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fix: preload did not take into account the wrapAround option #760

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fix: preload did not take into account the wrapAround option #760

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19 changes: 12 additions & 7 deletions src/js/lightbox.js
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Original file line number Diff line number Diff line change
Expand Up @@ -510,13 +510,18 @@

// Preload previous and next images in set.
Lightbox.prototype.preloadNeighboringImages = function() {
if (this.album.length > this.currentImageIndex + 1) {
var preloadNext = new Image();
preloadNext.src = this.album[this.currentImageIndex + 1].link;
}
if (this.currentImageIndex > 0) {
var preloadPrev = new Image();
preloadPrev.src = this.album[this.currentImageIndex - 1].link;
var indexes = [ this.currentImageIndex - 1, this.currentImageIndex + 1 ];
for (var i = 0; i < 2; i++) {
var index = indexes[i];
if (index >= this.album.length) {
if (!this.options.wrapAround) continue;
index = 0;
} else if (index < 0) {
if (!this.options.wrapAround) continue;
index = this.album.length - 1;
}
var preload = new Image();
preload.src = this.album[index].link;
}
};

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