Merge changes from topic "caitlinshk-csi-setlockscreenuser" into udc-qpr-dev am: 11f114e48f am: 86a7d4675c

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23984932

Change-Id: Id21ab58584264c51626a8536a05eddd98a5ba80a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

12 files changed, 211 insertions, 94 deletions

diff --git a/packages/SystemUI/src/com/android/systemui/shade/NotificationShadeWindowControllerImpl.java b/packages/SystemUI/src/com/android/systemui/shade/NotificationShadeWindowControllerImpl.java
index bb2be66cffda..b328c5564590 100644
--- a/packages/SystemUI/src/com/android/systemui/shade/NotificationShadeWindowControllerImpl.java
+++ b/packages/SystemUI/src/com/android/systemui/shade/NotificationShadeWindowControllerImpl.java
@@ -543,7 +543,6 @@ public class NotificationShadeWindowControllerImpl implements NotificationShadeW
                 state.forceUserActivity,
                 state.launchingActivityFromNotification,
                 state.mediaBackdropShowing,
-                state.wallpaperSupportsAmbientMode,
                 state.windowNotTouchable,
                 state.componentsForcingTopUi,
                 state.forceOpenTokens,
@@ -734,12 +733,6 @@ public class NotificationShadeWindowControllerImpl implements NotificationShadeW
         apply(mCurrentState);
     }
 
-    @Override
-    public void setWallpaperSupportsAmbientMode(boolean supportsAmbientMode) {
-        mCurrentState.wallpaperSupportsAmbientMode = supportsAmbientMode;
-        apply(mCurrentState);
-    }
-
     /**
      * @param state The {@link StatusBarStateController} of the status bar.
      */
diff --git a/packages/SystemUI/src/com/android/systemui/shade/NotificationShadeWindowState.kt b/packages/SystemUI/src/com/android/systemui/shade/NotificationShadeWindowState.kt
index 7812f07fc59c..d25294343d2f 100644
--- a/packages/SystemUI/src/com/android/systemui/shade/NotificationShadeWindowState.kt
+++ b/packages/SystemUI/src/com/android/systemui/shade/NotificationShadeWindowState.kt
@@ -46,7 +46,6 @@ class NotificationShadeWindowState(
     @JvmField var forceUserActivity: Boolean = false,
     @JvmField var launchingActivityFromNotification: Boolean = false,
     @JvmField var mediaBackdropShowing: Boolean = false,
-    @JvmField var wallpaperSupportsAmbientMode: Boolean = false,
     @JvmField var windowNotTouchable: Boolean = false,
     @JvmField var componentsForcingTopUi: MutableSet<String> = mutableSetOf(),
     @JvmField var forceOpenTokens: MutableSet<Any> = mutableSetOf(),
@@ -84,7 +83,6 @@ class NotificationShadeWindowState(
             forceUserActivity.toString(),
             launchingActivityFromNotification.toString(),
             mediaBackdropShowing.toString(),
-            wallpaperSupportsAmbientMode.toString(),
             windowNotTouchable.toString(),
             componentsForcingTopUi.toString(),
             forceOpenTokens.toString(),
@@ -124,7 +122,6 @@ class NotificationShadeWindowState(
             forceUserActivity: Boolean,
             launchingActivity: Boolean,
             backdropShowing: Boolean,
-            wallpaperSupportsAmbientMode: Boolean,
             notTouchable: Boolean,
             componentsForcingTopUi: MutableSet<String>,
             forceOpenTokens: MutableSet<Any>,
@@ -153,7 +150,6 @@ class NotificationShadeWindowState(
                 this.forceUserActivity = forceUserActivity
                 this.launchingActivityFromNotification = launchingActivity
                 this.mediaBackdropShowing = backdropShowing
-                this.wallpaperSupportsAmbientMode = wallpaperSupportsAmbientMode
                 this.windowNotTouchable = notTouchable
                 this.componentsForcingTopUi.clear()
                 this.componentsForcingTopUi.addAll(componentsForcingTopUi)
@@ -200,7 +196,6 @@ class NotificationShadeWindowState(
                 "forceUserActivity",
                 "launchingActivity",
                 "backdropShowing",
-                "wallpaperSupportsAmbientMode",
                 "notTouchable",
                 "componentsForcingTopUi",
                 "forceOpenTokens",
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/NotificationShadeWindowController.java b/packages/SystemUI/src/com/android/systemui/statusbar/NotificationShadeWindowController.java
index 47a4641bcdd9..5ac542b3530f 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/NotificationShadeWindowController.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/NotificationShadeWindowController.java
@@ -112,9 +112,6 @@ public interface NotificationShadeWindowController extends RemoteInputController
     /** Sets the state of whether heads up is showing or not. */
     default void setHeadsUpShowing(boolean showing) {}
 
-    /** Sets whether the wallpaper supports ambient mode or not. */
-    default void setWallpaperSupportsAmbientMode(boolean supportsAmbientMode) {}
-
     /** Gets whether the wallpaper is showing or not. */
     default boolean isShowingWallpaper() {
         return false;
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/CentralSurfaces.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/CentralSurfaces.java
index 2b9c3d33e9b8..acd6e49fe8c1 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/CentralSurfaces.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/CentralSurfaces.java
@@ -259,8 +259,6 @@ public interface CentralSurfaces extends Dumpable, LifecycleOwner {
 
     void readyForKeyguardDone();
 
-    void setLockscreenUser(int newUserId);
-
     void showKeyguard();
 
     boolean hideKeyguard();
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/CentralSurfacesImpl.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/CentralSurfacesImpl.java
index ce1ec16d3140..8361d6ba1801 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/CentralSurfacesImpl.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/CentralSurfacesImpl.java
@@ -51,7 +51,6 @@ import android.app.PendingIntent;
 import android.app.StatusBarManager;
 import android.app.TaskInfo;
 import android.app.UiModeManager;
-import android.app.WallpaperInfo;
 import android.app.WallpaperManager;
 import android.app.admin.DevicePolicyManager;
 import android.content.BroadcastReceiver;
@@ -980,16 +979,6 @@ public class CentralSurfacesImpl implements CoreStartable, CentralSurfaces {
 
         createAndAddWindows(result);
 
-        if (mWallpaperSupported) {
-            // Make sure we always have the most current wallpaper info.
-            IntentFilter wallpaperChangedFilter = new IntentFilter(Intent.ACTION_WALLPAPER_CHANGED);
-            mBroadcastDispatcher.registerReceiver(mWallpaperChangedReceiver, wallpaperChangedFilter,
-                    null /* handler */, UserHandle.ALL);
-            mWallpaperChangedReceiver.onReceive(mContext, null);
-        } else if (DEBUG) {
-            Log.v(TAG, "start(): no wallpaper service ");
-        }
-
         // Set up the initial notification state. This needs to happen before CommandQueue.disable()
         setUpPresenter();
 
@@ -2164,18 +2153,6 @@ public class CentralSurfacesImpl implements CoreStartable, CentralSurfaces {
     };
 
     /**
-     * Notify the shade controller that the current user changed
-     *
-     * @param newUserId userId of the new user
-     */
-    @Override
-    public void setLockscreenUser(int newUserId) {
-        if (mWallpaperSupported) {
-            mWallpaperChangedReceiver.onReceive(mContext, null);
-        }
-    }
-
-    /**
      * Reload some of our resources when the configuration changes.
      *
      * We don't reload everything when the configuration changes -- we probably
@@ -3549,32 +3526,6 @@ public class CentralSurfacesImpl implements CoreStartable, CentralSurfaces {
         }
     };
 
-    /**
-     * @deprecated See {@link com.android.systemui.wallpapers.data.repository.WallpaperRepository}
-     * instead.
-     */
-    private final BroadcastReceiver mWallpaperChangedReceiver = new BroadcastReceiver() {
-        @Override
-        public void onReceive(Context context, Intent intent) {
-            if (!mWallpaperSupported) {
-                // Receiver should not have been registered at all...
-                Log.wtf(TAG, "WallpaperManager not supported");
-                return;
-            }
-            WallpaperInfo info = mWallpaperManager.getWallpaperInfoForUser(
-                    mUserTracker.getUserId());
-            mWallpaperController.onWallpaperInfoUpdated(info);
-
-            final boolean deviceSupportsAodWallpaper = mContext.getResources().getBoolean(
-                    com.android.internal.R.bool.config_dozeSupportsAodWallpaper);
-            // If WallpaperInfo is null, it must be ImageWallpaper.
-            final boolean supportsAmbientMode = deviceSupportsAodWallpaper
-                    && (info != null && info.supportsAmbientMode());
-
-            mNotificationShadeWindowController.setWallpaperSupportsAmbientMode(supportsAmbientMode);
-        }
-    };
-
     private final ConfigurationListener mConfigurationListener = new ConfigurationListener() {
         @Override
         public void onConfigChanged(Configuration newConfig) {
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarNotificationPresenter.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarNotificationPresenter.java
index e63fecd33383..a9135ac91e44 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarNotificationPresenter.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarNotificationPresenter.java
@@ -208,7 +208,6 @@ class StatusBarNotificationPresenter implements NotificationPresenter, CommandQu
         // End old BaseStatusBar.userSwitched
         mCommandQueue.animateCollapsePanels();
         mMediaManager.clearCurrentMediaNotification();
-        mCentralSurfaces.setLockscreenUser(newUserId);
         updateMediaMetaData(true, false);
     }
 
diff --git a/packages/SystemUI/src/com/android/systemui/util/WallpaperController.kt b/packages/SystemUI/src/com/android/systemui/util/WallpaperController.kt
index db2aca873d0c..65a02184f96d 100644
--- a/packages/SystemUI/src/com/android/systemui/util/WallpaperController.kt
+++ b/packages/SystemUI/src/com/android/systemui/util/WallpaperController.kt
@@ -16,32 +16,34 @@
 
 package com.android.systemui.util
 
-import android.app.WallpaperInfo
 import android.app.WallpaperManager
 import android.util.Log
 import android.view.View
 import com.android.systemui.dagger.SysUISingleton
+import com.android.systemui.wallpapers.data.repository.WallpaperRepository
 import javax.inject.Inject
 import kotlin.math.max
 
 private const val TAG = "WallpaperController"
 
+/**
+ * Controller for wallpaper-related logic.
+ *
+ * Note: New logic should be added to [WallpaperRepository], not this class.
+ */
 @SysUISingleton
-class WallpaperController @Inject constructor(private val wallpaperManager: WallpaperManager) {
+class WallpaperController @Inject constructor(
+    private val wallpaperManager: WallpaperManager,
+    private val wallpaperRepository: WallpaperRepository,
+) {
 
     var rootView: View? = null
 
     private var notificationShadeZoomOut: Float = 0f
     private var unfoldTransitionZoomOut: Float = 0f
 
-    private var wallpaperInfo: WallpaperInfo? = null
-
-    fun onWallpaperInfoUpdated(wallpaperInfo: WallpaperInfo?) {
-        this.wallpaperInfo = wallpaperInfo
-    }
-
     private val shouldUseDefaultUnfoldTransition: Boolean
-        get() = wallpaperInfo?.shouldUseDefaultUnfoldTransition()
+        get() = wallpaperRepository.wallpaperInfo.value?.shouldUseDefaultUnfoldTransition()
             ?: true
 
     fun setNotificationShadeZoom(zoomOut: Float) {
diff --git a/packages/SystemUI/src/com/android/systemui/wallpapers/data/repository/NoopWallpaperRepository.kt b/packages/SystemUI/src/com/android/systemui/wallpapers/data/repository/NoopWallpaperRepository.kt
index a64058968581..b45b8cd15bf5 100644
--- a/packages/SystemUI/src/com/android/systemui/wallpapers/data/repository/NoopWallpaperRepository.kt
+++ b/packages/SystemUI/src/com/android/systemui/wallpapers/data/repository/NoopWallpaperRepository.kt
@@ -16,9 +16,11 @@
 
 package com.android.systemui.wallpapers.data.repository
 
+import android.app.WallpaperInfo
 import com.android.systemui.dagger.SysUISingleton
 import javax.inject.Inject
 import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.asStateFlow
 
 /**
@@ -29,5 +31,6 @@ import kotlinx.coroutines.flow.asStateFlow
  */
 @SysUISingleton
 class NoopWallpaperRepository @Inject constructor() : WallpaperRepository {
+    override val wallpaperInfo: StateFlow<WallpaperInfo?> = MutableStateFlow(null).asStateFlow()
     override val wallpaperSupportsAmbientMode = MutableStateFlow(false).asStateFlow()
 }
diff --git a/packages/SystemUI/src/com/android/systemui/wallpapers/data/repository/WallpaperRepository.kt b/packages/SystemUI/src/com/android/systemui/wallpapers/data/repository/WallpaperRepository.kt
index 48895ffcacb9..b8f95832b852 100644
--- a/packages/SystemUI/src/com/android/systemui/wallpapers/data/repository/WallpaperRepository.kt
+++ b/packages/SystemUI/src/com/android/systemui/wallpapers/data/repository/WallpaperRepository.kt
@@ -16,6 +16,7 @@
 
 package com.android.systemui.wallpapers.data.repository
 
+import android.app.WallpaperInfo
 import android.app.WallpaperManager
 import android.content.Context
 import android.content.Intent
@@ -36,11 +37,15 @@ import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.flow.combine
 import kotlinx.coroutines.flow.filter
+import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.onStart
 import kotlinx.coroutines.flow.stateIn
 
 /** A repository storing information about the current wallpaper. */
 interface WallpaperRepository {
+    /** Emits the current user's current wallpaper. */
+    val wallpaperInfo: StateFlow<WallpaperInfo?>
+
     /** Emits true if the current user's current wallpaper supports ambient mode. */
     val wallpaperSupportsAmbientMode: StateFlow<Boolean>
 }
@@ -78,28 +83,35 @@ constructor(
             // Only update the wallpaper status once the user selection has finished.
             .filter { it.selectionStatus == SelectionStatus.SELECTION_COMPLETE }
 
-    override val wallpaperSupportsAmbientMode: StateFlow<Boolean> =
+    override val wallpaperInfo: StateFlow<WallpaperInfo?> =
         if (!wallpaperManager.isWallpaperSupported || !deviceSupportsAodWallpaper) {
-            MutableStateFlow(false).asStateFlow()
+            MutableStateFlow(null).asStateFlow()
         } else {
             combine(wallpaperChanged, selectedUser) { _, selectedUser ->
-                    doesWallpaperSupportAmbientMode(selectedUser)
+                    getWallpaper(selectedUser)
                 }
                 .stateIn(
                     scope,
                     // Always be listening for wallpaper changes.
                     SharingStarted.Eagerly,
-                    initialValue =
-                        doesWallpaperSupportAmbientMode(userRepository.selectedUser.value),
+                    initialValue = getWallpaper(userRepository.selectedUser.value),
                 )
         }
 
-    private fun doesWallpaperSupportAmbientMode(selectedUser: SelectedUserModel): Boolean {
-        return wallpaperManager
-            .getWallpaperInfoForUser(
-                selectedUser.userInfo.id,
+    override val wallpaperSupportsAmbientMode: StateFlow<Boolean> =
+        wallpaperInfo
+            .map {
+                // If WallpaperInfo is null, it's ImageWallpaper which never supports ambient mode.
+                it?.supportsAmbientMode() == true
+            }
+            .stateIn(
+                scope,
+                // Always be listening for wallpaper changes.
+                SharingStarted.Eagerly,
+                initialValue = wallpaperInfo.value?.supportsAmbientMode() == true,
             )
-            // If WallpaperInfo is null, it's ImageWallpaper which never supports ambient mode.
-            ?.supportsAmbientMode() == true
+
+    private fun getWallpaper(selectedUser: SelectedUserModel): WallpaperInfo? {
+        return wallpaperManager.getWallpaperInfoForUser(selectedUser.userInfo.id)
     }
 }
diff --git a/packages/SystemUI/tests/src/com/android/systemui/util/WallpaperControllerTest.kt b/packages/SystemUI/tests/src/com/android/systemui/util/WallpaperControllerTest.kt
index d8e418a7815c..b13cb72dc944 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/util/WallpaperControllerTest.kt
+++ b/packages/SystemUI/tests/src/com/android/systemui/util/WallpaperControllerTest.kt
@@ -26,6 +26,7 @@ import android.view.ViewRootImpl
 import androidx.test.filters.SmallTest
 import com.android.systemui.SysuiTestCase
 import com.android.systemui.util.mockito.eq
+import com.android.systemui.wallpapers.data.repository.FakeWallpaperRepository
 import org.junit.Before
 import org.junit.Rule
 import org.junit.Test
@@ -56,6 +57,7 @@ class WallpaperControllerTest : SysuiTestCase() {
     private lateinit var viewRootImpl: ViewRootImpl
     @Mock
     private lateinit var windowToken: IBinder
+    private val wallpaperRepository = FakeWallpaperRepository()
 
     @JvmField
     @Rule
@@ -69,7 +71,7 @@ class WallpaperControllerTest : SysuiTestCase() {
         `when`(root.windowToken).thenReturn(windowToken)
         `when`(root.isAttachedToWindow).thenReturn(true)
 
-        wallaperController = WallpaperController(wallpaperManager)
+        wallaperController = WallpaperController(wallpaperManager, wallpaperRepository)
 
         wallaperController.rootView = root
     }
@@ -90,9 +92,9 @@ class WallpaperControllerTest : SysuiTestCase() {
 
     @Test
     fun setUnfoldTransitionZoom_defaultUnfoldTransitionIsDisabled_doesNotUpdateWallpaperZoom() {
-        wallaperController.onWallpaperInfoUpdated(createWallpaperInfo(
+        wallpaperRepository.wallpaperInfo.value = createWallpaperInfo(
             useDefaultTransition = false
-        ))
+        )
 
         wallaperController.setUnfoldTransitionZoom(0.5f)
 
diff --git a/packages/SystemUI/tests/src/com/android/systemui/wallpapers/data/repository/FakeWallpaperRepository.kt b/packages/SystemUI/tests/src/com/android/systemui/wallpapers/data/repository/FakeWallpaperRepository.kt
index 6fc36b08250b..fe5024fdc0a3 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/wallpapers/data/repository/FakeWallpaperRepository.kt
+++ b/packages/SystemUI/tests/src/com/android/systemui/wallpapers/data/repository/FakeWallpaperRepository.kt
@@ -16,9 +16,11 @@
 
 package com.android.systemui.wallpapers.data.repository
 
+import android.app.WallpaperInfo
 import kotlinx.coroutines.flow.MutableStateFlow
 
 /** Fake implementation of the wallpaper repository. */
 class FakeWallpaperRepository : WallpaperRepository {
+    override val wallpaperInfo = MutableStateFlow<WallpaperInfo?>(null)
     override val wallpaperSupportsAmbientMode = MutableStateFlow(false)
 }
diff --git a/packages/SystemUI/tests/src/com/android/systemui/wallpapers/data/repository/WallpaperRepositoryImplTest.kt b/packages/SystemUI/tests/src/com/android/systemui/wallpapers/data/repository/WallpaperRepositoryImplTest.kt
index 132b9b4a02e1..f8b096a7579b 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/wallpapers/data/repository/WallpaperRepositoryImplTest.kt
+++ b/packages/SystemUI/tests/src/com/android/systemui/wallpapers/data/repository/WallpaperRepositoryImplTest.kt
@@ -65,6 +65,171 @@ class WallpaperRepositoryImplTest : SysuiTestCase() {
     }
 
     @Test
+    fun wallpaperInfo_nullInfo() =
+        testScope.runTest {
+            val latest by collectLastValue(underTest.wallpaperInfo)
+
+            whenever(wallpaperManager.getWallpaperInfoForUser(any())).thenReturn(null)
+
+            fakeBroadcastDispatcher.sendIntentToMatchingReceiversOnly(
+                context,
+                Intent(Intent.ACTION_WALLPAPER_CHANGED),
+            )
+
+            assertThat(latest).isNull()
+        }
+
+    @Test
+    fun wallpaperInfo_hasInfoFromManager() =
+        testScope.runTest {
+            val latest by collectLastValue(underTest.wallpaperInfo)
+
+            whenever(wallpaperManager.getWallpaperInfoForUser(any())).thenReturn(UNSUPPORTED_WP)
+
+            fakeBroadcastDispatcher.sendIntentToMatchingReceiversOnly(
+                context,
+                Intent(Intent.ACTION_WALLPAPER_CHANGED),
+            )
+
+            assertThat(latest).isEqualTo(UNSUPPORTED_WP)
+        }
+
+    @Test
+    fun wallpaperInfo_initialValueIsFetched() =
+        testScope.runTest {
+            whenever(wallpaperManager.getWallpaperInfoForUser(USER_WITH_SUPPORTED_WP.id))
+                .thenReturn(SUPPORTED_WP)
+            userRepository.setUserInfos(listOf(USER_WITH_SUPPORTED_WP))
+            userRepository.setSelectedUserInfo(USER_WITH_SUPPORTED_WP)
+
+            // WHEN the repo initially starts up (underTest is lazy), then it fetches the current
+            // value for the wallpaper
+            assertThat(underTest.wallpaperInfo.value).isEqualTo(SUPPORTED_WP)
+        }
+
+    @Test
+    fun wallpaperInfo_updatesOnUserChanged() =
+        testScope.runTest {
+            val latest by collectLastValue(underTest.wallpaperInfo)
+
+            val user3 = UserInfo(/* id= */ 3, /* name= */ "user3", /* flags= */ 0)
+            val user3Wp = mock<WallpaperInfo>()
+            whenever(wallpaperManager.getWallpaperInfoForUser(user3.id)).thenReturn(user3Wp)
+
+            val user4 = UserInfo(/* id= */ 4, /* name= */ "user4", /* flags= */ 0)
+            val user4Wp = mock<WallpaperInfo>()
+            whenever(wallpaperManager.getWallpaperInfoForUser(user4.id)).thenReturn(user4Wp)
+
+            userRepository.setUserInfos(listOf(user3, user4))
+
+            // WHEN user3 is selected
+            userRepository.setSelectedUserInfo(user3)
+
+            // THEN user3's wallpaper is used
+            assertThat(latest).isEqualTo(user3Wp)
+
+            // WHEN the user is switched to user4
+            userRepository.setSelectedUserInfo(user4)
+
+            // THEN user4's wallpaper is used
+            assertThat(latest).isEqualTo(user4Wp)
+        }
+
+    @Test
+    fun wallpaperInfo_doesNotUpdateOnUserChanging() =
+        testScope.runTest {
+            val latest by collectLastValue(underTest.wallpaperInfo)
+
+            val user3 = UserInfo(/* id= */ 3, /* name= */ "user3", /* flags= */ 0)
+            val user3Wp = mock<WallpaperInfo>()
+            whenever(wallpaperManager.getWallpaperInfoForUser(user3.id)).thenReturn(user3Wp)
+
+            val user4 = UserInfo(/* id= */ 4, /* name= */ "user4", /* flags= */ 0)
+            val user4Wp = mock<WallpaperInfo>()
+            whenever(wallpaperManager.getWallpaperInfoForUser(user4.id)).thenReturn(user4Wp)
+
+            userRepository.setUserInfos(listOf(user3, user4))
+
+            // WHEN user3 is selected
+            userRepository.setSelectedUserInfo(user3)
+
+            // THEN user3's wallpaper is used
+            assertThat(latest).isEqualTo(user3Wp)
+
+            // WHEN the user has started switching to user4 but hasn't finished yet
+            userRepository.selectedUser.value =
+                SelectedUserModel(user4, SelectionStatus.SELECTION_IN_PROGRESS)
+
+            // THEN the wallpaper still matches user3
+            assertThat(latest).isEqualTo(user3Wp)
+        }
+
+    @Test
+    fun wallpaperInfo_updatesOnIntent() =
+        testScope.runTest {
+            val latest by collectLastValue(underTest.wallpaperInfo)
+
+            val wp1 = mock<WallpaperInfo>()
+            whenever(wallpaperManager.getWallpaperInfoForUser(any())).thenReturn(wp1)
+
+            assertThat(latest).isEqualTo(wp1)
+
+            // WHEN the info is new and a broadcast is sent
+            val wp2 = mock<WallpaperInfo>()
+            whenever(wallpaperManager.getWallpaperInfoForUser(any())).thenReturn(wp2)
+            fakeBroadcastDispatcher.sendIntentToMatchingReceiversOnly(
+                context,
+                Intent(Intent.ACTION_WALLPAPER_CHANGED),
+            )
+
+            // THEN the flow updates
+            assertThat(latest).isEqualTo(wp2)
+        }
+
+    @Test
+    fun wallpaperInfo_wallpaperNotSupported_alwaysNull() =
+        testScope.runTest {
+            whenever(wallpaperManager.isWallpaperSupported).thenReturn(false)
+
+            val latest by collectLastValue(underTest.wallpaperInfo)
+            assertThat(latest).isNull()
+
+            // Even WHEN there *is* current wallpaper
+            val wp1 = mock<WallpaperInfo>()
+            whenever(wallpaperManager.getWallpaperInfoForUser(any())).thenReturn(wp1)
+            fakeBroadcastDispatcher.sendIntentToMatchingReceiversOnly(
+                context,
+                Intent(Intent.ACTION_WALLPAPER_CHANGED),
+            )
+
+            // THEN the value is still null because wallpaper isn't supported
+            assertThat(latest).isNull()
+        }
+
+    @Test
+    fun wallpaperInfo_deviceDoesNotSupportAmbientWallpaper_alwaysFalse() =
+        testScope.runTest {
+            context.orCreateTestableResources.addOverride(
+                com.android.internal.R.bool.config_dozeSupportsAodWallpaper,
+                false
+            )
+
+            val latest by collectLastValue(underTest.wallpaperInfo)
+            assertThat(latest).isNull()
+
+            // Even WHEN there *is* current wallpaper
+            val wp1 = mock<WallpaperInfo>()
+            whenever(wallpaperManager.getWallpaperInfoForUser(any())).thenReturn(wp1)
+            fakeBroadcastDispatcher.sendIntentToMatchingReceiversOnly(
+                context,
+                Intent(Intent.ACTION_WALLPAPER_CHANGED),
+            )
+
+            // THEN the value is still null because wallpaper isn't supported
+            assertThat(latest).isNull()
+        }
+
+    @Test
     fun wallpaperSupportsAmbientMode_nullInfo_false() =
         testScope.runTest {
             val latest by collectLastValue(underTest.wallpaperSupportsAmbientMode)
@@ -190,14 +355,12 @@ class WallpaperRepositoryImplTest : SysuiTestCase() {
         testScope.runTest {
             val latest by collectLastValue(underTest.wallpaperSupportsAmbientMode)
 
-            val info: WallpaperInfo = mock()
-            whenever(info.supportsAmbientMode()).thenReturn(false)
-            whenever(wallpaperManager.getWallpaperInfoForUser(any())).thenReturn(info)
+            whenever(wallpaperManager.getWallpaperInfoForUser(any())).thenReturn(UNSUPPORTED_WP)
 
             assertThat(latest).isFalse()
 
             // WHEN the info now supports ambient mode and a broadcast is sent
-            whenever(info.supportsAmbientMode()).thenReturn(true)
+            whenever(wallpaperManager.getWallpaperInfoForUser(any())).thenReturn(SUPPORTED_WP)
             fakeBroadcastDispatcher.sendIntentToMatchingReceiversOnly(
                 context,
                 Intent(Intent.ACTION_WALLPAPER_CHANGED),