@Override
public <T extends EventListener> void addListener(T t) {
if (!isStarting()) throw new IllegalStateException();
if (!_enabled) throw new UnsupportedOperationException();
super.addListener(t);
ListenerHolder holder = getServletHandler().newListenerHolder(Source.JAVAX_API);
holder.setListener(t);
getServletHandler().addListener(holder);
}
@Override
public IGPIOPinInputListener addingService(ServiceReference<IGPIOPinInputListener> reference) {
// get service
IGPIOPinInputListener gPIOInputListener = context.getService(reference);
if (gPIOInputListener == null) return null;
// Get pinId
Integer pinId = IGPIOPin.Util.getPinId(reference);
if (pinId == null) pinId = new Integer(IGPIOPin.DEFAULT_INPUT_PIN);
Pin pin = Pi4jGPIOPin.getPinForId(pinId.intValue());
if (pin != null) {
// Get pinName
String pinName = IGPIOPin.Util.getPinName(reference);
if (pinName == null) pinName = String.valueOf(pinId);
// Get pullresistance
Integer pullResistance = IGPIOPin.Util.getInputPullResistance(reference);
// If it's not set, set to PUL
if (pullResistance == null)
pullResistance = new Integer(IGPIOPin.PIN_DEFAULTINPUTPULLRESISTANCE);
PinPullResistance pr = Pi4jGPIOPin.getPinPullResistance(pullResistance.intValue());
if (pr == null) pr = PinPullResistance.PULL_DOWN;
// Get controller GPIO
synchronized (refToListenerMap) {
// Find reference
ListenerHolder listenerHolder = refToListenerMap.get(reference);
GpioPinDigitalInput inputListener = null;
// We've not seen this request before
if (listenerHolder == null) {
inputListener = Activator.getGPIOController().provisionDigitalInputPin(pin, pinName, pr);
listenerHolder = new ListenerHolder(inputListener);
} else
// We've seen it before so we use the old inputListener
inputListener = listenerHolder.inputListener;
// create new Pi4jGPIOPinInputListener
Pi4jGPIOPinInputListener listener =
new Pi4jGPIOPinInputListener(inputListener, gPIOInputListener);
// set on the listener holder
listenerHolder.setListener(listener);
// put into map
refToListenerMap.put(reference, listenerHolder);
}
} else {
System.err.println(
"adding IGPIOPinInputListener service...pinId is not available for pinId=" + pinId);
}
return gPIOInputListener;
}
