[Flexiglass] Don't emit the same values from Set<HeadsUpRowKey> flows

Only emit from the Set<HeadsUpRowKey> flows if there is a change, to make
the binder's job easier when it is diffing for previous keys to generate
animation events.

Bug: 400691495
Flag: com.android.systemui.scene_container
Test: observe HUN intro/outro animations

Change-Id: I75f7cae9fd87b5d869d17976bf37ba06b6da26a3

1 files changed, 4 insertions, 4 deletions

diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/notification/domain/interactor/HeadsUpNotificationInteractor.kt b/packages/SystemUI/src/com/android/systemui/statusbar/notification/domain/interactor/HeadsUpNotificationInteractor.kt
index cdbe0fd23a9a..8d1e61123fdd 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/notification/domain/interactor/HeadsUpNotificationInteractor.kt
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/notification/domain/interactor/HeadsUpNotificationInteractor.kt
@@ -81,7 +81,7 @@ constructor(
         if (SceneContainerFlag.isUnexpectedlyInLegacyMode()) {
             flowOf(emptySet())
         } else {
-            activeHeadsUpRows.map { it.map { (repo, _) -> repo }.toSet() }
+            activeHeadsUpRows.map { it.map { (repo, _) -> repo }.toSet() }.distinctUntilChanged()
         }
     }
 
@@ -90,9 +90,9 @@ constructor(
         if (SceneContainerFlag.isUnexpectedlyInLegacyMode()) {
             flowOf(emptySet())
         } else {
-            activeHeadsUpRows.map {
-                it.filter { (_, isPinned) -> isPinned }.map { (repo, _) -> repo }.toSet()
-            }
+            activeHeadsUpRows
+                .map { it.filter { (_, isPinned) -> isPinned }.map { (repo, _) -> repo }.toSet() }
+                .distinctUntilChanged() // TODO(b/402428276) stop sending duplicate updates instead
         }
     }