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Keep track of tiles we're already listening on

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This commit is contained in:
Éric Lemoine
2012-11-11 21:31:12 +01:00
parent 826505c6d4
commit 7b88f44a41
1 changed files with 17 additions and 4 deletions
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21
src/ol/renderer/dom/domtilelayerrenderer.js
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@@ -32,6 +32,12 @@ ol.renderer.dom.TileLayer = function(mapRenderer, tileLayer, target) {
* @private
*/
this.renderedMapResolution_ = undefined;
/**
* @type {Object.<number, (number|null)>}
* @private
*/
this.tileChangeListenerKeys_ = {};
};
goog.inherits(ol.renderer.dom.TileLayer, ol.renderer.dom.Layer);
@@ -90,7 +96,11 @@ ol.renderer.dom.TileLayer.prototype.removeExtraTiles_ =
* @private
*/
ol.renderer.dom.TileLayer.prototype.handleTileChange_ = function(event) {
goog.asserts.assert(event.target.getState() == ol.TileState.LOADED);
var tile = /** @type {ol.Tile} */ (event.target);
goog.asserts.assert(tile.getState() == ol.TileState.LOADED);
var tileKey = goog.getUid(tile);
goog.asserts.assert(tileKey in this.tileChangeListenerKeys_);
delete this.tileChangeListenerKeys_[tileKey];
this.render();
};
@@ -139,9 +149,12 @@ ol.renderer.dom.TileLayer.prototype.render = function() {
tilesToDrawByZ[z][key] = tile;
return;
} else {
goog.events.listen(tile, goog.events.EventType.CHANGE,
this.handleTileChange_, false, this);
tile.load();
var tileKey = goog.getUid(tile);
if (!(tileKey in this.tileChangeListenerKeys_)) {
this.tileChangeListenerKeys_[tileKey] = goog.events.listen(tile,
goog.events.EventType.CHANGE, this.handleTileChange_, false, this);
tile.load();
}
}
/**