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Introduce clear event on vector source

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Three seconds speed up when clearing 100'000 features.
Clearing is now around 350ms.
This commit is contained in:
Guillaume Beraudo
2014-12-05 14:55:46 +01:00
parent 3e2cc3c246
commit 17e56d8357
2 changed files with 25 additions and 8 deletions
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25
src/ol/source/vectorsource.js
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@@ -37,7 +37,14 @@ ol.source.VectorEventType = {
CHANGEFEATURE: 'changefeature',
/**
* Triggered when a feature is removed from the source.
* Triggered when a clear is called on the source.
* @event ol.source.VectorEvent#clear
* @api
*/
CLEAR: 'clear',
/**
* Triggered when a single feature is removed from the source.
* @event ol.source.VectorEvent#removefeature
* @api stable
*/
@@ -230,12 +237,18 @@ ol.source.Vector.prototype.addFeaturesInternal = function(features) {
* @api stable
*/
ol.source.Vector.prototype.clear = function() {
this.rBush_.forEach(this.removeFeatureInternal, this);
for (var featureId in this.featureChangeKeys_) {
var keys = this.featureChangeKeys_[featureId];
goog.array.forEach(keys, goog.events.unlistenByKey);
}
this.featureChangeKeys_ = {};
this.idIndex_ = {};
this.undefIdIndex_ = {};
this.rBush_.clear();
goog.object.forEach(
this.nullGeometryFeatures_, this.removeFeatureInternal, this);
goog.object.clear(this.nullGeometryFeatures_);
goog.asserts.assert(goog.object.isEmpty(this.featureChangeKeys_));
this.nullGeometryFeatures_ = {};
var clearEvent = new ol.source.VectorEvent(ol.source.VectorEventType.CLEAR);
this.dispatchEvent(clearEvent);
this.changed();
};