1 /* 2 * Copyright (C) 2019 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.backup; 18 19 import android.content.Context; 20 import android.content.SharedPreferences; 21 22 import java.io.File; 23 import java.util.Collections; 24 import java.util.HashMap; 25 import java.util.HashSet; 26 import java.util.List; 27 import java.util.Map; 28 import java.util.Set; 29 30 /** Manages the persisted backup preferences per user. */ 31 public class UserBackupPreferences { 32 private static final String PREFERENCES_FILE = "backup_preferences"; 33 34 private final SharedPreferences mPreferences; 35 private final SharedPreferences.Editor mEditor; 36 UserBackupPreferences(Context conext, File storageDir)37 UserBackupPreferences(Context conext, File storageDir) { 38 File excludedKeysFile = new File(storageDir, PREFERENCES_FILE); 39 mPreferences = conext.getSharedPreferences(excludedKeysFile, Context.MODE_PRIVATE); 40 mEditor = mPreferences.edit(); 41 } 42 addExcludedKeys(String packageName, List<String> keys)43 void addExcludedKeys(String packageName, List<String> keys) { 44 Set<String> existingKeys = 45 new HashSet<>(mPreferences.getStringSet(packageName, Collections.emptySet())); 46 existingKeys.addAll(keys); 47 mEditor.putStringSet(packageName, existingKeys); 48 mEditor.commit(); 49 } 50 getExcludedRestoreKeysForPackage(String packageName)51 Set<String> getExcludedRestoreKeysForPackage(String packageName) { 52 return mPreferences.getStringSet(packageName, Collections.emptySet()); 53 } 54 } 55