| /* |
| * Copyright (C) 2016 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.service.autofill; |
| |
| import android.annotation.SdkConstant; |
| import android.app.Service; |
| import android.app.assist.AssistStructure; |
| import android.content.Intent; |
| import android.os.Bundle; |
| import android.os.IBinder; |
| import android.os.Looper; |
| import android.os.Message; |
| import android.util.Log; |
| |
| import com.android.internal.os.HandlerCaller; |
| import com.android.internal.os.SomeArgs; |
| |
| /** |
| * Top-level service of the current auto-fill service for a given user. |
| */ |
| // TODO: expand documentation |
| public abstract class AutoFillService extends Service { |
| |
| private static final String TAG = "AutoFillService"; |
| private static final boolean DEBUG = true; // TODO: set to false once stable |
| |
| /** |
| * The {@link Intent} that must be declared as handled by the service. |
| * To be supported, the service must also require the |
| * {@link android.Manifest.permission#BIND_AUTO_FILL} permission so |
| * that other applications can not abuse it. |
| */ |
| @SdkConstant(SdkConstant.SdkConstantType.SERVICE_ACTION) |
| public static final String SERVICE_INTERFACE = "android.service.autofill.AutoFillService"; |
| |
| private static final int MSG_READY = 1; |
| private static final int MSG_NEW_SESSION = 2; |
| private static final int MSG_SESSION_FINISHED = 3; |
| private static final int MSG_SHUTDOWN = 4; |
| |
| // TODO: add metadata? |
| |
| private final IAutoFillService mInterface = new IAutoFillService.Stub() { |
| @Override |
| public void ready() { |
| mHandlerCaller.sendMessage(mHandlerCaller.obtainMessage(MSG_READY)); |
| } |
| |
| @Override |
| public void newSession(String token, Bundle data, int flags, |
| AssistStructure structure) { |
| mHandlerCaller.sendMessage(mHandlerCaller.obtainMessageIOOO(MSG_NEW_SESSION, |
| flags, token, data, structure)); |
| } |
| |
| @Override |
| public void finishSession(String token) { |
| mHandlerCaller.sendMessage(mHandlerCaller.obtainMessageO(MSG_SESSION_FINISHED, token)); |
| } |
| |
| @Override |
| public void shutdown() { |
| mHandlerCaller.sendMessage(mHandlerCaller.obtainMessage(MSG_SHUTDOWN)); |
| } |
| }; |
| |
| private final HandlerCaller.Callback mHandlerCallback = new HandlerCaller.Callback() { |
| |
| @Override |
| public void executeMessage(Message msg) { |
| switch (msg.what) { |
| case MSG_READY: { |
| onReady(); |
| break; |
| } case MSG_NEW_SESSION: { |
| final SomeArgs args = (SomeArgs) msg.obj; |
| final int flags = args.argi1; |
| final String token = (String) args.arg1; |
| final Bundle data = (Bundle) args.arg2; |
| final AssistStructure assistStructure = (AssistStructure) args.arg3; |
| onNewSession(token, data, flags, assistStructure); |
| break; |
| } case MSG_SESSION_FINISHED: { |
| final String token = (String) msg.obj; |
| onSessionFinished(token); |
| break; |
| } case MSG_SHUTDOWN: { |
| onShutdown(); |
| break; |
| } default: { |
| Log.w(TAG, "MyCallbacks received invalid message type: " + msg); |
| } |
| } |
| } |
| }; |
| |
| private HandlerCaller mHandlerCaller; |
| |
| @Override |
| public void onCreate() { |
| super.onCreate(); |
| |
| mHandlerCaller = new HandlerCaller(null, Looper.getMainLooper(), mHandlerCallback, true); |
| } |
| |
| @Override |
| public final IBinder onBind(Intent intent) { |
| if (SERVICE_INTERFACE.equals(intent.getAction())) { |
| return mInterface.asBinder(); |
| } |
| return null; |
| } |
| |
| /** |
| * Called during service initialization to tell you when the system is ready |
| * to receive interaction from it. |
| * |
| * <p>You should generally do initialization here rather than in {@link #onCreate}. |
| * |
| * <p>Sub-classes should call it first, since it sets the reference to the sytem-server service. |
| */ |
| // TODO: rename to onConnected() / add onDisconnected()? |
| public void onReady() { |
| if (DEBUG) Log.d(TAG, "onReady()"); |
| } |
| |
| /** |
| * Called to receive data from the application that the user was requested auto-fill for. |
| * |
| * @param token unique token identifying the auto-fill session, it should be used when providing |
| * the auto-filled fields. |
| * @param data Arbitrary data supplied by the app through |
| * {@link android.app.Activity#onProvideAssistData Activity.onProvideAssistData}. |
| * May be {@code null} if data has been disabled by the user or device policy. |
| * @param startFlags currently always 0. |
| * @param structure If available, the structure definition of all windows currently |
| * displayed by the app. May be {@code null} if auto-fill data has been disabled by the user |
| * or device policy; will be an empty stub if the application has disabled auto-fill |
| * by marking its window as secure. |
| */ |
| @SuppressWarnings("unused") |
| // TODO: take the factory approach where this method return a session, and move the callback |
| // methods (like autofill()) to the session. |
| public void onNewSession(String token, Bundle data, int startFlags, AssistStructure structure) { |
| if (DEBUG) Log.d(TAG, "onNewSession(): token=" + token); |
| } |
| |
| /** |
| * Called when an auto-fill session is finished. |
| */ |
| @SuppressWarnings("unused") |
| public void onSessionFinished(String token) { |
| if (DEBUG) Log.d(TAG, "onSessionFinished(): token=" + token); |
| } |
| |
| /** |
| * Called during service de-initialization to tell you when the system is shutting the |
| * service down. |
| * |
| * <p> At this point this service may no longer be an active {@link AutoFillService}. |
| */ |
| public void onShutdown() { |
| if (DEBUG) Log.d(TAG, "onShutdown()"); |
| } |
| } |