/*! idTabs v3.0 ~ Sean Catchpole - Copyright 2010 MIT/GPL */
;(function($){

  /* Changes for 3.0
   - return removed (it was depreciated)
   - passing arguments changed (id,s,e)
   - refresh of code speed and accuracy
   - items now object instead of id's
   - multiple tabs can now point to same id
   - removed autoloading jQuery
   - added item classes support
   - toggle visibility
   - update or remove idTabs
   - grouped areas
   - extend idTabs
  */

  /* Options (in any order):

   start (number|string)
      Index number of default tab. ex: $(...).idTabs(0)
      String of id of default tab. ex: $(...).idTabs("#tab1")
      default: class "selected" or index 0
      Passing -1 or null will force it to not select a default tab

   change (boolean)
      True - Url will change. ex: $(...).idTabs(true)
      False - Url will not change. ex: $(...).idTabs(false)
      default: false

   click (function)
      Function will be called when a tab is clicked. ex: $(...).idTabs(function(id,s){...})
      If the function returns false, idTabs will not take any action,
      otherwise idTabs will show/hide the content (as usual).
      The function is passed three variables:
        The id of the element to be shown
        The settings object which has the following additional items:
          area     - the original area $(area).idTabs();
          tabarea  - the current tab area used to find tabs
          tabs     - a jQuery list of tabs
          items    - a jQuery list of the elements the tabs point to
          tab(id)  - a helper function to find a tab with id
          item(id) - a helper function to find an item with id
        The event object that triggered idTabs

   selected (string)
      Class to use for selected. ex: $(...).idTabs(".current")
      default: ".selected"

   event (string)
      Event to trigger idTabs on. ex: $(...).idTabs("!mouseover")
      default: "!click"
      To bind multiple events, call idTabs multiple times
        ex: $(...).idTabs("!click").idTabs("!focus")

   toggle (boolean)
      True - Toggle visibility of tab content. ex: $(...).idTabs("!true")
      False - Ignore clicks on tabs already selected. ex: $(...).idTabs("!false")
      default: false

   grouped (boolean)
      True - Groups all tabs in area together. ex: $(...).idTabs(":grouped")
      False - jQuery selector is seperated into tab areas. ex: $(...).idTabs(":!grouped")
      default: false

   update (boolean)
      True - Rebinds idTabs ex: $(...).idTabs(":update");
      False - Cancels update ex: $(...).idTabs(":!update");

   remove (boolean)
      True - Removes idTabs ex: $(...).idTabs(":remove");
      False - Cancels removal ex: $(...).idTabs(":!remove");

  */

  // Helper functions
  var idTabs, //shortcut
  undefined,  //speed up
  href = function(e){ return $(e).attr("href"); },
  type = function(o){ //reliable
    return o===null && "Null"
        || o===undefined && "Undefined"
        || ({}).toString.call(o).slice(8,-1);
  };

  $.fn.idTabs = function(){
    var s = idTabs.args.apply(this,arguments),
    action = s.update&&"update" || s.remove&&"remove" || "bind";
    s.area = this; //save context
    idTabs[action](s);
    return this; //chainable
  };

  idTabs = $.idTabs = function(tabarea,options,data){
    // Settings
    var e, tabs, items, test=$(), meta = $.metadata?$(tabarea).metadata():{}, //metadata
    s = {tab:idTabs.tab,item:idTabs.item}; //helpers
    s = $.extend(s,idTabs.settings,meta,options||{}); //settings
    s.tabarea = $(tabarea); //save context
    s.data = data||"idTabs"+ +new Date; //save expando

    // Play nice
    $.each({selected:'.',event:'!',start:'#'},function(n,c){
      if(type(s[n])=="String" && s[n].indexOf(c)==0)
        s[n] = s[n].substr(1); }); //removes type characters
    if(s.start===null) s.start=-1; //no tab selected

    // Find tabs
    items = []; //save elements
    s.tabs = tabs = $("a[href^=#]",tabarea); //save tabs
    tabs.each(function(){ //add items
      test = s.item(href(this));
      if(test.length) items=items.concat(test.get());
    });
    s.items = $(items).hide(); //hide items

    // Save Settings
    e="idTabs."+s.event;
    data=s.tabarea.data("idTabs")||{};
    data[e]=s;
    s.tabarea.data("idTabs",data);

    // Bind idTabs
    tabs.trigger(e).data(s.data,s)
        .bind(e,{s:s},function(){ //wrapper function due to jQuery bug
          return idTabs.unbind.apply(this,arguments); })
        .bind(s.event,{s:s},idTabs.find);

    // Select default tab
       type(s.start) == "Number" && (s.start<0 || (test=tabs.eq(s.start)).length)
    || type(s.start) == "String" && (test=tabs.filter("a[href=#"+s.start+"]")).length
    || (test=tabs.filter('.'+s.selected).removeClass(s.selected)).length
    || (s.start===undefined && (test=tabs.eq(0)).length);
    if(test.length) test.trigger(s.event);

    return s; //return current settings (be creative)
  };

  // Parse arguments into settings
  idTabs.args = function(){
    var a,i=0,s={},args=arguments,
    // Handle string flags .!:
    str = function(_,a){
      if(a.indexOf('.')==0) s.selected = a;
      else if(a.indexOf('!')==0)
        if(/^!(true|false)$/i.test(a)) s.toggle = /^!true$/i.test(a);
        else s.event = a;
      else if(a.indexOf(':')==0) {
        a=a.substr(1).toLowerCase();
        if(a.indexOf('!')==0) s[a.substr(1)]=false;
        else s[a]=true;
      } else if(a) s.start = a;
    };
    // Loop through arguments matching options
    while(i<args.length) {
      a=args[i++];
      switch(type(a)){
        case "Object"   : $.extend(s,a); break;
        case "Boolean"  : s.change = a;  break;
        case "Number"   : s.start = a;   break;
        case "Function" : s.click = a;   break;
        case "Null"     : s.start = a;   break;
        case "String"   : $.each(a.split(/\s+/g),str);
        default: break;
      }
    }
    return s; //settings object
  };

  // Bind idTabs
  idTabs.bind = function(s){
    if(!s) return;
    var data = "idTabs"+ +new Date; //instance expando
    if(s.grouped) $.idTabs(s.area,s,data);
    else s.area.each(function(){ $.idTabs(this,s,data); });
  };

  // Rebind idTabs
  idTabs.update = function(s){
    if(!s) return;
    s.update=false;
    var self,data,n,e = s.event;
    e = (e+"").indexOf('!')==0 && e.substr(1) || e;
    e = e?"idTabs."+e:"";
    return s.area.each(function(){
      self = $(this);
      data = self.data("idTabs");
      if(!data) return;
      if(e) {
        n=$.extend({},data[e],s);
        idTabs.remove(data[e])
        idTabs(n.tabarea,n,n.data);
      } else for(e in data) {
        if(!Object.hasOwnProperty.call(data, e)) continue;
        n=$.extend({},data[e],s);
        idTabs.remove(data[e]);
        idTabs(n.tabarea,n,n.data);
      }
    });
  };

  // Unbind idTabs
  idTabs.remove = function(s){
    if(!s) return;
    var data,tabs,e = s.event;
    e = (e+"").indexOf('!')==0 && e.substr(1) || e;
    e = "idTabs"+(e?"."+e:"");
    return s.area.each(function(){
      data=$(this).data("idTabs");
      delete data["idTabs."+s.event];
      $(this).data("idTabs",data);
      tabs = s.tabs || $("a[href^=#]",this); //save tabs
      if(!tabs.length && $(this).is("a[href^=#]")) tabs = $(this);
      tabs.trigger(e);
    });
  };

  // Find tabs
  idTabs.find = function(e){
    // Save self since clicked tab may not be the first tab in the tabarea
    var self=this, ret=false, s=e.data.s;
    // Find first tab within each tabset
    $("a[href="+href(this)+"]:first",s.area).each(function(){
      var t = $(this).data(s.data); //tab's settings
      if(t) ret=idTabs.showtab.call(t.tabarea==s.tabarea?self:this,t,e)||ret;
    });
    return ret;
  };

  // Show tab
  idTabs.showtab = function(s,e){
    if(!s || !s.toggle && $(this).is('.'+s.selected))
      return s&&s.change; //return if already selected
    var id = href(this); //find id
    if(s.click && s.click.call(this,id,s,e)==false) return s.change; //call custom func
    if(s.toggle && $(this).is('.'+s.selected)) id=null; //hide items
    return idTabs.show.call(this,id,s,e); //call default func
  };

  // Show item
  idTabs.show = function(id,s){
    var $selected = s.selected;
    s.tabs.removeClass($selected); //clear tabs
    s.tab(id).addClass($selected); //select tab(s)

    if($(s.tab(id)).parent().children('[href^=#]').size() == 1){
      $(s.tabs).parent().removeClass($selected);
      $(s.tab(id)).parent().addClass($selected);
    }

    s.items.hide(); //hide all items
    s.item(id).show(); //show item(s)
    return s.change; //option for changing url
  };

  // Unbind idTabs
  idTabs.unbind = function(e){
    var s = e.data.s;
    $(this).removeData(s.data)
    .unbind("idTabs."+s.event);
    return false;
  };

  // Extend idTabs
  idTabs.extend = function(){
    var args = arguments;
    return function(){
      [].push.apply(args,arguments);
      this.idTabs.apply(this,args);
    };
  };

  // Matching tabs
  idTabs.tab = function(id){
    if(!id) return $([]);
    return $("a[href="+id+"]",this.tabarea);
  };

  // Matching items
  idTabs.item = function(id){
    if(!id) return $([]);
    var item = $(id);
    return item.length?item:$('.'+id.substr(1));
  };

  // Defaults
  idTabs.settings = {
    start:undefined,
    change:false,
    click:null,
    selected:".selected",
    event:"!click",
    toggle:false,
    grouped:false
  };

  // Version
  idTabs.version = "3.0";

  // Auto-run
  $(function(){ $(".idTabs").idTabs(); });

})(jQuery);