Restart IMM connection when running on automitive visible bkg user

This changelist configures the mPasswordEntry#onClickListener to re-establish the IME connection (InputMethodManager#restartInput) only when operating on automotive surfaces with visible background users enabled.

This change is necessary because, in concurrent multi-user mode, the InputMethodManagerService currently permits only a single display-user binding.

On automotive systems (HSUM) with visible background users enabled, the emulator boots up for all existing displays, which typically exceeds one. Consequently, InputMethodManager#startInputOrWindowGainedFocus is invoked for user 0 on every display. However, if the main user (the driver in the automotive context) attempts to log in on display 0, it may fail.
For instance, if the last call to InputMethodManager#startInputOrWindowGainedFocus was for display 3, the driver (user 10) cannot display input on display 0, as the InputMethodManagerService is now bound to display 3.

This issue will be resolved in the future by allowing the InputMethodManagerService to maintain multiple display-user bindings for a single user.

Phones and tablets should not experience any changes as this modification is specifically targeted towards automotive devices, requiring the config_perDisplayFocusEnabled config and visible background user feature to be enabled.

Test: presubmit
Test: atest CtsInputMethodTestCases
Bug: 358105425
Flag: EXEMPT bug fix
Change-Id: I845f462892a13cb200ec8698ee37cbf3b481c479

Author: Antonio Kantek

packages/SystemUI/multivalentTests/src/com/android/keyguard/KeyguardPasswordViewControllerTest.kt

@@ -29,6 +29,7 @@ import com.android.internal.util.LatencyTracker
 import com.android.internal.widget.LockPatternUtils
 import com.android.internal.widget.LockscreenCredential
 import com.android.keyguard.domain.interactor.KeyguardKeyboardInteractor
+import com.android.systemui.Flags as AconfigFlags
 import com.android.systemui.SysuiTestCase
 import com.android.systemui.classifier.FalsingCollector
 import com.android.systemui.flags.FakeFeatureFlags
@@ -56,7 +57,6 @@ import org.mockito.Mockito.never
 import org.mockito.Mockito.verify
 import org.mockito.Mockito.`when`
 import org.mockito.MockitoAnnotations
-import com.android.systemui.Flags as AconfigFlags
 
 @SmallTest
 @RunWith(AndroidJUnit4::class)
@@ -66,8 +66,7 @@ import com.android.systemui.Flags as AconfigFlags
 class KeyguardPasswordViewControllerTest : SysuiTestCase() {
     @Mock private lateinit var keyguardPasswordView: KeyguardPasswordView
     @Mock private lateinit var passwordEntry: EditText
-    private var passwordEntryLayoutParams =
-        ViewGroup.LayoutParams(/* width = */ 0, /* height = */ 0)
+    private var passwordEntryLayoutParams = ViewGroup.LayoutParams(/* width= */ 0, /* height= */ 0)
     @Mock lateinit var keyguardUpdateMonitor: KeyguardUpdateMonitor
     @Mock lateinit var securityMode: KeyguardSecurityModel.SecurityMode
     @Mock lateinit var lockPatternUtils: LockPatternUtils
@@ -106,6 +105,8 @@ class KeyguardPasswordViewControllerTest : SysuiTestCase() {
         whenever(keyguardPasswordView.findViewById<ImageView>(R.id.switch_ime_button))
             .thenReturn(mock(ImageView::class.java))
         `when`(keyguardPasswordView.resources).thenReturn(context.resources)
+        // TODO(b/362362385): No need to mock keyguardPasswordView.context once this bug is fixed.
+        `when`(keyguardPasswordView.context).thenReturn(context)
         whenever(passwordEntry.layoutParams).thenReturn(passwordEntryLayoutParams)
         val keyguardKeyboardInteractor = KeyguardKeyboardInteractor(FakeKeyboardRepository())
         val fakeFeatureFlags = FakeFeatureFlags()
@@ -187,9 +188,11 @@ class KeyguardPasswordViewControllerTest : SysuiTestCase() {
         verify(passwordEntry).setOnKeyListener(keyListenerArgumentCaptor.capture())
 
         val eventHandled =
-            keyListenerArgumentCaptor.value.onKey(keyguardPasswordView,
+            keyListenerArgumentCaptor.value.onKey(
+                keyguardPasswordView,
                 KeyEvent.KEYCODE_SPACE,
-                KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_SPACE))
+                KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_SPACE)
+            )
 
         assertFalse("Unlock attempted.", eventHandled)
     }
@@ -204,9 +207,11 @@ class KeyguardPasswordViewControllerTest : SysuiTestCase() {
         verify(passwordEntry).setOnKeyListener(keyListenerArgumentCaptor.capture())
 
         val eventHandled =
-            keyListenerArgumentCaptor.value.onKey(keyguardPasswordView,
+            keyListenerArgumentCaptor.value.onKey(
+                keyguardPasswordView,
                 KeyEvent.KEYCODE_ENTER,
-                KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER))
+                KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER)
+            )
 
         assertTrue("Unlock not attempted.", eventHandled)
     }

packages/SystemUI/src/com/android/keyguard/KeyguardPasswordViewController.java

@@ -19,9 +19,12 @@
 import static com.android.systemui.flags.Flags.LOCKSCREEN_ENABLE_LANDSCAPE;
 import static com.android.systemui.util.kotlin.JavaAdapterKt.collectFlow;
 
+import android.content.Context;
+import android.content.pm.PackageManager;
 import android.content.res.Resources;
 import android.graphics.drawable.Drawable;
 import android.os.UserHandle;
+import android.os.UserManager;
 import android.text.Editable;
 import android.text.InputType;
 import android.text.TextUtils;
@@ -170,8 +173,33 @@ protected void onViewAttached() {
         mPasswordEntry.setOnEditorActionListener(mOnEditorActionListener);
         mPasswordEntry.setOnKeyListener(mKeyListener);
         mPasswordEntry.addTextChangedListener(mTextWatcher);
+
         // Poke the wakelock any time the text is selected or modified
-        mPasswordEntry.setOnClickListener(v -> mKeyguardSecurityCallback.userActivity());
+        // TODO(b/362362385): Revert to the previous onClickListener implementation once this bug is
+        //  fixed.
+        mPasswordEntry.setOnClickListener(new View.OnClickListener() {
+
+            private final boolean mAutomotiveAndVisibleBackgroundUsers =
+                    isAutomotiveAndVisibleBackgroundUsers();
+
+            @Override
+            public void onClick(View v) {
+                if (mAutomotiveAndVisibleBackgroundUsers) {
+                    mInputMethodManager.restartInput(v);
+                }
+                mKeyguardSecurityCallback.userActivity();
+            }
+
+            private boolean isAutomotiveAndVisibleBackgroundUsers() {
+                final Context context = getContext();
+                return context.getPackageManager().hasSystemFeature(
+                        PackageManager.FEATURE_AUTOMOTIVE)
+                        && UserManager.isVisibleBackgroundUsersEnabled()
+                        && context.getResources().getBoolean(
+                        android.R.bool.config_perDisplayFocusEnabled);
+            }
+        });
+
         mSwitchImeButton.setOnClickListener(v -> {
             mKeyguardSecurityCallback.userActivity(); // Leave the screen on a bit longer
             // Do not show auxiliary subtypes in password lock screen.