| /* |
| * Copyright (C) 2013 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.server.policy.keyguard; |
| |
| import android.app.ActivityManager; |
| import android.content.Context; |
| import android.os.RemoteException; |
| import android.util.Slog; |
| |
| import com.android.internal.policy.IKeyguardService; |
| import com.android.internal.policy.IKeyguardStateCallback; |
| import com.android.internal.widget.LockPatternUtils; |
| |
| /** |
| * Maintains a cached copy of Keyguard's state. |
| * @hide |
| */ |
| public class KeyguardStateMonitor extends IKeyguardStateCallback.Stub { |
| private static final String TAG = "KeyguardStateMonitor"; |
| |
| // These cache the current state of Keyguard to improve performance and avoid deadlock. After |
| // Keyguard changes its state, it always triggers a layout in window manager. Because |
| // IKeyguardStateCallback is synchronous and because these states are declared volatile, it's |
| // guaranteed that window manager picks up the new state all the time in the layout caused by |
| // the state change of Keyguard. |
| private volatile boolean mIsShowing; |
| private volatile boolean mSimSecure; |
| private volatile boolean mInputRestricted; |
| |
| private final LockPatternUtils mLockPatternUtils; |
| |
| public KeyguardStateMonitor(Context context, IKeyguardService service) { |
| mLockPatternUtils = new LockPatternUtils(context); |
| mLockPatternUtils.setCurrentUser(ActivityManager.getCurrentUser()); |
| try { |
| service.addStateMonitorCallback(this); |
| } catch (RemoteException e) { |
| Slog.w(TAG, "Remote Exception", e); |
| } |
| } |
| |
| public boolean isShowing() { |
| return mIsShowing; |
| } |
| |
| public boolean isSecure() { |
| return mLockPatternUtils.isSecure(mLockPatternUtils.getCurrentUser()) || mSimSecure; |
| } |
| |
| public boolean isInputRestricted() { |
| return mInputRestricted; |
| } |
| |
| @Override // Binder interface |
| public void onShowingStateChanged(boolean showing) { |
| mIsShowing = showing; |
| } |
| |
| @Override // Binder interface |
| public void onSimSecureStateChanged(boolean simSecure) { |
| mSimSecure = simSecure; |
| } |
| |
| public void setCurrentUser(int userId) { |
| mLockPatternUtils.setCurrentUser(userId); |
| } |
| |
| @Override // Binder interface |
| public void onInputRestrictedStateChanged(boolean inputRestricted) { |
| mInputRestricted = inputRestricted; |
| } |
| } |