| /* |
| * 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 static androidx.window.common.CommonFoldingFeature.COMMON_STATE_UNKNOWN; |
| import static androidx.window.common.CommonFoldingFeature.parseListFromString; |
| |
| 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.text.TextUtils; |
| import android.util.Log; |
| import android.util.SparseIntArray; |
| |
| import androidx.window.util.BaseDataProducer; |
| |
| import com.android.internal.R; |
| |
| import java.util.List; |
| 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 DeviceStateManagerFoldingFeatureProducer extends |
| BaseDataProducer<List<CommonFoldingFeature>> { |
| private static final String TAG = |
| DeviceStateManagerFoldingFeatureProducer.class.getSimpleName(); |
| private static final boolean DEBUG = false; |
| |
| private final Context mContext; |
| private final SparseIntArray mDeviceStateToPostureMap = new SparseIntArray(); |
| |
| private int mCurrentDeviceState = INVALID_DEVICE_STATE; |
| |
| private final DeviceStateCallback mDeviceStateCallback = (state) -> { |
| mCurrentDeviceState = state; |
| notifyDataChanged(); |
| }; |
| |
| public DeviceStateManagerFoldingFeatureProducer(@NonNull Context context) { |
| mContext = 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<List<CommonFoldingFeature>> getData() { |
| final int globalHingeState = globalHingeState(); |
| String displayFeaturesString = mContext.getResources().getString( |
| R.string.config_display_features); |
| if (TextUtils.isEmpty(displayFeaturesString)) { |
| return Optional.empty(); |
| } |
| return Optional.of(parseListFromString(displayFeaturesString, globalHingeState)); |
| } |
| |
| private int globalHingeState() { |
| return mDeviceStateToPostureMap.get(mCurrentDeviceState, COMMON_STATE_UNKNOWN); |
| } |
| } |