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.face; 18 19 import android.app.AlertDialog; 20 import android.app.Dialog; 21 import android.app.settings.SettingsEnums; 22 import android.content.Context; 23 import android.content.DialogInterface; 24 import android.hardware.face.Face; 25 import android.hardware.face.FaceManager; 26 import android.os.Bundle; 27 import android.util.Log; 28 import android.view.View; 29 import android.widget.Button; 30 import android.widget.Toast; 31 32 import androidx.preference.Preference; 33 34 import com.android.settings.R; 35 import com.android.settings.SettingsActivity; 36 import com.android.settings.core.BasePreferenceController; 37 import com.android.settings.core.instrumentation.InstrumentedDialogFragment; 38 import com.android.settings.overlay.FeatureFactory; 39 import com.android.settingslib.core.instrumentation.MetricsFeatureProvider; 40 import com.android.settingslib.widget.LayoutPreference; 41 42 import com.google.android.setupdesign.util.ButtonStyler; 43 import com.google.android.setupdesign.util.PartnerStyleHelper; 44 45 import java.util.List; 46 47 /** 48 * Controller for the remove button. This assumes that there is only a single face enrolled. The UI 49 * will likely change if multiple enrollments are allowed/supported. 50 */ 51 public class FaceSettingsRemoveButtonPreferenceController extends BasePreferenceController 52 implements View.OnClickListener { 53 54 private static final String TAG = "FaceSettings/Remove"; 55 static final String KEY = "security_settings_face_delete_faces_container"; 56 57 public static class ConfirmRemoveDialog extends InstrumentedDialogFragment { 58 59 private DialogInterface.OnClickListener mOnClickListener; 60 61 @Override getMetricsCategory()62 public int getMetricsCategory() { 63 return SettingsEnums.DIALOG_FACE_REMOVE; 64 } 65 66 @Override onCreateDialog(Bundle savedInstanceState)67 public Dialog onCreateDialog(Bundle savedInstanceState) { 68 AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); 69 70 builder.setTitle(R.string.security_settings_face_settings_remove_dialog_title) 71 .setMessage(R.string.security_settings_face_settings_remove_dialog_details) 72 .setPositiveButton(R.string.delete, mOnClickListener) 73 .setNegativeButton(R.string.cancel, mOnClickListener); 74 AlertDialog dialog = builder.create(); 75 dialog.setCanceledOnTouchOutside(false); 76 return dialog; 77 } 78 setOnClickListener(DialogInterface.OnClickListener listener)79 public void setOnClickListener(DialogInterface.OnClickListener listener) { 80 mOnClickListener = listener; 81 } 82 } 83 84 interface Listener { onRemoved()85 void onRemoved(); 86 } 87 88 private Preference mPreference; 89 private Button mButton; 90 private Listener mListener; 91 private SettingsActivity mActivity; 92 private int mUserId; 93 private boolean mRemoving; 94 95 private final MetricsFeatureProvider mMetricsFeatureProvider; 96 private final Context mContext; 97 private final FaceManager mFaceManager; 98 private final FaceManager.RemovalCallback mRemovalCallback = new FaceManager.RemovalCallback() { 99 @Override 100 public void onRemovalError(Face face, int errMsgId, CharSequence errString) { 101 Log.e(TAG, "Unable to remove face: " + face.getBiometricId() 102 + " error: " + errMsgId + " " + errString); 103 Toast.makeText(mContext, errString, Toast.LENGTH_SHORT).show(); 104 mRemoving = false; 105 } 106 107 @Override 108 public void onRemovalSucceeded(Face face, int remaining) { 109 if (remaining == 0) { 110 final List<Face> faces = mFaceManager.getEnrolledFaces(mUserId); 111 if (!faces.isEmpty()) { 112 mButton.setEnabled(true); 113 } else { 114 mRemoving = false; 115 mListener.onRemoved(); 116 } 117 } else { 118 Log.v(TAG, "Remaining: " + remaining); 119 } 120 } 121 }; 122 123 private final DialogInterface.OnClickListener mOnClickListener 124 = new DialogInterface.OnClickListener() { 125 @Override 126 public void onClick(DialogInterface dialog, int which) { 127 if (which == DialogInterface.BUTTON_POSITIVE) { 128 mButton.setEnabled(false); 129 final List<Face> faces = mFaceManager.getEnrolledFaces(mUserId); 130 if (faces.isEmpty()) { 131 Log.e(TAG, "No faces"); 132 return; 133 } 134 if (faces.size() > 1) { 135 Log.e(TAG, "Multiple enrollments: " + faces.size()); 136 } 137 138 // Remove the first/only face 139 mFaceManager.remove(faces.get(0), mUserId, mRemovalCallback); 140 } else { 141 mButton.setEnabled(true); 142 mRemoving = false; 143 } 144 } 145 }; 146 FaceSettingsRemoveButtonPreferenceController(Context context, String preferenceKey)147 public FaceSettingsRemoveButtonPreferenceController(Context context, String preferenceKey) { 148 super(context, preferenceKey); 149 mContext = context; 150 mFaceManager = context.getSystemService(FaceManager.class); 151 mMetricsFeatureProvider = FeatureFactory.getFactory(context).getMetricsFeatureProvider(); 152 } 153 FaceSettingsRemoveButtonPreferenceController(Context context)154 public FaceSettingsRemoveButtonPreferenceController(Context context) { 155 this(context, KEY); 156 } 157 setUserId(int userId)158 public void setUserId(int userId) { 159 mUserId = userId; 160 } 161 162 @Override updateState(Preference preference)163 public void updateState(Preference preference) { 164 super.updateState(preference); 165 166 mPreference = preference; 167 mButton = ((LayoutPreference) preference) 168 .findViewById(R.id.security_settings_face_settings_remove_button); 169 170 if (PartnerStyleHelper.shouldApplyPartnerResource(mButton)) { 171 ButtonStyler.applyPartnerCustomizationPrimaryButtonStyle(mContext, mButton); 172 } 173 174 mButton.setOnClickListener(this); 175 176 if (!FaceSettings.isFaceHardwareDetected(mContext)) { 177 mButton.setEnabled(false); 178 } else { 179 mButton.setEnabled(!mRemoving); 180 } 181 } 182 183 @Override getAvailabilityStatus()184 public int getAvailabilityStatus() { 185 return AVAILABLE; 186 } 187 188 @Override getPreferenceKey()189 public String getPreferenceKey() { 190 return KEY; 191 } 192 193 @Override onClick(View v)194 public void onClick(View v) { 195 if (v == mButton) { 196 mMetricsFeatureProvider.logClickedPreference(mPreference, getMetricsCategory()); 197 mRemoving = true; 198 ConfirmRemoveDialog dialog = new ConfirmRemoveDialog(); 199 dialog.setOnClickListener(mOnClickListener); 200 dialog.show(mActivity.getSupportFragmentManager(), ConfirmRemoveDialog.class.getName()); 201 } 202 } 203 setListener(Listener listener)204 public void setListener(Listener listener) { 205 mListener = listener; 206 } 207 setActivity(SettingsActivity activity)208 public void setActivity(SettingsActivity activity) { 209 mActivity = activity; 210 } 211 } 212