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/*
* Copyright (C) 2019 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.policy;
import android.hardware.SensorPrivacyManager;
import androidx.annotation.NonNull;
import com.android.systemui.dagger.SysUISingleton;
import java.util.ArrayList;
import java.util.List;
/**
* Controls sensor privacy state and notification.
*/
@SysUISingleton
public class SensorPrivacyControllerImpl implements
SensorPrivacyController,
SensorPrivacyManager.OnAllSensorPrivacyChangedListener {
private SensorPrivacyManager mSensorPrivacyManager;
private final List<OnSensorPrivacyChangedListener> mListeners = new ArrayList<>(1);
private Object mLock = new Object();
private boolean mSensorPrivacyEnabled;
/**
* Public constructor.
*/
public SensorPrivacyControllerImpl(@NonNull SensorPrivacyManager sensorPrivacyManager) {
mSensorPrivacyManager = sensorPrivacyManager;
}
@Override
public void init() {
mSensorPrivacyEnabled = mSensorPrivacyManager.isAllSensorPrivacyEnabled();
mSensorPrivacyManager.addAllSensorPrivacyListener(this);
}
/**
* Returns whether sensor privacy is enabled.
*/
public boolean isSensorPrivacyEnabled() {
synchronized (mLock) {
return mSensorPrivacyEnabled;
}
}
/**
* Adds the provided listener for callbacks when sensor privacy state changes.
*/
public void addCallback(@NonNull OnSensorPrivacyChangedListener listener) {
synchronized (mLock) {
mListeners.add(listener);
notifyListenerLocked(listener);
}
}
/**
* Removes the provided listener from callbacks when sensor privacy state changes.
*/
public void removeCallback(@NonNull OnSensorPrivacyChangedListener listener) {
synchronized (mLock) {
mListeners.remove(listener);
}
}
/**
* Callback invoked by the SensorPrivacyService when sensor privacy state changes.
*/
public void onAllSensorPrivacyChanged(boolean enabled) {
synchronized (mLock) {
mSensorPrivacyEnabled = enabled;
for (OnSensorPrivacyChangedListener listener : mListeners) {
notifyListenerLocked(listener);
}
}
}
private void notifyListenerLocked(OnSensorPrivacyChangedListener listener) {
listener.onSensorPrivacyChanged(mSensorPrivacyEnabled);
}
}
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