2013-05-22 02:30:33 +00:00
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/* ========================================================================
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2014-02-13 09:12:26 +00:00
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* Bootstrap: scrollspy.js v3.1.1
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2013-10-29 17:10:47 +00:00
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* http://getbootstrap.com/javascript/#scrollspy
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2013-05-22 02:30:33 +00:00
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* ========================================================================
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2014-01-07 00:05:24 +00:00
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* Copyright 2011-2014 Twitter, Inc.
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2013-12-18 23:28:08 +00:00
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* Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
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2013-05-22 02:30:33 +00:00
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* ======================================================================== */
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2011-09-11 05:24:31 +00:00
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2012-03-25 01:59:04 +00:00
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2014-06-10 05:18:05 +00:00
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(function (o_o) {
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typeof define === 'function' && define.amd ? define(['jquery'], o_o) :
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typeof exports === 'object' ? o_o(require('jquery')) : o_o(this.jQuery)
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})(function ($) {
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2014-01-01 14:42:41 +00:00
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'use strict';
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2012-04-14 23:29:53 +00:00
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2013-05-17 00:18:15 +00:00
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// SCROLLSPY CLASS DEFINITION
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// ==========================
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2011-11-25 04:27:18 +00:00
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2012-07-23 01:28:39 +00:00
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function ScrollSpy(element, options) {
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2013-05-17 00:18:15 +00:00
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var process = $.proxy(this.process, this)
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this.$body = $('body')
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2014-05-29 07:36:53 +00:00
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this.$scrollElement = $(element).is('body') ? $(window) : $(element)
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2013-05-17 00:18:15 +00:00
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this.options = $.extend({}, ScrollSpy.DEFAULTS, options)
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2014-05-29 07:30:18 +00:00
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this.selector = (this.options.target || '') + ' .nav li > a'
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2014-05-29 07:24:41 +00:00
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this.offsets = []
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this.targets = []
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2013-05-17 00:18:15 +00:00
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this.activeTarget = null
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2014-05-29 07:36:53 +00:00
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this.$scrollElement.on('scroll.bs.scrollspy', process)
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2011-09-12 03:08:43 +00:00
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this.refresh()
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2011-10-20 06:12:50 +00:00
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this.process()
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2011-09-11 05:14:57 +00:00
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}
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2014-05-13 04:15:16 +00:00
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ScrollSpy.VERSION = '3.1.1'
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2013-05-17 00:18:15 +00:00
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ScrollSpy.DEFAULTS = {
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offset: 10
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}
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ScrollSpy.prototype.refresh = function () {
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2014-05-29 07:51:49 +00:00
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var offsetMethod = 'offset'
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var offsetBase = 0
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if (!$.isWindow(this.$scrollElement[0])) {
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offsetMethod = 'position'
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offsetBase = this.$scrollElement.scrollTop()
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}
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2013-07-27 05:24:51 +00:00
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2014-05-29 07:24:41 +00:00
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this.offsets = []
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this.targets = []
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2013-05-17 00:18:15 +00:00
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var self = this
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2014-03-01 16:19:50 +00:00
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this.$body
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2013-05-17 00:18:15 +00:00
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.find(this.selector)
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.map(function () {
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var $el = $(this)
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var href = $el.data('target') || $el.attr('href')
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2013-12-24 06:08:43 +00:00
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var $href = /^#./.test(href) && $(href)
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2013-05-17 00:18:15 +00:00
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return ($href
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&& $href.length
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2013-10-22 11:31:23 +00:00
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&& $href.is(':visible')
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&& [[$href[offsetMethod]().top + offsetBase, href]]) || null
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2013-05-17 00:18:15 +00:00
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})
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.sort(function (a, b) { return a[0] - b[0] })
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.each(function () {
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self.offsets.push(this[0])
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self.targets.push(this[1])
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})
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}
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2011-09-11 05:14:57 +00:00
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2013-05-17 00:18:15 +00:00
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ScrollSpy.prototype.process = function () {
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var scrollTop = this.$scrollElement.scrollTop() + this.options.offset
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2013-12-19 11:41:33 +00:00
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var scrollHeight = this.$scrollElement[0].scrollHeight || Math.max(this.$body[0].scrollHeight, document.documentElement.scrollHeight)
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2014-05-13 14:57:04 +00:00
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var maxScroll = this.options.offset + scrollHeight - this.$scrollElement.height()
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var offsets = this.offsets
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var targets = this.targets
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var activeTarget = this.activeTarget
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var i
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if (scrollTop >= maxScroll) {
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2014-05-29 07:24:41 +00:00
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return activeTarget != (i = targets[targets.length - 1]) && this.activate(i)
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2013-05-17 00:18:15 +00:00
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}
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2013-11-04 17:09:48 +00:00
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if (activeTarget && scrollTop <= offsets[0]) {
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2013-12-30 02:04:43 +00:00
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return activeTarget != (i = targets[0]) && this.activate(i)
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2013-11-04 17:09:48 +00:00
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}
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2013-05-17 00:18:15 +00:00
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for (i = offsets.length; i--;) {
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activeTarget != targets[i]
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&& scrollTop >= offsets[i]
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&& (!offsets[i + 1] || scrollTop <= offsets[i + 1])
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2014-03-17 07:12:55 +00:00
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&& this.activate(targets[i])
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}
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2011-09-11 05:14:57 +00:00
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}
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2013-05-17 00:18:15 +00:00
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ScrollSpy.prototype.activate = function (target) {
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this.activeTarget = target
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$(this.selector)
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2013-12-26 04:33:05 +00:00
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.parentsUntil(this.options.target, '.active')
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2013-05-17 00:18:15 +00:00
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.removeClass('active')
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2013-12-19 14:32:37 +00:00
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var selector = this.selector +
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'[data-target="' + target + '"],' +
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this.selector + '[href="' + target + '"]'
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2011-11-25 04:27:18 +00:00
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2013-05-17 00:18:15 +00:00
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var active = $(selector)
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.parents('li')
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.addClass('active')
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2013-12-19 14:32:37 +00:00
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if (active.parent('.dropdown-menu').length) {
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2013-05-17 00:18:15 +00:00
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active = active
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.closest('li.dropdown')
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.addClass('active')
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}
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2013-11-15 07:58:29 +00:00
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active.trigger('activate.bs.scrollspy')
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2013-05-17 00:18:15 +00:00
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}
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// SCROLLSPY PLUGIN DEFINITION
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// ===========================
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2011-11-25 04:27:18 +00:00
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2014-04-22 05:03:33 +00:00
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function Plugin(option) {
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2011-11-25 04:27:18 +00:00
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return this.each(function () {
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2013-05-17 00:18:15 +00:00
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var $this = $(this)
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2013-05-17 03:19:51 +00:00
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var data = $this.data('bs.scrollspy')
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2013-05-17 00:18:15 +00:00
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var options = typeof option == 'object' && option
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2013-05-17 03:19:51 +00:00
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if (!data) $this.data('bs.scrollspy', (data = new ScrollSpy(this, options)))
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2011-11-25 04:27:18 +00:00
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if (typeof option == 'string') data[option]()
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})
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}
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2014-04-22 05:03:33 +00:00
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var old = $.fn.scrollspy
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$.fn.scrollspy = Plugin
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2011-12-21 07:28:48 +00:00
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$.fn.scrollspy.Constructor = ScrollSpy
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2011-11-25 04:27:18 +00:00
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2013-05-17 00:18:15 +00:00
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// SCROLLSPY NO CONFLICT
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// =====================
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2012-12-07 22:06:01 +00:00
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$.fn.scrollspy.noConflict = function () {
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$.fn.scrollspy = old
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return this
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}
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2013-05-17 00:18:15 +00:00
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// SCROLLSPY DATA-API
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// ==================
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2011-11-25 04:27:18 +00:00
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2014-01-22 13:09:41 +00:00
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$(window).on('load.bs.scrollspy.data-api', function () {
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2012-01-25 06:33:33 +00:00
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$('[data-spy="scroll"]').each(function () {
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var $spy = $(this)
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2014-04-22 05:03:33 +00:00
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Plugin.call($spy, $spy.data())
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2012-01-25 06:33:33 +00:00
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})
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2012-01-22 05:35:20 +00:00
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})
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2011-09-12 03:08:43 +00:00
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2014-06-10 05:18:05 +00:00
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});
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