/*

 * jQuery UI Tabs @VERSION

 *

 * Copyright (c) 2007, 2008 Klaus Hartl (stilbuero.de)

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

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

 *

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

 *

 * Depends:

 *	ui.core.js

 */

(function($) {



$.widget("ui.tabs", {

	_init: function() {

		// create tabs

		this._tabify(true);

	},

	_setData: function(key, value) {

		if ((/^selected/).test(key))

			this.select(value);

		else {

			this.options[key] = value;

			this._tabify();

		}

	},

	length: function() {

		return this.$tabs.length;

	},

	_tabId: function(a) {

		return a.title && a.title.replace(/\s/g, '_').replace(/[^A-Za-z0-9\-_:\.]/g, '')

			|| this.options.idPrefix + $.data(a);

	},

	ui: function(tab, panel) {

		return {

			options: this.options,

			tab: tab,

			panel: panel,

			index: this.$tabs.index(tab)

		};

	},

	_sanitizeSelector: function(hash) {

		return hash.replace(/:/g, '\\:'); // we need this because an id may contain a ":"

	},

	_cookie: function() {

		var cookie = this.cookie || (this.cookie = 'ui-tabs-' + $.data(this.element[0]));

		return $.cookie.apply(null, [cookie].concat($.makeArray(arguments)));

	},

	_tabify: function(init) {

		

		this.$lis = $('li:has(a[href])', this.element);

		this.$tabs = this.$lis.map(function() { return $('a', this)[0]; });

		this.$panels = $([]);

		

		var self = this, o = this.options;

		

		this.$tabs.each(function(i, a) {

			// inline tab

			if (a.hash && a.hash.replace('#', '')) // Safari 2 reports '#' for an empty hash

				self.$panels = self.$panels.add(self._sanitizeSelector(a.hash));

			// remote tab

			else if ($(a).attr('href') != '#') { // prevent loading the page itself if href is just "#"

				$.data(a, 'href.tabs', a.href); // required for restore on destroy

				$.data(a, 'load.tabs', a.href); // mutable

				var id = self._tabId(a);

				a.href = '#' + id;

				var $panel = $('#' + id);

				if (!$panel.length) {

					$panel = $(o.panelTemplate).attr('id', id).addClass(o.panelClass)

						.insertAfter(self.$panels[i - 1] || self.element);

					$panel.data('destroy.tabs', true);

				}

				self.$panels = self.$panels.add($panel);

			}

			// invalid tab href

			else

				o.disabled.push(i + 1);

		});

		

		// initialization from scratch

		if (init) {

			

			// attach necessary classes for styling if not present

			this.element.addClass(o.navClass);

			this.$panels.addClass(o.panelClass);

			

			// Selected tab

			// use "selected" option or try to retrieve:

			// 1. from fragment identifier in url

			// 2. from cookie

			// 3. from selected class attribute on <li>

			if (o.selected === undefined) {

				if (location.hash) {

					this.$tabs.each(function(i, a) {

						if (a.hash == location.hash) {

							o.selected = i;

							return false; // break

						}

					});

				}

				else if (o.cookie) {

					var index = parseInt(self._cookie(), 10);

					if (index && self.$tabs[index]) o.selected = index;

				}

				else if (self.$lis.filter('.' + o.selectedClass).length)

					o.selected = self.$lis.index( self.$lis.filter('.' + o.selectedClass)[0] );

			}

			o.selected = o.selected === null || o.selected !== undefined ? o.selected : 0; // first tab selected by default

			

			// Take disabling tabs via class attribute from HTML

			// into account and update option properly.

			// A selected tab cannot become disabled.

			o.disabled = $.unique(o.disabled.concat(

				$.map(this.$lis.filter('.' + o.disabledClass),

					function(n, i) { return self.$lis.index(n); } )

			)).sort();

			if ($.inArray(o.selected, o.disabled) != -1)

				o.disabled.splice($.inArray(o.selected, o.disabled), 1);

			

			// highlight selected tab

			this.$panels.addClass(o.hideClass);

			this.$lis.removeClass(o.selectedClass);

			if (o.selected !== null) {

				this.$panels.eq(o.selected).removeClass(o.hideClass);

				var classes = [o.selectedClass];

				if (o.deselectable) classes.push(o.deselectableClass);

				this.$lis.eq(o.selected).addClass(classes.join(' '));

				

				// seems to be expected behavior that the show callback is fired

				var onShow = function() {

					self._trigger('show', null,

						self.ui(self.$tabs[o.selected], self.$panels[o.selected]));

				};

				

				// load if remote tab

				if ($.data(this.$tabs[o.selected], 'load.tabs'))

					this.load(o.selected, onShow);

				// just trigger show event

				else onShow();

			}

			

			// clean up to avoid memory leaks in certain versions of IE 6

			$(window).bind('unload', function() {

				self.$tabs.unbind('.tabs');

				self.$lis = self.$tabs = self.$panels = null;

			});

			

		}

		// update selected after add/remove

		else

			o.selected = this.$lis.index( this.$lis.filter('.' + o.selectedClass)[0] );

		

		// set or update cookie after init and add/remove respectively

		if (o.cookie) this._cookie(o.selected, o.cookie);

		

		// disable tabs

		for (var i = 0, li; li = this.$lis[i]; i++)

			$(li)[$.inArray(i, o.disabled) != -1 && !$(li).hasClass(o.selectedClass) ? 'addClass' : 'removeClass'](o.disabledClass);

		

		// reset cache if switching from cached to not cached

		if (o.cache === false) this.$tabs.removeData('cache.tabs');

		

		// set up animations

		var hideFx, showFx;

		if (o.fx) {

			if (o.fx.constructor == Array) {

				hideFx = o.fx[0];

				showFx = o.fx[1];

			}

			else hideFx = showFx = o.fx;

		}

		

		// Reset certain styles left over from animation

		// and prevent IE's ClearType bug...

		function resetStyle($el, fx) {

			$el.css({ display: '' });

			if ($.browser.msie && fx.opacity) $el[0].style.removeAttribute('filter');

		}



		// Show a tab...

		var showTab = showFx ?

			function(clicked, $show) {

				$show.animate(showFx, showFx.duration || 'normal', function() {

					$show.removeClass(o.hideClass);

					resetStyle($show, showFx);

					self._trigger('show', null, self.ui(clicked, $show[0]));

				});

			} :

			function(clicked, $show) {

				$show.removeClass(o.hideClass);

				self._trigger('show', null, self.ui(clicked, $show[0]));

			};

		

		// Hide a tab, $show is optional...

		var hideTab = hideFx ? 

			function(clicked, $hide, $show) {

				$hide.animate(hideFx, hideFx.duration || 'normal', function() {

					$hide.addClass(o.hideClass);

					resetStyle($hide, hideFx);

					if ($show) showTab(clicked, $show, $hide);

				});

			} :

			function(clicked, $hide, $show) {

				$hide.addClass(o.hideClass);

				if ($show) showTab(clicked, $show);

			};

		

		// Switch a tab...

		function switchTab(clicked, $li, $hide, $show) {

			var classes = [o.selectedClass];

			if (o.deselectable) classes.push(o.deselectableClass);

			$li.addClass(classes.join(' ')).siblings().removeClass(classes.join(' '));

			hideTab(clicked, $hide, $show);

		}

		

		// attach tab event handler, unbind to avoid duplicates from former tabifying...

		this.$tabs.unbind('.tabs').bind(o.event + '.tabs', function() {

			

			//var trueClick = e.clientX; // add to history only if true click occured, not a triggered click

			var $li = $(this).parents('li:eq(0)'),

				$hide = self.$panels.filter(':visible'),

				$show = $(self._sanitizeSelector(this.hash));

			

			// If tab is already selected and not deselectable or tab disabled or 

			// or is already loading or click callback returns false stop here.

			// Check if click handler returns false last so that it is not executed

			// for a disabled or loading tab!

			if (($li.hasClass(o.selectedClass) && !o.deselectable)

				|| $li.hasClass(o.disabledClass)

				|| $(this).hasClass(o.loadingClass)

				|| self._trigger('select', null, self.ui(this, $show[0])) === false

				) {

				this.blur();

				return false;

			}

			

			o.selected = self.$tabs.index(this);

			

			// if tab may be closed

			if (o.deselectable) {

				if ($li.hasClass(o.selectedClass)) {

					self.options.selected = null;

					$li.removeClass([o.selectedClass, o.deselectableClass].join(' '));

					self.$panels.stop();

					hideTab(this, $hide);

					this.blur();

					return false;

				} else if (!$hide.length) {

					self.$panels.stop();

					var a = this;

					self.load(self.$tabs.index(this), function() {

						$li.addClass([o.selectedClass, o.deselectableClass].join(' '));

						showTab(a, $show);

					});

					this.blur();

					return false;

				}

			}

			

			if (o.cookie) self._cookie(o.selected, o.cookie);

			

			// stop possibly running animations

			self.$panels.stop();

			

			// show new tab

			if ($show.length) {

				var a = this;

				self.load(self.$tabs.index(this), $hide.length ? 

					function() {

						switchTab(a, $li, $hide, $show);

					} :

					function() {

						$li.addClass(o.selectedClass);

						showTab(a, $show);

					}

				);

			} else

				throw 'jQuery UI Tabs: Mismatching fragment identifier.';

				

			// Prevent IE from keeping other link focussed when using the back button

			// and remove dotted border from clicked link. This is controlled via CSS

			// in modern browsers; blur() removes focus from address bar in Firefox

			// which can become a usability and annoying problem with tabs('rotate').

			if ($.browser.msie) this.blur();

			

			return false;

			

		});

		

		// disable click if event is configured to something else

		if (o.event != 'click') this.$tabs.bind('click.tabs', function(){return false;});

		

	},

	add: function(url, label, index) {

		if (index == undefined)

			index = this.$tabs.length; // append by default

		

		var o = this.options;

		var $li = $(o.tabTemplate.replace(/#\{href\}/g, url).replace(/#\{label\}/g, label));

		$li.data('destroy.tabs', true);

		

		var id = url.indexOf('#') == 0 ? url.replace('#', '') : this._tabId( $('a:first-child', $li)[0] );

		

		// try to find an existing element before creating a new one

		var $panel = $('#' + id);

		if (!$panel.length) {

			$panel = $(o.panelTemplate).attr('id', id)

				.addClass(o.hideClass)

				.data('destroy.tabs', true);

		}

		$panel.addClass(o.panelClass);

		if (index >= this.$lis.length) {

			$li.appendTo(this.element);

			$panel.appendTo(this.element[0].parentNode);

		} else {

			$li.insertBefore(this.$lis[index]);

			$panel.insertBefore(this.$panels[index]);

		}

		

		o.disabled = $.map(o.disabled,

			function(n, i) { return n >= index ? ++n : n });

		

		this._tabify();

		

		if (this.$tabs.length == 1) {

			$li.addClass(o.selectedClass);

			$panel.removeClass(o.hideClass);

			var href = $.data(this.$tabs[0], 'load.tabs');

			if (href)

				this.load(index, href);

		}

		

		// callback

		this._trigger('add', null, this.ui(this.$tabs[index], this.$panels[index]));

	},

	remove: function(index) {

		var o = this.options, $li = this.$lis.eq(index).remove(),

			$panel = this.$panels.eq(index).remove();

		

		// If selected tab was removed focus tab to the right or

		// in case the last tab was removed the tab to the left.

		if ($li.hasClass(o.selectedClass) && this.$tabs.length > 1)

			this.select(index + (index + 1 < this.$tabs.length ? 1 : -1));

		

		o.disabled = $.map($.grep(o.disabled, function(n, i) { return n != index; }),

			function(n, i) { return n >= index ? --n : n });

		

		this._tabify();

		

		// callback

		this._trigger('remove', null, this.ui($li.find('a')[0], $panel[0]));

	},

	enable: function(index) {

		var o = this.options;

		if ($.inArray(index, o.disabled) == -1)

			return;

		

		var $li = this.$lis.eq(index).removeClass(o.disabledClass);

		if ($.browser.safari) { // fix disappearing tab (that used opacity indicating disabling) after enabling in Safari 2...

			$li.css('display', 'inline-block');

			setTimeout(function() {

				$li.css('display', 'block');

			}, 0);

		}

		

		o.disabled = $.grep(o.disabled, function(n, i) { return n != index; });

		

		// callback

		this._trigger('enable', null, this.ui(this.$tabs[index], this.$panels[index]));

	},

	disable: function(index) {

		var self = this, o = this.options;

		if (index != o.selected) { // cannot disable already selected tab

			this.$lis.eq(index).addClass(o.disabledClass);

			

			o.disabled.push(index);

			o.disabled.sort();

			

			// callback

			this._trigger('disable', null, this.ui(this.$tabs[index], this.$panels[index]));

		}

	},

	select: function(index) {

		// TODO make null as argument work

		if (typeof index == 'string')

			index = this.$tabs.index( this.$tabs.filter('[href$=' + index + ']')[0] );

		this.$tabs.eq(index).trigger(this.options.event + '.tabs');

	},

	load: function(index, callback) { // callback is for internal usage only

		

		var self = this, o = this.options, $a = this.$tabs.eq(index), a = $a[0],

				bypassCache = callback == undefined || callback === false, url = $a.data('load.tabs');

		

		callback = callback || function() {};

		

		// no remote or from cache - just finish with callback

		if (!url || !bypassCache && $.data(a, 'cache.tabs')) {

			callback();

			return;

		}

		

		// load remote from here on

		

		var inner = function(parent) {

			var $parent = $(parent), $inner = $parent.find('*:last');

			return $inner.length && $inner.is(':not(img)') && $inner || $parent;

		};

		var cleanup = function() {

			self.$tabs.filter('.' + o.loadingClass).removeClass(o.loadingClass)

					.each(function() {

						if (o.spinner)

							inner(this).parent().html(inner(this).data('label.tabs'));

					});

			self.xhr = null;

		};

		

		if (o.spinner) {

			var label = inner(a).html();

			inner(a).wrapInner('<em></em>')

				.find('em').data('label.tabs', label).html(o.spinner);

		}

		

		var ajaxOptions = $.extend({}, o.ajaxOptions, {

			url: url,

			success: function(r, s) {

				$(self._sanitizeSelector(a.hash)).html(r);

				cleanup();

				

				if (o.cache)

					$.data(a, 'cache.tabs', true); // if loaded once do not load them again

				

				// callbacks

				self._trigger('load', null, self.ui(self.$tabs[index], self.$panels[index]));

				try {

					o.ajaxOptions.success(r, s);

				}

				catch (e) {}

				

				// This callback is required because the switch has to take

				// place after loading has completed. Call last in order to 

				// fire load before show callback...

				callback();

			}

		});

		if (this.xhr) {

			// terminate pending requests from other tabs and restore tab label

			this.xhr.abort();

			cleanup();

		}

		$a.addClass(o.loadingClass);

		self.xhr = $.ajax(ajaxOptions);

	},

	url: function(index, url) {

		this.$tabs.eq(index).removeData('cache.tabs').data('load.tabs', url);

	},

	destroy: function() {

		var o = this.options;

		this.element.unbind('.tabs')

			.removeClass(o.navClass).removeData('tabs');

		this.$tabs.each(function() {

			var href = $.data(this, 'href.tabs');

			if (href)

				this.href = href;

			var $this = $(this).unbind('.tabs');

			$.each(['href', 'load', 'cache'], function(i, prefix) {

				$this.removeData(prefix + '.tabs');

			});

		});

		this.$lis.add(this.$panels).each(function() {

			if ($.data(this, 'destroy.tabs'))

				$(this).remove();

			else

				$(this).removeClass([o.selectedClass, o.deselectableClass,

					o.disabledClass, o.panelClass, o.hideClass].join(' '));

		});

		if (o.cookie)

			this._cookie(null, o.cookie);

	}

});



$.extend($.ui.tabs, {

	version: '@VERSION',

	getter: 'length',

	defaults: {

		// basic setup

		deselectable: false,

		event: 'click',

		disabled: [],

		cookie: null, // e.g. { expires: 7, path: '/', domain: 'jquery.com', secure: true }

		// Ajax

		spinner: 'Loading&#8230;',

		cache: false,

		idPrefix: 'ui-tabs-',

		ajaxOptions: null,

		// animations

		fx: null, // e.g. { height: 'toggle', opacity: 'toggle', duration: 200 }

		// templates

		tabTemplate: '<li><a href="#{href}"><span>#{label}</span></a></li>',

		panelTemplate: '<div></div>',

		// CSS class names

		navClass: 'ui-tabs-nav',

		selectedClass: 'ui-tabs-selected',

		deselectableClass: 'ui-tabs-deselectable',

		disabledClass: 'ui-tabs-disabled',

		panelClass: 'ui-tabs-panel',

		hideClass: 'ui-tabs-hide',

		loadingClass: 'ui-tabs-loading'

	}

});



/*

 * Tabs Extensions

 */



/*

 * Rotate

 */

$.extend($.ui.tabs.prototype, {

	rotation: null,

	rotate: function(ms, continuing) {

		

		continuing = continuing || false;

		

		var self = this, t = this.options.selected;

		

		function start() {

			self.rotation = setInterval(function() {

				t = ++t < self.$tabs.length ? t : 0;

				self.select(t);

			}, ms);

		}

		

		function stop(e) {

			if (!e || e.clientX) { // only in case of a true click

				clearInterval(self.rotation);

			}

		}

		

		// start interval

		if (ms) {

			start();

			if (!continuing)

				this.$tabs.bind(this.options.event + '.tabs', stop);

			else

				this.$tabs.bind(this.options.event + '.tabs', function() {

					stop();

					t = self.options.selected;

					start();

				});

		}

		// stop interval

		else {

			stop();

			this.$tabs.unbind(this.options.event + '.tabs', stop);

		}

	}

});



})(jQuery);