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authorThomas Park <thomas@thomaspark.me>2013-08-06 15:19:12 -0400
committerThomas Park <thomas@thomaspark.me>2013-08-06 15:19:12 -0400
commit4642156cbc6da4a9e25dce2168f2fb9b726de042 (patch)
treed62aec0ebf977e008d016d8af15e54e26d5089b4 /2/bower_components/bootstrap/js/bootstrap-affix.js
parent20e2d90874a3e1116c76e1547210d191dd0159f4 (diff)
unignore bower_components
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+/* ==========================================================
+ * bootstrap-affix.js v2.3.2
+ * http://getbootstrap.com/2.3.2/javascript.html#affix
+ * ==========================================================
+ * Copyright 2013 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"; // jshint ;_;
+
+
+ /* AFFIX CLASS DEFINITION
+ * ====================== */
+
+ var Affix = function (element, options) {
+ this.options = $.extend({}, $.fn.affix.defaults, options)
+ this.$window = $(window)
+ .on('scroll.affix.data-api', $.proxy(this.checkPosition, this))
+ .on('click.affix.data-api', $.proxy(function () { setTimeout($.proxy(this.checkPosition, this), 1) }, this))
+ this.$element = $(element)
+ this.checkPosition()
+ }
+
+ Affix.prototype.checkPosition = function () {
+ if (!this.$element.is(':visible')) return
+
+ var scrollHeight = $(document).height()
+ , scrollTop = this.$window.scrollTop()
+ , position = this.$element.offset()
+ , offset = this.options.offset
+ , offsetBottom = offset.bottom
+ , offsetTop = offset.top
+ , reset = 'affix affix-top affix-bottom'
+ , affix
+
+ if (typeof offset != 'object') offsetBottom = offsetTop = offset
+ if (typeof offsetTop == 'function') offsetTop = offset.top()
+ if (typeof offsetBottom == 'function') offsetBottom = offset.bottom()
+
+ affix = this.unpin != null && (scrollTop + this.unpin <= position.top) ?
+ false : offsetBottom != null && (position.top + this.$element.height() >= scrollHeight - offsetBottom) ?
+ 'bottom' : offsetTop != null && scrollTop <= offsetTop ?
+ 'top' : false
+
+ if (this.affixed === affix) return
+
+ this.affixed = affix
+ this.unpin = affix == 'bottom' ? position.top - scrollTop : null
+
+ this.$element.removeClass(reset).addClass('affix' + (affix ? '-' + affix : ''))
+ }
+
+
+ /* AFFIX PLUGIN DEFINITION
+ * ======================= */
+
+ var old = $.fn.affix
+
+ $.fn.affix = function (option) {
+ return this.each(function () {
+ var $this = $(this)
+ , data = $this.data('affix')
+ , options = typeof option == 'object' && option
+ if (!data) $this.data('affix', (data = new Affix(this, options)))
+ if (typeof option == 'string') data[option]()
+ })
+ }
+
+ $.fn.affix.Constructor = Affix
+
+ $.fn.affix.defaults = {
+ offset: 0
+ }
+
+
+ /* AFFIX NO CONFLICT
+ * ================= */
+
+ $.fn.affix.noConflict = function () {
+ $.fn.affix = old
+ return this
+ }
+
+
+ /* AFFIX DATA-API
+ * ============== */
+
+ $(window).on('load', function () {
+ $('[data-spy="affix"]').each(function () {
+ var $spy = $(this)
+ , data = $spy.data()
+
+ data.offset = data.offset || {}
+
+ data.offsetBottom && (data.offset.bottom = data.offsetBottom)
+ data.offsetTop && (data.offset.top = data.offsetTop)
+
+ $spy.affix(data)
+ })
+ })
+
+
+}(window.jQuery); \ No newline at end of file