Create EventWrapper

src/SharpIDE.Application/Features/Events/EventWrapperBase.cs

@@ -0,0 +1,44 @@
+namespace SharpIDE.Application.Features.Events;
+
+public abstract class EventWrapperBase<TDelegate>(TDelegate @event) where TDelegate : Delegate
+{
+	protected TDelegate Event = @event;
+
+	public void Subscribe(TDelegate handler) => Event = (TDelegate)Delegate.Combine(Event, handler);
+	public void Unsubscribe(TDelegate handler) => Event = (TDelegate)Delegate.Remove(Event, handler)!;
+
+	protected static async void FireAndForget(Func<Task> action)
+	{
+		try
+		{
+			await action().ConfigureAwait(false);
+		}
+		catch (Exception ex)
+		{
+			Console.WriteLine($"An exception occurred in an event handler: {ex}");
+		}
+	}
+
+	protected static async Task InvokeDelegatesAsync(IEnumerable<Delegate> invocationList, Func<Delegate, Task> delegateExecutorDelegate)
+	{
+		var tasks = invocationList.Select(async del =>
+		{
+			try
+			{
+				await delegateExecutorDelegate(del).ConfigureAwait(false);
+				return null;
+			}
+			catch (Exception ex)
+			{
+				return ex;
+			}
+		});
+
+		var results = await Task.WhenAll(tasks).ConfigureAwait(false);
+		var exceptions = results.Where(r => r is not null).Select(r => r!).ToList();
+		if (exceptions.Count != 0)
+		{
+			throw new AggregateException(exceptions);
+		}
+	}
+}