Add JS files

port/js/shortcuts/sticky.js

@@ -0,0 +1,65 @@
+/*!
+Waypoints Sticky Element Shortcut - 3.1.1
+Copyright © 2011-2015 Caleb Troughton
+Licensed under the MIT license.
+https://github.com/imakewebthings/waypoints/blog/master/licenses.txt
+*/
+(function() {
+  'use strict'
+
+  var $ = window.jQuery
+  var Waypoint = window.Waypoint
+
+  /* http://imakewebthings.com/waypoints/shortcuts/sticky-elements */
+  function Sticky(options) {
+    this.options = $.extend({}, Waypoint.defaults, Sticky.defaults, options)
+    this.element = this.options.element
+    this.$element = $(this.element)
+    this.createWrapper()
+    this.createWaypoint()
+  }
+
+  /* Private */
+  Sticky.prototype.createWaypoint = function() {
+    var originalHandler = this.options.handler
+
+    this.waypoint = new Waypoint($.extend({}, this.options, {
+      element: this.wrapper,
+      handler: $.proxy(function(direction) {
+        var shouldBeStuck = this.options.direction.indexOf(direction) > -1
+        var wrapperHeight = shouldBeStuck ? this.$element.outerHeight(true) : ''
+
+        this.$wrapper.height(wrapperHeight)
+        this.$element.toggleClass(this.options.stuckClass, shouldBeStuck)
+
+        if (originalHandler) {
+          originalHandler.call(this, direction)
+        }
+      }, this)
+    }))
+  }
+
+  /* Private */
+  Sticky.prototype.createWrapper = function() {
+    this.$element.wrap(this.options.wrapper)
+    this.$wrapper = this.$element.parent()
+    this.wrapper = this.$wrapper[0]
+  }
+
+  /* Public */
+  Sticky.prototype.destroy = function() {
+    if (this.$element.parent()[0] === this.wrapper) {
+      this.waypoint.destroy()
+      this.$element.removeClass(this.options.stuckClass).unwrap()
+    }
+  }
+
+  Sticky.defaults = {
+    wrapper: '<div class="sticky-wrapper" />',
+    stuckClass: 'stuck',
+    direction: 'down right'
+  }
+
+  Waypoint.Sticky = Sticky
+}())
+;