bootstrap-collapse.js

/* =============================================================
 * bootstrap-collapse.js v2.0.3
 * http://twitter.github.com/bootstrap/javascript.html#collapse
 * =============================================================
 * 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"; // jshint ;_;


    /* COLLAPSE PUBLIC CLASS DEFINITION
     * ================================ */

    var Collapse = function (element, options) {
        this.$element = $(element)
        this.options = $.extend({}, $.fn.collapse.defaults, options)

        if (this.options.parent) {
            this.$parent = $(this.options.parent)
        }

        this.options.toggle && this.toggle()
    }

    Collapse.prototype = {

        constructor: Collapse

        , dimension: function () {
            var hasWidth = this.$element.hasClass('width')
            return hasWidth ? 'width' : 'height'
        }

        , show: function () {
            var dimension
                , scroll
                , actives
                , hasData

            if (this.transitioning) return

            dimension = this.dimension()
            scroll = $.camelCase(['scroll', dimension].join('-'))
            actives = this.$parent && this.$parent.find('> .accordion-group > .in')

            if (actives && actives.length) {
                hasData = actives.data('collapse')
                if (hasData && hasData.transitioning) return
                actives.collapse('hide')
                hasData || actives.data('collapse', null)
            }

            this.$element[dimension](0)
            this.transition('addClass', $.Event('show'), 'shown')
            this.$element[dimension](this.$element[0][scroll])
        }

        , hide: function () {
            var dimension
            if (this.transitioning) return
            dimension = this.dimension()
            this.reset(this.$element[dimension]())
            this.transition('removeClass', $.Event('hide'), 'hidden')
            this.$element[dimension](0)
        }

        , reset: function (size) {
            var dimension = this.dimension()

            this.$element
                .removeClass('collapse')
                [dimension](size || 'auto')
                [0].offsetWidth

            this.$element[size !== null ? 'addClass' : 'removeClass']('collapse')

            return this
        }

        , transition: function (method, startEvent, completeEvent) {
            var that = this
                , complete = function () {
                    if (startEvent.type == 'show') that.reset()
                    that.transitioning = 0
                    that.$element.trigger(completeEvent)
                }

            this.$element.trigger(startEvent)

            if (startEvent.isDefaultPrevented()) return

            this.transitioning = 1

            this.$element[method]('in')

            $.support.transition && this.$element.hasClass('collapse') ?
                this.$element.one($.support.transition.end, complete) :
                complete()
        }

        , toggle: function () {
            this[this.$element.hasClass('in') ? 'hide' : 'show']()
        }

    }


    /* COLLAPSIBLE PLUGIN DEFINITION
     * ============================== */

    $.fn.collapse = function (option) {
        return this.each(function () {
            var $this = $(this)
                , data = $this.data('collapse')
                , options = typeof option == 'object' && option
            if (!data) $this.data('collapse', (data = new Collapse(this, options)))
            if (typeof option == 'string') data[option]()
        })
    }

    $.fn.collapse.defaults = {
        toggle: true
    }

    $.fn.collapse.Constructor = Collapse


    /* COLLAPSIBLE DATA-API
     * ==================== */

    $(function () {
        $('body').on('click.collapse.data-api', '[data-toggle=collapse]', function ( e ) {
            var $this = $(this), href
                , target = $this.attr('data-target')
                    || e.preventDefault()
                    || (href = $this.attr('href')) && href.replace(/.*(?=#[^\s]+$)/, '') //strip for ie7
                , option = $(target).data('collapse') ? 'toggle' : $this.data()
            $(target).collapse(option)
        })
    })

}(window.jQuery);