1 /* <lambda>null2 * Copyright (C) 2023 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 * 16 */ 17 18 package com.android.systemui.keyboard.backlight.domain.interactor 19 20 import com.android.systemui.dagger.SysUISingleton 21 import com.android.systemui.keyboard.data.repository.KeyboardRepository 22 import com.android.systemui.keyboard.shared.model.BacklightModel 23 import javax.inject.Inject 24 import kotlinx.coroutines.ExperimentalCoroutinesApi 25 import kotlinx.coroutines.flow.Flow 26 import kotlinx.coroutines.flow.flatMapLatest 27 import kotlinx.coroutines.flow.flowOf 28 29 /** Allows listening to changes to keyboard backlight level */ 30 @SysUISingleton 31 class KeyboardBacklightInteractor 32 @Inject 33 constructor( 34 private val keyboardRepository: KeyboardRepository, 35 ) { 36 37 /** Emits current backlight level as [BacklightModel] or null if keyboard is not connected */ 38 @ExperimentalCoroutinesApi 39 val backlight: Flow<BacklightModel?> = 40 keyboardRepository.isAnyKeyboardConnected.flatMapLatest { connected -> 41 if (connected) keyboardRepository.backlight else flowOf(null) 42 } 43 } 44