private async Task SetMarkerListeners()
{
if (_listeningLoneMarkerKeys == null)
{
_listeningLoneMarkerKeys = new List <string>();
}
//use GetMappedValue<T> to map and extract the array of guid keys of unclustered markers
GoogleMapsComponents.JsObjectRef jsRef = new GoogleMapsComponents.JsObjectRef(JsObjectRef, _markerClustering.Guid);
var guidStrings = (await jsRef.GetMappedValue <List <string> >("clusters", "marker", "guidString"))
.Where((x) => { return(x != null); });
if (!guidStrings.Any())
{
return;
}
// Among markers not in clusters, find those which don't yet have a listener
MarkerList deafLoneMarkersList = await MarkerList.CreateAsync(JsObjectRef, new Dictionary <string, MarkerOptions>());
foreach (var key in guidStrings)
{
var markr = markers.First(x => key == x.Guid.ToString());
if (_listeningLoneMarkerKeys.Contains(key))
{
continue;
}
deafLoneMarkersList.BaseListableEntities.Add(key, markr);
_listeningLoneMarkerKeys.Add(key);
}
if (!deafLoneMarkersList.BaseListableEntities.Any())
{
return;
}
await deafLoneMarkersList.AddListeners <MouseEvent>(deafLoneMarkersList.Markers.Keys.ToList(), "click", async (o, e) =>
{
//await JsObjectRef.InvokeVoidAsync("loneMarkerClickEvent", e);
});
// if all points set, clean up idle listener.
if (_listeningLoneMarkerKeys.Count == markers.Count)
{
_listeningLoneMarkerKeys = null;
await _markerClustering.ClearListeners("clusteringend");
}
}
private async Task AddMarkersGroup(IEnumerable <LatLngLiteral> coordinates)
{
if (_markerList == null)
{
_markerList = await MarkerList.CreateAsync(
map1.JsRuntime,
coordinates.ToDictionary(s => Guid.NewGuid().ToString(), y => new MarkerOptions()
{
Position = new LatLngLiteral()
{
Lng = y.Lng, Lat = y.Lat
},
Map = map1.InteropObject,
//Icon = new Icon() { Url = s.MarkerIconPath, ScaledSize = iconSize, Anchor = iconAnchor },
Clickable = true,
Title = Guid.NewGuid().ToString(),
Visible = true
})
);
}
else
{
var cordDic = coordinates.ToDictionary(s => Guid.NewGuid().ToString(), y => new MarkerOptions()
{
Position = new LatLngLiteral()
{
Lng = y.Lng, Lat = y.Lat
},
Map = map1.InteropObject,
//Icon = new Icon() { Url = s.MarkerIconPath, ScaledSize = iconSize, Anchor = iconAnchor },
Clickable = true,
Title = Guid.NewGuid().ToString(),
Visible = true
});
await _markerList.AddMultipleAsync(cordDic);
}
foreach (var latLngLiteral in coordinates)
{
await bounds.Extend(latLngLiteral);
}
await FitBounds();
}
