// Called when the visibility of the DockPane changes.
protected override void OnShow(bool isVisible)
{
if (isVisible && _eventToken == null) //Subscribe to event when dockpane is visible
{
_eventToken = MapSelectionChangedEvent.Subscribe(OnMapSelectionChangedEvent);
_toceventToken = TOCSelectionChangedEvent.Subscribe(OnTOCSelectionChangeEvent);
}
if (!isVisible && _eventToken != null) //Unsubscribe as the dockpane closes.
{
MapSelectionChangedEvent.Unsubscribe(_eventToken);
TOCSelectionChangedEvent.Unsubscribe(_toceventToken);
_eventToken = null;
}
}
private async void OnMapClosed(MapClosedEventArgs args)
{
LayersAddedEvent.Unsubscribe(OnLayersAdded);
LayersMovedEvent.Unsubscribe(OnLayersMoved);
LayersRemovedEvent.Unsubscribe(OnLayersRemoved);
MapMemberPropertiesChangedEvent.Unsubscribe(OnMapMemberPropertiesChanged);
TOCSelectionChangedEvent.Unsubscribe(OnTocSelectionChanged);
ActiveToolChangedEvent.Unsubscribe(OnActiveToolChangedEvent);
EditCompletedEvent.Unsubscribe(OnEditCompleted);
DrawCompleteEvent.Unsubscribe(OnDrawCompleted);
DrawStartedEvent.Unsubscribe(OnDrawStarted);
while (Count >= 1)
{
VectorLayer vectorLayer = this[0];
await RemoveLayer(vectorLayer);
}
}