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/*
* Copyright (C) 2014 The Android Open Source Project
*
* 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
*/
package com.android.server.location;
import android.location.GpsMeasurementsEvent;
import android.location.IGpsMeasurementsListener;
import android.os.Handler;
import android.os.RemoteException;
import android.util.Log;
/**
* An base implementation for GPS measurements provider.
* It abstracts out the responsibility of handling listeners, while still allowing technology
* specific implementations to be built.
*
* @hide
*/
public abstract class GpsMeasurementsProvider
extends RemoteListenerHelper<IGpsMeasurementsListener> {
private static final String TAG = "GpsMeasurementsProvider";
public GpsMeasurementsProvider(Handler handler) {
super(handler, TAG);
}
public void onMeasurementsAvailable(final GpsMeasurementsEvent event) {
ListenerOperation<IGpsMeasurementsListener> operation =
new ListenerOperation<IGpsMeasurementsListener>() {
@Override
public void execute(IGpsMeasurementsListener listener) throws RemoteException {
listener.onGpsMeasurementsReceived(event);
}
};
foreach(operation);
}
public void onCapabilitiesUpdated(boolean isGpsMeasurementsSupported) {
int status = isGpsMeasurementsSupported ?
GpsMeasurementsEvent.STATUS_READY :
GpsMeasurementsEvent.STATUS_NOT_SUPPORTED;
setSupported(isGpsMeasurementsSupported, new StatusChangedOperation(status));
}
@Override
protected ListenerOperation<IGpsMeasurementsListener> getHandlerOperation(int result) {
final int status;
switch (result) {
case RESULT_SUCCESS:
status = GpsMeasurementsEvent.STATUS_READY;
break;
case RESULT_NOT_AVAILABLE:
case RESULT_NOT_SUPPORTED:
case RESULT_INTERNAL_ERROR:
status = GpsMeasurementsEvent.STATUS_NOT_SUPPORTED;
break;
case RESULT_GPS_LOCATION_DISABLED:
status = GpsMeasurementsEvent.STATUS_GPS_LOCATION_DISABLED;
break;
default:
Log.v(TAG, "Unhandled addListener result: " + result);
return null;
}
return new StatusChangedOperation(status);
}
@Override
protected void handleGpsEnabledChanged(boolean enabled) {
int status = enabled ?
GpsMeasurementsEvent.STATUS_READY :
GpsMeasurementsEvent.STATUS_GPS_LOCATION_DISABLED;
foreach(new StatusChangedOperation(status));
}
private class StatusChangedOperation implements ListenerOperation<IGpsMeasurementsListener> {
private final int mStatus;
public StatusChangedOperation(int status) {
mStatus = status;
}
@Override
public void execute(IGpsMeasurementsListener listener) throws RemoteException {
listener.onStatusChanged(mStatus);
}
}
}
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