var Tab = function (element) {
this.element = $(element)
}
Tab.prototype = {
constructor: Tab
, show: function () {
var $this = this.element
, $ul = $this.closest('ul:not(.dropdown-menu)')
, selector = $this.attr('data-target')
, previous
, $target
, e
if (!selector) {
selector = $this.attr('href')
selector = selector && selector.replace(/.*(?=#[^\s]*$)/, '') //strip for ie7
}
if ( $this.parent('li').hasClass('active') ) return
previous = $ul.find('.active:last a')[0]
e = $.Event('show', {
relatedTarget: previous
})
$this.trigger(e)
if (e.isDefaultPrevented()) return
$target = $(selector)
this.activate($this.parent('li'), $ul)
this.activate($target, $target.parent(), function () {
$this.trigger({
type: 'shown'
, relatedTarget: previous
})
})
}
, activate: function ( element, container, callback) {
var $active = container.find('> .active')
, transition = callback
&& $.support.transition
&& $active.hasClass('fade')
function next() {
$active
.removeClass('active')
.find('> .dropdown-menu > .active')
.removeClass('active')
element.addClass('active')
if (transition) {
element[0].offsetWidth // reflow for transition
element.addClass('in')
} else {
element.removeClass('fade')
}
if ( element.parent('.dropdown-menu') ) {
element.closest('li.dropdown').addClass('active')
}
callback && callback()
}
transition ?
$active.one($.support.transition.end, next) :
next()
$active.removeClass('in')
}
}