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.server.devicepolicy; 18 19 import android.annotation.NonNull; 20 import android.app.admin.PolicyValue; 21 22 import java.util.ArrayList; 23 import java.util.LinkedHashMap; 24 import java.util.List; 25 26 final class MostRestrictive<V> extends ResolutionMechanism<V> { 27 28 private List<PolicyValue<V>> mMostToLeastRestrictive; 29 MostRestrictive(@onNull List<PolicyValue<V>> mostToLeastRestrictive)30 MostRestrictive(@NonNull List<PolicyValue<V>> mostToLeastRestrictive) { 31 mMostToLeastRestrictive = mostToLeastRestrictive; 32 } 33 34 @Override resolve(@onNull LinkedHashMap<EnforcingAdmin, PolicyValue<V>> adminPolicies)35 PolicyValue<V> resolve(@NonNull LinkedHashMap<EnforcingAdmin, PolicyValue<V>> adminPolicies) { 36 return resolve(new ArrayList<>(adminPolicies.values())); 37 } 38 39 @Override resolve(List<PolicyValue<V>> adminPolicies)40 PolicyValue<V> resolve(List<PolicyValue<V>> adminPolicies) { 41 if (adminPolicies.isEmpty()) { 42 return null; 43 } 44 for (PolicyValue<V> value : mMostToLeastRestrictive) { 45 if (adminPolicies.contains(value)) { 46 return value; 47 } 48 } 49 // Return first set policy if none can be found in known values 50 return adminPolicies.get(0); 51 } 52 53 @Override getParcelableResolutionMechanism()54 android.app.admin.MostRestrictive<V> getParcelableResolutionMechanism() { 55 return new android.app.admin.MostRestrictive<V>(mMostToLeastRestrictive); 56 } 57 58 @Override toString()59 public String toString() { 60 return "MostRestrictive { mMostToLeastRestrictive= " + mMostToLeastRestrictive + " }"; 61 } 62 } 63