1 /* 2 * Copyright (C) 2022 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.devicelockcontroller.policy; 18 19 import androidx.annotation.IntDef; 20 21 import com.android.devicelockcontroller.policy.DeviceStateController.DeviceState; 22 23 import com.google.common.util.concurrent.ListenableFuture; 24 25 import java.lang.annotation.ElementType; 26 import java.lang.annotation.Retention; 27 import java.lang.annotation.RetentionPolicy; 28 import java.lang.annotation.Target; 29 30 /** 31 * Interface used for setting policies for a given state. 32 */ 33 public interface PolicyHandler { 34 /** Result Type for operation */ 35 @Target(ElementType.TYPE_USE) 36 @IntDef(value = {SUCCESS, FAILURE}) 37 @Retention(RetentionPolicy.SOURCE) 38 @interface ResultType { 39 } 40 41 int SUCCESS = 0; 42 int FAILURE = 1; 43 44 /** 45 * Sets the policy state based on the new state. Throws SecurityException when the app is not 46 * privileged. 47 */ 48 @ResultType setPolicyForState(@eviceState int state)49 ListenableFuture<@ResultType Integer> setPolicyForState(@DeviceState int state); 50 } 51