each(data, function(index, item) {
                imgArray.push(item);
              });
            }
          },
          error : function() {
            alert("图片数据源地址无效...");
            return null;
          },
          complete : function(XHR, TS) { XHR = null; }
        });
      } else {
        var imgs = $(dom).find("img");
        if (imgs != null && imgs.length > 0) {
          $.each(imgs,function(i,o){
            var pic = new Object();
            pic.picUrl = $(o).parent("a").attr("href");
            pic.picPath = $(o).attr("src");
            pic.width = $(o).attr("width");
            pic.height = $(o).attr("height");
            pic.title = $(o).attr("title");
            imgArray.push(pic);
          });
        }
      }
      return imgArray;
    },
    isParamValid : function(v) {
      return !(v == "" || v == null || v == undefined);
    }
  };
  $.fn.beautyFocus = function(options) {
    return this.each(function(index,item) {
      methods.init(item, options);  
    });
  };
})(jQuery);