/*

 * jQuery UI @VERSION

 *

 * Copyright (c) 2008 Paul Bakaus (ui.jquery.com)

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

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

 *

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

 */

;(function($) {



/** jQuery core modifications and additions **/



var _remove = $.fn.remove;

$.fn.remove = function() {

	$("*", this).add(this).triggerHandler("remove");

	return _remove.apply(this, arguments );

};



function isVisible(element) {

	function checkStyles(element) {

		var style = element.style;

		return (style.display != 'none' && style.visibility != 'hidden');

	}

	

	var visible = checkStyles(element);

	

	(visible && $.each($.dir(element, 'parentNode'), function() {

		return (visible = checkStyles(this));

	}));

	

	return visible;

}



$.extend($.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();

		

		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)

		);

	}

});



$.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

};



// $.widget is a factory to create jQuery plugins

// taking some boilerplate code out of the plugin code

// created by Scott González and Jörn Zaefferer

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][name] = function(element, options) {

		var self = this;

		

		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(e, key, value) {

				return self._setData(key, value);

			})

			.bind('getData.' + name, function(e, 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);

	},

	

	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');

		}

	},

	

	enable: function() {

		this._setData('disabled', false);

	},

	disable: function() {

		this._setData('disabled', true);

	},

	

	_trigger: function(type, e, data) {

		var eventName = (type == this.widgetEventPrefix

			? type : this.widgetEventPrefix + type);

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

		return this.element.triggerHandler(eventName, [e, data], this.options[type]);

	}

};



$.widget.defaults = {

	disabled: false

};





/** jQuery UI core **/



$.ui = {

	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);

				}

			}

		}	

	},

	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];

	},

	disableSelection: function(el) {

		return $(el)

			.attr('unselectable', 'on')

			.css('MozUserSelect', 'none')

			.bind('selectstart.ui', function() { return false; });

	},

	enableSelection: function(el) {

		return $(el)

			.attr('unselectable', 'off')

			.css('MozUserSelect', '')

			.unbind('selectstart.ui');

	},

	hasScroll: function(e, a) {

		

		//If overflow is hidden, the element might have extra content, but the user wants to hide it

		if ($(e).css('overflow') == 'hidden') { return false; }

		

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

			has = false;

		

		if (e[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

		e[scroll] = 1;

		has = (e[scroll] > 0);

		e[scroll] = 0;

		return has;

	}

};





/** Mouse Interaction Plugin **/



$.ui.mouse = {

	_mouseInit: function() {

		var self = this;

	

		this.element.bind('mousedown.'+this.widgetName, function(e) {

			return self._mouseDown(e);

		});

		

		// 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(e) {

		// we may have missed mouseup (out of window)

		(this._mouseStarted && this._mouseUp(e));

		

		this._mouseDownEvent = e;

		

		var self = this,

			btnIsLeft = (e.which == 1),

			elIsCancel = (typeof this.options.cancel == "string" ? $(e.target).parents().add(e.target).filter(this.options.cancel).length : false);

		if (!btnIsLeft || elIsCancel || !this._mouseCapture(e)) {

			return true;

		}

		

		this.mouseDelayMet = !this.options.delay;

		if (!this.mouseDelayMet) {

			this._mouseDelayTimer = setTimeout(function() {

				self.mouseDelayMet = true;

			}, this.options.delay);

		}

		

		if (this._mouseDistanceMet(e) && this._mouseDelayMet(e)) {

			this._mouseStarted = (this._mouseStart(e) !== false);

			if (!this._mouseStarted) {

				e.preventDefault();

				return true;

			}

		}

		

		// these delegates are required to keep context

		this._mouseMoveDelegate = function(e) {

			return self._mouseMove(e);

		};

		this._mouseUpDelegate = function(e) {

			return self._mouseUp(e);

		};

		$(document)

			.bind('mousemove.'+this.widgetName, this._mouseMoveDelegate)

			.bind('mouseup.'+this.widgetName, this._mouseUpDelegate);

		

		return false;

	},

	

	_mouseMove: function(e) {

		// IE mouseup check - mouseup happened when mouse was out of window

		if ($.browser.msie && !e.button) {

			return this._mouseUp(e);

		}

		

		if (this._mouseStarted) {

			this._mouseDrag(e);

			return false;

		}

		

		if (this._mouseDistanceMet(e) && this._mouseDelayMet(e)) {

			this._mouseStarted =

				(this._mouseStart(this._mouseDownEvent, e) !== false);

			(this._mouseStarted ? this._mouseDrag(e) : this._mouseUp(e));

		}

		

		return !this._mouseStarted;

	},

	

	_mouseUp: function(e) {

		$(document)

			.unbind('mousemove.'+this.widgetName, this._mouseMoveDelegate)

			.unbind('mouseup.'+this.widgetName, this._mouseUpDelegate);

		

		if (this._mouseStarted) {

			this._mouseStarted = false;

			this._mouseStop(e);

		}

		

		return false;

	},

	

	_mouseDistanceMet: function(e) {

		return (Math.max(

				Math.abs(this._mouseDownEvent.pageX - e.pageX),

				Math.abs(this._mouseDownEvent.pageY - e.pageY)

			) >= this.options.distance

		);

	},

	

	_mouseDelayMet: function(e) {

		return this.mouseDelayMet;

	},

	

	// These are placeholder methods, to be overriden by extending plugin

	_mouseStart: function(e) {},

	_mouseDrag: function(e) {},

	_mouseStop: function(e) {},

	_mouseCapture: function(e) { return true; }

};



$.ui.mouse.defaults = {

	cancel: null,

	distance: 1,

	delay: 0

};



})(jQuery);