Adds snapshot function for isKeyguardShowing.

This complements the already-existing flow version of the same property
and is needed by downstream CLs on this chain.

Bug: 246631653
Test: test updated
Change-Id: Ie37246d4b0614e477338dbcaad7e6aab0b7b0fa4

packages/SystemUI/src/com/android/systemui/keyguard/data/repository/KeyguardRepository.kt

@@ -85,6 +85,15 @@ interface KeyguardRepository {
      */
     val dozeAmount: Flow<Float>
 
+    /**
+     * Returns `true` if the keyguard is showing; `false` otherwise.
+     *
+     * Note: this is also `true` when the lock-screen is occluded with an `Activity` "above" it in
+     * the z-order (which is not really above the system UI window, but rather - the lock-screen
+     * becomes invisible to reveal the "occluding activity").
+     */
+    fun isKeyguardShowing(): Boolean
+
     /** Sets whether the bottom area UI should animate the transition out of doze state. */
     fun setAnimateDozingTransitions(animate: Boolean)
 
@@ -103,7 +112,7 @@ class KeyguardRepositoryImpl
 @Inject
 constructor(
     statusBarStateController: StatusBarStateController,
-    keyguardStateController: KeyguardStateController,
+    private val keyguardStateController: KeyguardStateController,
     dozeHost: DozeHost,
 ) : KeyguardRepository {
     private val _animateBottomAreaDozingTransitions = MutableStateFlow(false)
@@ -168,6 +177,10 @@ constructor(
         awaitClose { statusBarStateController.removeCallback(callback) }
     }
 
+    override fun isKeyguardShowing(): Boolean {
+        return keyguardStateController.isShowing
+    }
+
     override fun setAnimateDozingTransitions(animate: Boolean) {
         _animateBottomAreaDozingTransitions.value = animate
     }

packages/SystemUI/src/com/android/systemui/keyguard/domain/interactor/KeyguardInteractor.kt

@@ -29,7 +29,7 @@ import kotlinx.coroutines.flow.Flow
 class KeyguardInteractor
 @Inject
 constructor(
-    repository: KeyguardRepository,
+    private val repository: KeyguardRepository,
 ) {
     /**
      * The amount of doze the system is in, where `1.0` is fully dozing and `0.0` is not dozing at
@@ -40,4 +40,8 @@ constructor(
     val isDozing: Flow<Boolean> = repository.isDozing
     /** Whether the keyguard is showing ot not. */
     val isKeyguardShowing: Flow<Boolean> = repository.isKeyguardShowing
+
+    fun isKeyguardShowing(): Boolean {
+        return repository.isKeyguardShowing()
+    }
 }

packages/SystemUI/tests/src/com/android/systemui/keyguard/data/repository/KeyguardRepositoryImplTest.kt

@@ -116,6 +116,7 @@ class KeyguardRepositoryImplTest : SysuiTestCase() {
         val job = underTest.isKeyguardShowing.onEach { latest = it }.launchIn(this)
 
         assertThat(latest).isFalse()
+        assertThat(underTest.isKeyguardShowing()).isFalse()
 
         val captor = argumentCaptor<KeyguardStateController.Callback>()
         verify(keyguardStateController).addCallback(captor.capture())
@@ -123,10 +124,12 @@ class KeyguardRepositoryImplTest : SysuiTestCase() {
         whenever(keyguardStateController.isShowing).thenReturn(true)
         captor.value.onKeyguardShowingChanged()
         assertThat(latest).isTrue()
+        assertThat(underTest.isKeyguardShowing()).isTrue()
 
         whenever(keyguardStateController.isShowing).thenReturn(false)
         captor.value.onKeyguardShowingChanged()
         assertThat(latest).isFalse()
+        assertThat(underTest.isKeyguardShowing()).isFalse()
 
         job.cancel()
     }

packages/SystemUI/tests/utils/src/com/android/systemui/keyguard/data/repository/FakeKeyguardRepository.kt

@@ -44,6 +44,10 @@ class FakeKeyguardRepository : KeyguardRepository {
     private val _dozeAmount = MutableStateFlow(0f)
     override val dozeAmount: Flow<Float> = _dozeAmount
 
+    override fun isKeyguardShowing(): Boolean {
+        return _isKeyguardShowing.value
+    }
+
     override fun setAnimateDozingTransitions(animate: Boolean) {
         _animateBottomAreaDozingTransitions.tryEmit(animate)
     }