Fix measure behaviour handling of adding/clearing features. #196

Fixes #195
farmOS · May 11, 2023 · 6176792 · 6176792
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -6,6 +6,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+
+- Fix #195 measure behaviour handling of adding/clearing features. #196
+
 ## [v2.2.0] - 2023-05-10
 
 ### Added

diff --git a/package-lock.json b/package-lock.json
diff --git a/src/behavior/measure.js b/src/behavior/measure.js
@@ -134,6 +134,16 @@ export default {
       createMeasure(feature);
     });
 
+    // Remove any stale measurements if the drawing layer gets cleared
+    layer.getSource().on('clear', () => {
+      stopMeasure();
+    });
+
+    // Add measurements for features which are added directly to the drawing layer
+    layer.getSource().on('addfeature', (evt) => {
+      startMeasure(evt.feature);
+    });
+
     // If the instance has an Edit control, attach listeners to the map
     // interactions so that we can apply measurements to the features.
     if (instance.edit) {