Team:Paris Saclay/bootstrapjs

/*!

* Bootstrap v3.3.5 (http://getbootstrap.com)
* Copyright 2011-2015 Twitter, Inc.
* Licensed under the MIT license
* Edited by Fabio Maschi for iGEM Paris-Saclay
* 13rd September 2015
*/

/* ========================================================================

* Bootstrap: scrollspy.js v3.3.5
* http://getbootstrap.com/javascript/#scrollspy
* ========================================================================
* Copyright 2011-2015 Twitter, Inc.
* Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
* ======================================================================== */

+function ($) {

 'use strict';

 // SCROLLSPY CLASS DEFINITION
 // ==========================

 function ScrollSpy(element, options) {
   this.$body          = $(document.body)
   this.$scrollElement = $(element).is(document.body) ? $(window) : $(element)
   this.options        = $.extend({}, ScrollSpy.DEFAULTS, options)
   this.selector       = (this.options.target || ) + ' ul li > a'
   this.offsets        = []
   this.targets        = []
   this.activeTarget   = null
   this.scrollHeight   = 0

   this.$scrollElement.on('scroll.bs.scrollspy', $.proxy(this.process, this))
   this.refresh()
   this.process()
 }

 ScrollSpy.VERSION  = '3.3.5'

 ScrollSpy.DEFAULTS = {
   offset: 10
 }

 ScrollSpy.prototype.getScrollHeight = function () {
   return this.$scrollElement[0].scrollHeight || Math.max(this.$body[0].scrollHeight, document.documentElement.scrollHeight)
 }

 ScrollSpy.prototype.refresh = function () {
   var that          = this
   var offsetMethod  = 'offset'
   var offsetBase    = 0

   this.offsets      = []
   this.targets      = []
   this.scrollHeight = this.getScrollHeight()

   if (!$.isWindow(this.$scrollElement[0])) {
     offsetMethod = 'position'
     offsetBase   = this.$scrollElement.scrollTop()
   }

   this.$body
     .find(this.selector)
     .map(function () {
       var $el   = $(this)
       var href  = $el.data('target') || $el.attr('href')
       var $href = /^#./.test(href) && $(href)

       return ($href
         && $href.length
         && $href.is(':visible')
         && [[$href[offsetMethod]().top + offsetBase, href]]) || null
     })
     .sort(function (a, b) { return a[0] - b[0] })
     .each(function () {
       that.offsets.push(this[0])
       that.targets.push(this[1])
     })
 }

 ScrollSpy.prototype.process = function () {
   var scrollTop    = this.$scrollElement.scrollTop() + this.options.offset
   var scrollHeight = this.getScrollHeight()
   var maxScroll    = this.options.offset + scrollHeight - this.$scrollElement.height()
   var offsets      = this.offsets
   var targets      = this.targets
   var activeTarget = this.activeTarget
   var i

   if (this.scrollHeight != scrollHeight) {
     this.refresh()
   }

   if (scrollTop >= maxScroll) {
     return activeTarget != (i = targets[targets.length - 1]) && this.activate(i)
   }

   if (activeTarget && scrollTop < offsets[0]) {
     this.activeTarget = null
     return this.clear()
   }

   for (i = offsets.length; i--;) {
     activeTarget != targets[i]
       && scrollTop >= offsets[i]
       && (offsets[i + 1] === undefined || scrollTop < offsets[i + 1])
       && this.activate(targets[i])
   }
 }

 ScrollSpy.prototype.activate = function (target) {
   this.activeTarget = target

   this.clear()

   var selector = this.selector +
     '[data-target="' + target + '"],' +
     this.selector + '[data-target="' + target + '"]'

   var active = $(selector)
     .parents('li')
     .addClass('active')

   if (active.parent('.dropdown-menu').length) {
     active = active
       .closest('li.dropdown')
       .addClass('active')
   }

   active.trigger('activate.bs.scrollspy')
 }

 ScrollSpy.prototype.clear = function () {
   $(this.selector)
     .parentsUntil(this.options.target, '.active')
     .removeClass('active')
 }

 // SCROLLSPY PLUGIN DEFINITION
 // ===========================

 function Plugin(option) {
   return this.each(function () {
     var $this   = $(this)
     var data    = $this.data('bs.scrollspy')
     var options = typeof option == 'object' && option

     if (!data) $this.data('bs.scrollspy', (data = new ScrollSpy(this, options)))
     if (typeof option == 'string') data[option]()
   })
 }

 var old = $.fn.scrollspy

 $.fn.scrollspy             = Plugin
 $.fn.scrollspy.Constructor = ScrollSpy

 // SCROLLSPY NO CONFLICT
 // =====================

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

 // SCROLLSPY DATA-API
 // ==================

 $(window).on('load.bs.scrollspy.data-api', function () {
   $('[data-spy="scroll"]').each(function () {
     var $spy = $(this)
     Plugin.call($spy, $spy.data())
   })
 })

}(jQuery);