/* ========================================================================
 * Bootstrap: collapse.js v3.3.6
 * http://getbootstrap.com/javascript/#collapse
 * ========================================================================
 * Copyright 2011-2015 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * ======================================================================== */


+function ($) {
    'use strict';

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

    var Collapse = function (element, options) {
        this.$element = $(element)
        this.options = $.extend({}, Collapse.DEFAULTS, options)
        this.$trigger = $('[data-toggle="collapse"][href="#' + element.id + '"],' +
            '[data-toggle="collapse"][data-target="#' + element.id + '"]')
        this.transitioning = null

        if (this.options.parent) {
            this.$parent = this.getParent()
        } else {
            this.addAriaAndCollapsedClass(this.$element, this.$trigger)
        }

        if (this.options.toggle) this.toggle()
    }

    Collapse.VERSION = '3.3.6'

    Collapse.TRANSITION_DURATION = 350

    Collapse.DEFAULTS = {
        toggle: true
    }

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

    Collapse.prototype.show = function () {
        if (this.transitioning || this.$element.hasClass('in')) return

        var activesData
        var actives = this.$parent && this.$parent.children('.panel').children('.in, .collapsing')

        if (actives && actives.length) {
            activesData = actives.data('bs.collapse')
            if (activesData && activesData.transitioning) return
        }

        var startEvent = $.Event('show.bs.collapse')
        this.$element.trigger(startEvent)
        if (startEvent.isDefaultPrevented()) return

        if (actives && actives.length) {
            Plugin.call(actives, 'hide')
            activesData || actives.data('bs.collapse', null)
        }

        var dimension = this.dimension()

        this.$element
            .removeClass('collapse')
            .addClass('collapsing')[dimension](0)
            .attr('aria-expanded', true)

        this.$trigger
            .removeClass('collapsed')
            .attr('aria-expanded', true)

        this.transitioning = 1

        var complete = function () {
            this.$element
                .removeClass('collapsing')
                .addClass('collapse in')[dimension]('')
            this.transitioning = 0
            this.$element
                .trigger('shown.bs.collapse')
        }

        if (!$.support.transition) return complete.call(this)

        var scrollSize = $.camelCase(['scroll', dimension].join('-'))

        this.$element
            .one('bsTransitionEnd', $.proxy(complete, this))
            .emulateTransitionEnd(Collapse.TRANSITION_DURATION)[dimension](this.$element[0][scrollSize])
    }

    Collapse.prototype.hide = function () {
        if (this.transitioning || !this.$element.hasClass('in')) return

        var startEvent = $.Event('hide.bs.collapse')
        this.$element.trigger(startEvent)
        if (startEvent.isDefaultPrevented()) return

        var dimension = this.dimension()

        this.$element[dimension](this.$element[dimension]())[0].offsetHeight

        this.$element
            .addClass('collapsing')
            .removeClass('collapse in')
            .attr('aria-expanded', false)

        this.$trigger
            .addClass('collapsed')
            .attr('aria-expanded', false)

        this.transitioning = 1

        var complete = function () {
            this.transitioning = 0
            this.$element
                .removeClass('collapsing')
                .addClass('collapse')
                .trigger('hidden.bs.collapse')
        }

        if (!$.support.transition) return complete.call(this)

        this.$element
            [dimension](0)
            .one('bsTransitionEnd', $.proxy(complete, this))
            .emulateTransitionEnd(Collapse.TRANSITION_DURATION)
    }

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

    Collapse.prototype.getParent = function () {
        return $(this.options.parent)
            .find('[data-toggle="collapse"][data-parent="' + this.options.parent + '"]')
            .each($.proxy(function (i, element) {
                var $element = $(element)
                this.addAriaAndCollapsedClass(getTargetFromTrigger($element), $element)
            }, this))
            .end()
    }

    Collapse.prototype.addAriaAndCollapsedClass = function ($element, $trigger) {
        var isOpen = $element.hasClass('in')

        $element.attr('aria-expanded', isOpen)
        $trigger
            .toggleClass('collapsed', !isOpen)
            .attr('aria-expanded', isOpen)
    }

    function getTargetFromTrigger($trigger) {
        var href
        var target = $trigger.attr('data-target')
            || (href = $trigger.attr('href')) && href.replace(/.*(?=#[^\s]+$)/, '') // strip for ie7

        return $(target)
    }


    // COLLAPSE PLUGIN DEFINITION
    // ==========================

    function Plugin(option) {
        return this.each(function () {
            var $this = $(this)
            var data = $this.data('bs.collapse')
            var options = $.extend({}, Collapse.DEFAULTS, $this.data(), typeof option == 'object' && option)

            if (!data && options.toggle && /show|hide/.test(option)) options.toggle = false
            if (!data) $this.data('bs.collapse', (data = new Collapse(this, options)))
            if (typeof option == 'string') data[option]()
        })
    }

    var old = $.fn.collapse

    $.fn.collapse = Plugin
    $.fn.collapse.Constructor = Collapse


    // COLLAPSE NO CONFLICT
    // ====================

    $.fn.collapse.noConflict = function () {
        $.fn.collapse = old
        return this
    }


    // COLLAPSE DATA-API
    // =================

    $(document).on('click.bs.collapse.data-api', '[data-toggle="collapse"]', function (e) {
        var $this = $(this)

        if (!$this.attr('data-target')) e.preventDefault()

        var $target = getTargetFromTrigger($this)
        var data = $target.data('bs.collapse')
        var option = data ? 'toggle' : $this.data()

        Plugin.call($target, option)
    })

}(jQuery);