1 /*
2  * Copyright (C) 2020 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 
17 package com.android.server.devicestate;
18 
19 import android.annotation.NonNull;
20 
21 /**
22  * Interface for the component responsible for supplying the current device state as well as
23  * configuring the state of the system in response to device state changes.
24  *
25  * @see DeviceStateManagerService
26  */
27 public interface DeviceStatePolicy {
28     /** Returns the provider of device states. */
getDeviceStateProvider()29     DeviceStateProvider getDeviceStateProvider();
30 
31     /**
32      * Configures the system into the provided state. Guaranteed not to be called again until the
33      * {@code onComplete} callback has been executed.
34      *
35      * @param state the state the system should be configured for.
36      * @param onComplete a callback that must be triggered once the system has been properly
37      *                   configured to match the supplied state.
38      */
configureDeviceForState(int state, @NonNull Runnable onComplete)39     void configureDeviceForState(int state, @NonNull Runnable onComplete);
40 }
41