/// <summary>
/// Register the INavigableObserver as a WeakReference.
/// </summary>
/// <param name="observer">The INavigableObserver.</param>
/// <returns>The INavigableObserver as a WeakReference.</returns>
public WeakReference <INavigableObserver> RegisterObserver(INavigableObserver observer)
{
var weakObserver = new WeakReference <INavigableObserver>(observer);
observers.Add(weakObserver);
return(weakObserver);
}
/// <summary>
/// Unregister the INavigableObserver.
/// </summary>
/// <param name="observer">The INavigableObserver.</param>
public void UnregisterObserver(INavigableObserver observer)
{
var obs = observers.Where(x =>
{
x.TryGetTarget(out INavigableObserver target);
return(target.Equals(observer));
})
.SingleOrDefault();
if (obs != null)
{
observers.Remove(obs);
}
}
