1 /* 2 * Copyright (C) 2017 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.settings.development; 18 19 import android.app.backup.IBackupManager; 20 import android.content.Context; 21 import android.os.RemoteException; 22 import android.os.ServiceManager; 23 import android.os.UserManager; 24 import android.support.annotation.VisibleForTesting; 25 import android.support.v7.preference.Preference; 26 27 import com.android.settings.R; 28 import com.android.settings.core.PreferenceControllerMixin; 29 import com.android.settingslib.development.DeveloperOptionsPreferenceController; 30 31 public class LocalBackupPasswordPreferenceController extends DeveloperOptionsPreferenceController 32 implements PreferenceControllerMixin { 33 34 private static final String LOCAL_BACKUP_PASSWORD = "local_backup_password"; 35 36 private final UserManager mUserManager; 37 private final IBackupManager mBackupManager; 38 LocalBackupPasswordPreferenceController(Context context)39 public LocalBackupPasswordPreferenceController(Context context) { 40 super(context); 41 42 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 43 mBackupManager = IBackupManager.Stub.asInterface( 44 ServiceManager.getService(Context.BACKUP_SERVICE)); 45 } 46 47 @Override getPreferenceKey()48 public String getPreferenceKey() { 49 return LOCAL_BACKUP_PASSWORD; 50 } 51 52 @Override updateState(Preference preference)53 public void updateState(Preference preference) { 54 updatePasswordSummary(preference); 55 } 56 updatePasswordSummary(Preference preference)57 private void updatePasswordSummary(Preference preference) { 58 preference.setEnabled(isAdminUser() && mBackupManager != null); 59 if (mBackupManager == null) { 60 return; 61 } 62 try { 63 if (mBackupManager.hasBackupPassword()) { 64 preference.setSummary(R.string.local_backup_password_summary_change); 65 } else { 66 preference.setSummary(R.string.local_backup_password_summary_none); 67 } 68 } catch (RemoteException e) { 69 // Not much we can do here 70 } 71 } 72 73 @VisibleForTesting isAdminUser()74 boolean isAdminUser() { 75 return mUserManager.isAdminUser(); 76 } 77 } 78