/*
 * jQuery UI Tabs
 *
 * 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($) {
$.widget("ui.tabs", {
init: function() {
this.options.event += '.tabs'; // namespace event
// create tabs
this.tabify(true);
},
setData: function(key, value) {
if ((/^selected/).test(key))
this.select(value);
else {
this.options[key] = value;
this.tabify();
}
},
length: function() {
return this.$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)
};
},
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(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( $panel );
}
// invalid tab href
else
o.disabled.push(i + 1);
});
if (init) {
// attach necessary classes for styling if not present
this.element.addClass(o.navClass);
this.$panels.each(function() {
var $this = $(this);
$this.addClass(o.panelClass);
});
// Selected tab
// use "selected" option or try to retrieve:
// 1. from fragment identifier in url
// 2. from cookie
// 3. from selected class attribute on <li>
if (o.selected === undefined) {
if (location.hash) {
this.$tabs.each(function(i, a) {
if (a.hash == location.hash) {
o.selected = i;
// prevent page scroll to fragment
if ($.browser.msie || $.browser.opera) { // && !o.remote
var $toShow = $(location.hash), toShowId = $toShow.attr('id');
$toShow.attr('id', '');
setTimeout(function() {
$toShow.attr('id', toShowId); // restore id
}, 500);
}
scrollTo(0, 0);
return false; // break
}
});
}
else if (o.cookie) {
var index = parseInt($.cookie('ui-tabs' + $.data(self.element)),10);
if (index && self.$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).show().removeClass(o.hideClass); // use show and remove class to show in any case no matter how it has been hidden before
this.$lis.eq(o.selected).addClass(o.selectedClass);
// seems to be expected behavior that the show callback is fired
var onShow = function() {
self.trigger('show', null,
self.ui(self.$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.$panels = null;
});
}
// disable tabs
for (var i = 0, li; li = this.$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, baseFx = { 'min-width': 0, duration: 1 }, baseDuration = 'normal';
if (o.fx && o.fx.constructor == Array)
hideFx = o.fx[0] || baseFx, showFx = o.fx[1] || baseFx;
else
hideFx = showFx = o.fx || baseFx;
// reset some styles to maintain print style sheets etc.
var resetCSS = { display: '', overflow: '', height: '' };
if (!$.browser.msie) // not in IE to prevent ClearType font issue
resetCSS.opacity = '';
// Hide a tab, animation prevents browser scrolling to fragment,
// $show is optional.
function hideTab(clicked, $hide, $show) {
$hide.animate(hideFx, hideFx.duration || baseDuration, function() { //
$hide.addClass(o.hideClass).css(resetCSS); // maintain flexible height and accessibility in print etc.
if ($.browser.msie && hideFx.opacity)
$hide[0].style.filter = '';
if ($show)
showTab(clicked, $show, $hide);
});
}
// Show a tab, animation prevents browser scrolling to fragment,
// $hide is optional.
function showTab(clicked, $show, $hide) {
if (showFx === baseFx)
$show.css('display', 'block'); // prevent occasionally occuring flicker in Firefox cause by gap between showing and hiding the tab panels
$show.animate(showFx, showFx.duration || baseDuration, function() {
$show.removeClass(o.hideClass).css(resetCSS); // maintain flexible height and accessibility in print etc.
if ($.browser.msie && showFx.opacity)
$show[0].style.filter = '';
// callback
self.trigger('show', null, self.ui(clicked, $show[0]));
});
}
// switch a tab
function switchTab(clicked, $li, $hide, $show) {
/*if (o.bookmarkable && trueClick) { // add to history only if true click occured, not a triggered click
$.ajaxHistory.update(clicked.hash);
}*/
$li.addClass(o.selectedClass)
.siblings().removeClass(o.selectedClass);
hideTab(clicked, $hide, $show);
}
// attach tab event handler, unbind to avoid duplicates from former tabifying...
this.$tabs.unbind('.tabs').bind(o.event, 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 = $(this.hash);
// If tab is already selected and not unselectable or tab disabled or 
// or is already loading or click callback returns false stop here.
// Check if click handler returns false last so that it is not executed
// for a disabled or loading tab!
if (($li.hasClass(o.selectedClass) && !o.unselect)
|| $li.hasClass(o.disabledClass) 
|| $(this).hasClass(o.loadingClass)
|| self.trigger('select', null, self.ui(this, $show[0])) === false
) {
this.blur();
return false;
}
self.options.selected = self.$tabs.index(this);
// if tab may be closed
if (o.unselect) {
if ($li.hasClass(o.selectedClass)) {
self.options.selected = null;
$li.removeClass(o.selectedClass);
self.$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).addClass(o.unselectClass);
showTab(a, $show);
});
this.blur();
return false;
}
}
if (o.cookie)
$.cookie('ui-tabs' + $.data(self.element), self.options.selected, o.cookie);
// stop possibly running animations
self.$panels.stop();
// show new tab
if ($show.length) {
// prevent scrollbar scrolling to 0 and than back in IE7, happens only if bookmarking/history is enabled
/*if ($.browser.msie && o.bookmarkable) {
var showId = this.hash.replace('#', '');
$show.attr('id', '');
setTimeout(function() {
$show.attr('id', showId); // restore id
}, 0);
}*/
var a = this;
self.load(self.$tabs.index(this), $hide.length ? 
function() {
switchTab(a, $li, $hide, $show);
} :
function() {
$li.addClass(o.selectedClass);
showTab(a, $show);
}
);
// Set scrollbar to saved position - need to use timeout with 0 to prevent browser scroll to target of hash
/*var scrollX = window.pageXOffset || document.documentElement && document.documentElement.scrollLeft || document.body.scrollLeft || 0;
var scrollY = window.pageYOffset || document.documentElement && document.documentElement.scrollTop || document.body.scrollTop || 0;
setTimeout(function() {
scrollTo(scrollX, scrollY);
}, 0);*/
} else
throw 'jQuery UI Tabs: Mismatching fragment identifier.';
// Prevent IE from keeping other link focussed when using the back button
// and remove dotted border from clicked link. This is controlled in modern
// browsers via CSS, also blur removes focus from address bar in Firefox
// which can become a usability and annoying problem with tabsRotate.
if ($.browser.msie)
this.blur();
//return o.bookmarkable && !!trueClick; // convert trueClick == undefined to Boolean required in IE
return false;
});
// disable click if event is configured to something else
if (!(/^click/).test(o.event))
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) {
if (typeof index == 'string')
index = this.$tabs.index( this.$tabs.filter('[href$=' + index + ']')[0] );
this.$tabs.eq(index).trigger(this.options.event);
},
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) {
$(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]));
o.ajaxOptions.success && o.ajaxOptions.success(r, s);
// 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);
setTimeout(function() { // timeout is again required in IE, "wait" for id being restored
self.xhr = $.ajax(ajaxOptions);
}, 0);
},
url: function(index, url) {
this.$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.unselectClass,
o.disabledClass, o.panelClass, o.hideClass].join(' '));
});
}
});
$.ui.tabs.defaults = {
// basic setup
unselect: false,
event: 'click',
disabled: [],
cookie: null, // e.g. { expires: 7, path: '/', domain: 'jquery.com', secure: true }
// TODO history: false,
// Ajax
spinner: 'Loading&#8230;',
cache: false,
idPrefix: 'ui-tabs-',
ajaxOptions: {},
// 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 classes
navClass: 'ui-tabs',
selectedClass: 'ui-tabs-current',
unselectClass: 'ui-tabs-unselect',
disabledClass: 'ui-tabs-disabled',
panelClass: 'ui-tabs-panel',
hideClass: 'ui-tabs-hide',
loadingClass: 'ui-tabs-loading'
};
$.ui.tabs.getter = "length";
/*
 * 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, stop);
else
this.$tabs.bind(this.options.event, function() {
stop();
t = self.options.selected;
start();
});
}
// stop interval
else {
stop();
this.$tabs.unbind(this.options.event, stop);
}
}
});
})(jQuery);