@@ -12,12 +12,9 @@ export default function DLL (element,callbackFn){
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// callback
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callbackFn = typeof callbackFn === 'function' ? callbackFn : null ; // callback function
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-
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- // bind
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- let self = this ,
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- // element's src attribute
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- elementSRC = element && element . getAttribute ( 'data-src' ) || null , //element has own data-src attribute
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+ // element's src attribute
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+ let elementSRC = element && element . getAttribute ( 'data-src' ) || null , //element has own data-src attribute
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// private method
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getElements = function ( ) { // we get images of a given object or itself
@@ -36,32 +33,32 @@ export default function DLL (element,callbackFn){
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Array . from ( queue ) . map ( x => mediaItems . push ( x ) )
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return mediaItems ;
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- } ;
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+ } ,
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- // public methods
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- self . load = function ( mediaElement , imageCallback ) {
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- var isVideo = mediaElement . tagName === 'SOURCE' ,
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- loadMethod = isVideo ? 'onloadstart' : 'onload' ,
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- loadEvent = isVideo ? 'loadstart' : 'load' ,
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- newVideo = isVideo ? document . createElement ( 'VIDEO' ) : 0 ,
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- mediaObject = isVideo ? document . createElement ( 'SOURCE' ) : new Image ( ) ,
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- loadTarget = isVideo ? newVideo : mediaObject ,
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- src = mediaElement . getAttribute ( 'data-src' ) ;
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+ // public methods
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+ load = function ( mediaElement , imageCallback ) {
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+ var isVideo = mediaElement . tagName === 'SOURCE' ,
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+ loadMethod = isVideo ? 'onloadstart' : 'onload' ,
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+ loadEvent = isVideo ? 'loadstart' : 'load' ,
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+ newVideo = isVideo ? document . createElement ( 'VIDEO' ) : 0 ,
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+ mediaObject = isVideo ? document . createElement ( 'SOURCE' ) : new Image ( ) ,
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+ loadTarget = isVideo ? newVideo : mediaObject ,
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+ src = mediaElement . getAttribute ( 'data-src' ) ;
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- one ( loadTarget , loadEvent , ( ) => {
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- if ( mediaElement . tagName === 'IMG' ) { mediaElement . src = src ; } // 'IMG'
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- else if ( mediaElement . tagName === 'SOURCE' ) { // 'VIDEO' 'SOURCE'
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- mediaElement . src = src ;
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- mediaElement . parentNode . load ( ) ;
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- }
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- else { mediaElement . style . backgroundImage = 'url("' + src + '")' ; } // background-image
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- mediaElement . removeAttribute ( 'data-src' ) ;
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- imageCallback && imageCallback ( ) ;
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- } )
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- mediaObject . src = src ;
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- newVideo && ( newVideo . appendChild ( mediaObject ) ) ;
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+ one ( loadTarget , loadEvent , ( ) => {
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+ if ( mediaElement . tagName === 'IMG' ) { mediaElement . src = src ; } // 'IMG'
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+ else if ( mediaElement . tagName === 'SOURCE' ) { // 'VIDEO' 'SOURCE'
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+ mediaElement . src = src ;
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+ mediaElement . parentNode . load ( ) ;
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+ }
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+ else { mediaElement . style . backgroundImage = 'url("' + src + '")' ; } // background-image
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+ mediaElement . removeAttribute ( 'data-src' ) ;
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+ imageCallback && imageCallback ( ) ;
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+ } )
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+ mediaObject . src = src ;
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+ newVideo && ( newVideo . appendChild ( mediaObject ) ) ;
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- }
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+ }
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// init
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tryWrapper ( ( ) => {
@@ -70,9 +67,9 @@ export default function DLL (element,callbackFn){
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mediaTargets . map ( ( x , i ) => {
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if ( i === mediaTargets . length - 1 && callbackFn ) {
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- self . load ( x , callbackFn ) ;
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+ load ( x , callbackFn ) ;
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} else {
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- self . load ( x )
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+ load ( x )
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}
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} )
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}
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