info@54: /* ========================================================================
info@54:  * Bootstrap: affix.js v3.0.3
info@54:  * http://getbootstrap.com/javascript/#affix
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:   // AFFIX CLASS DEFINITION
info@54:   // ======================
info@54: 
info@54:   var Affix = function (element, options) {
info@54:     this.options = $.extend({}, Affix.DEFAULTS, options)
info@54:     this.$window = $(window)
info@54:       .on('scroll.bs.affix.data-api', $.proxy(this.checkPosition, this))
info@54:       .on('click.bs.affix.data-api',  $.proxy(this.checkPositionWithEventLoop, this))
info@54: 
info@54:     this.$element = $(element)
info@54:     this.affixed  =
info@54:     this.unpin    = null
info@54: 
info@54:     this.checkPosition()
info@54:   }
info@54: 
info@54:   Affix.RESET = 'affix affix-top affix-bottom'
info@54: 
info@54:   Affix.DEFAULTS = {
info@54:     offset: 0
info@54:   }
info@54: 
info@54:   Affix.prototype.checkPositionWithEventLoop = function () {
info@54:     setTimeout($.proxy(this.checkPosition, this), 1)
info@54:   }
info@54: 
info@54:   Affix.prototype.checkPosition = function () {
info@54:     if (!this.$element.is(':visible')) return
info@54: 
info@54:     var scrollHeight = $(document).height()
info@54:     var scrollTop    = this.$window.scrollTop()
info@54:     var position     = this.$element.offset()
info@54:     var offset       = this.options.offset
info@54:     var offsetTop    = offset.top
info@54:     var offsetBottom = offset.bottom
info@54: 
info@54:     if (typeof offset != 'object')         offsetBottom = offsetTop = offset
info@54:     if (typeof offsetTop == 'function')    offsetTop    = offset.top()
info@54:     if (typeof offsetBottom == 'function') offsetBottom = offset.bottom()
info@54: 
info@54:     var affix = this.unpin   != null && (scrollTop + this.unpin <= position.top) ? false :
info@54:                 offsetBottom != null && (position.top + this.$element.height() >= scrollHeight - offsetBottom) ? 'bottom' :
info@54:                 offsetTop    != null && (scrollTop <= offsetTop) ? 'top' : false
info@54: 
info@54:     if (this.affixed === affix) return
info@54:     if (this.unpin) this.$element.css('top', '')
info@54: 
info@54:     this.affixed = affix
info@54:     this.unpin   = affix == 'bottom' ? position.top - scrollTop : null
info@54: 
info@54:     this.$element.removeClass(Affix.RESET).addClass('affix' + (affix ? '-' + affix : ''))
info@54: 
info@54:     if (affix == 'bottom') {
info@54:       this.$element.offset({ top: document.body.offsetHeight - offsetBottom - this.$element.height() })
info@54:     }
info@54:   }
info@54: 
info@54: 
info@54:   // AFFIX PLUGIN DEFINITION
info@54:   // =======================
info@54: 
info@54:   var old = $.fn.affix
info@54: 
info@54:   $.fn.affix = function (option) {
info@54:     return this.each(function () {
info@54:       var $this   = $(this)
info@54:       var data    = $this.data('bs.affix')
info@54:       var options = typeof option == 'object' && option
info@54: 
info@54:       if (!data) $this.data('bs.affix', (data = new Affix(this, options)))
info@54:       if (typeof option == 'string') data[option]()
info@54:     })
info@54:   }
info@54: 
info@54:   $.fn.affix.Constructor = Affix
info@54: 
info@54: 
info@54:   // AFFIX NO CONFLICT
info@54:   // =================
info@54: 
info@54:   $.fn.affix.noConflict = function () {
info@54:     $.fn.affix = old
info@54:     return this
info@54:   }
info@54: 
info@54: 
info@54:   // AFFIX DATA-API
info@54:   // ==============
info@54: 
info@54:   $(window).on('load', function () {
info@54:     $('[data-spy="affix"]').each(function () {
info@54:       var $spy = $(this)
info@54:       var data = $spy.data()
info@54: 
info@54:       data.offset = data.offset || {}
info@54: 
info@54:       if (data.offsetBottom) data.offset.bottom = data.offsetBottom
info@54:       if (data.offsetTop)    data.offset.top    = data.offsetTop
info@54: 
info@54:       $spy.affix(data)
info@54:     })
info@54:   })
info@54: 
info@54: }(jQuery);