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/*
* Copyright (C) 2021 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 androidx.window.common;
import static android.hardware.devicestate.DeviceStateManager.INVALID_DEVICE_STATE;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.content.Context;
import android.hardware.devicestate.DeviceStateManager;
import android.hardware.devicestate.DeviceStateManager.DeviceStateCallback;
import android.util.Log;
import android.util.SparseIntArray;
import androidx.window.util.BaseDataProducer;
import com.android.internal.R;
import java.util.Optional;
/**
* An implementation of {@link androidx.window.util.DataProducer} that returns the device's posture
* by mapping the state returned from {@link DeviceStateManager} to values provided in the resources
* config at {@link R.array#config_device_state_postures}.
*/
public final class DeviceStateManagerPostureProducer extends BaseDataProducer<Integer> {
private static final String TAG = "ConfigDevicePostureProducer";
private static final boolean DEBUG = false;
private final SparseIntArray mDeviceStateToPostureMap = new SparseIntArray();
private int mCurrentDeviceState = INVALID_DEVICE_STATE;
private final DeviceStateCallback mDeviceStateCallback = (state) -> {
mCurrentDeviceState = state;
notifyDataChanged();
};
public DeviceStateManagerPostureProducer(@NonNull Context context) {
String[] deviceStatePosturePairs = context.getResources()
.getStringArray(R.array.config_device_state_postures);
for (String deviceStatePosturePair : deviceStatePosturePairs) {
String[] deviceStatePostureMapping = deviceStatePosturePair.split(":");
if (deviceStatePostureMapping.length != 2) {
if (DEBUG) {
Log.e(TAG, "Malformed device state posture pair: " + deviceStatePosturePair);
}
continue;
}
int deviceState;
int posture;
try {
deviceState = Integer.parseInt(deviceStatePostureMapping[0]);
posture = Integer.parseInt(deviceStatePostureMapping[1]);
} catch (NumberFormatException e) {
if (DEBUG) {
Log.e(TAG, "Failed to parse device state or posture: " + deviceStatePosturePair,
e);
}
continue;
}
mDeviceStateToPostureMap.put(deviceState, posture);
}
if (mDeviceStateToPostureMap.size() > 0) {
context.getSystemService(DeviceStateManager.class)
.registerCallback(context.getMainExecutor(), mDeviceStateCallback);
}
}
@Override
@Nullable
public Optional<Integer> getData() {
final int posture = mDeviceStateToPostureMap.get(mCurrentDeviceState, -1);
return posture != -1 ? Optional.of(posture) : Optional.empty();
}
}
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