/*

 * jQuery UI @VERSION

 *

 * Copyright (c) 2008 AUTHORS.txt (http://ui.jquery.com/about)

 * Dual licensed under the MIT (MIT-LICENSE.txt)

 * and GPL (GPL-LICENSE.txt) licenses.

 *

 * http://docs.jquery.com/UI

 */

;(function($) {



var _remove = $.fn.remove,

	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);

				}

			}

		}

	},



	contains: function(a, b) {

		var safari2 = $.browser.safari && $.browser.version < 522;

	    if (a.contains && !safari2) {

	        return a.contains(b);

	    }

	    if (a.compareDocumentPosition)

	        return !!(a.compareDocumentPosition(b) & 16);

	    while (b = b.parentNode)

	          if (b == a) return true;

	    return false;

	},



	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(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(a, i, m) {

		return $.data(a, m[3]);

	},



	// TODO: add support for object, area

	tabbable: function(a, i, m) {



		var nodeName = a.nodeName.toLowerCase();

		function isVisible(element) {

			return !($(element).is(':hidden') || $(element).parents(':hidden').length);

		}



		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

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.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) {

				return self._setData(key, value);

			})

			.bind('getData.' + name, function(event, 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)

			.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 eventName = (type == this.widgetEventPrefix

			? type : this.widgetEventPrefix + type);

		event = event || $.event.fix({ type: eventName, target: this.element[0] });

		return this.element.triggerHandler(eventName, [event, 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(event) {

				return self._mouseDown(event);

			})

			.bind('click.'+this.widgetName, function(event) {

				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(event) {

		// 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

		if(!$.browser.safari) event.preventDefault();

		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 = true;

			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);