| /* |
| * Copyright (C) 2014 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.systemui.statusbar.phone; |
| |
| import android.content.Context; |
| |
| import com.android.internal.widget.LockPatternUtils; |
| import com.android.keyguard.KeyguardUpdateMonitor; |
| import com.android.keyguard.KeyguardUpdateMonitorCallback; |
| |
| import java.util.ArrayList; |
| |
| /** |
| * Caches whether the current unlock method is insecure, taking trust into account. This information |
| * might be a little bit out of date and should not be used for actual security decisions; it should |
| * be only used for visual indications. |
| */ |
| public class UnlockMethodCache { |
| |
| private static UnlockMethodCache sInstance; |
| |
| private final LockPatternUtils mLockPatternUtils; |
| private final KeyguardUpdateMonitor mKeyguardUpdateMonitor; |
| private final ArrayList<OnUnlockMethodChangedListener> mListeners = new ArrayList<>(); |
| /** Whether the user configured a secure unlock method (PIN, password, etc.) */ |
| private boolean mSecure; |
| /** Whether the unlock method is currently insecure (insecure method or trusted environment) */ |
| private boolean mCurrentlyInsecure; |
| private boolean mTrustManaged; |
| private boolean mFaceUnlockRunning; |
| |
| private UnlockMethodCache(Context ctx) { |
| mLockPatternUtils = new LockPatternUtils(ctx); |
| mKeyguardUpdateMonitor = KeyguardUpdateMonitor.getInstance(ctx); |
| KeyguardUpdateMonitor.getInstance(ctx).registerCallback(mCallback); |
| update(true /* updateAlways */); |
| } |
| |
| public static UnlockMethodCache getInstance(Context context) { |
| if (sInstance == null) { |
| sInstance = new UnlockMethodCache(context); |
| } |
| return sInstance; |
| } |
| |
| /** |
| * @return whether the user configured a secure unlock method like PIN, password, etc. |
| */ |
| public boolean isMethodSecure() { |
| return mSecure; |
| } |
| |
| /** |
| * @return whether the lockscreen is currently insecure, i. e. the bouncer won't be shown |
| */ |
| public boolean isCurrentlyInsecure() { |
| return mCurrentlyInsecure; |
| } |
| |
| public void addListener(OnUnlockMethodChangedListener listener) { |
| mListeners.add(listener); |
| } |
| |
| public void removeListener(OnUnlockMethodChangedListener listener) { |
| mListeners.remove(listener); |
| } |
| |
| private void update(boolean updateAlways) { |
| int user = mLockPatternUtils.getCurrentUser(); |
| boolean secure = mLockPatternUtils.isSecure(user); |
| boolean currentlyInsecure = !secure || mKeyguardUpdateMonitor.getUserHasTrust(user); |
| boolean trustManaged = mKeyguardUpdateMonitor.getUserTrustIsManaged(user); |
| boolean faceUnlockRunning = mKeyguardUpdateMonitor.isFaceUnlockRunning(user) |
| && trustManaged; |
| boolean changed = secure != mSecure || currentlyInsecure != mCurrentlyInsecure || |
| trustManaged != mTrustManaged || faceUnlockRunning != mFaceUnlockRunning; |
| if (changed || updateAlways) { |
| mSecure = secure; |
| mCurrentlyInsecure = currentlyInsecure; |
| mTrustManaged = trustManaged; |
| mFaceUnlockRunning = faceUnlockRunning; |
| notifyListeners(); |
| } |
| } |
| |
| private void notifyListeners() { |
| for (OnUnlockMethodChangedListener listener : mListeners) { |
| listener.onUnlockMethodStateChanged(); |
| } |
| } |
| |
| private final KeyguardUpdateMonitorCallback mCallback = new KeyguardUpdateMonitorCallback() { |
| @Override |
| public void onUserSwitchComplete(int userId) { |
| update(false /* updateAlways */); |
| } |
| |
| @Override |
| public void onTrustChanged(int userId) { |
| update(false /* updateAlways */); |
| } |
| |
| @Override |
| public void onTrustManagedChanged(int userId) { |
| update(false /* updateAlways */); |
| } |
| |
| @Override |
| public void onScreenTurnedOn() { |
| update(false /* updateAlways */); |
| } |
| |
| @Override |
| public void onFingerprintAuthenticated(int userId) { |
| update(false /* updateAlways */); |
| } |
| |
| @Override |
| public void onFaceUnlockStateChanged(boolean running, int userId) { |
| update(false /* updateAlways */); |
| } |
| }; |
| |
| public boolean isTrustManaged() { |
| return mTrustManaged; |
| } |
| |
| public boolean isFaceUnlockRunning() { |
| return mFaceUnlockRunning; |
| } |
| |
| public static interface OnUnlockMethodChangedListener { |
| void onUnlockMethodStateChanged(); |
| } |
| } |