1 /* 2 * Copyright 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.wm.shell.common.transition 18 19 import com.android.wm.shell.dagger.WMSingleton 20 import com.android.wm.shell.recents.RecentsTransitionHandler 21 import com.android.wm.shell.recents.RecentsTransitionStateListener 22 import com.android.wm.shell.recents.RecentsTransitionStateListener.RecentsTransitionState 23 import com.android.wm.shell.recents.RecentsTransitionStateListener.isRunning 24 import com.android.wm.shell.sysui.ShellInit 25 import javax.inject.Inject 26 27 /** 28 * Holder for the state of the transitions. 29 */ 30 @WMSingleton 31 class TransitionStateHolder @Inject constructor( 32 shellInit: ShellInit, 33 private val recentsTransitionHandler: RecentsTransitionHandler 34 ) { 35 36 @Volatile 37 @RecentsTransitionState 38 private var recentsTransitionState: Int = 39 RecentsTransitionStateListener.TRANSITION_STATE_NOT_RUNNING 40 41 init { <lambda>null42 shellInit.addInitCallback({ onInit() }, this) 43 } 44 isRecentsTransitionRunningnull45 fun isRecentsTransitionRunning(): Boolean = isRunning(recentsTransitionState) 46 47 private fun onInit() { 48 recentsTransitionHandler.addTransitionStateListener( 49 object : RecentsTransitionStateListener { 50 override fun onTransitionStateChanged(@RecentsTransitionState state: Int) { 51 recentsTransitionState = state 52 } 53 } 54 ) 55 } 56 } 57