internal static void FireOnNodeCopying(CancellableNodeOperationEventHandler Copying, Node sender, CancellableNodeOperationEventArgs e, List <Type> disabledObservers)
{
InvokeCancelOperationEventHandlers(Copying, sender, e);
var observers = NodeTypeManager.Current.NodeObservers;
if (observers == null)
{
return;
}
if (disabledObservers == null)
{
foreach (NodeObserver observer in observers)
{
observer.OnNodeCopying(sender, e);
}
}
else
{
foreach (NodeObserver observer in observers)
{
if (!disabledObservers.Contains(observer.GetType()))
{
observer.OnNodeCopying(sender, e);
}
}
}
}
internal static void InvokeCancelOperationEventHandlers(CancellableNodeOperationEventHandler handler, object sender, CancellableNodeOperationEventArgs e)
{
if (handler == null)
{
return;
}
Exception firstException = null;
Delegate[] list = (Delegate[])handler.GetInvocationList().Clone();
bool cancel = false;
foreach (CancellableNodeOperationEventHandler del in list)
{
try
{
del(sender, e);
cancel = cancel | e.Cancel;
e.Cancel = cancel;
}
catch (Exception ex) //TODO: catch block
{
//LogException(source, ex);
if (firstException == null)
{
firstException = ex;
}
}
}
if (firstException != null)
{
throw firstException;
}
}
internal static void FireOnNodeCopying(CancellableNodeOperationEventHandler Copying, Node sender, CancellableNodeOperationEventArgs e, List <Type> disabledObservers)
{
InvokeCancelOperationEventHandlers(Copying, sender, e);
FireNodeEvent(disabledObservers, observer => { observer.OnNodeCopying(sender, e); });
}
