1 /* 2 * Copyright (C) 2018 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; 18 19 import static com.android.settings.Utils.SETTINGS_PACKAGE_NAME; 20 import static com.android.settings.biometrics.BiometricEnrollBase.EXTRA_FROM_SETTINGS_SUMMARY; 21 22 import android.content.Context; 23 import android.content.Intent; 24 import android.os.UserHandle; 25 import android.os.UserManager; 26 import android.text.TextUtils; 27 28 import androidx.preference.Preference; 29 30 import com.android.internal.widget.LockPatternUtils; 31 import com.android.settings.Utils; 32 import com.android.settings.core.BasePreferenceController; 33 import com.android.settings.overlay.FeatureFactory; 34 35 public abstract class BiometricStatusPreferenceController extends BasePreferenceController { 36 37 protected final UserManager mUm; 38 protected final LockPatternUtils mLockPatternUtils; 39 40 private final int mUserId = UserHandle.myUserId(); 41 protected final int mProfileChallengeUserId; 42 43 /** 44 * @return true if the manager is not null and the hardware is detected. 45 */ isDeviceSupported()46 protected abstract boolean isDeviceSupported(); 47 48 /** 49 * @return true if the user has enrolled biometrics of the subclassed type. 50 */ hasEnrolledBiometrics()51 protected abstract boolean hasEnrolledBiometrics(); 52 53 /** 54 * @return the summary text if biometrics are enrolled. 55 */ getSummaryTextEnrolled()56 protected abstract String getSummaryTextEnrolled(); 57 58 /** 59 * @return the summary text if no biometrics are enrolled. 60 */ getSummaryTextNoneEnrolled()61 protected abstract String getSummaryTextNoneEnrolled(); 62 63 /** 64 * @return the class name for the settings page. 65 */ getSettingsClassName()66 protected abstract String getSettingsClassName(); 67 68 /** 69 * @return the class name for entry to enrollment. 70 */ getEnrollClassName()71 protected abstract String getEnrollClassName(); 72 BiometricStatusPreferenceController(Context context, String key)73 public BiometricStatusPreferenceController(Context context, String key) { 74 super(context, key); 75 mUm = (UserManager) context.getSystemService(Context.USER_SERVICE); 76 mLockPatternUtils = FeatureFactory.getFactory(context) 77 .getSecurityFeatureProvider() 78 .getLockPatternUtils(context); 79 mProfileChallengeUserId = Utils.getManagedProfileId(mUm, mUserId); 80 } 81 82 @Override getAvailabilityStatus()83 public int getAvailabilityStatus() { 84 if (!isDeviceSupported()) { 85 return UNSUPPORTED_ON_DEVICE; 86 } 87 if (isUserSupported()) { 88 return AVAILABLE; 89 } else { 90 return DISABLED_FOR_USER; 91 } 92 } 93 94 @Override updateState(Preference preference)95 public void updateState(Preference preference) { 96 if (!isAvailable()) { 97 if (preference != null) { 98 preference.setVisible(false); 99 } 100 return; 101 } else { 102 preference.setVisible(true); 103 } 104 preference.setSummary(hasEnrolledBiometrics() ? getSummaryTextEnrolled() 105 : getSummaryTextNoneEnrolled()); 106 } 107 108 @Override handlePreferenceTreeClick(Preference preference)109 public boolean handlePreferenceTreeClick(Preference preference) { 110 if (!TextUtils.equals(preference.getKey(), getPreferenceKey())) { 111 return super.handlePreferenceTreeClick(preference); 112 } 113 114 final Context context = preference.getContext(); 115 final UserManager userManager = UserManager.get(context); 116 final int userId = getUserId(); 117 if (Utils.startQuietModeDialogIfNecessary(context, userManager, userId)) { 118 return false; 119 } 120 121 final Intent intent = new Intent(); 122 final String clazz = hasEnrolledBiometrics() ? getSettingsClassName() 123 : getEnrollClassName(); 124 intent.setClassName(SETTINGS_PACKAGE_NAME, clazz); 125 intent.putExtra(Intent.EXTRA_USER_ID, userId); 126 intent.putExtra(EXTRA_FROM_SETTINGS_SUMMARY, true); 127 context.startActivity(intent); 128 return true; 129 } 130 getUserId()131 protected int getUserId() { 132 return mUserId; 133 } 134 isUserSupported()135 protected boolean isUserSupported() { 136 return true; 137 } 138 } 139