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/*
* Copyright (C) 2010 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.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.location.Address;
import android.location.GeocoderParams;
import android.location.IGeocodeProvider;
import android.os.IBinder;
import android.os.RemoteException;
import android.os.SystemClock;
import android.util.Log;
import java.util.List;
/**
* A class for proxying IGeocodeProvider implementations.
*
* {@hide}
*/
public class GeocoderProxy {
private static final String TAG = "GeocoderProxy";
private final Context mContext;
private final Intent mIntent;
private final Object mMutex = new Object(); // synchronizes access to mServiceConnection
private Connection mServiceConnection = new Connection(); // never null
public GeocoderProxy(Context context, String serviceName) {
mContext = context;
mIntent = new Intent(serviceName);
mContext.bindService(mIntent, mServiceConnection, Context.BIND_AUTO_CREATE);
}
/**
* When unbundled NetworkLocationService package is updated, we
* need to unbind from the old version and re-bind to the new one.
*/
public void reconnect() {
synchronized (mMutex) {
mContext.unbindService(mServiceConnection);
mServiceConnection = new Connection();
mContext.bindService(mIntent, mServiceConnection, Context.BIND_AUTO_CREATE);
}
}
private class Connection implements ServiceConnection {
private IGeocodeProvider mProvider;
public void onServiceConnected(ComponentName className, IBinder service) {
Log.d(TAG, "onServiceConnected " + className);
synchronized (this) {
mProvider = IGeocodeProvider.Stub.asInterface(service);
}
}
public void onServiceDisconnected(ComponentName className) {
Log.d(TAG, "onServiceDisconnected " + className);
synchronized (this) {
mProvider = null;
}
}
public IGeocodeProvider getProvider() {
synchronized (this) {
return mProvider;
}
}
}
public String getFromLocation(double latitude, double longitude, int maxResults,
GeocoderParams params, List<Address> addrs) {
IGeocodeProvider provider;
synchronized (mMutex) {
provider = mServiceConnection.getProvider();
}
if (provider != null) {
try {
return provider.getFromLocation(latitude, longitude, maxResults,
params, addrs);
} catch (RemoteException e) {
Log.e(TAG, "getFromLocation failed", e);
}
}
return "Service not Available";
}
public String getFromLocationName(String locationName,
double lowerLeftLatitude, double lowerLeftLongitude,
double upperRightLatitude, double upperRightLongitude, int maxResults,
GeocoderParams params, List<Address> addrs) {
IGeocodeProvider provider;
synchronized (mMutex) {
provider = mServiceConnection.getProvider();
}
if (provider != null) {
try {
return provider.getFromLocationName(locationName, lowerLeftLatitude,
lowerLeftLongitude, upperRightLatitude, upperRightLongitude,
maxResults, params, addrs);
} catch (RemoteException e) {
Log.e(TAG, "getFromLocationName failed", e);
}
}
return "Service not Available";
}
}
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