1 /* 2 * 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 package com.google.jetpackcamera 17 18 import androidx.lifecycle.ViewModel 19 import androidx.lifecycle.viewModelScope 20 import com.google.jetpackcamera.MainActivityUiState.Loading 21 import com.google.jetpackcamera.MainActivityUiState.Success 22 import com.google.jetpackcamera.settings.SettingsRepository 23 import com.google.jetpackcamera.settings.model.CameraAppSettings 24 import dagger.hilt.android.lifecycle.HiltViewModel 25 import javax.inject.Inject 26 import kotlinx.coroutines.flow.SharingStarted 27 import kotlinx.coroutines.flow.StateFlow 28 import kotlinx.coroutines.flow.map 29 import kotlinx.coroutines.flow.stateIn 30 31 @HiltViewModel 32 class MainActivityViewModel @Inject constructor( 33 settingsRepository: SettingsRepository 34 ) : ViewModel() { <lambda>null35 val uiState: StateFlow<MainActivityUiState> = settingsRepository.defaultCameraAppSettings.map { 36 Success(it) 37 }.stateIn( 38 scope = viewModelScope, 39 initialValue = Loading, 40 started = SharingStarted.WhileSubscribed(5_000) 41 ) 42 } 43 44 sealed interface MainActivityUiState { 45 data object Loading : MainActivityUiState 46 data class Success(val cameraAppSettings: CameraAppSettings) : MainActivityUiState 47 } 48