1 /* 2 * Copyright (C) 2024 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 package com.android.systemui.statusbar.notification.row.ui.viewbinder 18 19 import android.widget.ViewFlipper 20 import androidx.lifecycle.lifecycleScope 21 import com.android.systemui.lifecycle.repeatWhenAttached 22 import com.android.systemui.statusbar.notification.row.ui.viewmodel.NotificationViewFlipperViewModel 23 import kotlinx.coroutines.DisposableHandle 24 import kotlinx.coroutines.coroutineScope 25 import kotlinx.coroutines.launch 26 27 /** Binds a [NotificationViewFlipper] to its [view model][NotificationViewFlipperViewModel]. */ 28 object NotificationViewFlipperBinder { bindWhileAttachednull29 fun bindWhileAttached( 30 viewFlipper: ViewFlipper, 31 viewModel: NotificationViewFlipperViewModel, 32 ): DisposableHandle { 33 if (!viewFlipper.isAutoStart) { 34 // If the ViewFlipper is not set to AutoStart, the pause binding is meaningless 35 return DisposableHandle {} 36 } 37 return viewFlipper.repeatWhenAttached { 38 lifecycleScope.launch { bind(viewFlipper, viewModel) } 39 } 40 } 41 bindnull42 suspend fun bind( 43 viewFlipper: ViewFlipper, 44 viewModel: NotificationViewFlipperViewModel, 45 ) = coroutineScope { launch { viewModel.isPaused.collect { viewFlipper.setPaused(it) } } } 46 ViewFlippernull47 private fun ViewFlipper.setPaused(paused: Boolean) { 48 if (paused) { 49 stopFlipping() 50 } else if (isAutoStart) { 51 startFlipping() 52 } 53 } 54 } 55