google_maps_flutter: modified behavior to use imperative map updates

Author: androidseb

packages/google_maps_flutter/google_maps_flutter/lib/google_maps_flutter.dart

@@ -48,3 +48,5 @@ export 'package:google_maps_flutter_platform_interface/google_maps_flutter_platf
 
 part 'src/controller.dart';
 part 'src/google_map.dart';
+// MOD imperative map updates (added the line below)
+part 'src/mod_imperative_map_updates.dart';

packages/google_maps_flutter/google_maps_flutter/lib/src/controller.dart

@@ -35,6 +35,11 @@ class GoogleMapController {
   }
 
   final _GoogleMapState _googleMapState;
+  // MOD imperative map updates (added those 4 fields)
+  late final _GoogleMapStateMarkersUpdateHandler _markersUpdateHandler = _GoogleMapStateMarkersUpdateHandler(this);
+  late final _GoogleMapStatePolylinesUpdateHandler _polylinesUpdateHandler = _GoogleMapStatePolylinesUpdateHandler(this);
+  late final _GoogleMapStatePolygonsUpdateHandler _polygonsUpdateHandler = _GoogleMapStatePolygonsUpdateHandler(this);
+  late final _GoogleMapStateCirclesUpdateHandler _circlesUpdateHandler = _GoogleMapStateCirclesUpdateHandler(this);
 
   void _connectStreams(int mapId) {
     if (_googleMapState.widget.onCameraMoveStarted != null) {

packages/google_maps_flutter/google_maps_flutter/lib/src/google_map.dart

@@ -377,10 +377,11 @@ class _GoogleMapState extends State<GoogleMap> {
   void didUpdateWidget(GoogleMap oldWidget) {
     super.didUpdateWidget(oldWidget);
     _updateOptions();
-    _updateMarkers();
-    _updatePolygons();
-    _updatePolylines();
-    _updateCircles();
+    // MOD imperative map updates (commented the lines below)
+    //_updateMarkers();
+    //_updatePolygons();
+    //_updatePolylines();
+    //_updateCircles();
     _updateTileOverlays();
   }