public static MapLegendForm GetInstance(MapLayersHandler mapLayersHandler)
{
if (_instance == null)
{
_instance = new MapLegendForm(mapLayersHandler);
}
return(_instance);
}
private void OnFormClosed(object sender, FormClosedEventArgs e)
{
_instance = null;
MapLayersHandler.LayerRemoved -= OnMapLayerRemoved;
MapLayersHandler.MapRedrawNeeded -= OnMapRedrawNeeded;
MapLayersHandler.LayerClassificationFinished -= OnLayerClassificationFinished;
MapLayersHandler.OnLayerVisibilityChanged -= OnLayerVisibilityChanged;
MapLayersHandler.LayerRefreshNeeded -= OnLayerRefreshNeeded;
MapLayersHandler.LayerRead -= OnMapLayerRead;
global.SaveFormSettings(this);
}
