ReferenceHandle RegisterImpl(object recipient, string eventName, Action action, bool weakreference = false)
{
if (recipient == null)
{
throw new ArgumentNullException("recipient");
}
if (GetHolders <IHolder>(recipient, eventName).Any(x => x.IsSame(recipient, action)))
{
//イベント登録済み
return(ReferenceHandle.Empty);
}
if (!weakreference)
{
var holder = new Holder
{
EventName = eventName,
Recipient = new WeakReference <object>(recipient),
Action = action
};
m_Events.Add(holder);
return(ReferenceHandle.Empty);
}
else
{
var holder = new WeakReferenceHolder
{
EventName = eventName,
Recipient = new WeakReference <object>(recipient),
Action = new WeakReference <Action>(action)
};
var handle = new ReferenceHandle(action, holder);
holder.Handle = new WeakReference <ReferenceHandle>(handle);
m_Events.Add(holder);
return(handle);
}
}
public override bool IsActive()
{
return(base.IsActive() && Action.TryGetTarget(out _) && ReferenceHandle.IsActive(Handle));
}
