TheXamlGuy
27 lines
775 B
C#
27 lines
775 B
C#
namespace Toolkit.Foundation;
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public class HandlerProvider(SubscriptionCollection subscriptions) :
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IHandlerProvider
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{
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public IEnumerable<object?> Get(Type type,
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object? key = null)
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{
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string subscriptionKey = $"{(key is not null ? $"{key}:" : "")}{type}";
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if (subscriptions.TryGetValue(subscriptionKey, out List<WeakReference>? subscribers))
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{
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foreach (WeakReference weakRef in subscribers.ToArray())
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{
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object? target = weakRef.Target;
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if (target != null)
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{
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yield return target;
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}
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else
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{
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subscribers.Remove(weakRef);
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}
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}
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}
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}
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}
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