collapse.js

/* ========================================================================
 * Bootstrap: collapse.js v3.0.0
 * 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";

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

  var Collapse = function (element, options) {
    this.$element      = $(element)
    this.options       = $.extend({}, Collapse.DEFAULTS, options)
    this.transitioning = null

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

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

    if (actives && actives.length) {
      var 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.bs.collapse'), 'shown.bs.collapse')

    if ($.support.transition) this.$element[dimension](this.$element[0][scroll])
  }

  Collapse.prototype.hide = function () {
    if (this.transitioning || !this.$element.hasClass('in')) return
    var dimension = this.dimension()
    this.reset(this.$element[dimension]())
    this.transition('removeClass', $.Event('hide.bs.collapse'), 'hidden')
    this.$element[dimension](0)
  }