| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License |
| */ |
| |
| package com.android.settings.biometrics.face; |
| |
| import android.content.Context; |
| import android.hardware.face.FaceManager; |
| import android.hardware.face.FaceManager.GetFeatureCallback; |
| import android.hardware.face.FaceManager.SetFeatureCallback; |
| import android.provider.Settings; |
| |
| import androidx.preference.PreferenceScreen; |
| import androidx.preference.SwitchPreference; |
| |
| import com.android.settings.Utils; |
| |
| /** |
| * Preference controller that manages the ability to use face authentication with/without |
| * user attention. See {@link FaceManager#setRequireAttention(boolean, byte[])}. |
| */ |
| public class FaceSettingsAttentionPreferenceController extends FaceSettingsPreferenceController { |
| |
| public static final String KEY = "security_settings_face_require_attention"; |
| |
| private byte[] mToken; |
| private FaceManager mFaceManager; |
| private SwitchPreference mPreference; |
| |
| private final SetFeatureCallback mSetFeatureCallback = new SetFeatureCallback() { |
| @Override |
| public void onCompleted(boolean success, int feature) { |
| if (feature == FaceManager.FEATURE_REQUIRE_ATTENTION) { |
| mPreference.setEnabled(true); |
| if (!success) { |
| mPreference.setChecked(!mPreference.isChecked()); |
| } else { |
| Settings.Secure.putIntForUser(mContext.getContentResolver(), |
| Settings.Secure.FACE_UNLOCK_ATTENTION_REQUIRED, |
| mPreference.isChecked() ? 1 : 0, getUserId()); |
| } |
| } |
| } |
| }; |
| |
| private final GetFeatureCallback mGetFeatureCallback = new GetFeatureCallback() { |
| @Override |
| public void onCompleted(boolean success, int feature, boolean value) { |
| if (feature == FaceManager.FEATURE_REQUIRE_ATTENTION && success) { |
| if (!mFaceManager.hasEnrolledTemplates(getUserId())) { |
| mPreference.setEnabled(false); |
| } else { |
| mPreference.setEnabled(true); |
| mPreference.setChecked(value); |
| } |
| } |
| } |
| }; |
| |
| public FaceSettingsAttentionPreferenceController(Context context, String preferenceKey) { |
| super(context, preferenceKey); |
| mFaceManager = Utils.getFaceManagerOrNull(context); |
| } |
| |
| public FaceSettingsAttentionPreferenceController(Context context) { |
| this(context, KEY); |
| } |
| |
| public void setToken(byte[] token) { |
| mToken = token; |
| } |
| |
| /** |
| * Displays preference in this controller. |
| */ |
| @Override |
| public void displayPreference(PreferenceScreen screen) { |
| super.displayPreference(screen); |
| mPreference = screen.findPreference(KEY); |
| } |
| |
| @Override |
| public boolean isChecked() { |
| if (!FaceSettings.isFaceHardwareDetected(mContext)) { |
| return true; |
| } |
| // Set to disabled until we know the true value. |
| mPreference.setEnabled(false); |
| mFaceManager.getFeature(getUserId(), FaceManager.FEATURE_REQUIRE_ATTENTION, |
| mGetFeatureCallback); |
| |
| // Ideally returns a cached value. |
| return true; |
| } |
| |
| @Override |
| public boolean setChecked(boolean isChecked) { |
| // Optimistically update state and set to disabled until we know it succeeded. |
| mPreference.setEnabled(false); |
| mPreference.setChecked(isChecked); |
| |
| mFaceManager.setFeature(getUserId(), FaceManager.FEATURE_REQUIRE_ATTENTION, isChecked, |
| mToken, mSetFeatureCallback); |
| return true; |
| } |
| |
| @Override |
| public boolean isSliceable() { |
| return false; |
| } |
| |
| @Override |
| public int getAvailabilityStatus() { |
| return AVAILABLE; |
| } |
| } |