/// <summary>
/// Note: This method validates that the target listener object is still around, if the
/// listener object is null, it removes any delegates bound to that object. This is the
/// only part of the code that is Unity specific. If you'd like to us SimpleSignals in
/// a vanilla C# enviornment, this is the only method that needs to be tweaked.
/// </summary>
protected bool ValidateSignalListener(SignalManager signalManager, SignalListenerItem listener)
{
bool isInvokable = true;
object target = listener.SignalDelegate.Target;
// <UnitySpecific>
// Comment this code out if you're not using MonoBehaviors
if (target is MonoBehaviour)
{
MonoBehaviour targetGO = (MonoBehaviour)target;
// Don't invoke listeners on destroyed GameObjects instead Clean up listeners
if (targetGO == null && !ReferenceEquals(targetGO, null))
{
isInvokable = false;
SignalManager.UnbindSignals(signalManager, targetGO);
}
}
// </UnitySpecific>
// This listener delegate will be removed after it's invoked
if (listener.ListenerType == ListenerType.Once)
{
this.listenersToRemove.Add(listener);
}
return(isInvokable);
}
public void RemoveListener(Delegate listener)
{
SignalListenerItem itemToRemove = new SignalListenerItem();
foreach (var listenerItem in listeners)
{
if (listenerItem.SignalDelegate == listener)
{
itemToRemove = listenerItem;
break;
}
}
if (itemToRemove.SignalDelegate != null)
{
this.listeners.Remove(itemToRemove);
}
}