| /* |
| * Copyright (C) 2015 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.vr; |
| |
| import android.app.AppOpsManager; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.pm.PackageManager; |
| import android.os.Binder; |
| import android.os.IBinder; |
| import android.os.UserHandle; |
| import android.util.ArraySet; |
| import android.util.Slog; |
| |
| import com.android.server.SystemService; |
| |
| import java.util.ArrayList; |
| |
| /** |
| * Service tracking whether VR mode is active, and notifying listening system services of state |
| * changes. |
| * |
| * {@hide} |
| */ |
| public class VrManagerService extends SystemService { |
| |
| public static final String TAG = "VrManagerService"; |
| |
| private static native void initializeNative(); |
| private static native void setVrModeNative(boolean enabled); |
| |
| private final Object mLock = new Object(); |
| |
| private final IBinder mOverlayToken = new Binder(); |
| |
| private boolean mVrModeEnabled = false; |
| private ArraySet<VrStateListener> mListeners = new ArraySet<>(); |
| |
| private final class LocalService extends VrManagerInternal { |
| @Override |
| public boolean isInVrMode() { |
| return VrManagerService.this.getVrMode(); |
| } |
| |
| @Override |
| public void setVrMode(boolean enabled) { |
| VrManagerService.this.setVrMode(enabled); |
| } |
| |
| @Override |
| public void registerListener(VrStateListener listener) { |
| VrManagerService.this.addListener(listener); |
| } |
| |
| @Override |
| public void unregisterListener(VrStateListener listener) { |
| VrManagerService.this.removeListener(listener); |
| } |
| } |
| |
| public VrManagerService(Context context) { |
| super(context); |
| } |
| |
| @Override |
| public void onStart() { |
| synchronized(mLock) { |
| initializeNative(); |
| } |
| |
| publishLocalService(VrManagerInternal.class, new LocalService()); |
| } |
| |
| private void addListener(VrStateListener listener) { |
| synchronized (mLock) { |
| mListeners.add(listener); |
| } |
| } |
| |
| private void removeListener(VrStateListener listener) { |
| synchronized (mLock) { |
| mListeners.remove(listener); |
| } |
| } |
| |
| private void setVrMode(boolean enabled) { |
| synchronized (mLock) { |
| if (mVrModeEnabled != enabled) { |
| mVrModeEnabled = enabled; |
| // Log mode change event. |
| Slog.i(TAG, "VR mode " + ((mVrModeEnabled) ? "enabled" : "disabled")); |
| setVrModeNative(mVrModeEnabled); |
| updateOverlayStateLocked(); |
| onVrModeChangedLocked(); |
| } |
| } |
| } |
| |
| private void updateOverlayStateLocked() { |
| final long identity = Binder.clearCallingIdentity(); |
| try { |
| AppOpsManager appOpsManager = getContext().getSystemService(AppOpsManager.class); |
| if (appOpsManager != null) { |
| appOpsManager.setUserRestriction(AppOpsManager.OP_SYSTEM_ALERT_WINDOW, |
| mVrModeEnabled, mOverlayToken); |
| } |
| } finally { |
| Binder.restoreCallingIdentity(identity); |
| } |
| } |
| |
| private boolean getVrMode() { |
| synchronized (mLock) { |
| return mVrModeEnabled; |
| } |
| } |
| |
| /** |
| * Notify system services of VR mode change. |
| */ |
| private void onVrModeChangedLocked() { |
| for (VrStateListener l : mListeners) { |
| l.onVrStateChanged(mVrModeEnabled); |
| } |
| } |
| } |