/*!
 * jQuery UI Widget 1.8.2
 *
 * Copyright (c) 2010 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/Widget
 */
(function( $ ) {

var _remove = $.fn.remove;

$.fn.remove = function( selector, keepData ) {
  return this.each(function() {
    if ( !keepData ) {
      if ( !selector || $.filter( selector, [ this ] ).length ) {
        $( "*", this ).add( this ).each(function() {
          $( this ).triggerHandler( "remove" );
        });
      }
    }
    return _remove.call( $(this), selector, keepData );
  });
};

$.widget = function( name, base, prototype ) {
  var namespace = name.split( "." )[ 0 ],
    fullName;
  name = name.split( "." )[ 1 ];
  fullName = namespace + "-" + name;

  if ( !prototype ) {
    prototype = base;
    base = $.Widget;
  }

  // create selector for plugin
  $.expr[ ":" ][ fullName ] = function( elem ) {
    return !!$.data( elem, name );
  };

  $[ namespace ] = $[ namespace ] || {};
  $[ namespace ][ name ] = function( options, element ) {
    // allow instantiation without initializing for simple inheritance
    if ( arguments.length ) {
      this._createWidget( options, element );
    }
  };

  var basePrototype = new base();
  // we need to make the options hash a property directly on the new instance
  // otherwise we'll modify the options hash on the prototype that we're
  // inheriting from
//  $.each( basePrototype, function( key, val ) {
//    if ( $.isPlainObject(val) ) {
//      basePrototype[ key ] = $.extend( {}, val );
//    }
//  });
  basePrototype.options = $.extend( {}, basePrototype.options );
  $[ namespace ][ name ].prototype = $.extend( true, basePrototype, {
    namespace: namespace,
    widgetName: name,
    widgetEventPrefix: $[ namespace ][ name ].prototype.widgetEventPrefix || name,
    widgetBaseClass: fullName
  }, prototype );

  $.widget.bridge( name, $[ namespace ][ name ] );
};

$.widget.bridge = function( name, object ) {
  $.fn[ name ] = function( options ) {
    var isMethodCall = typeof options === "string",
      args = Array.prototype.slice.call( arguments, 1 ),
      returnValue = this;

    // allow multiple hashes to be passed on init
    options = !isMethodCall && args.length ?
      $.extend.apply( null, [ true, options ].concat(args) ) :
      options;

    // prevent calls to internal methods
    if ( isMethodCall && options.substring( 0, 1 ) === "_" ) {
      return returnValue;
    }

    if ( isMethodCall ) {
      this.each(function() {
        var instance = $.data( this, name ),
          methodValue = instance && $.isFunction( instance[options] ) ?
            instance[ options ].apply( instance, args ) :
            instance;
        if ( methodValue !== instance && methodValue !== undefined ) {
          returnValue = methodValue;
          return false;
        }
      });
    } else {
      this.each(function() {
        var instance = $.data( this, name );
        if ( instance ) {
          if ( options ) {
            instance.option( options );
          }
          instance._init();
        } else {
          $.data( this, name, new object( options, this ) );
        }
      });
    }

    return returnValue;
  };
};

$.Widget = function( options, element ) {
  // allow instantiation without initializing for simple inheritance
  if ( arguments.length ) {
    this._createWidget( options, element );
  }
};

$.Widget.prototype = {
  widgetName: "widget",
  widgetEventPrefix: "",
  options: {
    disabled: false
  },
  _createWidget: function( options, element ) {
    // $.widget.bridge stores the plugin instance, but we do it anyway
    // so that it's stored even before the _create function runs
    this.element = $( element ).data( this.widgetName, this );
    this.options = $.extend( true, {},
      this.options,
      $.metadata && $.metadata.get( element )[ this.widgetName ],
      options );

    var self = this;
    this.element.bind( "remove." + this.widgetName, function() {
      self.destroy();
    });

    this._create();
    this._init();
  },
  _create: function() {},
  _init: function() {},

  destroy: function() {
    this.element
      .unbind( "." + this.widgetName )
      .removeData( this.widgetName );
    this.widget()
      .unbind( "." + this.widgetName )
      .removeAttr( "aria-disabled" )
      .removeClass(
        this.widgetBaseClass + "-disabled " +
        "ui-state-disabled" );
  },

  widget: function() {
    return this.element;
  },

  option: function( key, value ) {
    var options = key,
      self = this;

    if ( arguments.length === 0 ) {
      // don't return a reference to the internal hash
      return $.extend( {}, self.options );
    }

    if  (typeof key === "string" ) {
      if ( value === undefined ) {
        return this.options[ key ];
      }
      options = {};
      options[ key ] = value;
    }

    $.each( options, function( key, value ) {
      self._setOption( key, value );
    });

    return self;
  },
  _setOption: function( key, value ) {
    this.options[ key ] = value;

    if ( key === "disabled" ) {
      this.widget()
        [ value ? "addClass" : "removeClass"](
          this.widgetBaseClass + "-disabled" + " " +
          "ui-state-disabled" )
        .attr( "aria-disabled", value );
    }

    return this;
  },

  enable: function() {
    return this._setOption( "disabled", false );
  },
  disable: function() {
    return this._setOption( "disabled", true );
  },

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

    event = $.Event( event );
    event.type = ( type === this.widgetEventPrefix ?
      type :
      this.widgetEventPrefix + type ).toLowerCase();
    data = data || {};

    // 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() );
  }
};

})( jQuery );