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Worked around iOS mobile Safari browser bug which leaks memory… #365

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Worked around iOS mobile Safari browser bug which leaks memory… #365

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20 changes: 15 additions & 5 deletions src/galleria.js
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Original file line number Diff line number Diff line change
Expand Up @@ -6157,11 +6157,18 @@ Galleria.Picture.prototype = {
*/

preload: function( src ) {
$( new Image() ).load((function(src, cache) {
return function() {
cache[ src ] = src;
};
}( src, this.cache ))).attr( 'src', src );
// Create a new Image; register a callback for onload
// that adds an entry in the Galleria.Picture cache
// indicating that src is already loaded; then set
// the 'src' attribute to actually start loading.
$( new Image() ).load(function() {
// Add to cache since loading of src has completed
Galleria.Picture.prototype.cache[ src ] = 1;
// Clear out the 'src' attribute when done to work around a mobile Safari
// bug that results in a memory leak if an Image object's 'src' is
// left referencing an image.
this.src = '';
}).attr( 'src', src );
},

/**
Expand Down Expand Up @@ -6314,6 +6321,9 @@ Galleria.Picture.prototype = {
};
}( this, callback, src ));

// http://stackoverflow.com/a/3993689/5299483 - clear out 'src' attribute
// to free mobile Safari memory
$container.find('img').attr('src', '');
// remove any previous images
$container.find( 'iframe,img' ).remove();

Expand Down