Make Recents purely optional

To be able to inject Optional.empty to Optional,Recents>, this CL
removes raw Recents references and replaces those with
Optional<Recents>.

Bug: 144309772
Test: atest SystemUITests
Change-Id: Ib63739cab8da345a479cc27b2c8b011231f5cfe5

packages/SystemUI/src/com/android/systemui/Dependency.java

@@ -66,7 +66,6 @@ import com.android.systemui.power.PowerUI;
 import com.android.systemui.privacy.PrivacyItemController;
 import com.android.systemui.qs.ReduceBrightColorsController;
 import com.android.systemui.recents.OverviewProxyService;
-import com.android.systemui.recents.Recents;
 import com.android.systemui.screenrecord.RecordingController;
 import com.android.systemui.shared.plugins.PluginManager;
 import com.android.systemui.shared.system.ActivityManagerWrapper;
@@ -348,7 +347,6 @@ public class Dependency {
     @Inject Lazy<DozeParameters> mDozeParameters;
     @Inject Lazy<IWallpaperManager> mWallpaperManager;
     @Inject Lazy<CommandQueue> mCommandQueue;
-    @Inject Lazy<Recents> mRecents;
     @Inject Lazy<RecordingController> mRecordingController;
     @Inject Lazy<ProtoTracer> mProtoTracer;
     @Inject Lazy<MediaOutputDialogFactory> mMediaOutputDialogFactory;
@@ -551,7 +549,6 @@ public class Dependency {
         mProviders.put(DozeParameters.class, mDozeParameters::get);
         mProviders.put(IWallpaperManager.class, mWallpaperManager::get);
         mProviders.put(CommandQueue.class, mCommandQueue::get);
-        mProviders.put(Recents.class, mRecents::get);
         mProviders.put(ProtoTracer.class, mProtoTracer::get);
         mProviders.put(DeviceConfigProxy.class, mDeviceConfigProxy::get);
         mProviders.put(TelephonyListenerManager.class, mTelephonyListenerManager::get);

packages/SystemUI/src/com/android/systemui/accessibility/SystemActions.java

@@ -140,7 +140,7 @@ public class SystemActions extends SystemUI {
     private static final String PERMISSION_SELF = "com.android.systemui.permission.SELF";
 
     private final SystemActionsBroadcastReceiver mReceiver;
-    private final Recents mRecents;
+    private final Optional<Recents> mRecentsOptional;
     private Locale mLocale;
     private final AccessibilityManager mA11yManager;
     private final Lazy<Optional<StatusBar>> mStatusBarOptionalLazy;
@@ -152,9 +152,9 @@ public class SystemActions extends SystemUI {
     public SystemActions(Context context,
             NotificationShadeWindowController notificationShadeController,
             Lazy<Optional<StatusBar>> statusBarOptionalLazy,
-            Recents recents) {
+            Optional<Recents> recentsOptional) {
         super(context);
-        mRecents = recents;
+        mRecentsOptional = recentsOptional;
         mReceiver = new SystemActionsBroadcastReceiver();
         mLocale = mContext.getResources().getConfiguration().getLocales().get(0);
         mA11yManager = (AccessibilityManager) mContext.getSystemService(
@@ -370,7 +370,7 @@ public class SystemActions extends SystemUI {
     }
 
     private void handleRecents() {
-        mRecents.toggleRecentApps();
+        mRecentsOptional.ifPresent(Recents::toggleRecentApps);
     }
 
     private void handleNotifications() {

packages/SystemUI/src/com/android/systemui/navigationbar/NavigationBar.java

@@ -611,6 +611,7 @@ public class NavigationBar implements View.OnAttachStateChangeListener,
     @Override
     public void onViewAttachedToWindow(View v) {
         final Display display = v.getDisplay();
+        mNavigationBarView.setComponents(mRecentsOptional);
         mNavigationBarView.setComponents(mStatusBarOptionalLazy.get().get().getPanelController());
         mNavigationBarView.setDisabledFlags(mDisabledFlags1);
         mNavigationBarView.setOnVerticalChangedListener(this::onVerticalChanged);

packages/SystemUI/src/com/android/systemui/navigationbar/NavigationBarView.java

@@ -98,6 +98,7 @@ import com.android.wm.shell.pip.Pip;
 import java.io.PrintWriter;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Optional;
 import java.util.function.Consumer;
 
 public class NavigationBarView extends FrameLayout implements
@@ -165,6 +166,7 @@ public class NavigationBarView extends FrameLayout implements
 
     private NavigationBarInflaterView mNavigationInflaterView;
     private RecentsOnboarding mRecentsOnboarding;
+    private Optional<Recents> mRecentsOptional = Optional.empty();
     private NotificationPanelViewController mPanelView;
     private RotationContextButton mRotationContextButton;
     private FloatingRotationButton mFloatingRotationButton;
@@ -253,7 +255,7 @@ public class NavigationBarView extends FrameLayout implements
                 @Override
                 public boolean performAccessibilityAction(View host, int action, Bundle args) {
                     if (action == R.id.action_toggle_overview) {
-                        Dependency.get(Recents.class).toggleRecentApps();
+                        mRecentsOptional.ifPresent(Recents::toggleRecentApps);
                     } else {
                         return super.performAccessibilityAction(host, action, args);
                     }
@@ -397,6 +399,10 @@ public class NavigationBarView extends FrameLayout implements
         return mBarTransitions.getLightTransitionsController();
     }
 
+    public void setComponents(Optional<Recents> recentsOptional) {
+        mRecentsOptional = recentsOptional;
+    }
+
     public void setComponents(NotificationPanelViewController panel) {
         mPanelView = panel;
         updatePanelSystemUiStateFlags();