/// <summary>
/// Unsubscribes from an event.
/// </summary>
/// <typeparam name="T">The type of the event arguments.</typeparam>
/// <param name="target">The event source.</param>
/// <param name="eventName">The name of the event.</param>
/// <param name="subscriber">The subscriber.</param>
public static void Unsubscribe <T>(object target, string eventName, IWeakSubscriber <T> subscriber)
where T : EventArgs
{
if (SubscriptionTypeStorage <T> .Subscribers.TryGetValue(target, out var dic))
{
if (dic.TryGetValue(eventName, out var sub))
{
sub.Remove(subscriber);
}
}
}
public static void Subscribe <T>(object target, string eventName, IWeakSubscriber <T> subscriber)
{
var dic = SubscriptionTypeStorage <T> .Subscribers.GetOrCreateValue(target);
Subscription <T> sub;
if (!dic.TryGetValue(eventName, out sub))
{
dic[eventName] = sub = new Subscription <T>(dic, target, eventName);
}
sub.Add(new WeakReference <IWeakSubscriber <T> >(subscriber));
}
public void Remove(IWeakSubscriber <T> s)
{
var removed = false;
for (int c = 0; c < _count; ++c)
{
var reference = _data[c];
IWeakSubscriber <T> instance;
if (reference != null && reference.TryGetTarget(out instance) && instance == s)
{
_data[c] = null;
removed = true;
}
}
if (removed)
{
Compact();
}
}
public static void SubscribeWeak(IWeakSubscriber <EventArgs> subscriber) => WeakSubscriptionManager.Subscribe(InternalEventManager, nameof(EventManager.SelectedThemeChanged), subscriber);
/// <summary>
/// Subscribes to an event on an object using a weak subscription.
/// </summary>
/// <typeparam name="TTarget">The type of the target.</typeparam>
/// <typeparam name="TEventArgs">The type of the event arguments.</typeparam>
/// <param name="target">The event source.</param>
/// <param name="eventName">The name of the event.</param>
/// <param name="subscriber">The subscriber.</param>
public static void Subscribe <TTarget, TEventArgs>(TTarget target, string eventName, IWeakSubscriber <TEventArgs> subscriber)
where TEventArgs : EventArgs
{
var dic = SubscriptionTypeStorage <TEventArgs> .Subscribers.GetOrCreateValue(target);
Subscription <TEventArgs> sub;
if (!dic.TryGetValue(eventName, out sub))
{
dic[eventName] = sub = new Subscription <TEventArgs>(dic, typeof(TTarget), target, eventName);
}
sub.Add(new WeakReference <IWeakSubscriber <TEventArgs> >(subscriber));
}
