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.flow.Flow 25 import kotlinx.coroutines.flow.flatMapLatest 26 import kotlinx.coroutines.flow.flowOf 27 28 /** Allows listening to changes to keyboard backlight level */ 29 @SysUISingleton 30 class KeyboardBacklightInteractor 31 @Inject 32 constructor( 33 private val keyboardRepository: KeyboardRepository, 34 ) { 35 36 /** Emits current backlight level as [BacklightModel] or null if keyboard is not connected */ 37 val backlight: Flow<BacklightModel?> = 38 keyboardRepository.keyboardConnected.flatMapLatest { connected -> 39 if (connected) keyboardRepository.backlight else flowOf(null) 40 } 41 } 42