public static Action DoOrReserve(
this IEventContainer eventContainer,
Action action,
Func <bool> predicate)
{
eventContainer.Subscribe(OnReservedEventTriggered);
if (predicate())
{
UnsubscribeAndAction();
}
return(() => eventContainer.Unsubscribe(OnReservedEventTriggered));
#region Local Methods
void OnReservedEventTriggered(object sender, EventArgs arg)
{
if (predicate())
{
UnsubscribeAndAction();
}
}
void UnsubscribeAndAction()
{
eventContainer.Unsubscribe(OnReservedEventTriggered);
action();
}
#endregion
}
private static Action NewMethod <TEventArg>(IEventContainer <TEventArg> eventContainer, Action action, Func <bool> predicate)
{
eventContainer.Subscribe(OnReservedEventTriggered);
if (predicate())
{
UnsubscribeAndAction();
}
return(() => eventContainer.Unsubscribe(OnReservedEventTriggered));
#region Local Methods
void OnReservedEventTriggered(object sender, TEventArg arg)
{
if (predicate())
{
UnsubscribeAndAction();
}
}
void UnsubscribeAndAction()
{
eventContainer.Unsubscribe(OnReservedEventTriggered);
action();
}
#endregion
}
public static Action DoAtOnce <TEventArg>(
this IEventContainer <TEventArg> eventContainer,
Action <object, TEventArg> action,
Func <object, TEventArg, bool> predicate = null)
{
predicate = predicate ?? Predicates.True;
eventContainer.Subscribe(OnTriggered);
return(() => { eventContainer.Unsubscribe(OnTriggered); });
void OnTriggered(object sender, TEventArg arg)
{
if (predicate(sender, arg))
{
eventContainer.Unsubscribe(OnTriggered);
action(sender, arg);
}
}
}
