1 /*
2  * Copyright (C) 2021 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.networkstack.apishim.common;
18 
19 import androidx.annotation.Nullable;
20 
21 import java.util.List;
22 import java.util.concurrent.Executor;
23 
24 /**
25  * Interface used to access API methods in {@link android.telephony.TelephonyManager}, with
26  * appropriate fallbacks if the methods are not yet part of the released API.
27  *
28  * <p>This interface makes it easier for callers to use TelephonyManagerShimImpl, as it's more
29  * obvious what methods must be implemented on each API level, and it abstracts from callers the
30  * need to reference classes that have different implementations (which also does not work well
31  * with IDEs).
32  */
33 public interface TelephonyManagerShim {
34     /** See android.telephony.TelephonyManager.CarrierPrivilegesListener */
35     interface CarrierPrivilegesListenerShim {
36         /** See android.telephony.TelephonyManager
37          * .CarrierPrivilegesCallback#onCarrierPrivilegesChanged */
onCarrierPrivilegesChanged( List<String> privilegedPackageNames, int[] privilegedUids)38         default void onCarrierPrivilegesChanged(
39                 List<String> privilegedPackageNames,
40                 int[] privilegedUids) {}
41         // TODO : remove the default implementation of this method once all changes are in
42         /** See CarrierPrivilegesCallback#onCarrierServiceChanged */
onCarrierServiceChanged( @ullable String carrierServicePackageName, int carrierServiceUid)43         default void onCarrierServiceChanged(
44                 @Nullable String carrierServicePackageName,
45                 int carrierServiceUid) {}
46     }
47 
48     /** See android.telephony.TelephonyManager#addCarrierPrivilegesListener */
addCarrierPrivilegesListener( int logicalSlotIndex, Executor executor, CarrierPrivilegesListenerShim listener)49     default void addCarrierPrivilegesListener(
50             int logicalSlotIndex,
51             Executor executor,
52             CarrierPrivilegesListenerShim listener)
53             throws UnsupportedApiLevelException {
54         throw new UnsupportedApiLevelException("Only supported starting from API 33");
55     }
56 
57     /** See android.telephony.TelephonyManager#addCarrierPrivilegesListener */
removeCarrierPrivilegesListener( CarrierPrivilegesListenerShim listener)58     default void removeCarrierPrivilegesListener(
59             CarrierPrivilegesListenerShim listener)
60             throws UnsupportedApiLevelException {
61         throw new UnsupportedApiLevelException("Only supported starting from API 33");
62     }
63 
64     // TODO : remove this method when all changes are in
65     /** See android.telephony.TelephonyManager#getCarrierServicePackageNameForLogicalSlot */
getCarrierServicePackageNameForLogicalSlot(int logicalSlotIndex)66     default String getCarrierServicePackageNameForLogicalSlot(int logicalSlotIndex)
67             throws UnsupportedApiLevelException {
68         throw new UnsupportedApiLevelException("Only supported starting from API 33");
69     }
70 }
71