package nfc.sample.Ndef.Write;
/*
* Copyright (c) 2012 Research In Motion Limited.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import net.rim.device.api.io.nfc.NFCException;
import net.rim.device.api.io.nfc.readerwriter.ReaderWriterManager;
import net.rim.device.api.io.nfc.readerwriter.Target;
import net.rim.device.api.system.RuntimeStore;
import nfc.sample.Ndef.Write.ui.TagCreatorScreen;
public class DetectionListenerManager {
private static DetectionListenerManager _mgr;
private RuntimeStore rts = RuntimeStore.getRuntimeStore();
private TagCreatorScreen _log_screen;
private DetectionListenerManager() {
}
public synchronized static DetectionListenerManager getInstance() {
if(_mgr == null) {
_mgr = new DetectionListenerManager();
}
return _mgr;
}
public boolean is_listening() {
Boolean state = (Boolean) rts.get(Constants.LISTENER_STATE_TOKEN);
if (state != null) {
Utilities.log("XXXX isListening:"+state);
return state.booleanValue();
} else {
Utilities.log("XXXX isListening: token not found. defaulting to false");
rts.replace(Constants.LISTENER_STATE_TOKEN, new Boolean(false));
return false;
}
}
public void registerListener(NfcWriteNdefSmartTagListener nfcWriteNdefSmartTagListener) {
ReaderWriterManager nfcManager;
Utilities.log("XXXX NfcWriteNdefSmartTag about to add Detection Listener");
try {
nfcManager = ReaderWriterManager.getInstance();
nfcManager.addDetectionListener(nfcWriteNdefSmartTagListener, new int[]{Target.NDEF_TAG});
Utilities.log("XXXX NfcWriteNdefSmartTag add Detection Listener success");
logEvent("Detection Listener added");
rts.replace(Constants.LISTENER_STATE_TOKEN, new Boolean(true));
} catch (NFCException e) {
e.printStackTrace();
Utilities.log("XXXX NfcWriteNdefSmartTag NFCException on register");
logEvent("Detection Listener add failed");
}
}
public void unRegisterListener(NfcWriteNdefSmartTagListener nfcWriteNdefSmartTagListener) {
ReaderWriterManager nfcManager;
Utilities.log("XXXX NfcWriteNdefSmartTag about to remove Detection Listener");
try {
nfcManager = ReaderWriterManager.getInstance();
/*
* This is the converse of the call to register our interest in
* tags of a certain type.
*/
nfcManager.removeDetectionListener(nfcWriteNdefSmartTagListener);
Utilities.log("XXXX NfcWriteNdefSmartTag remove Detcetion Listener success");
logEvent("Detection Listener removed");
rts.replace(Constants.LISTENER_STATE_TOKEN, new Boolean(false));
} catch (NFCException e) {
e.printStackTrace();
Utilities.log("XXXX NfcWriteNdefSmartTag NFCException on unregister");
logEvent("Detection Listener remove failed");
}
}
public void set_log_screen(TagCreatorScreen _log_screen) {
this._log_screen = _log_screen;
}
private void logEvent(String msg) {
if (_log_screen != null) {
_log_screen.logEvent(msg);
}
}
}