/*
 * jQuery UI 1.7.1
 *
 * Copyright (c) 2009 AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI
 */
;jQuery.ui || (function($) {

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

//Helper functions and ui object
$.ui = {
   version: "1.7.1",

   // $.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 || !instance.element[0].parentNode) { return; }

         for (var i = 0; i < set.length; i++) {
            if (instance.options[set[i][0]]) {
               set[i][1].apply(instance.element, args);
            }
         }
      }
   },

   contains: function(a, b) {
      return document.compareDocumentPosition
         ? a.compareDocumentPosition(b) & 16
         : a !== b && a.contains(b);
   },

   hasScroll: function(el, a) {

      //If overflow is hidden, the element might have extra content, but the user wants to hide it
      if ($(el).css('overflow') == 'hidden') { return false; }

      var scroll = (a && a == 'left') ? 'scrollLeft' : 'scrollTop',
         has = false;

      if (el[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
      el[scroll] = 1;
      has = (el[scroll] > 0);
      el[scroll] = 0;
      return has;
   },

   isOverAxis: function(x, reference, size) {
      //Determines when x coordinate is over "b" element axis
      return (x > reference) && (x < (reference + size));
   },

   isOver: function(y, x, top, left, height, width) {
      //Determines when x, y coordinates is over "b" element
      return $.ui.isOverAxis(y, top, height) && $.ui.isOverAxis(x, left, width);
   },

   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
   }
};

// WAI-ARIA normalization
if (isFF2) {
   var attr = $.attr,
      removeAttr = $.fn.removeAttr,
      ariaNS = "http://www.w3.org/2005/07/aaa",
      ariaState = /^aria-/,
      ariaRole = /^wairole:/;

   $.attr = function(elem, name, value) {
      var set = value !== undefined;

      return (name == 'role'
         ? (set
            ? attr.call(this, elem, name, "wairole:" + value)
            : (attr.apply(this, arguments) || "").replace(ariaRole, ""))
         : (ariaState.test(name)
            ? (set
               ? elem.setAttributeNS(ariaNS,
                  name.replace(ariaState, "aaa:"), value)
               : attr.call(this, elem, name.replace(ariaState, "aaa:")))
            : attr.apply(this, arguments)));
   };

   $.fn.removeAttr = function(name) {
      return (ariaState.test(name)
         ? this.each(function() {
            this.removeAttributeNS(ariaNS, name.replace(ariaState, ""));
         }) : removeAttr.call(this, name));
   };
}

//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; });
   },

   scrollParent: function() {
      var scrollParent;
      if(($.browser.msie && (/(static|relative)/).test(this.css('position'))) || (/absolute/).test(this.css('position'))) {
         scrollParent = this.parents().filter(function() {
            return (/(relative|absolute|fixed)/).test($.curCSS(this,'position',1)) && (/(auto|scroll)/).test($.curCSS(this,'overflow',1)+$.curCSS(this,'overflow-y',1)+$.curCSS(this,'overflow-x',1));
         }).eq(0);
      } else {
         scrollParent = this.parents().filter(function() {
            return (/(auto|scroll)/).test($.curCSS(this,'overflow',1)+$.curCSS(this,'overflow-y',1)+$.curCSS(this,'overflow-x',1));
         }).eq(0);
      }

      return (/fixed/).test(this.css('position')) || !scrollParent.length ? $(document) : scrollParent;
   }
});


//Additional selectors
$.extend($.expr[':'], {
   data: function(elem, i, match) {
      return !!$.data(elem, match[3]);
   },

   focusable: function(element) {
      var nodeName = element.nodeName.toLowerCase(),
         tabIndex = $.attr(element, 'tabindex');
      return (/input|select|textarea|button|object/.test(nodeName)
         ? !element.disabled
         : 'a' == nodeName || 'area' == nodeName
            ? element.href || !isNaN(tabIndex)
            : !isNaN(tabIndex))
         // the element and all of its ancestors must be visible
         // the browser may report that the area is hidden
         && !$(element)['area' == nodeName ? 'parents' : 'closest'](':hidden').length;
   },

   tabbable: function(element) {
      var tabIndex = $.attr(element, 'tabindex');
      return (isNaN(tabIndex) || tabIndex >= 0) && $(element).is(':focusable');
   }
});


// $.widget is a factory to create jQuery plugins
// taking some boilerplate code out of the plugin code
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))._init());

         // 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.namespace = namespace;
      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(event, key, value) {
            if (event.target == element) {
               return self._setData(key, value);
            }
         })
         .bind('getData.' + name, function(event, key) {
            if (event.target == element) {
               return self._getData(key);
            }
         })
         .bind('remove', function() {
            return self.destroy();
         });
   };

   // 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)
         .removeClass(this.widgetBaseClass + '-disabled' + ' ' + this.namespace + '-state-disabled')
         .removeAttr('aria-disabled');
   },

   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' + ' ' +
               this.namespace + '-state-disabled')
            .attr("aria-disabled", value);
      }
   },

   enable: function() {
      this._setData('disabled', false);
   },
   disable: function() {
      this._setData('disabled', true);
   },

   _trigger: function(type, event, data) {
      var callback = this.options[type],
         eventName = (type == this.widgetEventPrefix
            ? type : this.widgetEventPrefix + type);

      event = $.Event(event);
      event.type = eventName;

      // copy original event properties over to the new event
      // this would happen if we could call $.event.fix instead of $.Event
      // but we don't have a way to force an event to be fixed multiple times
      if (event.originalEvent) {
         for (var i = $.event.props.length, prop; i;) {
            prop = $.event.props[--i];
            event[prop] = event.originalEvent[prop];
         }
      }

      this.element.trigger(event, data);

      return !($.isFunction(callback) && callback.call(this.element[0], event, data) === false
         || event.isDefaultPrevented());
   }
};

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


/** Mouse Interaction Plugin **/

$.ui.mouse = {
   _mouseInit: function() {
      var self = this;

      this.element
         .bind('mousedown.'+this.widgetName, function(event) {
            return self._mouseDown(event);
         })
         .bind('click.'+this.widgetName, function(event) {
            if(self._preventClickEvent) {
               self._preventClickEvent = false;
               event.stopImmediatePropagation();
               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(event) {
      // don't let more than one widget handle mouseStart
      // TODO: figure out why we have to use originalEvent
      event.originalEvent = event.originalEvent || {};
      if (event.originalEvent.mouseHandled) { return; }

      // we may have missed mouseup (out of window)
      (this._mouseStarted && this._mouseUp(event));

      this._mouseDownEvent = event;

      var self = this,
         btnIsLeft = (event.which == 1),
         elIsCancel = (typeof this.options.cancel == "string" ? $(event.target).parents().add(event.target).filter(this.options.cancel).length : false);
      if (!btnIsLeft || elIsCancel || !this._mouseCapture(event)) {
         return true;
      }

      this.mouseDelayMet = !this.options.delay;
      if (!this.mouseDelayMet) {
         this._mouseDelayTimer = setTimeout(function() {
            self.mouseDelayMet = true;
         }, this.options.delay);
      }

      if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
         this._mouseStarted = (this._mouseStart(event) !== false);
         if (!this._mouseStarted) {
            event.preventDefault();
            return true;
         }
      }

      // these delegates are required to keep context
      this._mouseMoveDelegate = function(event) {
         return self._mouseMove(event);
      };
      this._mouseUpDelegate = function(event) {
         return self._mouseUp(event);
      };
      $(document)
         .bind('mousemove.'+this.widgetName, this._mouseMoveDelegate)
         .bind('mouseup.'+this.widgetName, this._mouseUpDelegate);

      // preventDefault() is used to prevent the selection of text here -
      // however, in Safari, this causes select boxes not to be selectable
      // anymore, so this fix is needed
      ($.browser.safari || event.preventDefault());

      event.originalEvent.mouseHandled = true;
      return true;
   },

   _mouseMove: function(event) {
      // IE mouseup check - mouseup happened when mouse was out of window
      if ($.browser.msie && !event.button) {
         return this._mouseUp(event);
      }

      if (this._mouseStarted) {
         this._mouseDrag(event);
         return event.preventDefault();
      }

      if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
         this._mouseStarted =
            (this._mouseStart(this._mouseDownEvent, event) !== false);
         (this._mouseStarted ? this._mouseDrag(event) : this._mouseUp(event));
      }

      return !this._mouseStarted;
   },

   _mouseUp: function(event) {
      $(document)
         .unbind('mousemove.'+this.widgetName, this._mouseMoveDelegate)
         .unbind('mouseup.'+this.widgetName, this._mouseUpDelegate);

      if (this._mouseStarted) {
         this._mouseStarted = false;
         this._preventClickEvent = (event.target == this._mouseDownEvent.target);
         this._mouseStop(event);
      }

      return false;
   },

   _mouseDistanceMet: function(event) {
      return (Math.max(
            Math.abs(this._mouseDownEvent.pageX - event.pageX),
            Math.abs(this._mouseDownEvent.pageY - event.pageY)
         ) >= this.options.distance
      );
   },

   _mouseDelayMet: function(event) {
      return this.mouseDelayMet;
   },

   // These are placeholder methods, to be overriden by extending plugin
   _mouseStart: function(event) {},
   _mouseDrag: function(event) {},
   _mouseStop: function(event) {},
   _mouseCapture: function(event) { return true; }
};

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

})(jQuery);