ashatora/openlayers
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Uncache images that are no longer valid

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When a layer sets a cached image's className to something else than
.olTileImage (e.g. by setting .olTileReplacing), we should not keep the
image in the cache any more, because it may no longer be valid.
This commit is contained in:
ahocevar
2013-02-01 00:58:40 +01:00
parent 69061d3f3d
commit 378a0e97b5
1 changed files with 9 additions and 2 deletions
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11
lib/OpenLayers/TileManager.js
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@@ -315,9 +315,16 @@ OpenLayers.TileManager = OpenLayers.Class({
var tile = evt.object;
var queued = false;
var layer = tile.layer;
var url = layer.getURL(tile.bounds);
var img = this.tileCache[url];
if (img && img.className !== 'olTileImage') {
// cached image no longer valid, e.g. because we're olTileReplacing
delete this.tileCache[url];
OpenLayers.Util.removeItem(this.tileCacheIndex, url);
img = null;
}
// queue only if image with same url not cached already
if (layer.url && (layer.async ||
!this.tileCache[layer.getURL(tile.bounds)])) {
if (layer.url && (layer.async || !img)) {
// add to queue only if not in queue already
var tileQueue = this.tileQueue[layer.map.id];
if (!~OpenLayers.Util.indexOf(tileQueue, tile)) {