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mirror of https://github.com/twbs/bootstrap.git synced 2024-12-14 02:24:00 +01:00
Bootstrap/js/carousel.js
2013-07-25 12:24:13 -07:00

214 lines
6.3 KiB
JavaScript

/* ========================================================================
* Bootstrap: carousel.js v3.0.0
* http://twbs.github.com/bootstrap/javascript.html#carousel
* ========================================================================
* Copyright 2012 Twitter, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ======================================================================== */
+function ($) { "use strict";
// CAROUSEL CLASS DEFINITION
// =========================
var Carousel = function (element, options) {
this.$element = $(element)
this.$indicators = this.$element.find('.carousel-indicators')
this.options = options
this.paused =
this.sliding =
this.interval =
this.$active =
this.$items = null
this.options.pause == 'hover' && this.$element
.on('mouseenter', $.proxy(this.pause, this))
.on('mouseleave', $.proxy(this.cycle, this))
}
Carousel.DEFAULTS = {
interval: 5000
, pause: 'hover'
}
Carousel.prototype.cycle = function (e) {
e || (this.paused = false)
this.interval && clearInterval(this.interval)
this.options.interval
&& !this.paused
&& (this.interval = setInterval($.proxy(this.next, this), this.options.interval))
return this
}
Carousel.prototype.getActiveIndex = function () {
this.$active = this.$element.find('.item.active')
this.$items = this.$active.parent().children()
return this.$items.index(this.$active)
}
Carousel.prototype.to = function (pos) {
var that = this
var activeIndex = this.getActiveIndex()
if (pos > (this.$items.length - 1) || pos < 0) return
if (this.sliding) return this.$element.one('slid', function () { that.to(pos) })
if (activeIndex == pos) return this.pause().cycle()
return this.slide(pos > activeIndex ? 'next' : 'prev', $(this.$items[pos]))
}
Carousel.prototype.pause = function (e) {
e || (this.paused = true)
if (this.$element.find('.next, .prev').length && $.support.transition.end) {
this.$element.trigger($.support.transition.end)
this.cycle(true)
}
this.interval = clearInterval(this.interval)
return this
}
Carousel.prototype.next = function () {
if (this.sliding) return
return this.slide('next')
}
Carousel.prototype.prev = function () {
if (this.sliding) return
return this.slide('prev')
}
Carousel.prototype.slide = function (type, next) {
var $active = this.$element.find('.item.active')
var $next = next || $active[type]()
var isCycling = this.interval
var direction = type == 'next' ? 'left' : 'right'
var fallback = type == 'next' ? 'first' : 'last'
var that = this
this.sliding = true
isCycling && this.pause()
$next = $next.length ? $next : this.$element.find('.item')[fallback]()
var e = $.Event('slide.bs.carousel', { relatedTarget: $next[0], direction: direction })
if ($next.hasClass('active')) return
if (this.$indicators.length) {
this.$indicators.find('.active').removeClass('active')
this.$element.one('slid', function () {
var $nextIndicator = $(that.$indicators.children()[that.getActiveIndex()])
$nextIndicator && $nextIndicator.addClass('active')
})
}
if ($.support.transition && this.$element.hasClass('slide')) {
this.$element.trigger(e)
if (e.isDefaultPrevented()) return
$next.addClass(type)
$next[0].offsetWidth // force reflow
$active.addClass(direction)
$next.addClass(direction)
$active
.one($.support.transition.end, function () {
$next.removeClass([type, direction].join(' ')).addClass('active')
$active.removeClass(['active', direction].join(' '))
that.sliding = false
setTimeout(function () { that.$element.trigger('slid') }, 0)
})
.emulateTransitionEnd(600)
} else {
this.$element.trigger(e)
if (e.isDefaultPrevented()) return
$active.removeClass('active')
$next.addClass('active')
this.sliding = false
this.$element.trigger('slid')
}
isCycling && this.cycle()
return this
}
// CAROUSEL PLUGIN DEFINITION
// ==========================
var old = $.fn.carousel
$.fn.carousel = function (option) {
return this.each(function () {
var $this = $(this)
var data = $this.data('bs.carousel')
var options = $.extend({}, Carousel.DEFAULTS, $this.data(), typeof option == 'object' && option)
var action = typeof option == 'string' ? option : options.slide
if (!data) $this.data('bs.carousel', (data = new Carousel(this, options)))
if (typeof option == 'number') data.to(option)
else if (action) data[action]()
else if (options.interval) data.pause().cycle()
})
}
$.fn.carousel.Constructor = Carousel
// CAROUSEL NO CONFLICT
// ====================
$.fn.carousel.noConflict = function () {
$.fn.carousel = old
return this
}
// CAROUSEL DATA-API
// =================
$(document).on('click.bs.carousel.data-api', '[data-slide], [data-slide-to]', function (e) {
var $this = $(this), href
var $target = $($this.attr('data-target') || (href = $this.attr('href')) && href.replace(/.*(?=#[^\s]+$)/, '')) //strip for ie7
var options = $.extend({}, $target.data(), $this.data())
var slideIndex = $this.attr('data-slide-to')
if (slideIndex) options.interval = false
$target.carousel(options)
if (slideIndex = $this.attr('data-slide-to')) {
$target.data('bs.carousel').to(slideIndex)
}
e.preventDefault()
})
$(window).on('load', function () {
$('[data-ride="carousel"]').each(function () {
var $carousel = $(this)
$carousel.carousel($carousel.data())
})
})
}(window.jQuery);