https://jitsi.org/wp-content/themes/jitsi/js/theme.js?ver=7.0.5

1// page init
2jQuery(function(){
3	initLoadMore();
4});
5
6// load more init
7function initLoadMore() {
8	jQuery('.load-more-holder').loadMore({
9		linkSelector: 'a.load-more',
10		additionBottomOffset: 50
11	});
12}
13
14/*
15 * jQuery Load More plugin
16 */
17 ;(function($, $win) {
18 	'use strict';
19
20 	var ScrollLoader = {
21 		attachEvents: function() {
22 			var self = this;
23
24 			$win.on('load.ScrollLoader resize.ScrollLoader orientationchange.ScrollLoader', function() { self.onResizeHandler(); });
25 			$win.on('scroll.ScrollLoader', function() { self.onScrollHandler(); });
26 			this.$holder.on('ContentLoader/loaded.ScrollLoader', function() { self.onResizeHandler(); });
27
28 			this.winProps = {};
29 			this.holderProps = {};
30 			this.onResizeHandler();
31 		},
32
33 		onResizeHandler: function() {
34 			this.winProps.height = $win.height();
35 			this.holderProps.height = this.$holder.outerHeight();
36 			this.holderProps.offset = this.$holder.offset().top;
37
38 			this.onScrollHandler();
39 		},
40
41 		onScrollHandler: function() {
42 			this.winProps.scroll = $win.scrollTop();
43
44 			if (this.winProps.scroll + this.winProps.height + Math.min(1, this.options.additionBottomOffset) > this.holderProps.height + this.holderProps.offset) {
45 				this.loadInclude();
46 			}
47 		},
48
49 		destroySubEvents: function() {
50 			$win.off('.ScrollLoader');
51 			this.$holder.off('.ScrollLoader');
52 		}
53 	};
54
55 	var ClickLoader = {
56 		attachEvents: function() {
57 			var self = this;
58
59 			this.$holder.on('click.ClickLoader', this.options.linkSelector, function(e) { self.onClickHandler(e); });
60 		},
61
62 		onClickHandler: function(e) {
63 			e.preventDefault();
64
65 			this.loadInclude();
66 		},
67
68 		destroySubEvents: function() {
69 			this.$holder.off('.ClickLoader');
70 		}
71 	};
72
73 	var ContentLoader = function($holder, options) {
74 		this.$holder = $holder;
75 		this.options = options;
76
77 		this.init();
78 	};
79
80 	var ContentLoaderProto = {
81 		init: function() {
82 			this.$link = this.$holder.find(this.options.linkSelector);
83 			this.$newContentTarget = this.options.newContentTarget ? this.$holder.find(this.options.newContentTarget) : this.$holder;
84
85 			if (!this.$link.length) {
86 				this.removeInstance();
87 				return;
88 			}
89
90 			this.attachEvents();
91 		},
92
93 		loadInclude: function() {
94 			if (this.isBusy) {
95 				return;
96 			}
97
98 			var self = this;
99
100 			this.toggleBusyMode(true);
101
102 			$.get(self.$link.attr('href'), function(source) { self.successHandler(source); });
103 		},
104
105 		successHandler: function(include) {
106 			var $tmpDiv = jQuery('<div>').html(include);
107 			var $nextIncludeLink = $tmpDiv.find(this.options.linkSelector);
108
109 			if ($nextIncludeLink.length) {
110 				this.refreshLink($nextIncludeLink);
111 			} else {
112 				this.destroy();
113 			}
114
115 			this.appendItems($tmpDiv.children());
116 		},
117
118 		appendItems: function($newItems) {
119 			var self = this;
120
121 			this.$newContentTarget.append($newItems.addClass(this.options.preAppendClass));
122
123 			setTimeout(function() { // need this timeout coz need some time for css preAppendClass applied to the new items
124 				$newItems.removeClass(self.options.preAppendClass);
125
126 				self.$holder.trigger('ContentLoader/loaded');
127 				self.toggleBusyMode(false);
128 			}, 100);
129
130			if (window.picturefill) {
131				window.picturefill();
132			}
133 		},
134
135 		refreshLink: function($nextIncludeLink) {
136 			this.$link.attr('href', $nextIncludeLink.attr('href'));
137 			$nextIncludeLink.remove();
138 		},
139
140 		toggleBusyMode: function(state) {
141 			this.$holder.toggleClass(this.options.busyClass, state);
142 			this.isBusy = state;
143 		},
144
145 		removeInstance: function() {
146 			this.$holder.removeData('ContentLoader');
147 		},
148
149 		destroy: function() {
150 			this.removeInstance();
151 			this.destroySubEvents();
152
153 			this.$link.remove();
154 		}
155 	};
156
157 	$.fn.loadMore = function(options) {
158 		options = $.extend({
159 			scroll: false,
160 			linkSelector: '.load-more',
161 			newContentTarget: '.community-news-block',
162 			busyClass: 'is-busy',
163 			additionBottomOffset: 50,
164 			preAppendClass: 'new-item'
165 		}, options);
166 		
167 		return this.each(function() {
168 			var $holder = $(this);
169
170 			ContentLoader.prototype = $.extend(options.scroll ? ScrollLoader : ClickLoader, ContentLoaderProto);
171
172 			$holder.data('ContentLoader', new ContentLoader($holder, options));
173 		});
174 	};
175 }(jQuery, jQuery(window)));