public void DeleteElement(Entity entity)
{
if (entity == null)
{
return;
}
if (entity is ShapeBase)
{
DeletingEventArgs deletingEventArgs = new DeletingEventArgs();
OnDeleting(entity, deletingEventArgs);
if (!deletingEventArgs.Cancel)
{
this.shapes.Remove(entity as ShapeBase);
this.Invalidate(true);
OnDeleted(entity, EventArgs.Empty);
}
}
else if (entity is Connection)
{
DeletingEventArgs deletingEventArgs = new DeletingEventArgs();
OnDeleting(entity, deletingEventArgs);
if (!deletingEventArgs.Cancel)
{
this.connections.Remove(entity as Connection);
this.Invalidate(true);
OnDeleted(entity, EventArgs.Empty);
}
}
}
private void OnDeleting(object sender, DeletingEventArgs e)
{
OnElementDeleting?.Invoke(sender, e);
}