update: tile selection in map widget, partial implementation

app/lib/pages/widgets/cloropleth_map.dart

@@ -21,11 +21,13 @@ class IceThicknessModel {
 class ChoroplethMap extends StatefulWidget {
   const ChoroplethMap({Key? key,
     required this.relation,
-    required this.measurements
+    required this.measurements,
+    required this.onSelectionChanged,
   }) : super(key: key);
 
   final Uint8List relation;
   final List<Measurement> measurements;
+  final void Function(int selectedIndex) onSelectionChanged; // Callback function
 
   @override
   _ChoroplethMapState createState() => _ChoroplethMapState();
@@ -84,7 +86,7 @@ class _ChoroplethMapState extends State<ChoroplethMap> {
                     iceThicknessList[i].color = i == index ? Colors.red : iceThicknessList[i].savedColor;
                   }
                 });
-                print("Selection triggered");
+                widget.onSelectionChanged(selectedIndex);
               },
               selectionSettings: MapSelectionSettings(
                 color: Colors.orange,

app/lib/pages/widgets/map_widget.dart

@@ -28,6 +28,7 @@ class MapContainerWidget extends StatefulWidget {
 class _MapContainerWidgetState extends State<MapContainerWidget> {
 
   Measurement? selectedMarker;  // Containing data for selected marker
+  int selectedMarkerIndex = 0;
   bool isMinimized = true;      // Quick view box state tacker
   bool satLayer = false;        // Satellite layer visibility tracker
   bool isTapped = false;        // Button tap state tracker
@@ -53,10 +54,17 @@ class _MapContainerWidgetState extends State<MapContainerWidget> {
     }
   }
 
+  // Tile selection handler
+  void handleSelection(int index) {
+    setState(() {
+      selectedMarkerIndex = index;
+    });
+  }
+
   @override
   Widget build(BuildContext context) {
     // Initialise selectedMarker to first element in markerList
-    selectedMarker ??= widget.markerList[0];
+    selectedMarker ??= widget.markerList[selectedMarkerIndex];
 
     checkAndSetLastUpdate();
 
@@ -154,7 +162,10 @@ class _MapContainerWidgetState extends State<MapContainerWidget> {
                     height: screenWidth * boxHeight,
                     child: Padding(
                       padding: const EdgeInsets.all(15.0), // Padding around map
-                      child: ChoroplethMap(relation: widget.relation, measurements: widget.markerList,),
+                      child: ChoroplethMap(
+                        relation: widget.relation,
+                        measurements: widget.markerList,
+                        onSelectionChanged: handleSelection,),
                     ),
                   ),
                   Positioned( // Quick view box layered over map