review fixes

vector/src/main/java/im/vector/app/features/home/room/list/home/HomeFilteredRoomsController.kt

@@ -16,6 +16,7 @@
 
 package im.vector.app.features.home.room.list.home
 
+import androidx.paging.PagedList
 import com.airbnb.epoxy.EpoxyModel
 import com.airbnb.epoxy.paging.PagedListEpoxyController
 import im.vector.app.core.platform.StateView
@@ -75,6 +76,13 @@ class HomeFilteredRoomsController @Inject constructor(
         this.emptyStateData = state
     }
 
+    fun submitPagedList(newList: PagedList<RoomSummary>) {
+        submitList(newList)
+        if (newList.isEmpty()) {
+            requestForcedModelBuild()
+        }
+    }
+
     override fun buildItemModel(currentPosition: Int, item: RoomSummary?): EpoxyModel<*> {
         return if (item == null) {
             val host = this

vector/src/main/java/im/vector/app/features/home/room/list/home/HomeRoomListFragment.kt

@@ -154,7 +154,7 @@ class HomeRoomListFragment :
 
         roomListViewModel.onEach(HomeRoomListViewState::roomsPagedList) { roomsList ->
             roomsList?.let {
-                roomsController.submitList(it)
+                roomsController.submitPagedList(it)
                 if (it.isEmpty()) {
                     roomsController.requestForcedModelBuild()
                 }

vector/src/main/java/im/vector/app/features/home/room/list/home/HomeRoomListViewModel.kt

@@ -19,7 +19,6 @@ package im.vector.app.features.home.room.list.home
 import android.widget.ImageView
 import androidx.lifecycle.asFlow
 import androidx.paging.PagedList
-import arrow.core.Option
 import arrow.core.toOption
 import com.airbnb.mvrx.MavericksViewModelFactory
 import dagger.assisted.Assisted
@@ -37,7 +36,6 @@ import im.vector.app.features.displayname.getBestName
 import im.vector.app.features.home.room.list.home.header.HomeRoomFilter
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
-import kotlinx.coroutines.cancel
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.flow.asSharedFlow
@@ -46,7 +44,6 @@ import kotlinx.coroutines.flow.distinctUntilChanged
 import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.flow.flatMapLatest
 import kotlinx.coroutines.flow.flow
-import kotlinx.coroutines.flow.flowOn
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.onEach
@@ -90,7 +87,6 @@ class HomeRoomListViewModel @AssistedInject constructor(
 
     companion object : MavericksViewModelFactory<HomeRoomListViewModel, HomeRoomListViewState> by hiltMavericksViewModelFactory()
 
-    private var roomsFlow: Flow<Option<RoomSummary>>? = null
     private val pagedListConfig = PagedList.Config.Builder()
             .setPageSize(10)
             .setInitialLoadSizeHint(20)
@@ -258,7 +254,6 @@ class HomeRoomListViewModel @AssistedInject constructor(
                     )
                     emitEmptyState()
                 }
-                .also { roomsFlow = it }
                 .launchIn(viewModelScope)
 
         roomsFlowJob?.cancel(CancellationException())
@@ -268,7 +263,6 @@ class HomeRoomListViewModel @AssistedInject constructor(
                 .onEach {
                     setState { copy(roomsPagedList = it) }
                 }
-                .flowOn(Dispatchers.Default)
                 .launchIn(viewModelScope)
     }