1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License
15 */
16
17package android.app;
18
19import android.os.Bundle;
20import android.os.IRemoteCallback;
21import android.os.RemoteException;
22
23/**
24 * Base class for synchronous implementations of {@link IUserSwitchObserver}
25 *
26 * @hide
27 */
28public abstract class SynchronousUserSwitchObserver extends IUserSwitchObserver.Stub {
29    /**
30     * Calls {@link #onUserSwitching(int)} and notifies {@code reply} by calling
31     * {@link IRemoteCallback#sendResult(Bundle)}.
32     */
33    @Override
34    public final void onUserSwitching(int newUserId, IRemoteCallback reply) throws RemoteException {
35        try {
36            onUserSwitching(newUserId);
37        } finally {
38            if (reply != null) {
39                reply.sendResult(null);
40            }
41        }
42    }
43
44    /**
45     * Synchronous version of {@link IUserSwitchObserver#onUserSwitching(int, IRemoteCallback)}
46     */
47    public abstract void onUserSwitching(int newUserId) throws RemoteException;
48}
49