46 lines
860 B
JavaScript
46 lines
860 B
JavaScript
/*global define*/
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define(
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function()
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{
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var signals;
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var image;
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var initialized = false;
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var defaultimage = document.body.getAttribute( 'data-defaultimage' );
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function init( shared )
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{
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signals = shared.signals;
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image = new Image();
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signals['set-new-src'].add( setSrc );
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image.addEventListener( 'load', imageLoaded, false );
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// the image "Abraham Lincoln November 1863" is public domain:
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// https://en.wikipedia.org/wiki/File:Abraham_Lincoln_November_1863.jpg
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setSrc( defaultimage );
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}
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function imageLoaded()
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{
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signals['image-loaded'].dispatch( image );
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initialized = true;
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}
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function setSrc( src )
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{
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image.src = src;
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if (
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initialized &&
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image.naturalWidth !== undefined &&
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image.naturalWidth !== 0
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)
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{
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setTimeout( imageLoaded, 10 );
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}
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}
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return { init: init };
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}
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); |