Initialize Clock Size from NotificationPanelViewController

In change I0885d19e297ff5f881271ed0347e9699b3494928 I defaulted
the small clock to invisible, which likely introduced this bug.
From logs, it looks like an edge where neither clock is never
selected. We correct this by always calling `switchToClock` with
the correct size argument as soon as `KeyguardStatusViewController`
is acquired by `NotificationPanelViewController`

Fixes: 256809954
Test: Manully tested on a couple devices
Change-Id: I9143d6162411065ed2ed80cfa84d73e222c1f231

packages/SystemUI/src/com/android/systemui/shade/NotificationPanelViewController.java

@@ -916,6 +916,7 @@ public final class NotificationPanelViewController implements Dumpable {
         mQsFrameTranslateController = qsFrameTranslateController;
         updateUserSwitcherFlags();
         mKeyguardBottomAreaViewModel = keyguardBottomAreaViewModel;
+        mKeyguardBottomAreaInteractor = keyguardBottomAreaInteractor;
         onFinishInflate();
         keyguardUnlockAnimationController.addKeyguardUnlockAnimationListener(
                 new KeyguardUnlockAnimationController.KeyguardUnlockAnimationListener() {
@@ -933,7 +934,6 @@ public final class NotificationPanelViewController implements Dumpable {
                         unlockAnimationStarted(playingCannedAnimation, isWakeAndUnlock, startDelay);
                     }
                 });
-        mKeyguardBottomAreaInteractor = keyguardBottomAreaInteractor;
         dumpManager.registerDumpable(this);
     }
 
@@ -1109,6 +1109,7 @@ public final class NotificationPanelViewController implements Dumpable {
                 mKeyguardStatusViewComponentFactory.build(keyguardStatusView);
         mKeyguardStatusViewController = statusViewComponent.getKeyguardStatusViewController();
         mKeyguardStatusViewController.init();
+        updateClockAppearance();
 
         if (mKeyguardUserSwitcherController != null) {
             // Try to close the switcher so that callbacks are triggered if necessary.

packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/NotificationStackScrollLayoutController.java

@@ -975,7 +975,7 @@ public class NotificationStackScrollLayoutController {
     }
 
     public boolean isAddOrRemoveAnimationPending() {
-        return mView.isAddOrRemoveAnimationPending();
+        return mView != null && mView.isAddOrRemoveAnimationPending();
     }
 
     public int getVisibleNotificationCount() {
@@ -1132,7 +1132,9 @@ public class NotificationStackScrollLayoutController {
     }
 
     public void setAlpha(float alpha) {
-        mView.setAlpha(alpha);
+        if (mView != null) {
+            mView.setAlpha(alpha);
+        }
     }
 
     public float calculateAppearFraction(float height) {

packages/SystemUI/tests/src/com/android/systemui/shade/NotificationPanelViewControllerTest.java

@@ -43,6 +43,7 @@ import static org.mockito.Mockito.doAnswer;
 import static org.mockito.Mockito.inOrder;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.reset;
 import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
@@ -530,6 +531,8 @@ public class NotificationPanelViewControllerTest extends SysuiTestCase {
                 .setHeadsUpAppearanceController(mock(HeadsUpAppearanceController.class));
         verify(mNotificationStackScrollLayoutController)
                 .setOnEmptySpaceClickListener(mEmptySpaceClickListenerCaptor.capture());
+        verify(mKeyguardStatusViewController).displayClock(LARGE, /* animate */ true);
+        reset(mKeyguardStatusViewController);
     }
 
     @After
@@ -609,7 +612,7 @@ public class NotificationPanelViewControllerTest extends SysuiTestCase {
 
     @Test
     public void getVerticalSpaceForLockscreenNotifications_useLockIconBottomPadding_returnsSpaceAvailable() {
-        setBottomPadding(/* stackScrollLayoutBottom= */ 100,
+        setBottomPadding(/* stackScrollLayoutBottom= */ 180,
                 /* lockIconPadding= */ 20,
                 /* indicationPadding= */ 0,
                 /* ambientPadding= */ 0);
@@ -620,7 +623,7 @@ public class NotificationPanelViewControllerTest extends SysuiTestCase {
 
     @Test
     public void getVerticalSpaceForLockscreenNotifications_useIndicationBottomPadding_returnsSpaceAvailable() {
-        setBottomPadding(/* stackScrollLayoutBottom= */ 100,
+        setBottomPadding(/* stackScrollLayoutBottom= */ 180,
                 /* lockIconPadding= */ 0,
                 /* indicationPadding= */ 30,
                 /* ambientPadding= */ 0);
@@ -631,7 +634,7 @@ public class NotificationPanelViewControllerTest extends SysuiTestCase {
 
     @Test
     public void getVerticalSpaceForLockscreenNotifications_useAmbientBottomPadding_returnsSpaceAvailable() {
-        setBottomPadding(/* stackScrollLayoutBottom= */ 100,
+        setBottomPadding(/* stackScrollLayoutBottom= */ 180,
                 /* lockIconPadding= */ 0,
                 /* indicationPadding= */ 0,
                 /* ambientPadding= */ 40);
@@ -1014,7 +1017,7 @@ public class NotificationPanelViewControllerTest extends SysuiTestCase {
     }
 
     @Test
-    public void testFinishInflate_userSwitcherDisabled_doNotInflateUserSwitchView() {
+    public void testFinishInflate_userSwitcherDisabled_doNotInflateUserSwitchView_initClock() {
         givenViewAttached();
         when(mResources.getBoolean(
                 com.android.internal.R.bool.config_keyguardUserSwitcher)).thenReturn(true);
@@ -1025,6 +1028,7 @@ public class NotificationPanelViewControllerTest extends SysuiTestCase {
         mNotificationPanelViewController.onFinishInflate();
 
         verify(mUserSwitcherStubView, never()).inflate();
+        verify(mKeyguardStatusViewController, times(3)).displayClock(LARGE, /* animate */ true);
     }
 
     @Test