tablet-app/lib/Screens/Map/flutter_map_view.dart

import 'package:flutter/material.dart';
import 'package:flutter_map/flutter_map.dart';
import 'package:latlong2/latlong.dart';
import 'package:manager_api/api.dart';
import 'package:provider/provider.dart';
import 'package:tablet_app/Models/tabletContext.dart';
import 'package:tablet_app/Screens/Map/map_context.dart';
import 'package:tablet_app/app_context.dart';
import 'package:html/parser.dart' show parse;
import 'package:latlong2/latlong.dart' as ll;

class FlutterMapView extends StatefulWidget {
  final MapDTO? mapDTO;
  final List<GeoPointDTO> geoPoints;
  final List<Map<String, dynamic>> icons;
  final String? language;
  const FlutterMapView({
    Key? key,
    this.mapDTO,
    required this.geoPoints,
    required this.icons,
    this.language,
  }) : super(key: key);

  @override
  _FlutterMapViewState createState() => _FlutterMapViewState();
}

class _FlutterMapViewState extends State<FlutterMapView> {
  late List<GeoPointDTO> markersList;
  late List<Marker> markers;
  bool filterZoneSelected = false;
  MapController? mapController;

  List<Marker> createPoints(mapContext) {
    markersList = [];
    markers = [];

    int i = 0;
    widget.geoPoints.forEach((point) {
      if (point.title!.where((translation) => translation.language == widget.language).isNotEmpty) {
        var textSansHTML = parse(point.title!.firstWhere((translation) => translation.language == widget.language).value);
        point.id = i;
        point.title = point.title!.where((t) => t.language == widget.language).toList();
        markersList.add(point);

        //var icon = point.categorie == null ? BitmapDescriptor.fromBytes(widget.icons.where((i) => i['id'] == null).first['icon']) : widget.icons.any((i) => i['id'] == point.categorieId) ? BitmapDescriptor.fromBytes(widget.icons.where((i) => i['id'] == point.categorieId).first['icon']) : BitmapDescriptor.fromBytes(widget.icons.where((i) => i['id'] == null).first['icon']); //widget.selectedMarkerIcon,;

        markers.add(
          Marker(
            width: 80.0,
            height: 80.0,
            point: LatLng(double.tryParse(point.latitude!)!, double.tryParse(point.longitude!)!),
            child: GestureDetector(
              onTap: () {
                /*final mapContext = Provider.of<MapContext>(context, listen: false);
                mapContext.setSelectedPoint(point);
                mapContext.setSelectedPointForNavigate(point);*/
                mapContext.setSelectedPoint(point);
                mapContext.setSelectedPointForNavigate(point);
              },
              child: widget.icons.firstWhere((i) => i['id'] == point.categorieId, orElse: () => widget.icons.first)['icon'] != null ? Image.memory(widget.icons.firstWhere((i) => i['id'] == point.categorieId, orElse: () => widget.icons.first)['icon']) : Icon(Icons.pin_drop, color: Colors.red),//widget.icons.firstWhere((i) => i['id'] == point.categorieId, orElse: () => widget.icons.first)['icon'],
            )
          ),
        );
        i++;
      }
    });

    return markers;
  }

  @override
  void initState() {
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    final mapContext = Provider.of<MapContext>(context);
    final appContext = Provider.of<AppContext>(context);
    TabletAppContext tabletAppContext = appContext.getContext() as TabletAppContext;

    markers = createPoints(mapContext);

    if (mapController == null) { // mapContext.getSelectedPointForNavigate() != null
      /*var geoPoint = mapContext.getSelectedPointForNavigate();
      var center = LatLng(double.tryParse(geoPoint.latitude!)!, double.tryParse(geoPoint.longitude!)!);*/
      mapController = MapController();

      //mapController!.move(center, widget.mapDTO!.zoom != null ? widget.mapDTO!.zoom!.toDouble() : 12);
      mapContext.setSelectedPointForNavigate(null);  // Reset after navigation
    }

    return Stack(
      children: [
        FlutterMap(
          mapController: mapController,
          options: MapOptions(
            initialCenter: widget.mapDTO!.longitude != null && widget.mapDTO!.latitude != null ? ll.LatLng(double.tryParse(widget.mapDTO!.latitude!)!, double.tryParse(widget.mapDTO!.longitude!)!) : ll.LatLng(4.865105, 50.465503), //.toJson()
            initialZoom: widget.mapDTO!.zoom != null ? widget.mapDTO!.zoom!.toDouble() : 12,
            onTap: (Tap, lnt) => {
              mapContext.setSelectedPointForNavigate(null),
              mapContext.setSelectedPoint(null),
            }
          ),
          children: [
            TileLayer(
              urlTemplate: "https://mt1.google.com/vt/lyrs=m&x={x}&y={y}&z={z}",
              userAgentPackageName: 'be.unov.myinfomate.tablet',
            ),
            MarkerLayer(
              markers: markers
            ),
          ],
        ),
        Container(
          child: Builder(
              builder: (context) {
                return Consumer<MapContext>(
                  builder: (context, mapContext, _) {
                    var geoPoint = mapContext.getSelectedPointForNavigate() as GeoPointDTO?;
                    if (geoPoint != null && mapController != null) {
                      print("COUCOU IL FAUT NAVIGATE FLUTTER MAP");
                      mapController!.move(LatLng(double.tryParse(geoPoint.latitude!)!, double.tryParse(geoPoint.longitude!)!), 16);
                    }
                    return SizedBox();
                  },
                );
              }
          ),
        )
      ],
    );
  }
}