public static MapLayersWindow GetInstance()
{
if (_instance == null)
{
_instance = new MapLayersWindow();
}
return(_instance);
}
private void Cleanup()
{
if (MapWindowManager.MapLayersHandler != null)
{
MapWindowManager.MapLayersViewModel.LayerRead -= MapLayersViewModel_LayerRead;
MapWindowManager.MapLayersViewModel.LayerRemoved -= MapLayersViewModel_LayerRemoved;
MapWindowManager.MapLayersViewModel.CurrentLayer -= MapLayersViewModel_CurrentLayer;
}
dataGridLayers.SelectionChanged -= DataGridLayers_SelectionChanged;
dataGridLayers.DataContextChanged -= DataGridLayers_DataContextChanged;
dataGridLayers.PreviewDrop -= DataGridLayers_PreviewDrop;
dataGridLayers.PreviewMouseDown -= DataGridLayers_PreviewMouseDown;
dataGridLayers.LayoutUpdated -= DataGridLayers_LayoutUpdated;
ParentForm.Closing -= ParentForm_Closing;
MapLayersHandler.OnLayerVisibilityChanged -= MapLayersHandler_OnLayerVisibilityChanged;
_instance = null;
MapWindowManager.MapLayersWindow = null;
this.SavePlacement();
}
private void OnWindowClosed(object sender, EventArgs e)
{
_instance = null;
}