https://brewhalla.co/wp-content/plugins/tatsu/public/js/helpers.js?ver=3.5.3

1/*
2 * debouncedresize: special jQuery event that happens once after a window resize
3 *
4 * latest version and complete README available on Github:
5 * https://github.com/louisremi/jquery-smartresize
6 *
7 * Copyright 2012 @louis_remi
8 * Licensed under the MIT license.
9 */
10(function($) {
11	"use strict";
12
13    var $event = $.event,
14        $special,
15        resizeTimeout;
16    
17    $special = $event.special.debouncedresize = {
18        setup: function() {
19            $( this ).on( "resize", $special.handler );
20        },
21        teardown: function() {
22            $( this ).off( "resize", $special.handler );
23        },
24        handler: function( event, execAsap ) {
25            // Save the context
26            var context = this,
27                args = arguments,
28                dispatch = function() {
29                    // set correct event type
30                    event.type = "debouncedresize";
31                    $event.dispatch.apply( context, args );
32                };
33    
34            if ( resizeTimeout ) {
35                clearTimeout( resizeTimeout );
36            }
37    
38            execAsap ?
39                dispatch() :
40                resizeTimeout = setTimeout( dispatch, $special.threshold );
41        },
42        threshold: 150
43    };
44    
45})(jQuery);
46
47
48/**
49 * Simple throttle function
50 */
51(function($) {
52	"use strict";
53
54    $.throttle = function(cb, threshold) {
55        var last = null,
56            threshold = threshold || 200;
57        return function() {
58            if( null == last ) {
59                last = +new Date;
60                cb.call(this, arguments);
61            }else {
62                var now = +new Date;
63                if( last + threshold < now ) {
64                    last = now;
65                    cb.call(this, arguments);
66                }
67            }
68        }
69    }
70})(jQuery);
71
72
73/**
74 * Simple Debounce function
75 */
76(function($) {
77	"use strict";
78
79    $.debounce = function debounce(func, wait, immediate) {
80        var timeout;
81        return function() {
82            var context = this, args = arguments;
83            var later = function() {
84                timeout = null;
85                if (!immediate) func.apply(context, args);
86            };
87            var callNow = immediate && !timeout;
88            clearTimeout(timeout);
89            timeout = setTimeout(later, wait);
90            if (callNow) func.apply(context, args);
91        };
92    };
93})(jQuery);
94
95/**
96 * youtube player api
97 */
98(function($) {
99	"use strict";
100	
101    if( jQuery('.be-youtube-embed').length ){
102        var tag = document.createElement('script');
103        tag.src = "https://www.youtube.com/iframe_api";
104        var firstScriptTag = document.getElementsByTagName('script')[0];
105        firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);
106        var previousAPIReadyCallback = window.onYouTubeIframeAPIReady;
107        window.onYouTubeIframeAPIReady =  function() {
108            if( 'function' == typeof previousAPIReadyCallback ) {
109                previousAPIReadyCallback();
110            }
111            $(document).trigger( 'YTAPIReady' );
112        }   
113    }
114})(jQuery);
115
116
117/**
118 * Checks if element is inside viewport
119 */
120(function( $ ) {
121    "use strict";
122    var $window = $(window);
123    $.fn.isVisible = function( threshold ) {
124        var $el = $(this),
125            wt = $window.scrollTop(),
126            wb = wt + window.innerHeight,
127            et = $el.offset().top,
128            eb = et + $el.height(),
129            topThreshold = wt - threshold,
130            bottomThreshold = wb + threshold;
131        return ( eb >= topThreshold && eb <= bottomThreshold ) || ( et <= bottomThreshold && et >= topThreshold );
132    };
133})( jQuery );
134
135/**
136 * Lazy load
137 */
138(function( $ ){
139	"use strict";
140    var imagesToLoad = $( '.be-lazy-load' ),
141        add = function( images ) {
142            if( null != images && 0 < images.length ) {
143                imagesToLoad = imagesToLoad.add( images );
144            }
145        },
146        lazyLoad = function() {
147            if( 0 < imagesToLoad.length ) {
148                var visibleImages = imagesToLoad.filter( function(i, el) {
149                    return $(this).isVisible( 200 );
150                });
151                if( 0 < visibleImages.length ) {
152                    visibleImages.one( 'load', function() {
153                        $(this).addClass( 'be-lazy-loaded' );
154                    }).each( function( el ) {
155                        var curEl = $(this);
156                        curEl.attr( 'src', curEl.attr( 'data-src' ) );
157                    });
158                    imagesToLoad = imagesToLoad.not( visibleImages );
159                }
160            }
161        };
162    $(window).on( 'scroll', function() {
163        lazyLoad();
164    });
165    window.BeLazyLoad =  {
166        add : add,
167        lazyLoad : lazyLoad
168    };
169    $(function(){
170        imagesToLoad = $( '.be-lazy-load' );
171        lazyLoad();
172    });
173}(jQuery))