private void OnLayerRemoved(Layer layer)
{
if (LayerRemoved != null) LayerRemoved(this, new LayerEventArgs(layer));
try
{
layer.UpdateOrderChanged -= layer_UpdateOrderChanged;
}
catch (Exception) { }
}
private void OnLayerAdded(Layer layer)
{
if (LayerAdded != null) LayerAdded(this, new LayerEventArgs(layer));
// hook up events
layer.UpdateOrderChanged += layer_UpdateOrderChanged;
// refresh the update order
SortUpdateOrder();
}
public void AddLayer(Layer layer)
{
if (!Layers.Contains(layer))
{
Layers.Add(layer);
OnLayerAdded(layer);
}
}
public void RemoveLayer(Layer layer)
{
if (Layers.Contains(layer))
{
Layers.Remove(layer);
OnLayerRemoved(layer);
}
}
protected virtual void OnLayerChanged(Layer layer)
{
if (LayerChanged != null)
LayerChanged(this, new LayerEventArgs(layer));
if (layer != null)
foreach (WorldObject wo in _components)
wo.Layer = layer;
}