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/*
 * jQuery UI Tabs 1.8.1
 *
 * 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/Tabs
 *
 * Depends:
 *      jquery.ui.core.js
 *      jquery.ui.widget.js
 */
(function($) {

var tabId = 0,
        listId = 0;

$.widget("ui.tabs", {
        options: {
                add: null,
                ajaxOptions: null,
                cache: false,
                cookie: null, // e.g. { expires: 7, path: '/', domain: 'jquery.com', secure: true }
                collapsible: false,
                disable: null,
                disabled: [],
                enable: null,
                event: 'click',
                fx: null, // e.g. { height: 'toggle', opacity: 'toggle', duration: 200 }
                idPrefix: 'ui-tabs-',
                load: null,
                panelTemplate: '<div></div>',
                remove: null,
                select: null,
                show: null,
                spinner: '<em>Loading&#8230;</em>',
                tabTemplate: '<li><a href="#{href}"><span>#{label}</span></a></li>'
        },
        _create: function() {
                this._tabify(true);
        },

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

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

        _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-' + (++listId));
                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.find('ol,ul').eq(0);
                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 || (this.lis.length ? 0 : -1);
                        }
                        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) {
                        $el.css({ display: '' });
                        if (!$.support.opacity && fx.opacity) {
                                $el[0].style.removeAttribute('filter');
                        }
                }

                // Show a tab...
                var showTab = showFx ?
                        function(clicked, $show) {
                                $(clicked).closest('li').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').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');
                                        $hide.addClass('ui-tabs-hide');
                                        resetStyle($hide, hideFx);
                                        self.element.dequeue("tabs");
                                });
                        } :
                        function(clicked, $hide, $show) {
                                self.lis.removeClass('ui-tabs-selected ui-state-active');
                                $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);
                }

                return this;
        },

        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
                        o.selected = 0;
                        $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]));
                return this;
        },

        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]));
                return this;
        },

        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]));
                return this;
        },

        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]));
                }

                return this;
        },

        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');
                return this;
        },

        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) {}
                        },
                        error: function(xhr, s, e) {
                                // take care of tab labels
                                self._cleanup();

                                // callbacks
                                self._trigger('load', null, self._ui(self.anchors[index], self.panels[index]));
                                try {
                                        // Passing index avoid a race condition when this method is
                                        // called after the user has selected another tab.
                                        // Pass the anchor that initiated this request allows
                                        // loadError to manipulate the tab content panel via $(a.hash)
                                        o.ajaxOptions.error(xhr, s, index, a);
                                }
                                catch (e) {}
                        }
                }));

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

                return this;
        },

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

                // "tabs" queue must not contain more than two elements,
                // which are the callbacks for the latest clicked tab...
                this.element.queue("tabs", this.element.queue("tabs").splice(-2, 2));

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

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

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

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

});

$.extend($.ui.tabs, {
        version: '1.8.1'
});

/*
 * 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;
                }

                return this;
        }
});

})(jQuery);