private void RemoveLayer(NvgLayerItem layerItem)
{
var mapView = _viewModel.FocusMapView;
if (null == mapView)
{
return;
}
// Remove the associated layer
mapView.Map.Layers.Remove(layerItem.MessageLayer);
}
/// <summary>
/// Processes all added NVG elements using the registered map view.
/// Make sure this method is called from the UI thread!
/// </summary>
public async void ProcessAllMessages()
{
var mapView = _viewModel.FocusMapView;
if (null == mapView)
{
return;
}
// Create a new message layer and wait till the layer was loaded
var messageLayer = new MessageLayer();
mapView.Map.Layers.Add(messageLayer);
await mapView.LayersLoadedAsync(new[] { messageLayer });
// Process all messages
ulong messageCount = 0;
var layerName = @"Message Layer";
foreach (var nvgElement in _nvgElements)
{
messageCount += ProcessAllMessages(nvgElement, messageLayer);
}
// If only one NVG element was processed use the filename as the layer name
if (1 == _nvgElements.Count)
{
var nvgFileMetadata = _nvgElements.First() as INvgFileMetadata;
if (null != nvgFileMetadata?.FileInfo)
{
layerName = nvgFileMetadata.FileInfo.Name;
}
}
var nvgLayerItem = new NvgLayerItem(messageLayer)
{
Name = layerName,
MessageCount = messageCount
};
LayerItems.Add(nvgLayerItem);
// Clear the elements
_nvgElements.Clear();
}
