Dynamically change Cluster marker icon

[buraktabn]

I can change the single Cluster easily by adding isSelected field into Place. When it comes to multiple Cluster, I found a workaround for now.

Future<Marker> Function(Cluster<Place>) get _markerBuilder => (cluster) async {
        return Marker(
          markerId: MarkerId(cluster.getId()),
          position: cluster.location,
          onTap: () => onMarkerPressed(cluster),
          icon: await _getMarkerBitmap(
            cluster.isMultiple,
            text: cluster.isMultiple ? cluster.count.toString() : null,
            isSelected: cluster.items.map((element) => element.isSelected).contains(true),
          ),
        );
      };

In my opinion, Cluster<T> should have a field called isSelected and ClusterManager<T extends ClusterItem> should have a function that updates the cluster by Cluster id. This way it would be easier to update Cluster. Does it make sense? If not, what would be the best practice here?

[bpillon]

Hello @buraktabn. I had the same problematic as you on a project. I implemented it with a variable that reference the active cluster by his id. I think the library goal is not to have a "selected" handling because how the selection works could really change depending on usage. Just an example I have in mind : How does it works when you move the map ? On one of my projects, I wanted the cluster to be unselected, in another one I wanted the opposite.