/*
* jQuery UI Tabs 1.7.2
*
* Copyright (c) 2009 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/Tabs
*
* Depends:
*	ui.core.js
*/
(function($) {

	$.widget("ui.tabs", {

		_init: function() {
			if (this.options.deselectable !== undefined) {
				this.options.collapsible = this.options.deselectable;
			}
			this._tabify(true);
		},

		_setData: function(key, value) {
			if (key == 'selected') {
				if (this.options.collapsible && value == this.options.selected) {
					return;
				}
				this.select(value);
			}
			else {
				this.options[key] = value;
				if (key == 'deselectable') {
					this.options.collapsible = value;
				}
				this._tabify();
			}
		},

		_tabId: function(a) {
			return a.title && a.title.replace(/\s/g, '_').replace(/[^A-Za-z0-9\-_:\.]/g, '') ||
			this.options.idPrefix + $.data(a);
		},

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

		_cookie: function() {
			var cookie = this.cookie || (this.cookie = this.options.cookie.name || 'ui-tabs-' + $.data(this.list[0]));
			return $.cookie.apply(null, [cookie].concat($.makeArray(arguments)));
		},

		_ui: function(tab, panel) {
			return {
				tab: tab,
				panel: panel,
				index: this.anchors.index(tab)
			};
		},

		_cleanup: function() {
			// restore all former loading tabs labels
			this.lis.filter('.ui-state-processing').removeClass('ui-state-processing')
				.find('span:data(label.tabs)')
				.each(function() {
					var el = $(this);
					el.html(el.data('label.tabs')).removeData('label.tabs');
				});
		},

		_tabify: function(init) {

			this.list = this.element.children('ul:first');
			this.lis = $('li:has(a[href])', this.list);
			this.anchors = this.lis.map(function() { return $('a', this)[0]; });
			this.panels = $([]);

			var self = this, o = this.options;

			var fragmentId = /^#.+/; // Safari 2 reports '#' for an empty hash
			this.anchors.each(function(i, a) {
				var href = $(a).attr('href');

				// For dynamically created HTML that contains a hash as href IE < 8 expands
				// such href to the full page url with hash and then misinterprets tab as ajax.
				// Same consideration applies for an added tab with a fragment identifier
				// since a[href=#fragment-identifier] does unexpectedly not match.
				// Thus normalize href attribute...
				var hrefBase = href.split('#')[0], baseEl;
				if (hrefBase && (hrefBase === location.toString().split('#')[0] ||
					(baseEl = $('base')[0]) && hrefBase === baseEl.href)) {
					href = a.hash;
					a.href = href;
				}

				// inline tab
				if (fragmentId.test(href)) {
					self.panels = self.panels.add(self._sanitizeSelector(href));
				}

				// remote tab
				else if (href != '#') { // prevent loading the page itself if href is just "#"
					$.data(a, 'href.tabs', href); // required for restore on destroy

					// TODO until #3808 is fixed strip fragment identifier from url
					// (IE fails to load from such url)
					$.data(a, 'load.tabs', href.replace(/#.*$/, '')); // mutable data

					var id = self._tabId(a);
					a.href = '#' + id;
					var $panel = $('#' + id);
					if (!$panel.length) {
						$panel = $(o.panelTemplate).attr('id', id).addClass('ui-tabs-panel ui-widget-content ui-corner-bottom')
						.insertAfter(self.panels[i - 1] || self.list);
						$panel.data('destroy.tabs', true);
					}
					self.panels = self.panels.add($panel);
				}

				// invalid tab href
				else {
					o.disabled.push(i);
				}
			});

			// initialization from scratch
			if (init) {

				// attach necessary classes for styling
				this.element.addClass('ui-tabs ui-widget ui-widget-content ui-corner-all');
				this.list.addClass('ui-tabs-nav ui-helper-reset ui-helper-clearfix ui-widget-header ui-corner-all');
				this.lis.addClass('ui-state-default ui-corner-top');
				this.panels.addClass('ui-tabs-panel ui-widget-content ui-corner-bottom');

				// 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.anchors.each(function(i, a) {
							if (a.hash == location.hash) {
								o.selected = i;
								return false; // break
							}
						});
					}
					if (typeof o.selected != 'number' && o.cookie) {
						o.selected = parseInt(self._cookie(), 10);
					}
					if (typeof o.selected != 'number' && this.lis.filter('.ui-tabs-selected').length) {
						o.selected = this.lis.index(this.lis.filter('.ui-tabs-selected'));
					}
					o.selected = o.selected || 0;
				}
				else if (o.selected === null) { // usage of null is deprecated, TODO remove in next release
					o.selected = -1;
				}

				// sanity check - default to first tab...
				o.selected = ((o.selected >= 0 && this.anchors[o.selected]) || o.selected < 0) ? o.selected : 0;

				// 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('.ui-state-disabled'),
					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('ui-tabs-hide');
				this.lis.removeClass('ui-tabs-selected ui-state-active');
				if (o.selected >= 0 && this.anchors.length) { // check for length avoids error when initializing empty list
					this.panels.eq(o.selected).removeClass('ui-tabs-hide');
					this.lis.eq(o.selected).addClass('ui-tabs-selected ui-state-active');

					// seems to be expected behavior that the show callback is fired
					self.element.queue("tabs", function() {
						self._trigger('show', null, self._ui(self.anchors[o.selected], self.panels[o.selected]));
					});

					this.load(o.selected);
				}

				// clean up to avoid memory leaks in certain versions of IE 6
				$(window).bind('unload', function() {
					self.lis.add(self.anchors).unbind('.tabs');
					self.lis = self.anchors = self.panels = null;
				});

			}
			// update selected after add/remove
			else {
				o.selected = this.lis.index(this.lis.filter('.ui-tabs-selected'));
			}

			// update collapsible
			this.element[o.collapsible ? 'addClass' : 'removeClass']('ui-tabs-collapsible');

			// 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('ui-tabs-selected') ? 'addClass' : 'removeClass']('ui-state-disabled');
			}

			// reset cache if switching from cached to not cached
			if (o.cache === false) {
				this.anchors.removeData('cache.tabs');
			}

			// remove all handlers before, tabify may run on existing tabs after add or option change
			this.lis.add(this.anchors).unbind('.tabs');

			if (o.event != 'mouseover') {
				var addState = function(state, el) {
					if (el.is(':not(.ui-state-disabled)')) {
						el.addClass('ui-state-' + state);
					}
				};
				var removeState = function(state, el) {
					el.removeClass('ui-state-' + state);
				};
				this.lis.bind('mouseover.tabs', function() {
					addState('hover', $(this));
				});
				this.lis.bind('mouseout.tabs', function() {
					removeState('hover', $(this));
				});
				this.anchors.bind('focus.tabs', function() {
					addState('focus', $(this).closest('li'));
				});
				this.anchors.bind('blur.tabs', function() {
					removeState('focus', $(this).closest('li'));
				});
			}

			// set up animations
			var hideFx, showFx;
			if (o.fx) {
				if ($.isArray(o.fx)) {
					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) {
				$(clicked).closest('li').removeClass('ui-state-default').addClass('ui-tabs-selected ui-state-active');
				$show.hide().removeClass('ui-tabs-hide') // avoid flicker that way
					.animate(showFx, showFx.duration || 'normal', function() {
						resetStyle($show, showFx);
						self._trigger('show', null, self._ui(clicked, $show[0]));
					});
			} :
			function(clicked, $show) {
				$(clicked).closest('li').removeClass('ui-state-default').addClass('ui-tabs-selected ui-state-active');
				$show.removeClass('ui-tabs-hide');
				self._trigger('show', null, self._ui(clicked, $show[0]));
			};

			// Hide a tab, $show is optional...
			var hideTab = hideFx ?
			function(clicked, $hide) {
				$hide.animate(hideFx, hideFx.duration || 'normal', function() {
					self.lis.removeClass('ui-tabs-selected ui-state-active').addClass('ui-state-default');
					$hide.addClass('ui-tabs-hide');
					resetStyle($hide, hideFx);
					self.element.dequeue("tabs");
				});
			} :
			function(clicked, $hide, $show) {
				self.lis.removeClass('ui-tabs-selected ui-state-active').addClass('ui-state-default');
				$hide.addClass('ui-tabs-hide');
				self.element.dequeue("tabs");
			};

			// attach tab event handler, unbind to avoid duplicates from former tabifying...
			this.anchors.bind(o.event + '.tabs', function() {
				var el = this, $li = $(this).closest('li'), $hide = self.panels.filter(':not(.ui-tabs-hide)'),
					$show = $(self._sanitizeSelector(this.hash));

				// If tab is already selected and not collapsible 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('ui-tabs-selected') && !o.collapsible) ||
				$li.hasClass('ui-state-disabled') ||
				$li.hasClass('ui-state-processing') ||
				self._trigger('select', null, self._ui(this, $show[0])) === false) {
					this.blur();
					return false;
				}

				o.selected = self.anchors.index(this);

				self.abort();

				// if tab may be closed
				if (o.collapsible) {
					if ($li.hasClass('ui-tabs-selected')) {
						o.selected = -1;

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

						self.element.queue("tabs", function() {
							hideTab(el, $hide);
						}).dequeue("tabs");

						this.blur();
						return false;
					}
					else if (!$hide.length) {
						if (o.cookie) {
							self._cookie(o.selected, o.cookie);
						}

						self.element.queue("tabs", function() {
							showTab(el, $show);
						});

						self.load(self.anchors.index(this)); // TODO make passing in node possible, see also http://dev.jqueryui.com/ticket/3171

						this.blur();
						return false;
					}
				}

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

				// show new tab
				if ($show.length) {
					if ($hide.length) {
						self.element.queue("tabs", function() {
							hideTab(el, $hide);
						});
					}
					self.element.queue("tabs", function() {
						showTab(el, $show);
					});

					self.load(self.anchors.index(this));
				}
				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();
				}

			});

			// disable click in any case
			this.anchors.bind('click.tabs', function() { return false; });

		},

		destroy: function() {
			var o = this.options;

			this.abort();

			this.element.unbind('.tabs')
			.removeClass('ui-tabs ui-widget ui-widget-content ui-corner-all ui-tabs-collapsible')
			.removeData('tabs');

			this.list.removeClass('ui-tabs-nav ui-helper-reset ui-helper-clearfix ui-widget-header ui-corner-all');

			this.anchors.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.unbind('.tabs').add(this.panels).each(function() {
				if ($.data(this, 'destroy.tabs')) {
					$(this).remove();
				}
				else {
					$(this).removeClass([
					'ui-state-default',
					'ui-corner-top',
					'ui-tabs-selected',
					'ui-state-active',
					'ui-state-hover',
					'ui-state-focus',
					'ui-state-disabled',
					'ui-tabs-panel',
					'ui-widget-content',
					'ui-corner-bottom',
					'ui-tabs-hide'
				].join(' '));
				}
			});

			if (o.cookie) {
				this._cookie(null, o.cookie);
			}
		},

		add: function(url, label, index) {
			if (index === undefined) {
				index = this.anchors.length; // append by default
			}

			var self = this, o = this.options,
			$li = $(o.tabTemplate.replace(/#\{href\}/g, url).replace(/#\{label\}/g, label)),
			id = !url.indexOf('#') ? url.replace('#', '') : this._tabId($('a', $li)[0]);

			$li.addClass('ui-state-default ui-corner-top').data('destroy.tabs', true);

			// try to find an existing element before creating a new one
			var $panel = $('#' + id);
			if (!$panel.length) {
				$panel = $(o.panelTemplate).attr('id', id).data('destroy.tabs', true);
			}
			$panel.addClass('ui-tabs-panel ui-widget-content ui-corner-bottom ui-tabs-hide');

			if (index >= this.lis.length) {
				$li.appendTo(this.list);
				$panel.appendTo(this.list[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.anchors.length == 1) { // after tabify
				$li.addClass('ui-tabs-selected ui-state-active');
				$panel.removeClass('ui-tabs-hide');
				this.element.queue("tabs", function() {
					self._trigger('show', null, self._ui(self.anchors[0], self.panels[0]));
				});

				this.load(0);
			}

			// callback
			this._trigger('add', null, this._ui(this.anchors[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('ui-tabs-selected') && this.anchors.length > 1) {
				this.select(index + (index + 1 < this.anchors.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;
			}

			this.lis.eq(index).removeClass('ui-state-disabled');
			o.disabled = $.grep(o.disabled, function(n, i) { return n != index; });

			// callback
			this._trigger('enable', null, this._ui(this.anchors[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('ui-state-disabled');

				o.disabled.push(index);
				o.disabled.sort();

				// callback
				this._trigger('disable', null, this._ui(this.anchors[index], this.panels[index]));
			}
		},

		select: function(index) {
			if (typeof index == 'string') {
				index = this.anchors.index(this.anchors.filter('[href$=' + index + ']'));
			}
			else if (index === null) { // usage of null is deprecated, TODO remove in next release
				index = -1;
			}
			if (index == -1 && this.options.collapsible) {
				index = this.options.selected;
			}

			this.anchors.eq(index).trigger(this.options.event + '.tabs');
		},

		load: function(index) {
			var self = this, o = this.options, a = this.anchors.eq(index)[0], url = $.data(a, 'load.tabs');

			this.abort();

			// not remote or from cache
			if (!url || this.element.queue("tabs").length !== 0 && $.data(a, 'cache.tabs')) {
				this.element.dequeue("tabs");
				return;
			}

			// load remote from here on
			this.lis.eq(index).addClass('ui-state-processing');

			if (o.spinner) {
				var span = $('span', a);
				span.data('label.tabs', span.html()).html(o.spinner);
			}

			this.xhr = $.ajax($.extend({}, o.ajaxOptions, {
				url: url,
				success: function(r, s) {
					$(self._sanitizeSelector(a.hash)).html(r);

					// take care of tab labels
					self._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.anchors[index], self.panels[index]));
					try {
						o.ajaxOptions.success(r, s);
					}
					catch (e) { }

					// last, so that load event is fired before show...
					self.element.dequeue("tabs");
				}
			}));
		},

		abort: function() {
			// stop possibly running animations
			this.element.queue([]);
			this.panels.stop(false, true);

			// terminate pending requests from other tabs
			if (this.xhr) {
				this.xhr.abort();
				delete this.xhr;
			}

			// take care of tab labels
			this._cleanup();

		},

		url: function(index, url) {
			this.anchors.eq(index).removeData('cache.tabs').data('load.tabs', url);
		},

		length: function() {
			return this.anchors.length;
		}

	});

	$.extend($.ui.tabs, {
		version: '1.7.2',
		getter: 'length',
		defaults: {
			ajaxOptions: null,
			cache: false,
			cookie: null, // e.g. { expires: 7, path: '/', domain: 'jquery.com', secure: true }
			collapsible: false,
			disabled: [],
			event: 'click',
			fx: null, // e.g. { height: 'toggle', opacity: 'toggle', duration: 200 }
			idPrefix: 'ui-tabs-',
			panelTemplate: '<div></div>',
			spinner: '<em>Loading&#8230;</em>',
			tabTemplate: '<li><a href="#{href}"><span>#{label}</span></a></li>'
		}
	});

	/*
	* Tabs Extensions
	*/

	/*
	* Rotate
	*/
	$.extend($.ui.tabs.prototype, {
		rotation: null,
		rotate: function(ms, continuing) {

			var self = this, o = this.options;

			var rotate = self._rotate || (self._rotate = function(e) {
				clearTimeout(self.rotation);
				self.rotation = setTimeout(function() {
					var t = o.selected;
					self.select(++t < self.anchors.length ? t : 0);
				}, ms);

				if (e) {
					e.stopPropagation();
				}
			});

			var stop = self._unrotate || (self._unrotate = !continuing ?
			function(e) {
				if (e.clientX) { // in case of a true click
					self.rotate(null);
				}
			} :
			function(e) {
				t = o.selected;
				rotate();
			});

			// start rotation
			if (ms) {
				this.element.bind('tabsshow', rotate);
				this.anchors.bind(o.event + '.tabs', stop);
				rotate();
			}
			// stop rotation
			else {
				clearTimeout(self.rotation);
				this.element.unbind('tabsshow', rotate);
				this.anchors.unbind(o.event + '.tabs', stop);
				delete this._rotate;
				delete this._unrotate;
			}
		}
	});

})(jQuery);