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/*
* Copyright (C) 2006 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 android.content;
import android.database.IContentObserver;
import android.net.Uri;
import android.os.Binder;
import android.os.RemoteException;
import android.os.IBinder;
import android.os.Parcel;
import android.os.ServiceManager;
import android.os.Bundle;
import android.util.Config;
import android.util.Log;
/**
* {@hide}
*/
abstract class ContentServiceNative extends Binder implements IContentService
{
public ContentServiceNative()
{
attachInterface(this, descriptor);
}
/**
* Cast a Binder object into a content resolver interface, generating
* a proxy if needed.
*/
static public IContentService asInterface(IBinder obj)
{
if (obj == null) {
return null;
}
IContentService in =
(IContentService)obj.queryLocalInterface(descriptor);
if (in != null) {
return in;
}
return new ContentServiceProxy(obj);
}
/**
* Retrieve the system's default/global content service.
*/
static public IContentService getDefault()
{
if (gDefault != null) {
return gDefault;
}
IBinder b = ServiceManager.getService("content");
if (Config.LOGV) Log.v("ContentService", "default service binder = " + b);
gDefault = asInterface(b);
if (Config.LOGV) Log.v("ContentService", "default service = " + gDefault);
return gDefault;
}
@Override
public boolean onTransact(int code, Parcel data, Parcel reply, int flags)
{
try {
switch (code) {
case 5038: {
data.readString(); // ignore the interface token that service generated
Uri uri = Uri.parse(data.readString());
notifyChange(uri, null, false, false);
return true;
}
case REGISTER_CONTENT_OBSERVER_TRANSACTION: {
Uri uri = Uri.CREATOR.createFromParcel(data);
boolean notifyForDescendents = data.readInt() != 0;
IContentObserver observer = IContentObserver.Stub.asInterface(data.readStrongBinder());
registerContentObserver(uri, notifyForDescendents, observer);
return true;
}
case UNREGISTER_CHANGE_OBSERVER_TRANSACTION: {
IContentObserver observer = IContentObserver.Stub.asInterface(data.readStrongBinder());
unregisterContentObserver(observer);
return true;
}
case NOTIFY_CHANGE_TRANSACTION: {
Uri uri = Uri.CREATOR.createFromParcel(data);
IContentObserver observer = IContentObserver.Stub.asInterface(data.readStrongBinder());
boolean observerWantsSelfNotifications = data.readInt() != 0;
boolean syncToNetwork = data.readInt() != 0;
notifyChange(uri, observer, observerWantsSelfNotifications, syncToNetwork);
return true;
}
case START_SYNC_TRANSACTION: {
Uri url = null;
int hasUrl = data.readInt();
if (hasUrl != 0) {
url = Uri.CREATOR.createFromParcel(data);
}
startSync(url, data.readBundle());
return true;
}
case CANCEL_SYNC_TRANSACTION: {
Uri url = null;
int hasUrl = data.readInt();
if (hasUrl != 0) {
url = Uri.CREATOR.createFromParcel(data);
}
cancelSync(url);
return true;
}
default:
return super.onTransact(code, data, reply, flags);
}
} catch (Exception e) {
Log.e("ContentServiceNative", "Caught exception in transact", e);
}
return false;
}
public IBinder asBinder()
{
return this;
}
private static IContentService gDefault;
}
final class ContentServiceProxy implements IContentService
{
public ContentServiceProxy(IBinder remote)
{
mRemote = remote;
}
public IBinder asBinder()
{
return mRemote;
}
public void registerContentObserver(Uri uri, boolean notifyForDescendents,
IContentObserver observer) throws RemoteException
{
Parcel data = Parcel.obtain();
uri.writeToParcel(data, 0);
data.writeInt(notifyForDescendents ? 1 : 0);
data.writeStrongInterface(observer);
mRemote.transact(REGISTER_CONTENT_OBSERVER_TRANSACTION, data, null, 0);
data.recycle();
}
public void unregisterContentObserver(IContentObserver observer) throws RemoteException {
Parcel data = Parcel.obtain();
data.writeStrongInterface(observer);
mRemote.transact(UNREGISTER_CHANGE_OBSERVER_TRANSACTION, data, null, 0);
data.recycle();
}
public void notifyChange(Uri uri, IContentObserver observer,
boolean observerWantsSelfNotifications, boolean syncToNetwork)
throws RemoteException {
Parcel data = Parcel.obtain();
uri.writeToParcel(data, 0);
data.writeStrongInterface(observer);
data.writeInt(observerWantsSelfNotifications ? 1 : 0);
data.writeInt(syncToNetwork ? 1 : 0);
mRemote.transact(NOTIFY_CHANGE_TRANSACTION, data, null, IBinder.FLAG_ONEWAY);
data.recycle();
}
public void startSync(Uri url, Bundle extras) throws RemoteException {
Parcel data = Parcel.obtain();
if (url == null) {
data.writeInt(0);
} else {
data.writeInt(1);
url.writeToParcel(data, 0);
}
extras.writeToParcel(data, 0);
mRemote.transact(START_SYNC_TRANSACTION, data, null, IBinder.FLAG_ONEWAY);
data.recycle();
}
public void cancelSync(Uri url) throws RemoteException {
Parcel data = Parcel.obtain();
if (url == null) {
data.writeInt(0);
} else {
data.writeInt(1);
url.writeToParcel(data, 0);
}
mRemote.transact(CANCEL_SYNC_TRANSACTION, data, null /* reply */, IBinder.FLAG_ONEWAY);
data.recycle();
}
private IBinder mRemote;
}
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