+ @Override
+ public void subscribeReceive() {
+ if (dbusMessageHandler == null) {
+ dbusMessageHandler = new DbusReceiveMessageHandler(m, connection, objectPath);
+ m.addReceiveHandler(dbusMessageHandler);
+ }
+ subscriberCount++;
+ }
+
+ @Override
+ public void unsubscribeReceive() {
+ subscriberCount = Math.max(0, subscriberCount - 1);
+ if (subscriberCount == 0 && dbusMessageHandler != null) {
+ m.removeReceiveHandler(dbusMessageHandler);
+ dbusMessageHandler = null;
+ }
+ }
+