public IAsyncEventHandler CreateHandler(Func <TArg, Task> handler,
[CallerFilePath] string callerFile = null, [CallerLineNumber] int line = 0)
{
if (handler == null)
{
throw new ArgumentNullException(nameof(handler));
}
lock (Handlers)
{
RemoveHandler(handler);
var result = new AsyncEventTaskHandler <TArg>
{
Action = handler,
Event = this,
Caller = Debugger.IsAttached ? $"{callerFile}:{line}" : string.Empty
};
Handlers.Add(result);
return(result);
}
}
/// <summary>
/// Creates an event handler which you can dispose of explicitly if required.
/// </summary>
public static IAsyncEventHandler CreateHandler <TEvent>(this TEvent @event, Func <Task> handler,
[CallerFilePath] string callerFile = null, [CallerLineNumber] int line = 0)
where TEvent : AbstractAsyncEvent
{
if (handler == null)
{
throw new ArgumentNullException(nameof(handler));
}
lock (@event.Handlers)
{
@event.RemoveHandler(handler);
var result = new AsyncEventTaskHandler
{
Action = handler,
Event = @event,
Caller = Debugger.IsAttached ? $"{callerFile}:{line}" : string.Empty
};
@event.Handlers.Add(result);
return(result);
}
}