public function handleSignal(Elevator $elevator, $signal)
{
if ($signal === Elevator::STATE_DOOR_OPEN) {
if ($elevator->isDoorOpen() || $elevator->isStanding()) {
$state = Elevator::STATE_DOOR_OPEN;
} else {
throw new Exception("Elevator is on it's way. Can not open door right now, sorry!");
}
} else {
$state = $this->delegate($elevator, $signal);
}
return $state;
}
public function handleSignal(Elevator $elevator, $signal)
{
if ($signal === Elevator::STATE_DOOR_CLOSE) {
if ($elevator->isDoorOpen()) {
$state = Elevator::STATE_STANDING;
} else {
$state = NULL;
}
} else {
$state = $this->delegate($elevator, $signal);
}
return $state;
}
public function handleSignal(Elevator $elevator, $signal)
{
if ($signal === Elevator::STATE_ALARM) {
if ($elevator->isDoorOpen()) {
throw new Exception("Elevator has door open, why should you push an alarm button?");
} else {
$state = Elevator::STATE_ALARM;
}
} else {
$state = $this->delegate($elevator, $signal);
}
return $state;
}
