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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,169 @@ | ||
| /* ======================================================================== | ||
| * Bootstrap: scrollspy.js v3.2.0 | ||
| * http://getbootstrap.com/javascript/#scrollspy | ||
| * ======================================================================== | ||
| * Copyright 2011-2014 Twitter, Inc. | ||
| * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE) | ||
| * ======================================================================== */ | ||
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| +function ($) { | ||
| 'use strict'; | ||
|
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| // SCROLLSPY CLASS DEFINITION | ||
| // ========================== | ||
|
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| function ScrollSpy(element, options) { | ||
| var process = $.proxy(this.process, this) | ||
|
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| this.$body = $('body') | ||
| this.$scrollElement = $(element).is('body') ? $(window) : $(element) | ||
| this.options = $.extend({}, ScrollSpy.DEFAULTS, options) | ||
| this.selector = (this.options.target || '') + ' .nav li > a' | ||
| this.offsets = [] | ||
| this.targets = [] | ||
| this.activeTarget = null | ||
| this.scrollHeight = 0 | ||
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| this.$scrollElement.on('scroll.bs.scrollspy', process) | ||
| this.refresh() | ||
| this.process() | ||
| } | ||
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| ScrollSpy.VERSION = '3.2.0' | ||
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| ScrollSpy.DEFAULTS = { | ||
| offset: 10 | ||
| } | ||
|
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| ScrollSpy.prototype.getScrollHeight = function () { | ||
| return this.$scrollElement[0].scrollHeight || Math.max(this.$body[0].scrollHeight, document.documentElement.scrollHeight) | ||
| } | ||
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| ScrollSpy.prototype.refresh = function () { | ||
| var offsetMethod = 'offset' | ||
| var offsetBase = 0 | ||
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| if (!$.isWindow(this.$scrollElement[0])) { | ||
| offsetMethod = 'position' | ||
| offsetBase = this.$scrollElement.scrollTop() | ||
| } | ||
|
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| this.offsets = [] | ||
| this.targets = [] | ||
| this.scrollHeight = this.getScrollHeight() | ||
|
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| var self = this | ||
| this.$body | ||
| .find(this.selector) | ||
| .map(function () { | ||
| var $el = $(this) | ||
| var href = $el.data('target') || $el.attr('href') | ||
| var $href = /^#./.test(href) && $(href) | ||
| return ($href | ||
| && $href.length | ||
| // HACK - allow for invisible targets | ||
| // && $href.is(':visible') | ||
| && [[$href[offsetMethod]().top + offsetBase, href]]) || null | ||
| }) | ||
| .sort(function (a, b) { return a[0] - b[0] }) | ||
| .each(function () { | ||
| self.offsets.push(this[0]) | ||
| self.targets.push(this[1]) | ||
| }) | ||
| } | ||
|
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| ScrollSpy.prototype.process = function () { | ||
| var scrollTop = this.$scrollElement.scrollTop() + this.options.offset | ||
| var scrollHeight = this.getScrollHeight() | ||
| var maxScroll = this.options.offset + scrollHeight - this.$scrollElement.height() | ||
| var offsets = this.offsets | ||
| var targets = this.targets | ||
| var activeTarget = this.activeTarget | ||
| var i | ||
|
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| if (this.scrollHeight != scrollHeight) { | ||
| this.refresh() | ||
| } | ||
|
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| if (scrollTop >= maxScroll) { | ||
| return activeTarget != (i = targets[targets.length - 1]) && this.activate(i) | ||
| } | ||
|
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| if (activeTarget && scrollTop <= offsets[0]) { | ||
| return activeTarget != (i = targets[0]) && this.activate(i) | ||
| } | ||
|
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| for (i = offsets.length; i--;) { | ||
| activeTarget != targets[i] | ||
| && scrollTop >= offsets[i] | ||
| && (!offsets[i + 1] || scrollTop <= offsets[i + 1]) | ||
| && this.activate(targets[i]) | ||
| } | ||
| } | ||
|
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| ScrollSpy.prototype.activate = function (target) { | ||
| this.activeTarget = target | ||
|
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| $(this.selector) | ||
| .parentsUntil(this.options.target, '.active') | ||
| .removeClass('active') | ||
|
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| var selector = this.selector + | ||
| '[data-target="' + target + '"],' + | ||
| this.selector + '[href="' + target + '"]' | ||
|
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| var active = $(selector) | ||
| .parents('li') | ||
| .addClass('active') | ||
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| if (active.parent('.dropdown-menu').length) { | ||
| active = active | ||
| .closest('li.dropdown') | ||
| .addClass('active') | ||
| } | ||
|
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| active.trigger('activate.bs.scrollspy') | ||
| } | ||
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| // SCROLLSPY PLUGIN DEFINITION | ||
| // =========================== | ||
|
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| function Plugin(option) { | ||
| return this.each(function () { | ||
| var $this = $(this) | ||
| var data = $this.data('bs.scrollspy') | ||
| var options = typeof option == 'object' && option | ||
|
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| if (!data) $this.data('bs.scrollspy', (data = new ScrollSpy(this, options))) | ||
| if (typeof option == 'string') data[option]() | ||
| }) | ||
| } | ||
|
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| var old = $.fn.scrollspy | ||
|
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| $.fn.scrollspy = Plugin | ||
| $.fn.scrollspy.Constructor = ScrollSpy | ||
|
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| // SCROLLSPY NO CONFLICT | ||
| // ===================== | ||
|
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| $.fn.scrollspy.noConflict = function () { | ||
| $.fn.scrollspy = old | ||
| return this | ||
| } | ||
|
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| // SCROLLSPY DATA-API | ||
| // ================== | ||
|
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| $(window).on('load.bs.scrollspy.data-api', function () { | ||
| $('[data-spy="scroll"]').each(function () { | ||
| var $spy = $(this) | ||
| Plugin.call($spy, $spy.data()) | ||
| }) | ||
| }) | ||
|
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| }(jQuery); |
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