/*
 * jQuery UI @VERSION
 *
 * Copyright (c) 2008 Paul Bakaus (ui.jquery.com)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI
 */
;(function($) {

/** jQuery core modifications and additions **/
$.keyCode = {
   BACKSPACE: 8,
   CAPS_LOCK: 20,
   COMMA: 188,
   CONTROL: 17,
   DELETE: 46,
   DOWN: 40,
   END: 35,
   ENTER: 13,
   ESCAPE: 27,
   HOME: 36,
   INSERT: 45,
   LEFT: 37,
   NUMPAD_ADD: 107,
   NUMPAD_DECIMAL: 110,
   NUMPAD_DIVIDE: 111,
   NUMPAD_ENTER: 108,
   NUMPAD_MULTIPLY: 106,
   NUMPAD_SUBTRACT: 109,
   PAGE_DOWN: 34,
   PAGE_UP: 33,
   PERIOD: 190,
   RIGHT: 39,
   SHIFT: 16,
   SPACE: 32,
   TAB: 9,
   UP: 38
};

//Temporary mappings
var _remove = $.fn.remove;
var isFF2 = $.browser.mozilla && (parseFloat($.browser.version) < 1.9);


//Helper functions and ui object
$.ui = {
   
   version: "@VERSION",
   
   // $.ui.plugin is deprecated.  Use the proxy pattern instead.
   plugin: {
      add: function(module, option, set) {
         var proto = $.ui[module].prototype;
         for(var i in set) {
            proto.plugins[i] = proto.plugins[i] || [];
            proto.plugins[i].push([option, set[i]]);
         }
      },
      call: function(instance, name, args) {
         var set = instance.plugins[name];
         if(!set) { return; }
         
         for (var i = 0; i < set.length; i++) {
            if (instance.options[set[i][0]]) {
               set[i][1].apply(instance.element, args);
            }
         }
      }  
   },
   
   cssCache: {},
   css: function(name) {
      if ($.ui.cssCache[name]) { return $.ui.cssCache[name]; }
      var tmp = $('<div class="ui-gen">').addClass(name).css({position:'absolute', top:'-5000px', left:'-5000px', display:'block'}).appendTo('body');
      
      //if (!$.browser.safari)
         //tmp.appendTo('body');
      
      //Opera and Safari set width and height to 0px instead of auto
      //Safari returns rgba(0,0,0,0) when bgcolor is not set
      $.ui.cssCache[name] = !!(
         (!(/auto|default/).test(tmp.css('cursor')) || (/^[1-9]/).test(tmp.css('height')) || (/^[1-9]/).test(tmp.css('width')) || 
         !(/none/).test(tmp.css('backgroundImage')) || !(/transparent|rgba\(0, 0, 0, 0\)/).test(tmp.css('backgroundColor')))
      );
      try { $('body').get(0).removeChild(tmp.get(0)); } catch(e){}
      return $.ui.cssCache[name];
   },

   hasScroll: function(e, a) {
      
      //If overflow is hidden, the element might have extra content, but the user wants to hide it
      if ($(e).css('overflow') == 'hidden') { return false; }
      
      var scroll = (a && a == 'left') ? 'scrollLeft' : 'scrollTop',
         has = false;
      
      if (e[scroll] > 0) { return true; }
      
      // TODO: determine which cases actually cause this to happen
      // if the element doesn't have the scroll set, see if it's possible to
      // set the scroll
      e[scroll] = 1;
      has = (e[scroll] > 0);
      e[scroll] = 0;
      return has;
   }
};


//jQuery plugins
$.fn.extend({
   
   remove: function() {
      // Safari has a native remove event which actually removes DOM elements,
      // so we have to use triggerHandler instead of trigger (#3037).
      $("*", this).add(this).each(function() {
         $(this).triggerHandler("remove");
      });
      return _remove.apply(this, arguments );
   },
   
   enableSelection: function() {
      return this
         .attr('unselectable', 'off')
         .css('MozUserSelect', '')
         .unbind('selectstart.ui');
   },
   
   disableSelection: function() {
      return this
         .attr('unselectable', 'on')
         .css('MozUserSelect', 'none')
         .bind('selectstart.ui', function() { return false; });
   },
   
   // WAI-ARIA Semantics
   ariaRole: function(role) {
      return (role !== undefined
         
         // setter
         ? this.attr("role", isFF2 ? "wairole:" + role : role)
         
         // getter
         : (this.attr("role") || "").replace(/^wairole:/, ""));
   },
   
   ariaState: function(state, value) {
      return (value !== undefined
         
         // setter
         ? this.each(function(i, el) {
            (isFF2
               ? el.setAttributeNS("http://www.w3.org/2005/07/aaa",
                  "aaa:" + state, value)
               : $(el).attr("aria-" + state, value));
         })
         
         // getter
         : this.attr(isFF2 ? "aaa:" + state : "aria-" + state));
   }
   
});


//Additional selectors
$.extend($.expr[':'], {
   
   data: function(a, i, m) {
      return $.data(a, m[3]);
   },
   
   // TODO: add support for object, area
   tabbable: function(a, i, m) {

      var nodeName = a.nodeName.toLowerCase();
      var isVisible = function(element) {
         function checkStyles(element) {
            var style = element.style;
            return (style.display != 'none' && style.visibility != 'hidden');
         }
         
         var visible = checkStyles(element);
         
         (visible && $.each($.dir(element, 'parentNode'), function() {
            return (visible = checkStyles(this));
         }));
         
         return visible;
      };
      
      return (
         // in tab order
         a.tabIndex >= 0 &&
         
         ( // filter node types that participate in the tab order
            
            // anchor tag
            ('a' == nodeName && a.href) ||
            
            // enabled form element
            (/input|select|textarea|button/.test(nodeName) &&
               'hidden' != a.type && !a.disabled)
         ) &&
         
         // visible on page
         isVisible(a)
      );
      
   }
   
});


// $.widget is a factory to create jQuery plugins
// taking some boilerplate code out of the plugin code
// created by Scott González and Jörn Zaefferer
function getter(namespace, plugin, method, args) {
   function getMethods(type) {
      var methods = $[namespace][plugin][type] || [];
      return (typeof methods == 'string' ? methods.split(/,?\s+/) : methods);
   }
   
   var methods = getMethods('getter');
   if (args.length == 1 && typeof args[0] == 'string') {
      methods = methods.concat(getMethods('getterSetter'));
   }
   return ($.inArray(method, methods) != -1);
}

$.widget = function(name, prototype) {
   var namespace = name.split(".")[0];
   name = name.split(".")[1];
   
   // create plugin method
   $.fn[name] = function(options) {
      var isMethodCall = (typeof options == 'string'),
         args = Array.prototype.slice.call(arguments, 1);
      
      // prevent calls to internal methods
      if (isMethodCall && options.substring(0, 1) == '_') {
         return this;
      }
      
      // handle getter methods
      if (isMethodCall && getter(namespace, name, options, args)) {
         var instance = $.data(this[0], name);
         return (instance ? instance[options].apply(instance, args)
            : undefined);
      }
      
      // handle initialization and non-getter methods
      return this.each(function() {
         var instance = $.data(this, name);
         
         // constructor
         (!instance && !isMethodCall &&
            $.data(this, name, new $[namespace][name](this, options)));
         
         // method call
         (instance && isMethodCall && $.isFunction(instance[options]) &&
            instance[options].apply(instance, args));
      });
   };
   
   // create widget constructor
   $[namespace] = $[namespace] || {};
   $[namespace][name] = function(element, options) {
      var self = this;
      
      this.widgetName = name;
      this.widgetEventPrefix = $[namespace][name].eventPrefix || name;
      this.widgetBaseClass = namespace + '-' + name;
      
      this.options = $.extend({},
         $.widget.defaults,
         $[namespace][name].defaults,
         $.metadata && $.metadata.get(element)[name],
         options);
      
      this.element = $(element)
         .bind('setData.' + name, function(e, key, value) {
            return self._setData(key, value);
         })
         .bind('getData.' + name, function(e, key) {
            return self._getData(key);
         })
         .bind('remove', function() {
            return self.destroy();
         });
      
      this._init();
   };
   
   // add widget prototype
   $[namespace][name].prototype = $.extend({}, $.widget.prototype, prototype);
   
   // TODO: merge getter and getterSetter properties from widget prototype
   // and plugin prototype
   $[namespace][name].getterSetter = 'option';
};

$.widget.prototype = {
   _init: function() {},
   destroy: function() {
      this.element.removeData(this.widgetName);
   },
   
   option: function(key, value) {
      var options = key,
         self = this;
      
      if (typeof key == "string") {
         if (value === undefined) {
            return this._getData(key);
         }
         options = {};
         options[key] = value;
      }
      
      $.each(options, function(key, value) {
         self._setData(key, value);
      });
   },
   _getData: function(key) {
      return this.options[key];
   },
   _setData: function(key, value) {
      this.options[key] = value;
      
      if (key == 'disabled') {
         this.element[value ? 'addClass' : 'removeClass'](
            this.widgetBaseClass + '-disabled');
      }
   },
   
   enable: function() {
      this._setData('disabled', false);
   },
   disable: function() {
      this._setData('disabled', true);
   },
   
   _trigger: function(type, e, data) {
      var eventName = (type == this.widgetEventPrefix
         ? type : this.widgetEventPrefix + type);
      e = e  || $.event.fix({ type: eventName, target: this.element[0] });
      return this.element.triggerHandler(eventName, [e, data], this.options[type]);
   }
};

$.widget.defaults = {
   disabled: false
};


/** Mouse Interaction Plugin **/

$.ui.mouse = {
   _mouseInit: function() {
      var self = this;
   
      this.element
         .bind('mousedown.'+this.widgetName, function(e) {
            return self._mouseDown(e);
         })
         .bind('click.'+this.widgetName, function(e) {
            if(self._preventClickEvent) {
               self._preventClickEvent = false;
               return false;
            }
         });
      
      // Prevent text selection in IE
      if ($.browser.msie) {
         this._mouseUnselectable = this.element.attr('unselectable');
         this.element.attr('unselectable', 'on');
      }
      
      this.started = false;
   },
   
   // TODO: make sure destroying one instance of mouse doesn't mess with
   // other instances of mouse
   _mouseDestroy: function() {
      this.element.unbind('.'+this.widgetName);
      
      // Restore text selection in IE
      ($.browser.msie
         && this.element.attr('unselectable', this._mouseUnselectable));
   },
   
   _mouseDown: function(e) {
      // we may have missed mouseup (out of window)
      (this._mouseStarted && this._mouseUp(e));
      
      this._mouseDownEvent = e;
      
      var self = this,
         btnIsLeft = (e.which == 1),
         elIsCancel = (typeof this.options.cancel == "string" ? $(e.target).parents().add(e.target).filter(this.options.cancel).length : false);
      if (!btnIsLeft || elIsCancel || !this._mouseCapture(e)) {
         return true;
      }
      
      this.mouseDelayMet = !this.options.delay;
      if (!this.mouseDelayMet) {
         this._mouseDelayTimer = setTimeout(function() {
            self.mouseDelayMet = true;
         }, this.options.delay);
      }
      
      if (this._mouseDistanceMet(e) && this._mouseDelayMet(e)) {
         this._mouseStarted = (this._mouseStart(e) !== false);
         if (!this._mouseStarted) {
            e.preventDefault();
            return true;
         }
      }
      
      // these delegates are required to keep context
      this._mouseMoveDelegate = function(e) {
         return self._mouseMove(e);
      };
      this._mouseUpDelegate = function(e) {
         return self._mouseUp(e);
      };
      $(document)
         .bind('mousemove.'+this.widgetName, this._mouseMoveDelegate)
         .bind('mouseup.'+this.widgetName, this._mouseUpDelegate);
      
      return false;
   },
   
   _mouseMove: function(e) {
      // IE mouseup check - mouseup happened when mouse was out of window
      if ($.browser.msie && !e.button) {
         return this._mouseUp(e);
      }
      
      if (this._mouseStarted) {
         this._mouseDrag(e);
         return false;
      }
      
      if (this._mouseDistanceMet(e) && this._mouseDelayMet(e)) {
         this._mouseStarted =
            (this._mouseStart(this._mouseDownEvent, e) !== false);
         (this._mouseStarted ? this._mouseDrag(e) : this._mouseUp(e));
      }
      
      return !this._mouseStarted;
   },
   
   _mouseUp: function(e) {
      $(document)
         .unbind('mousemove.'+this.widgetName, this._mouseMoveDelegate)
         .unbind('mouseup.'+this.widgetName, this._mouseUpDelegate);
      
      if (this._mouseStarted) {
         this._mouseStarted = false;
         this._preventClickEvent = true;
         this._mouseStop(e);
      }
      
      return false;
   },
   
   _mouseDistanceMet: function(e) {
      return (Math.max(
            Math.abs(this._mouseDownEvent.pageX - e.pageX),
            Math.abs(this._mouseDownEvent.pageY - e.pageY)
         ) >= this.options.distance
      );
   },
   
   _mouseDelayMet: function(e) {
      return this.mouseDelayMet;
   },
   
   // These are placeholder methods, to be overriden by extending plugin
   _mouseStart: function(e) {},
   _mouseDrag: function(e) {},
   _mouseStop: function(e) {},
   _mouseCapture: function(e) { return true; }
};

$.ui.mouse.defaults = {
   cancel: null,
   distance: 1,
   delay: 0
};

})(jQuery);