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3 4/* 5This plugin extends lazySizes to lazyLoad: 6background images, videos/posters and scripts 7Background-Image: 8For background images, use data-bg attribute: 9<div class="lazyload" data-bg="bg-img.jpg"></div> 10 Video: 11 For video/audio use data-poster and preload="none": 12 <video class="lazyload" preload="none" data-poster="poster.jpg" src="src.mp4"> 13 <!-- sources --> 14 </video> 15 For video that plays automatically if in view: 16 <video 17 class="lazyload" 18 preload="none" 19 muted="" 20 data-autoplay="" 21 data-poster="poster.jpg" 22 src="src.mp4"> 23</video> 24 Scripts: 25 For scripts use data-script: 26 <div class="lazyload" data-script="module-name.js"></div> 27 Script modules using require: 28 For modules using require use data-require: 29 <div class="lazyload" data-require="module-name"></div> 30*/ 31 32(function(window, factory) { 33 var globalInstall = function(){ 34 factory(window.lazySizes); 35 window.removeEventListener('lazyunveilread', globalInstall, true); 36 }; 37 38 factory = factory.bind(null, window, window.document); 39 40 if(typeof module == 'object' && module.exports){ 41 factory(require('lazysizes')); 42 } else if (typeof define == 'function' && define.amd) { 43 define(['lazysizes'], factory); 44 } else if(window.lazySizes) { 45 globalInstall(); 46 } else { 47 window.addEventListener('lazyunveilread', globalInstall, true); 48 } 49}(window, function(window, document, lazySizes) { 50 /*jshint eqnull:true */ 51 'use strict'; 52 var bgLoad, regBgUrlEscape; 53 var uniqueUrls = {}; 54 55 if(document.addEventListener){ 56 regBgUrlEscape = /\(|\)|\s|'/; 57 58 bgLoad = function (url, cb){ 59 var img = document.createElement('img'); 60 img.onload = function(){ 61 img.onload = null; 62 img.onerror = null; 63 img = null; 64 cb(); 65 }; 66 img.onerror = img.onload; 67 68 img.src = url; 69 70 if(img && img.complete && img.onload){ 71 img.onload(); 72 } 73 }; 74 75 addEventListener('lazybeforeunveil', function(e){ 76 if(e.detail.instance != lazySizes){return;} 77 78 var tmp, load, bg, poster; 79 if(!e.defaultPrevented) { 80 81 var target = e.target; 82 83 if(target.preload == 'none'){ 84 target.preload = target.getAttribute('data-preload') || 'auto'; 85 } 86 87 if (target.getAttribute('data-autoplay') != null) { 88 if (target.getAttribute('data-expand') && !target.autoplay) { 89 try { 90 target.play(); 91 } catch (er) {} 92 } else { 93 requestAnimationFrame(function () { 94 target.setAttribute('data-expand', '-10'); 95 lazySizes.aC(target, lazySizes.cfg.lazyClass); 96 }); 97 } 98 } 99 100 tmp = target.getAttribute('data-link'); 101 if(tmp){ 102 addStyleScript(tmp, true); 103 } 104 105 // handle data-script 106 tmp = target.getAttribute('data-script'); 107 if(tmp){ 108 addStyleScript(tmp); 109 } 110 111 // handle data-require 112 tmp = target.getAttribute('data-require'); 113 if(tmp){ 114 if(lazySizes.cfg.requireJs){ 115 lazySizes.cfg.requireJs([tmp]); 116 } else { 117 addStyleScript(tmp); 118 } 119 } 120 121 // handle data-bg 122 bg = target.getAttribute('data-bg'); 123 if (bg) { 124 e.detail.firesLoad = true; 125 load = function(){ 126 target.style.backgroundImage = 'url(' + (regBgUrlEscape.test(bg) ? JSON.stringify(bg) : bg ) + ')'; 127 e.detail.firesLoad = false;
128 lazySizes.fire(target, '_lazyloaded', {}, true, true); 129 }; 130 131 bgLoad(bg, load); 132 } 133 134 // handle data-poster 135 poster = target.getAttribute('data-poster'); 136 if(poster){ 137 e.detail.firesLoad = true; 138 load = function(){ 139 target.poster = poster; 140 e.detail.firesLoad = false; 141 lazySizes.fire(target, '_lazyloaded', {}, true, true); 142 }; 143 144 bgLoad(poster, load); 145 146 } 147 } 148 }, false); 149 150 } 151 152 function addStyleScript(src, style){ 153 if(uniqueUrls[src]){ 154 return; 155 } 156 var elem = document.createElement(style ? 'link' : 'script'); 157 var insertElem = document.getElementsByTagName('script')[0]; 158 159 if(style){ 160 elem.rel = 'stylesheet'; 161 elem.href = src; 162 } else { 163 elem.src = src; 164 } 165 uniqueUrls[src] = true; 166 uniqueUrls[elem.src || elem.href] = true; 167 insertElem.parentNode.insertBefore(elem, insertElem); 168 } 169}));
Line numbers count LF bytes from the start of the resource, as the search results do. Vendor segments are library code the classifier recognised; they are stored but not indexed. Bytes are shown as Latin1 characters, one per byte.