Add hasListener check around dispatchEvent calls

2022-02-09 22:05:18 +01:00
parent d35d1cc8ad
commit ac0b8ff4a4
3 changed files with 20 additions and 16 deletions
--- a/src/ol/source/Vector.js
+++ b/src/ol/source/Vector.js
@@ -457,10 +457,12 @@ class VectorSource extends Source {
      this.featuresRtree_.load(extents, geometryFeatures);
    }

-    for (let i = 0, length = newFeatures.length; i < length; i++) {
-      this.dispatchEvent(
-        new VectorSourceEvent(VectorEventType.ADDFEATURE, newFeatures[i])
-      );
+    if (this.hasListener(VectorEventType.ADDFEATURE)) {
+      for (let i = 0, length = newFeatures.length; i < length; i++) {
+        this.dispatchEvent(
+          new VectorSourceEvent(VectorEventType.ADDFEATURE, newFeatures[i])
+        );
+      }
    }
  }