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.car.settings.security; 18 19 import android.content.Context; 20 import android.os.Bundle; 21 import android.os.UserHandle; 22 import android.view.View; 23 import android.widget.TextView; 24 25 import com.android.car.settings.R; 26 import com.android.car.settings.common.BaseFragment; 27 import com.android.internal.widget.LockPatternUtils; 28 import com.android.internal.widget.LockPatternView; 29 30 import java.util.List; 31 32 /** 33 * Fragment for confirming existing lock pattern 34 */ 35 public class ConfirmLockPatternFragment extends BaseFragment { 36 37 private static final String FRAGMENT_TAG_CHECK_LOCK_WORKER = "check_lock_worker"; 38 // Time we wait before clearing a wrong pattern and the error message. 39 private static final long CLEAR_WRONG_ATTEMPT_TIMEOUT_MS = 2500L; 40 41 private LockPatternView mLockPatternView; 42 private TextView mMsgView; 43 44 private LockPatternUtils mLockPatternUtils; 45 private CheckLockWorker mCheckLockWorker; 46 private CheckLockListener mCheckLockListener; 47 48 private int mUserId; 49 private List<LockPatternView.Cell> mPattern; 50 51 /** 52 * Factory method for creating ConfirmLockPatternFragment 53 */ newInstance()54 public static ConfirmLockPatternFragment newInstance() { 55 ConfirmLockPatternFragment patternFragment = new ConfirmLockPatternFragment(); 56 Bundle bundle = BaseFragment.getBundle(); 57 bundle.putInt(EXTRA_TITLE_ID, R.string.security_settings_title); 58 bundle.putInt(EXTRA_ACTION_BAR_LAYOUT, R.layout.action_bar_with_button); 59 bundle.putInt(EXTRA_LAYOUT, R.layout.confirm_lock_pattern_fragment); 60 patternFragment.setArguments(bundle); 61 return patternFragment; 62 } 63 64 @Override onAttach(Context context)65 public void onAttach(Context context) { 66 super.onAttach(context); 67 if ((getActivity() instanceof CheckLockListener)) { 68 mCheckLockListener = (CheckLockListener) getActivity(); 69 } else { 70 throw new RuntimeException("The activity must implement CheckLockListener"); 71 } 72 } 73 74 @Override onCreate(Bundle savedInstanceState)75 public void onCreate(Bundle savedInstanceState) { 76 super.onCreate(savedInstanceState); 77 mLockPatternUtils = new LockPatternUtils(getContext()); 78 mUserId = UserHandle.myUserId(); 79 } 80 81 @Override onViewCreated(View view, Bundle savedInstanceState)82 public void onViewCreated(View view, Bundle savedInstanceState) { 83 super.onViewCreated(view, savedInstanceState); 84 85 mMsgView = (TextView) view.findViewById(R.id.message); 86 mLockPatternView = (LockPatternView) view.findViewById(R.id.lockPattern); 87 mLockPatternView.setFadePattern(false); 88 mLockPatternView.setInStealthMode(!mLockPatternUtils.isVisiblePatternEnabled(mUserId)); 89 mLockPatternView.setOnPatternListener(mLockPatternListener); 90 91 if (savedInstanceState != null) { 92 mCheckLockWorker = (CheckLockWorker) getFragmentManager().findFragmentByTag( 93 FRAGMENT_TAG_CHECK_LOCK_WORKER); 94 } 95 } 96 97 @Override onStart()98 public void onStart() { 99 super.onStart(); 100 if (mCheckLockWorker != null) { 101 mCheckLockWorker.setListener(this::onCheckCompleted); 102 } 103 } 104 105 @Override onStop()106 public void onStop() { 107 super.onStop(); 108 if (mCheckLockWorker != null) { 109 mCheckLockWorker.setListener(null); 110 } 111 } 112 113 private Runnable mClearErrorRunnable = () -> { 114 mLockPatternView.clearPattern(); 115 mMsgView.setText(""); 116 }; 117 118 private LockPatternView.OnPatternListener mLockPatternListener = 119 new LockPatternView.OnPatternListener() { 120 121 public void onPatternStart() { 122 mLockPatternView.removeCallbacks(mClearErrorRunnable); 123 mMsgView.setText(""); 124 } 125 126 public void onPatternCleared() { 127 mLockPatternView.removeCallbacks(mClearErrorRunnable); 128 } 129 130 public void onPatternCellAdded(List<LockPatternView.Cell> pattern) {} 131 132 public void onPatternDetected(List<LockPatternView.Cell> pattern) { 133 mLockPatternView.setEnabled(false); 134 135 if (mCheckLockWorker == null) { 136 mCheckLockWorker = new CheckLockWorker(); 137 mCheckLockWorker.setListener(ConfirmLockPatternFragment.this::onCheckCompleted); 138 139 getFragmentManager() 140 .beginTransaction() 141 .add(mCheckLockWorker, FRAGMENT_TAG_CHECK_LOCK_WORKER) 142 .commitNow(); 143 } 144 145 mPattern = pattern; 146 mCheckLockWorker.checkPattern(mUserId, pattern); 147 } 148 }; 149 onCheckCompleted(boolean lockMatched)150 private void onCheckCompleted(boolean lockMatched) { 151 if (lockMatched) { 152 mCheckLockListener.onLockVerified(LockPatternUtils.patternToString(mPattern)); 153 } else { 154 mLockPatternView.setEnabled(true); 155 mMsgView.setText(R.string.lockpattern_pattern_wrong); 156 157 // Set timer to clear wrong pattern 158 mLockPatternView.removeCallbacks(mClearErrorRunnable); 159 mLockPatternView.postDelayed(mClearErrorRunnable, CLEAR_WRONG_ATTEMPT_TIMEOUT_MS); 160 } 161 } 162 } 163