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.settings.biometrics.face; 18 19 import static android.provider.Settings.Secure.FACE_UNLOCK_ALWAYS_REQUIRE_CONFIRMATION; 20 21 import android.content.Context; 22 import android.hardware.biometrics.SensorProperties; 23 import android.hardware.face.FaceManager; 24 import android.hardware.face.FaceSensorProperties; 25 import android.provider.Settings; 26 27 import androidx.preference.Preference; 28 29 import com.android.settings.Utils; 30 31 import java.util.List; 32 33 /** 34 * Preference controller giving the user an option to always require confirmation. 35 */ 36 public class FaceSettingsConfirmPreferenceController extends FaceSettingsPreferenceController { 37 38 static final String KEY = "security_settings_face_require_confirmation"; 39 40 private static final int ON = 1; 41 private static final int OFF = 0; 42 private static final int DEFAULT = OFF; 43 44 private FaceManager mFaceManager; 45 FaceSettingsConfirmPreferenceController(Context context)46 public FaceSettingsConfirmPreferenceController(Context context) { 47 this(context, KEY); 48 } 49 FaceSettingsConfirmPreferenceController(Context context, String preferenceKey)50 public FaceSettingsConfirmPreferenceController(Context context, 51 String preferenceKey) { 52 super(context, preferenceKey); 53 mFaceManager = Utils.getFaceManagerOrNull(context); 54 } 55 56 @Override isChecked()57 public boolean isChecked() { 58 return Settings.Secure.getIntForUser(mContext.getContentResolver(), 59 FACE_UNLOCK_ALWAYS_REQUIRE_CONFIRMATION, DEFAULT, getUserId()) == ON; 60 } 61 62 @Override setChecked(boolean isChecked)63 public boolean setChecked(boolean isChecked) { 64 return Settings.Secure.putIntForUser(mContext.getContentResolver(), 65 FACE_UNLOCK_ALWAYS_REQUIRE_CONFIRMATION, isChecked ? ON : OFF, getUserId()); 66 } 67 68 @Override updateState(Preference preference)69 public void updateState(Preference preference) { 70 super.updateState(preference); 71 if (!FaceSettings.isFaceHardwareDetected(mContext)) { 72 preference.setEnabled(false); 73 } else if (!mFaceManager.hasEnrolledTemplates(getUserId())) { 74 preference.setEnabled(false); 75 } else { 76 preference.setEnabled(true); 77 } 78 } 79 80 @Override getAvailabilityStatus()81 public int getAvailabilityStatus() { 82 List<FaceSensorProperties> properties = mFaceManager.getSensorProperties(); 83 // If a sensor is convenience, it is possible that it becomes weak or strong with 84 // an update. For this reason, the sensor is conditionally unavailable. 85 if (!properties.isEmpty() 86 && properties.get(0).getSensorStrength() == SensorProperties.STRENGTH_CONVENIENCE) { 87 return CONDITIONALLY_UNAVAILABLE; 88 } else { 89 return AVAILABLE; 90 } 91 } 92 } 93