| /* |
| * 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.GpsNavigationMessageEvent; |
| import android.location.IGpsNavigationMessageListener; |
| import android.os.Handler; |
| import android.os.RemoteException; |
| import android.util.Log; |
| |
| /** |
| * An base implementation for GPS navigation messages provider. |
| * It abstracts out the responsibility of handling listeners, while still allowing technology |
| * specific implementations to be built. |
| * |
| * @hide |
| */ |
| public abstract class GpsNavigationMessageProvider |
| extends RemoteListenerHelper<IGpsNavigationMessageListener> { |
| private static final String TAG = "GpsNavigationMessageProvider"; |
| |
| public GpsNavigationMessageProvider(Handler handler) { |
| super(handler, TAG); |
| } |
| |
| public void onNavigationMessageAvailable(final GpsNavigationMessageEvent event) { |
| ListenerOperation<IGpsNavigationMessageListener> operation = |
| new ListenerOperation<IGpsNavigationMessageListener>() { |
| @Override |
| public void execute(IGpsNavigationMessageListener listener) |
| throws RemoteException { |
| listener.onGpsNavigationMessageReceived(event); |
| } |
| }; |
| foreach(operation); |
| } |
| |
| public void onCapabilitiesUpdated(boolean isGpsNavigationMessageSupported) { |
| int status = isGpsNavigationMessageSupported ? |
| GpsNavigationMessageEvent.STATUS_READY : |
| GpsNavigationMessageEvent.STATUS_NOT_SUPPORTED; |
| setSupported(isGpsNavigationMessageSupported, new StatusChangedOperation(status)); |
| } |
| |
| @Override |
| protected ListenerOperation<IGpsNavigationMessageListener> getHandlerOperation(int result) { |
| final int status; |
| switch (result) { |
| case RESULT_SUCCESS: |
| status = GpsNavigationMessageEvent.STATUS_READY; |
| break; |
| case RESULT_NOT_AVAILABLE: |
| case RESULT_NOT_SUPPORTED: |
| case RESULT_INTERNAL_ERROR: |
| status = GpsNavigationMessageEvent.STATUS_NOT_SUPPORTED; |
| break; |
| case RESULT_GPS_LOCATION_DISABLED: |
| status = GpsNavigationMessageEvent.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 ? |
| GpsNavigationMessageEvent.STATUS_READY : |
| GpsNavigationMessageEvent.STATUS_GPS_LOCATION_DISABLED; |
| foreach(new StatusChangedOperation(status)); |
| } |
| |
| private class StatusChangedOperation |
| implements ListenerOperation<IGpsNavigationMessageListener> { |
| private final int mStatus; |
| |
| public StatusChangedOperation(int status) { |
| mStatus = status; |
| } |
| |
| @Override |
| public void execute(IGpsNavigationMessageListener listener) throws RemoteException { |
| listener.onStatusChanged(mStatus); |
| } |
| } |
| } |