private boolean changeState(State newState, Runnable callback) {
if (isTransitionLegal(currentState, newState)) {
if (Debug.isDebugConnection()) {
Log.d(LOG_TAG, "Changing state: " + currentState + " -> " + newState);
}
currentState = newState;
if (callback != null) {
callback.run();
}
sendNotification();
return true;
}
if (Debug.isDebugConnection()) {
Log.d(LOG_TAG, "Illegal transition: " + currentState + " -> " + newState);
}
return false;
}
private void sendNotification() {
if (connectionListener == null) {
pendingNotification = true;
if (Debug.isDebugConnection()) {
Log.d(LOG_TAG, "Pending notification: " + currentState);
}
return;
}
pendingNotification = false;
if (Debug.isDebugConnection()) {
Log.d(LOG_TAG, "Sending notification: " + currentState + " to " + connectionListener);
}
switch (currentState) {
case IDLE:
break;
case CONNECTING:
connectionListener.onConnecting();
break;
case CONNECTED:
connectionListener.onConnectionSuccessful(
Debug.isDebugConnectionLess() ? new DummySender() : anymoteSender);
break;
case DISCONNECTING:
connectionListener.onDisconnected();
break;
case DEVICE_FINDER:
connectionListener.onShowDeviceFinder();
break;
case PAIRING:
if (target != null) {
connectionListener.onNeedsPairing(target);
} else {
connectionListener.onShowDeviceFinder();
}
break;
default:
throw new IllegalStateException("Unsupported state: " + currentState);
}
}
private void handleSetKeepConnected(boolean keepConnected) {
keepConnectedRefcount += keepConnected ? 1 : -1;
if (Debug.isDebugConnection()) {
Log.d(LOG_TAG, "KeepConnectedRefcount: " + keepConnectedRefcount);
}
if (keepConnectedRefcount < 0) {
throw new IllegalStateException("KeepConnectedRefCount < 0");
}
if (connectionListener == null) {
disconnect(false);
}
}
private void connect() {
if (Debug.isDebugConnection()) {
Log.d(LOG_TAG, "Connecting to: " + target);
}
if (sendSocket != null) {
throw new IllegalStateException("Already connected");
}
if (target == null) {
changeState(State.DEVICE_FINDER);
return;
}
startConnectionTask(target);
}
private boolean isConnected() {
return Debug.isDebugConnectionLess() || sendSocket != null;
}