protected override void CommandUpdate(object target, CommandInfo cinfo)
{
NodeCommandHandler nc = (NodeCommandHandler)target;
base.CommandUpdate(target, cinfo);
if (nc.MultipleSelectedNodes)
{
bool allowMulti = false;
ICommandUpdateHandler h = ((ICommandUpdateHandler)this).Next;
while (h != null)
{
if (h is AllowMultiSelectionAttribute)
{
allowMulti = true;
break;
}
h = h.Next;
}
if (!allowMulti)
{
cinfo.Enabled = false;
}
}
}
protected override void Run(object target, Command cmd)
{
NodeCommandHandler nch = (NodeCommandHandler)target;
if (nch.tree == null)
{
base.Run(target, cmd);
return;
}
try {
nch.tree.LockUpdates();
base.Run(target, cmd);
} finally {
nch.tree.UnlockUpdates();
}
}
