[Central Surfaces] Make LetterboxBackgroundProvider a singleton.

See bug for more information.

Bug: 277762009
Test: compiles
Test: `adb shell dumpsys activity service
com.android.systemui/.SystemUIService LetterboxBackgroundProvider` ->
dumps letterbox provider info
Test: atest LetterboxBackgroundProviderTest

Change-Id: Id589c335d19468d3320b8a33ea0ed5d2246e0f5b

packages/SystemUI/src/com/android/systemui/dagger/SystemUICoreStartableModule.kt

@@ -48,6 +48,7 @@ import com.android.systemui.settings.dagger.MultiUserUtilsModule
 import com.android.systemui.shortcut.ShortcutKeyDispatcher
 import com.android.systemui.statusbar.notification.InstantAppNotifier
 import com.android.systemui.statusbar.phone.KeyguardLiftController
+import com.android.systemui.statusbar.phone.LetterboxModule
 import com.android.systemui.stylus.StylusUsiPowerStartable
 import com.android.systemui.temporarydisplay.chipbar.ChipbarCoordinator
 import com.android.systemui.theme.ThemeOverlayController
@@ -66,7 +67,8 @@ import dagger.multibindings.IntoMap
  */
 @Module(includes = [
     MultiUserUtilsModule::class,
-    StartControlsStartableModule::class
+    StartControlsStartableModule::class,
+    LetterboxModule::class,
 ])
 abstract class SystemUICoreStartableModule {
     /** Inject into AuthController.  */

packages/SystemUI/src/com/android/systemui/statusbar/phone/LetterboxBackgroundProvider.kt

@@ -22,28 +22,25 @@ import android.graphics.Color
 import android.os.Handler
 import android.os.RemoteException
 import android.view.IWindowManager
+import com.android.systemui.CoreStartable
 import com.android.systemui.Dumpable
+import com.android.systemui.dagger.SysUISingleton
 import com.android.systemui.dagger.qualifiers.Background
 import com.android.systemui.dagger.qualifiers.Main
-import com.android.systemui.dump.DumpManager
-import com.android.systemui.statusbar.phone.dagger.CentralSurfacesComponent
-import com.android.systemui.statusbar.phone.dagger.CentralSurfacesComponent.CentralSurfacesScope
 import java.io.PrintWriter
 import java.util.concurrent.Executor
 import javax.inject.Inject
 
 /** Responsible for providing information about the background of letterboxed apps. */
-@CentralSurfacesScope
+@SysUISingleton
 class LetterboxBackgroundProvider
 @Inject
 constructor(
     private val windowManager: IWindowManager,
     @Background private val backgroundExecutor: Executor,
-    private val dumpManager: DumpManager,
     private val wallpaperManager: WallpaperManager,
     @Main private val mainHandler: Handler,
-) : CentralSurfacesComponent.Startable, Dumpable {
-
+) : CoreStartable, Dumpable {
     @ColorInt
     var letterboxBackgroundColor: Int = Color.BLACK
         private set
@@ -57,7 +54,6 @@ constructor(
         }
 
     override fun start() {
-        dumpManager.registerDumpable(javaClass.simpleName, this)
         fetchBackgroundColorInfo()
         wallpaperManager.addOnColorsChangedListener(wallpaperColorsListener, mainHandler)
     }
@@ -74,11 +70,6 @@ constructor(
         }
     }
 
-    override fun stop() {
-        dumpManager.unregisterDumpable(javaClass.simpleName)
-        wallpaperManager.removeOnColorsChangedListener(wallpaperColorsListener)
-    }
-
     override fun dump(pw: PrintWriter, args: Array<out String>) {
         pw.println(
             """

packages/SystemUI/src/com/android/systemui/statusbar/phone/LetterboxModule.kt

@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2023 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.systemui.statusbar.phone
+
+import com.android.systemui.CoreStartable
+import dagger.Binds
+import dagger.Module
+import dagger.multibindings.ClassKey
+import dagger.multibindings.IntoMap
+
+@Module
+abstract class LetterboxModule {
+    @Binds
+    @IntoMap
+    @ClassKey(LetterboxBackgroundProvider::class)
+    abstract fun bindFeature(impl: LetterboxBackgroundProvider): CoreStartable
+}

packages/SystemUI/src/com/android/systemui/statusbar/phone/dagger/CentralSurfacesStartableModule.java

@@ -17,16 +17,15 @@
 package com.android.systemui.statusbar.phone.dagger;
 
 import com.android.systemui.statusbar.phone.LetterboxAppearanceCalculator;
-import com.android.systemui.statusbar.phone.LetterboxBackgroundProvider;
 import com.android.systemui.statusbar.phone.SystemBarAttributesListener;
 
-import java.util.Set;
-
 import dagger.Binds;
 import dagger.Module;
 import dagger.multibindings.IntoSet;
 import dagger.multibindings.Multibinds;
 
+import java.util.Set;
+
 @Module
 interface CentralSurfacesStartableModule {
     @Multibinds
@@ -41,9 +40,4 @@ interface CentralSurfacesStartableModule {
     @IntoSet
     CentralSurfacesComponent.Startable sysBarAttrsListener(
             SystemBarAttributesListener systemBarAttributesListener);
-
-    @Binds
-    @IntoSet
-    CentralSurfacesComponent.Startable letterboxBgProvider(
-            LetterboxBackgroundProvider letterboxBackgroundProvider);
 }

packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/LetterboxBackgroundProviderTest.kt

@@ -25,7 +25,6 @@ import android.testing.AndroidTestingRunner
 import android.view.IWindowManager
 import androidx.test.filters.SmallTest
 import com.android.systemui.SysuiTestCase
-import com.android.systemui.dump.DumpManager
 import com.android.systemui.util.concurrency.FakeExecutor
 import com.android.systemui.util.mockito.eq
 import com.android.systemui.util.time.FakeSystemClock
@@ -52,7 +51,6 @@ class LetterboxBackgroundProviderTest : SysuiTestCase() {
     @get:Rule var expect: Expect = Expect.create()
 
     @Mock private lateinit var windowManager: IWindowManager
-    @Mock private lateinit var dumpManager: DumpManager
     @Mock private lateinit var wallpaperManager: WallpaperManager
 
     private lateinit var provider: LetterboxBackgroundProvider
@@ -65,8 +63,7 @@ class LetterboxBackgroundProviderTest : SysuiTestCase() {
 
         setUpWallpaperManager()
         provider =
-            LetterboxBackgroundProvider(
-                windowManager, fakeExecutor, dumpManager, wallpaperManager, mainHandler)
+            LetterboxBackgroundProvider(windowManager, fakeExecutor, wallpaperManager, mainHandler)
     }
 
     private fun setUpWallpaperManager() {