/// @brief Performs upkeep on the chosen widget if available, choosing a replacement if
/// called for; also, updates input state
void State::ResolveSignal (void)
{
// Indicate that the system is issuing events
mMode = eIssuingEvents;
// There may have been a press while no widget was entered. If there is still a
// press, there is then no meaningful way to interact with the interface.
if (!mStatus.test(eWasPressed) || mChoice != 0)
{
// If there is a choice, perform upkeep on it.
if (mChoice != 0) mChoice->Upkeep(mStatus.test(eIsPressed));
// If there is a valid signal but no choice, choose it.
if (mSignaled != 0 && 0 == mChoice)
{
mChoice = mSignaled->GetOwner();
mChoice->Choose(mStatus.test(eIsPressed));
}
}
// Prepare for the next propagation.
mStatus.set(eWasPressed, mStatus.test(eIsPressed));
mMode = eNormal;
Unsignal();
}
void Mutex::ThreadWoken()
{
Unsignal();
}
void Semaphore::ThreadWoken()
{
if (--fCount == 0)
Unsignal();
}
