/*!
* jQuery UI Widget 1.8rc1
*
* 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) {
        if (!keepData) {
            $("*", 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
            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 " +
				this.namespace + "-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" + " " +
					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());
        }
    };

})(jQuery);