info@54: /* ========================================================================
info@54:  * Bootstrap: scrollspy.js v3.0.3
info@54:  * http://getbootstrap.com/javascript/#scrollspy
info@54:  * ========================================================================
info@54:  * Copyright 2013 Twitter, Inc.
info@54:  *
info@54:  * Licensed under the Apache License, Version 2.0 (the "License");
info@54:  * you may not use this file except in compliance with the License.
info@54:  * You may obtain a copy of the License at
info@54:  *
info@54:  * http://www.apache.org/licenses/LICENSE-2.0
info@54:  *
info@54:  * Unless required by applicable law or agreed to in writing, software
info@54:  * distributed under the License is distributed on an "AS IS" BASIS,
info@54:  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
info@54:  * See the License for the specific language governing permissions and
info@54:  * limitations under the License.
info@54:  * ======================================================================== */
info@54: 
info@54: 
info@54: +function ($) { "use strict";
info@54: 
info@54:   // SCROLLSPY CLASS DEFINITION
info@54:   // ==========================
info@54: 
info@54:   function ScrollSpy(element, options) {
info@54:     var href
info@54:     var process  = $.proxy(this.process, this)
info@54: 
info@54:     this.$element       = $(element).is('body') ? $(window) : $(element)
info@54:     this.$body          = $('body')
info@54:     this.$scrollElement = this.$element.on('scroll.bs.scroll-spy.data-api', process)
info@54:     this.options        = $.extend({}, ScrollSpy.DEFAULTS, options)
info@54:     this.selector       = (this.options.target
info@54:       || ((href = $(element).attr('href')) && href.replace(/.*(?=#[^\s]+$)/, '')) //strip for ie7
info@54:       || '') + ' .nav li > a'
info@54:     this.offsets        = $([])
info@54:     this.targets        = $([])
info@54:     this.activeTarget   = null
info@54: 
info@54:     this.refresh()
info@54:     this.process()
info@54:   }
info@54: 
info@54:   ScrollSpy.DEFAULTS = {
info@54:     offset: 10
info@54:   }
info@54: 
info@54:   ScrollSpy.prototype.refresh = function () {
info@54:     var offsetMethod = this.$element[0] == window ? 'offset' : 'position'
info@54: 
info@54:     this.offsets = $([])
info@54:     this.targets = $([])
info@54: 
info@54:     var self     = this
info@54:     var $targets = this.$body
info@54:       .find(this.selector)
info@54:       .map(function () {
info@54:         var $el   = $(this)
info@54:         var href  = $el.data('target') || $el.attr('href')
info@54:         var $href = /^#\w/.test(href) && $(href)
info@54: 
info@54:         return ($href
info@54:           && $href.length
info@54:           && [[ $href[offsetMethod]().top + (!$.isWindow(self.$scrollElement.get(0)) && self.$scrollElement.scrollTop()), href ]]) || null
info@54:       })
info@54:       .sort(function (a, b) { return a[0] - b[0] })
info@54:       .each(function () {
info@54:         self.offsets.push(this[0])
info@54:         self.targets.push(this[1])
info@54:       })
info@54:   }
info@54: 
info@54:   ScrollSpy.prototype.process = function () {
info@54:     var scrollTop    = this.$scrollElement.scrollTop() + this.options.offset
info@54:     var scrollHeight = this.$scrollElement[0].scrollHeight || this.$body[0].scrollHeight
info@54:     var maxScroll    = scrollHeight - this.$scrollElement.height()
info@54:     var offsets      = this.offsets
info@54:     var targets      = this.targets
info@54:     var activeTarget = this.activeTarget
info@54:     var i
info@54: 
info@54:     if (scrollTop >= maxScroll) {
info@54:       return activeTarget != (i = targets.last()[0]) && this.activate(i)
info@54:     }
info@54: 
info@54:     for (i = offsets.length; i--;) {
info@54:       activeTarget != targets[i]
info@54:         && scrollTop >= offsets[i]
info@54:         && (!offsets[i + 1] || scrollTop <= offsets[i + 1])
info@54:         && this.activate( targets[i] )
info@54:     }
info@54:   }
info@54: 
info@54:   ScrollSpy.prototype.activate = function (target) {
info@54:     this.activeTarget = target
info@54: 
info@54:     $(this.selector)
info@54:       .parents('.active')
info@54:       .removeClass('active')
info@54: 
info@54:     var selector = this.selector
info@54:       + '[data-target="' + target + '"],'
info@54:       + this.selector + '[href="' + target + '"]'
info@54: 
info@54:     var active = $(selector)
info@54:       .parents('li')
info@54:       .addClass('active')
info@54: 
info@54:     if (active.parent('.dropdown-menu').length)  {
info@54:       active = active
info@54:         .closest('li.dropdown')
info@54:         .addClass('active')
info@54:     }
info@54: 
info@54:     active.trigger('activate.bs.scrollspy')
info@54:   }
info@54: 
info@54: 
info@54:   // SCROLLSPY PLUGIN DEFINITION
info@54:   // ===========================
info@54: 
info@54:   var old = $.fn.scrollspy
info@54: 
info@54:   $.fn.scrollspy = function (option) {
info@54:     return this.each(function () {
info@54:       var $this   = $(this)
info@54:       var data    = $this.data('bs.scrollspy')
info@54:       var options = typeof option == 'object' && option
info@54: 
info@54:       if (!data) $this.data('bs.scrollspy', (data = new ScrollSpy(this, options)))
info@54:       if (typeof option == 'string') data[option]()
info@54:     })
info@54:   }
info@54: 
info@54:   $.fn.scrollspy.Constructor = ScrollSpy
info@54: 
info@54: 
info@54:   // SCROLLSPY NO CONFLICT
info@54:   // =====================
info@54: 
info@54:   $.fn.scrollspy.noConflict = function () {
info@54:     $.fn.scrollspy = old
info@54:     return this
info@54:   }
info@54: 
info@54: 
info@54:   // SCROLLSPY DATA-API
info@54:   // ==================
info@54: 
info@54:   $(window).on('load', function () {
info@54:     $('[data-spy="scroll"]').each(function () {
info@54:       var $spy = $(this)
info@54:       $spy.scrollspy($spy.data())
info@54:     })
info@54:   })
info@54: 
info@54: }(jQuery);