/*!
2	 * jQuery UI Widget @VERSION
3	 *
4	 * Copyright (c) 2009 AUTHORS.txt (http://jqueryui.com/about)
5	 * Dual licensed under the MIT (MIT-LICENSE.txt)
6	 * and GPL (GPL-LICENSE.txt) licenses.
7	 *
8	 * http://docs.jquery.com/UI/Widget
9	 */
	(function($) {
	
	var _remove = $.fn.remove;
	
	$.fn.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);
	};
	
	$.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
	                (arguments.length && this._widgetInit(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
	        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;
	                }
	
	                (isMethodCall
	                        ? this.each(function() {
	                                var instance = $.data(this, name),
	                                        methodValue = (instance && $.isFunction(instance[options])
	                                                ? instance[options].apply(instance, args)
	                                                : instance);
	                                if (methodValue !== instance && methodValue !== undefined) {
	                                        returnValue = methodValue;
	                                        return false;
	                                }
	                        })
	                        : this.each(function() {
	                                ($.data(this, name) || $.data(this, name, new object(options, this)));
	                        }));
	
	                return returnValue;
	        };
	};
	
	$.Widget = function(options, element) {
	        // allow instantiation without initializing for simple inheritance
	        (arguments.length && this._widgetInit(options, element));
	};
	
	$.Widget.prototype = {
	        widgetName: 'widget',
	        widgetEventPrefix: '',
	        options: {
	                disabled: false
	        },
	        _widgetInit: function(options, element) {
	                // $.widget.bridge stores the plugin instance, but we do it anyway
	                // so that it's stored even before the _init function runs
	                this.element = $(element).data(this.widgetName, this);
	                this.options = $.extend(true, {},
	                        this.options,
	                        // DEPRECATED: move defaults to prototype.options
	                        $[this.namespace][this.widgetName].defaults,
	                        $.metadata && $.metadata.get(element)[this.widgetName],
	                        options);
	
	                // TODO: use bind's scope option when moving to jQuery 1.4
	                var self = this;
	                this.element.bind('remove.' + this.widgetName, function() {
	                        self.destroy();
	                });
	
	                (this._init && this._init(options, element));
	        },
	
	        destroy: function() {
	                this.element
	                        .unbind('.' + this.widgetName)
	                        .removeData(this.widgetName)
	                        .removeAttr('aria-disabled')
	                        .removeClass(
	                                this.widgetBaseClass + '-disabled ' +
	                                this.namespace + '-state-disabled');
	        },
	
	        option: function(key, value) {
	                var options = key,
	                        self = this;
	
	                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.element
	                                [value ? 'addClass' : 'removeClass'](
	                                        this.widgetBaseClass + '-disabled' + ' ' +
	                                        this.namespace + '-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());
	        }
	};
	
	// DEPRECATED: use the plugin's parent widget instead of $.widget
	$.widget.prototype = $.Widget.prototype;
	       
	})(jQuery);