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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 /bower_components/bootstrap/js/affix.js
parent20e2d90874a3e1116c76e1547210d191dd0159f4 (diff)
unignore bower_components
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+/* ========================================================================
+ * Bootstrap: affix.js v3.0.0
+ * http://twbs.github.com/bootstrap/javascript.html#affix
+ * ========================================================================
+ * Copyright 2012 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";
+
+ // AFFIX CLASS DEFINITION
+ // ======================
+
+ var Affix = function (element, options) {
+ this.options = $.extend({}, Affix.DEFAULTS, options)
+ this.$window = $(window)
+ .on('scroll.bs.affix.data-api', $.proxy(this.checkPosition, this))
+ .on('click.bs.affix.data-api', $.proxy(this.checkPositionWithEventLoop, this))
+
+ this.$element = $(element)
+ this.affixed =
+ this.unpin = null
+
+ this.checkPosition()
+ }
+
+ Affix.RESET = 'affix affix-top affix-bottom'
+
+ Affix.DEFAULTS = {
+ offset: 0
+ }
+
+ Affix.prototype.checkPositionWithEventLoop = function () {
+ setTimeout($.proxy(this.checkPosition, this), 1)
+ }
+
+ Affix.prototype.checkPosition = function () {
+ if (!this.$element.is(':visible')) return
+
+ var scrollHeight = $(document).height()
+ var scrollTop = this.$window.scrollTop()
+ var position = this.$element.offset()
+ var offset = this.options.offset
+ var offsetTop = offset.top
+ var offsetBottom = offset.bottom
+
+ if (typeof offset != 'object') offsetBottom = offsetTop = offset
+ if (typeof offsetTop == 'function') offsetTop = offset.top()
+ if (typeof offsetBottom == 'function') offsetBottom = offset.bottom()
+
+ var affix = this.unpin != null && (scrollTop + this.unpin <= position.top) ? false :
+ offsetBottom != null && (position.top + this.$element.height() >= scrollHeight - offsetBottom) ? 'bottom' :
+ offsetTop != null && (scrollTop <= offsetTop) ? 'top' : false
+
+ if (this.affixed === affix) return
+ if (this.unpin) this.$element.css('top', '')
+
+ this.affixed = affix
+ this.unpin = affix == 'bottom' ? position.top - scrollTop : null
+
+ this.$element.removeClass(Affix.RESET).addClass('affix' + (affix ? '-' + affix : ''))
+
+ if (affix == 'bottom') {
+ this.$element.offset({ top: document.body.offsetHeight - offsetBottom - this.$element.height() })
+ }
+ }
+
+
+ // AFFIX PLUGIN DEFINITION
+ // =======================
+
+ var old = $.fn.affix
+
+ $.fn.affix = function (option) {
+ return this.each(function () {
+ var $this = $(this)
+ var data = $this.data('bs.affix')
+ var options = typeof option == 'object' && option
+
+ if (!data) $this.data('bs.affix', (data = new Affix(this, options)))
+ if (typeof option == 'string') data[option]()
+ })
+ }
+
+ $.fn.affix.Constructor = Affix
+
+
+ // 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)
+ var data = $spy.data()
+
+ data.offset = data.offset || {}
+
+ if (data.offsetBottom) data.offset.bottom = data.offsetBottom
+ if (data.offsetTop) data.offset.top = data.offsetTop
+
+ $spy.affix(data)
+ })
+ })
+
+}(window.jQuery);