[37/n] Create TransitionObserver for LifecycleController (0b2cb589) · Commits · e / os / android_frameworks_base

libs/WindowManager/Shell/src/com/android/wm/shell/compatui/letterbox/DelegateLetterboxTransitionObserver.kt

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		/*
		* Copyright 2025 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package com.android.wm.shell.compatui.letterbox

		import android.os.IBinder
		import android.view.SurfaceControl
		import android.window.TransitionInfo
		import com.android.internal.protolog.ProtoLog
		import com.android.window.flags.Flags.appCompatRefactoring
		import com.android.wm.shell.compatui.letterbox.lifecycle.LetterboxLifecycleController
		import com.android.wm.shell.compatui.letterbox.lifecycle.toLetterboxLifecycleEvent
		import com.android.wm.shell.protolog.ShellProtoLogGroup.WM_SHELL_APP_COMPAT
		import com.android.wm.shell.sysui.ShellInit
		import com.android.wm.shell.transition.Transitions

		/**
		* The [TransitionObserver] to handle Letterboxing events in Shell delegating to a
		* [LetterboxLifecycleController].
		*/
		class DelegateLetterboxTransitionObserver(
		shellInit: ShellInit,
		private val transitions: Transitions,
		private val letterboxLifecycleController: LetterboxLifecycleController,
		) : Transitions.TransitionObserver {

		companion object {
		@JvmStatic
		private val TAG = "DelegateLetterboxTransitionObserver"
		}

		init {
		if (appCompatRefactoring()) {
		logV("Initializing LetterboxTransitionObserver")
		shellInit.addInitCallback({
		transitions.registerObserver(this)
		}, this)
		}
		}

		override fun onTransitionReady(
		transition: IBinder,
		info: TransitionInfo,
		startTransaction: SurfaceControl.Transaction,
		finishTransaction: SurfaceControl.Transaction
		) {
		info.changes.forEach {
		letterboxLifecycleController.onLetterboxLifecycleEvent(
		it.toLetterboxLifecycleEvent(),
		startTransaction,
		finishTransaction
		)
		}
		}

		private fun logV(msg: String) {
		ProtoLog.v(WM_SHELL_APP_COMPAT, "%s: %s", TAG, msg)
		}
		}

libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/compatui/letterbox/DelegateLetterboxTransitionObserverTest.kt

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		/*
		* Copyright 2025 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package com.android.wm.shell.compatui.letterbox

		import android.platform.test.annotations.DisableFlags
		import android.platform.test.annotations.EnableFlags
		import android.testing.AndroidTestingRunner
		import android.view.SurfaceControl
		import androidx.test.filters.SmallTest
		import com.android.window.flags.Flags
		import com.android.wm.shell.ShellTestCase
		import com.android.wm.shell.common.ShellExecutor
		import com.android.wm.shell.compatui.letterbox.lifecycle.LetterboxLifecycleController
		import com.android.wm.shell.compatui.letterbox.lifecycle.LetterboxLifecycleEvent
		import com.android.wm.shell.sysui.ShellInit
		import com.android.wm.shell.transition.Transitions
		import com.android.wm.shell.util.executeTransitionObserverTest
		import org.junit.Test
		import org.junit.runner.RunWith
		import org.mockito.Mockito.times
		import org.mockito.kotlin.any
		import org.mockito.kotlin.mock
		import org.mockito.kotlin.verify
		import java.util.function.Consumer

		/**
		* Tests for [DelegateLetterboxTransitionObserver].
		*
		* Build/Install/Run:
		* atest WMShellUnitTests:DelegateLetterboxTransitionObserverTest
		*/
		@RunWith(AndroidTestingRunner::class)
		@SmallTest
		class DelegateLetterboxTransitionObserverTest : ShellTestCase() {

		@Test
		@DisableFlags(Flags.FLAG_APP_COMPAT_REFACTORING)
		fun `when initialized and flag disabled the observer is not registered`() {
		runTestScenario { r ->
		executeTransitionObserverTest(observerFactory = r.observerFactory) {
		r.invokeShellInit()
		r.checkObservableIsRegistered(expected = false)
		}
		}
		}

		@Test
		@EnableFlags(Flags.FLAG_APP_COMPAT_REFACTORING)
		fun `when initialized and flag enabled the observer is registered`() {
		runTestScenario { r ->
		executeTransitionObserverTest(observerFactory = r.observerFactory) {
		r.invokeShellInit()
		r.checkObservableIsRegistered(expected = true)
		}
		}
		}

		@Test
		fun `LetterboxLifecycleController not used with no changes`() {
		runTestScenario { r ->
		executeTransitionObserverTest(observerFactory = r.observerFactory) {
		r.invokeShellInit()

		inputBuilder {
		buildTransitionInfo()
		}

		validateOutput {
		r.checkLifecycleControllerInvoked(times = 0)
		}
		}
		}
		}

		@Test
		fun `LetterboxLifecycleController used with a single change`() {
		runTestScenario { r ->
		executeTransitionObserverTest(observerFactory = r.observerFactory) {
		r.invokeShellInit()

		inputBuilder {
		buildTransitionInfo()
		addChange(createChange())
		}

		validateOutput {
		r.checkLifecycleControllerInvoked(times = 1)
		}
		}
		}
		}

		@Test
		fun `LetterboxLifecycleController used for each change`() {
		runTestScenario { r ->
		executeTransitionObserverTest(observerFactory = r.observerFactory) {
		r.invokeShellInit()

		inputBuilder {
		buildTransitionInfo()
		addChange(createChange())
		addChange(createChange())
		addChange(createChange())
		}

		validateOutput {
		r.checkLifecycleControllerInvoked(times = 3)
		}
		}
		}
		}

		/**
		* Runs a test scenario providing a Robot.
		*/
		fun runTestScenario(consumer: Consumer<LetterboxTransitionObserverRobotTest>) {
		val robot = LetterboxTransitionObserverRobotTest()
		consumer.accept(robot)
		}

		class LetterboxTransitionObserverRobotTest {

		private val executor: ShellExecutor
		private val shellInit: ShellInit
		private val transitions: Transitions
		private val letterboxObserver: DelegateLetterboxTransitionObserver
		private val letterboxLifecycleController: LetterboxLifecycleController

		val observerFactory: () -> DelegateLetterboxTransitionObserver

		init {
		executor = mock<ShellExecutor>()
		shellInit = ShellInit(executor)
		transitions = mock<Transitions>()
		letterboxLifecycleController = mock<LetterboxLifecycleController>()
		letterboxObserver =
		DelegateLetterboxTransitionObserver(
		shellInit,
		transitions,
		letterboxLifecycleController
		)
		observerFactory = { letterboxObserver }
		}

		fun invokeShellInit() = shellInit.init()

		fun observer() = letterboxObserver

		fun checkObservableIsRegistered(expected: Boolean) {
		verify(transitions, expected.asMode()).registerObserver(observer())
		}

		fun checkLifecycleControllerInvoked(
		times: Int = 1,
		) = verify(
		letterboxLifecycleController,
		times(times)
		).onLetterboxLifecycleEvent(
		any<LetterboxLifecycleEvent>(),
		any<SurfaceControl.Transaction>(),
		any<SurfaceControl.Transaction>()
		)
		}
		}

libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/compatui/letterbox/MigrationLetterboxTransitionObserverTest.kt

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		/*
		* Copyright 2025 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package com.android.wm.shell.compatui.letterbox

		import android.graphics.Point
		import android.graphics.Rect
		import android.platform.test.annotations.DisableFlags
		import android.platform.test.annotations.EnableFlags
		import android.testing.AndroidTestingRunner
		import android.view.SurfaceControl
		import android.view.WindowManager.TRANSIT_CLOSE
		import android.window.WindowContainerToken
		import androidx.test.filters.SmallTest
		import com.android.dx.mockito.inline.extended.ExtendedMockito.spyOn
		import com.android.window.flags.Flags
		import com.android.wm.shell.ShellTestCase
		import com.android.wm.shell.common.ShellExecutor
		import com.android.wm.shell.common.transition.TransitionStateHolder
		import com.android.wm.shell.compatui.letterbox.lifecycle.LetterboxLifecycleController
		import com.android.wm.shell.compatui.letterbox.lifecycle.LetterboxLifecycleControllerImpl
		import com.android.wm.shell.recents.RecentsTransitionHandler
		import com.android.wm.shell.sysui.ShellInit
		import com.android.wm.shell.transition.Transitions
		import com.android.wm.shell.util.TransitionObserverInputBuilder
		import com.android.wm.shell.util.executeTransitionObserverTest
		import org.junit.Test
		import org.junit.runner.RunWith
		import org.mockito.kotlin.any
		import org.mockito.kotlin.doReturn
		import org.mockito.kotlin.eq
		import org.mockito.kotlin.mock
		import org.mockito.kotlin.verify
		import java.util.function.Consumer

		/**
		* Tests for [LetterboxTransitionObserver] using [LetterboxLifecycleControllerImpl].
		*
		* Build/Install/Run:
		* atest WMShellUnitTests:MigrationLetterboxTransitionObserverTest
		*/
		@RunWith(AndroidTestingRunner::class)
		@SmallTest
		class MigrationLetterboxTransitionObserverTest : ShellTestCase() {

		@Test
		@DisableFlags(Flags.FLAG_APP_COMPAT_REFACTORING)
		fun `when initialized and flag disabled the observer is not registered`() {
		runTestScenario { r ->
		executeTransitionObserverTest(observerFactory = r.observerFactory) {
		r.invokeShellInit()
		r.checkObservableIsRegistered(expected = false)
		}
		}
		}

		@Test
		@EnableFlags(Flags.FLAG_APP_COMPAT_REFACTORING)
		fun `when initialized and flag enabled the observer is registered`() {
		runTestScenario { r ->
		executeTransitionObserverTest(observerFactory = r.observerFactory) {
		r.invokeShellInit()
		r.checkObservableIsRegistered(expected = true)
		}
		}
		}

		@Test
		fun `LetterboxController not used without TaskInfos in Change`() {
		runTestScenario { r ->
		executeTransitionObserverTest(observerFactory = r.observerFactory) {
		r.invokeShellInit()

		inputBuilder {
		buildTransitionInfo()
		addChange(createChange())
		addChange(createChange())
		addChange(createChange())
		}

		validateOutput {
		r.creationEventDetected(expected = false)
		r.configureStrategyInvoked(expected = false)
		r.visibilityEventDetected(expected = false)
		r.destroyEventDetected(expected = false)
		r.updateSurfaceBoundsEventDetected(expected = false)
		}
		}
		}
		}

		@Test
		fun `When a topActivity is letterboxed surfaces creation is requested`() {
		runTestScenario { r ->
		executeTransitionObserverTest(observerFactory = r.observerFactory) {
		r.invokeShellInit()

		inputBuilder {
		buildTransitionInfo()
		r.createTopActivityChange(
		inputBuilder = this,
		isLetterboxed = true,
		letterboxBounds = Rect(500, 0, 1500, 1000),
		taskPosition = Point(20, 30),
		taskWidth = 200,
		taskHeight = 300
		)
		}

		validateOutput {
		r.creationEventDetected(expected = true)
		r.configureStrategyInvoked(expected = true)
		r.visibilityEventDetected(expected = false)
		r.destroyEventDetected(expected = false)
		r.updateSurfaceBoundsEventDetected(
		expected = true,
		taskBounds = Rect(20, 30, 200, 300),
		activityBounds = Rect(500, 0, 1500, 1000)
		)
		}
		}
		}
		}

		@Test
		fun `When a topActivity is not letterboxed visibility is updated`() {
		runTestScenario { r ->
		executeTransitionObserverTest(observerFactory = r.observerFactory) {
		r.invokeShellInit()

		inputBuilder {
		buildTransitionInfo()
		r.createTopActivityChange(inputBuilder = this, isLetterboxed = false)
		}

		validateOutput {
		r.creationEventDetected(expected = false)
		r.visibilityEventDetected(expected = true, visible = false)
		r.destroyEventDetected(expected = false)
		r.updateSurfaceBoundsEventDetected(expected = false)
		}
		}
		}
		}

		@Test
		fun `When closing change with no recents running letterbox surfaces are destroyed`() {
		runTestScenario { r ->
		executeTransitionObserverTest(observerFactory = r.observerFactory) {
		r.invokeShellInit()

		inputBuilder {
		buildTransitionInfo()
		r.configureRecentsState(running = false)
		r.createClosingChange(inputBuilder = this)
		}

		validateOutput {
		r.destroyEventDetected(expected = true)
		}
		}
		}
		}

		@Test
		fun `When closing change and recents are running letterbox surfaces are not destroyed`() {
		runTestScenario { r ->
		executeTransitionObserverTest(observerFactory = r.observerFactory) {
		r.invokeShellInit()

		inputBuilder {
		buildTransitionInfo()
		r.createClosingChange(inputBuilder = this)
		r.configureRecentsState(running = true)
		}

		validateOutput {
		r.destroyEventDetected(expected = false)
		}
		}
		}
		}

		/**
		* Runs a test scenario providing a Robot.
		*/
		fun runTestScenario(consumer: Consumer<LetterboxTransitionObserverRobotTest>) {
		val robot = LetterboxTransitionObserverRobotTest()
		consumer.accept(robot)
		}

		class LetterboxTransitionObserverRobotTest {

		companion object {
		@JvmStatic
		private val DISPLAY_ID = 1

		@JvmStatic
		private val TASK_ID = 20
		}

		private val executor: ShellExecutor
		private val shellInit: ShellInit
		private val transitions: Transitions
		private val letterboxController: LetterboxController
		private val letterboxObserver: DelegateLetterboxTransitionObserver
		private val transitionStateHolder: TransitionStateHolder
		private val letterboxStrategy: LetterboxControllerStrategy
		private val letterboxLifecycleContoller: LetterboxLifecycleController

		val observerFactory: () -> DelegateLetterboxTransitionObserver

		init {
		executor = mock<ShellExecutor>()
		shellInit = ShellInit(executor)
		transitions = mock<Transitions>()
		letterboxController = mock<LetterboxController>()
		letterboxStrategy = mock<LetterboxControllerStrategy>()
		transitionStateHolder =
		TransitionStateHolder(shellInit, mock<RecentsTransitionHandler>())
		spyOn(transitionStateHolder)
		letterboxLifecycleContoller = LetterboxLifecycleControllerImpl(
		letterboxController,
		transitionStateHolder,
		letterboxStrategy
		)
		letterboxObserver =
		DelegateLetterboxTransitionObserver(
		shellInit,
		transitions,
		letterboxLifecycleContoller
		)
		observerFactory = { letterboxObserver }
		}

		fun invokeShellInit() = shellInit.init()

		fun observer() = letterboxObserver

		fun checkObservableIsRegistered(expected: Boolean) {
		verify(transitions, expected.asMode()).registerObserver(observer())
		}

		fun configureRecentsState(running: Boolean) {
		doReturn(running).`when`(transitionStateHolder).isRecentsTransitionRunning()
		}

		fun creationEventDetected(
		expected: Boolean,
		displayId: Int = DISPLAY_ID,
		taskId: Int = TASK_ID
		) = verify(
		letterboxController,
		expected.asMode()
		).createLetterboxSurface(
		eq(LetterboxKey(displayId, taskId)),
		any<SurfaceControl.Transaction>(),
		any<SurfaceControl>(),
		any<WindowContainerToken>()
		)

		// Visible param is used only if expected is true.
		fun visibilityEventDetected(
		expected: Boolean,
		visible: Boolean = true,
		displayId: Int = DISPLAY_ID,
		taskId: Int = TASK_ID
		) = verify(letterboxController, expected.asMode()).updateLetterboxSurfaceVisibility(
		eq(LetterboxKey(displayId, taskId)),
		any<SurfaceControl.Transaction>(),
		if (expected) eq(visible) else any()
		)

		fun destroyEventDetected(
		expected: Boolean,
		displayId: Int = DISPLAY_ID,
		taskId: Int = TASK_ID
		) = verify(
		letterboxController,
		expected.asMode()
		).destroyLetterboxSurface(
		eq(LetterboxKey(displayId, taskId)),
		any<SurfaceControl.Transaction>()
		)

		fun updateSurfaceBoundsEventDetected(
		expected: Boolean,
		displayId: Int = DISPLAY_ID,
		taskId: Int = TASK_ID,
		taskBounds: Rect = Rect(),
		activityBounds: Rect = Rect()
		) = verify(
		letterboxController,
		expected.asMode()
		).updateLetterboxSurfaceBounds(
		eq(LetterboxKey(displayId, taskId)),
		any<SurfaceControl.Transaction>(),
		eq(taskBounds),
		eq(activityBounds)
		)

		fun configureStrategyInvoked(expected: Boolean) =
		verify(letterboxStrategy, expected.asMode()).configureLetterboxMode()

		fun createTopActivityChange(
		inputBuilder: TransitionObserverInputBuilder,
		isLetterboxed: Boolean = true,
		letterboxBounds: Rect? = null,
		displayId: Int = DISPLAY_ID,
		taskId: Int = TASK_ID,
		taskPosition: Point = Point(),
		taskWidth: Int = 0,
		taskHeight: Int = 0
		) {
		inputBuilder.addChange(
		inputBuilder.createChange(
		changeTaskInfo = inputBuilder.createTaskInfo().apply {
		appCompatTaskInfo.isTopActivityLetterboxed = isLetterboxed
		appCompatTaskInfo.topActivityLetterboxBounds = letterboxBounds
		this.taskId = taskId
		this.displayId = displayId
		}
		).apply {
		endRelOffset.x = taskPosition.x
		endRelOffset.y = taskPosition.y
		endAbsBounds.set(Rect(0, 0, taskWidth, taskHeight))
		})
		}

		fun createClosingChange(
		inputBuilder: TransitionObserverInputBuilder,
		displayId: Int = DISPLAY_ID,
		taskId: Int = TASK_ID
		) {
		inputBuilder.addChange(changeTaskInfo = inputBuilder.createTaskInfo().apply {
		this.taskId = taskId
		this.displayId = displayId
		}, changeMode = TRANSIT_CLOSE)
		}
		}
		}