public void AddDelegate (Delegate d)
{
if (args_type == null)
args_type = d.Method.GetParameters ()[1].ParameterType;
if (d.Method.IsDefined (typeof (ConnectBeforeAttribute), false)) {
tref.Target.BeforeSignals [name] = Delegate.Combine (tref.Target.BeforeSignals [name] as Delegate, d);
if (before_closure == null) {
if (marshaler == null)
before_closure = new SignalClosure (tref.Handle, name, args_type);
else
before_closure = new SignalClosure (tref.Handle, name, marshaler, this);
before_closure.Disposed += ClosureDisposedHandler;
before_closure.Invoked += ClosureInvokedHandler;
before_closure.Connect (false);
}
} else {
tref.Target.AfterSignals [name] = Delegate.Combine (tref.Target.AfterSignals [name] as Delegate, d);
if (after_closure == null) {
if (marshaler == null)
after_closure = new SignalClosure (tref.Handle, name, args_type);
else
after_closure = new SignalClosure (tref.Handle, name, marshaler, this);
after_closure.Disposed += ClosureDisposedHandler;
after_closure.Invoked += ClosureInvokedHandler;
after_closure.Connect (true);
}
}
}
public void RemoveDelegate (Delegate d)
{
if (tref.Target == null)
return;
if (d.Method.IsDefined (typeof (ConnectBeforeAttribute), false)) {
tref.Target.BeforeSignals [name] = Delegate.Remove (tref.Target.BeforeSignals [name] as Delegate, d);
if (tref.Target.BeforeSignals [name] == null && before_closure != null) {
before_closure.Dispose ();
before_closure = null;
}
} else {
tref.Target.AfterSignals [name] = Delegate.Remove (tref.Target.AfterSignals [name] as Delegate, d);
if (tref.Target.AfterSignals [name] == null && after_closure != null) {
after_closure.Dispose ();
after_closure = null;
}
}
}
void ClosureDisposedCB (object o, EventArgs args)
{
if (o == before_closure) {
before_closure.Disposed -= new EventHandler (ClosureDisposedHandler);
before_closure.Invoked -= new ClosureInvokedHandler (ClosureInvokedCB);
if (tref.Target != null)
tref.Target.BeforeSignals.Remove (name);
before_closure = null;
} else if (o == after_closure) {
after_closure.Disposed -= new EventHandler (ClosureDisposedHandler);
after_closure.Invoked -= new ClosureInvokedHandler (ClosureInvokedCB);
if (tref.Target != null)
tref.Target.AfterSignals.Remove (name);
after_closure = null;
}
if (before_closure == null && after_closure == null)
tref.Signals.Remove (name);
}