//选项卡
var Tabs = (function ($) {
  var options = {
    selector: undefined,//
    close: false,//是否可以关闭标签
    //contextmenu: false,//右键菜单
    closeCallback: function () { }
  };
  var _newtab;
  var _tabcontent;
  var _drop;

  var tab = function () {
    this.options = {
      title: "",
      bindcode: undefined,
      url: undefined,
      close: false
    };
    var isfull = false;
    this.init = function (setting) {
      $.extend(this.options, setting);
    };
    this.addtab = function (setting) {
      $.extend(this.options, setting);
      var li, litop, hasdata;
      if (!_drop) {
        _drop = new droplist();
      };
      hasdata = ishas(this.options);
      if (!hasdata.has) {
        li = $('
' + this.options.title + '×
');
        li.data("data", $.extend(true, {}, this.options));
      } else {
        li = hasdata.selector.off("click");
      };
      li.prependTo(options.selector);
      li.find("span.close").show().on("click", function () {
        closetab(this);
      });
      options.selector.children("li").not(li).removeClass("active");
      li.addClass("active");
      litop = _drop.options.selector.position().top, paneltop = options.selector.position().top;
      if (litop > paneltop) { //超出检测
        _drop.addDropItem();
      };
    };

    function closetab(target) {
      var pager = $(target).parent().attr("href");
      $(target).closest("li").remove();
      options.selector.next().find(pager).remove();
      if (options.selector.find("li.active").length <= 0) {
        options.selector.find("li>a:first").tab("show");
      };

      var li = _drop.options.ulpanel.children("li:first");
      if (li.length <= 0) return;
      li.find("span.close").show();
      _drop.options.selector.before(li);
      if (_drop.options.selector.position().top > options.selector.position().top) {
        li.find("span.close").hide();
        _drop.options.ulpanel.append(li);
        return;
      };
      li.off("click");
      if (_drop.options.ulpanel.children("li").length <= 0) {
        _drop.options.selector.css({ "visibility": "hidden" });
      };
    };

    function ishas(setting) {//检测选项卡是否存在
      var lis = options.selector.find("li"), lidata, hasdata;
      hasdata = { selector: undefined, has: false };
      $.each(lis, function () {
        lidata = $(this).data("data");
        if (!lidata) return true;
        if (lidata.title === setting.title && lidata.bindcode === setting.bindcode && lidata.url === setting.url) {
          hasdata = { selector: $(this), has: true };
          return false;
        };
      });
      return hasdata;
    };
  };

  var tabcontent = function () {
    this.options = {
      selector:undefined
    };
    var option = {
      bindcode: undefined,
      url: undefined,
      content:undefined
    };

    this.init = function () {
      var content = $('
');
      this.options.selector = content;
      options.selector.after(this.options.selector);
    };
    this.addContent = function (setting) {
      var page,iframe;
      $.extend(option, setting);
      hasdata = ishas(option);
      if (!hasdata.has) {
        page = $('
').data("data", $.extend(true, {}, option));
        if (!option.url) {
          page.html(option.content);
        } else {
          iframe = $('');
          page.append(iframe);
        };
        page.appendTo(this.options.selector);
      } else {
        page = hasdata.selector;
      };
      this.options.selector.children("div").not(page).removeClass("active");
      page.addClass("active");
    };

    function ishas(setting) {//检测选项卡是否存在
      var divs = _tabcontent.options.selector.children("div"), divdata, hasdata;
      hasdata = { selector: undefined, has: false };
      $.each(divs, function () {
        divdata = $(this).data("data");
        if (!divdata) return true;
        if (divdata.bindcode === setting.bindcode) {
          hasdata = { selector: $(this), has: true };
          return false;
        };
      });
      return hasdata;
    };
  };

  var droplist = function () {
    this.options = {
      selector: undefined,
      ulpanel: undefined
    };

    this.init = function (panel) {
      var li = $('
');
      this.options.selector = li.css({ "visibility": "hidden" });
      this.options.ulpanel = li.children("ul");
      this.options.selector.appendTo(panel);
    };

    this.addDropItem = function () {
      additem(this.options.selector, this.options.ulpanel);
    };

    function additem(li, ul) {
      var item = options.selector.children("li").not(li).last();
      li.css({ "visibility": "visible" });
      if (item.length <= 0) return;
      item.find("span.close").hide();
      ul.append(item);
      item.one("click", function () {
        itemtarget(this, li, ul);
      });
    };

    function itemtarget(target, selector, ulpanel) {
      var item = options.selector.children("li").not(selector).last();
      $(target).find("span.close").show();
      $(target).prependTo(options.selector);
      if (item.length <= 0) return;
      if (selector.position().top > options.selector.position().top) {
        item.find("span.close").hide();
        ulpanel.append(item);
      };
      item.one("click", function () {
        itemtarget(this, selector, ulpanel);
      });
    };
  };

  function init(setting) {
    $.extend(options, setting);
    if (!options.selector) {
      return;
    };
    if (options.selector[0].tagName.toLowerCase() != "ul") {
      var selector = $('
').appendTo(options.selector);
      options.selector = selector;
    };
    if (!_drop) {
      _drop = new droplist();
    };
    _drop.init(options.selector);

    if (!_tabcontent) {
      _tabcontent = new tabcontent();
    };
    _tabcontent.init();
    if (!_newtab) {
      _newtab = new tab();
    };
  };

  function addtab(setting) {
    if (!_newtab) {
      _newtab = new tab();
    };
    _newtab.addtab(setting);
    if (!_tabcontent) {
      _tabcontent = new tabcontent();
    };
    _tabcontent.addContent(setting);
    options.selector.find('li>a').filter('[href=#page' + setting.bindcode + ']').tab("show");
  };

  return {
    init: function (setting) {
      init(setting);
    }, addtab: function (setting) {
      addtab(setting);
    }
  };
})(jQuery);