Hide UserSwitchTransitionView if it is not hidden within timeout.

This prevents being stuck in the Loading screen even if the proper
User Lifecycle event was not broadcast.

Test: Unit Tests + Manual -- Verify that the UserSwitchTransitionView is
hidden after the timeout threshold when the UserLifecycleEvent listener
is not registered.
Bug: 158705895

Change-Id: I895f04bda395bac271b01fbb414a8bf484348324

packages/CarSystemUI/res/values/config.xml

@@ -118,4 +118,7 @@
         <item>com.android.systemui.car.window.SystemUIOverlayWindowManager</item>
         <item>com.android.systemui.car.volume.VolumeUI</item>
     </string-array>
+
+    <!-- How many milliseconds to wait before force hiding the UserSwitchTransitionView -->
+    <integer name="config_userSwitchTransitionViewShownTimeoutMs" translatable="false">5000</integer>
 </resources>

packages/CarSystemUI/src/com/android/systemui/car/userswitcher/UserSwitchTransitionViewController.java

@@ -33,6 +33,7 @@ import android.widget.ImageView;
 import android.widget.TextView;
 
 import com.android.internal.annotations.GuardedBy;
+import com.android.internal.annotations.VisibleForTesting;
 import com.android.settingslib.drawable.CircleFramedDrawable;
 import com.android.systemui.R;
 import com.android.systemui.car.window.OverlayViewController;
@@ -49,12 +50,22 @@ import javax.inject.Singleton;
 public class UserSwitchTransitionViewController extends OverlayViewController {
     private static final String TAG = "UserSwitchTransition";
     private static final String ENABLE_DEVELOPER_MESSAGE_TRUE = "true";
+    private static final boolean DEBUG = false;
 
     private final Context mContext;
     private final Handler mHandler;
     private final Resources mResources;
     private final UserManager mUserManager;
     private final IWindowManager mWindowManagerService;
+    private final int mWindowShownTimeoutMs;
+    private final Runnable mWindowShownTimeoutCallback = () -> {
+        if (DEBUG) {
+            Log.w(TAG, "Window was not hidden within " + getWindowShownTimeoutMs() + " ms, so it"
+                    + "was hidden by mWindowShownTimeoutCallback.");
+        }
+
+        handleHide();
+    };
 
     @GuardedBy("this")
     private boolean mShowing;
@@ -76,6 +87,8 @@ public class UserSwitchTransitionViewController extends OverlayViewController {
         mResources = resources;
         mUserManager = userManager;
         mWindowManagerService = windowManagerService;
+        mWindowShownTimeoutMs = mResources.getInteger(
+                R.integer.config_userSwitchTransitionViewShownTimeoutMs);
     }
 
     /**
@@ -98,6 +111,9 @@ public class UserSwitchTransitionViewController extends OverlayViewController {
             populateDialog(mPreviousUserId, newUserId);
             // next time a new user is selected, this current new user will be the previous user.
             mPreviousUserId = newUserId;
+            // In case the window is still showing after WINDOW_SHOWN_TIMEOUT_MS, then hide the
+            // window and log a warning message.
+            mHandler.postDelayed(mWindowShownTimeoutCallback, mWindowShownTimeoutMs);
         });
     }
 
@@ -105,6 +121,12 @@ public class UserSwitchTransitionViewController extends OverlayViewController {
         if (!mShowing) return;
         mShowing = false;
         mHandler.post(this::stop);
+        mHandler.removeCallbacks(mWindowShownTimeoutCallback);
+    }
+
+    @VisibleForTesting
+    int getWindowShownTimeoutMs() {
+        return mWindowShownTimeoutMs;
     }
 
     private void populateDialog(@UserIdInt int previousUserId, @UserIdInt int newUserId) {

packages/CarSystemUI/tests/src/com/android/systemui/car/userswitcher/UserSwitchTransitionViewControllerTest.java

@@ -18,6 +18,8 @@ package com.android.systemui.car.userswitcher;
 
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.reset;
 import static org.mockito.Mockito.verify;
 
 import android.content.Context;
@@ -122,6 +124,29 @@ public class UserSwitchTransitionViewControllerTest extends SysuiTestCase {
                 any());
     }
 
+    @Test
+    public void onWindowShownTimeoutPassed_viewNotHidden_hidesUserSwitchTransitionView() {
+        mCarUserSwitchingDialogController.handleShow(/* currentUserId= */ TEST_USER_1);
+        reset(mOverlayViewGlobalStateController);
+
+        getContext().getMainThreadHandler().postDelayed(() -> {
+            verify(mOverlayViewGlobalStateController).hideView(
+                    eq(mCarUserSwitchingDialogController), any());
+        }, mCarUserSwitchingDialogController.getWindowShownTimeoutMs() + 10);
+    }
+
+    @Test
+    public void onWindowShownTimeoutPassed_viewHidden_doesNotHideUserSwitchTransitionViewAgain() {
+        mCarUserSwitchingDialogController.handleShow(/* currentUserId= */ TEST_USER_1);
+        mCarUserSwitchingDialogController.handleHide();
+        reset(mOverlayViewGlobalStateController);
+
+        getContext().getMainThreadHandler().postDelayed(() -> {
+            verify(mOverlayViewGlobalStateController, never()).hideView(
+                    eq(mCarUserSwitchingDialogController), any());
+        }, mCarUserSwitchingDialogController.getWindowShownTimeoutMs() + 10);
+    }
+
     private final class TestableUserSwitchTransitionViewController extends
             UserSwitchTransitionViewController {