Just go back to the timeline if the user is already viewing the DM with the other user.

Fix #6514

vector/src/main/java/im/vector/app/features/home/room/detail/RoomDetailPendingAction.kt

@@ -17,6 +17,7 @@
 package im.vector.app.features.home.room.detail
 
 sealed class RoomDetailPendingAction {
+    object DoNothing : RoomDetailPendingAction()
     data class JumpToReadReceipt(val userId: String) : RoomDetailPendingAction()
     data class MentionUser(val userId: String) : RoomDetailPendingAction()
     data class OpenRoom(val roomId: String, val closeCurrentRoom: Boolean = false) : RoomDetailPendingAction()

vector/src/main/java/im/vector/app/features/home/room/detail/TimelineFragment.kt

@@ -1323,6 +1323,7 @@ class TimelineFragment @Inject constructor(
 
     private fun handlePendingAction(roomDetailPendingAction: RoomDetailPendingAction) {
         when (roomDetailPendingAction) {
+            RoomDetailPendingAction.DoNothing -> Unit
             is RoomDetailPendingAction.JumpToReadReceipt ->
                 timelineViewModel.handle(RoomDetailAction.JumpToReadReceipt(roomDetailPendingAction.userId))
             is RoomDetailPendingAction.MentionUser ->

vector/src/main/java/im/vector/app/features/roommemberprofile/RoomMemberProfileFragment.kt

@@ -136,6 +136,7 @@ class RoomMemberProfileFragment @Inject constructor(
                 is RoomMemberProfileViewEvents.OnBanActionSuccess -> Unit
                 is RoomMemberProfileViewEvents.OnIgnoreActionSuccess -> Unit
                 is RoomMemberProfileViewEvents.OnInviteActionSuccess -> Unit
+                RoomMemberProfileViewEvents.GoBack -> handleGoBack()
             }
         }
         setupLongClicks()
@@ -309,6 +310,11 @@ class RoomMemberProfileFragment @Inject constructor(
         viewModel.handle(RoomMemberProfileAction.OpenOrCreateDm(fragmentArgs.userId))
     }
 
+    private fun handleGoBack() {
+        roomDetailPendingActionStore.data = RoomDetailPendingAction.DoNothing
+        vectorBaseActivity.finish()
+    }
+
     override fun onJumpToReadReceiptClicked() {
         roomDetailPendingActionStore.data = RoomDetailPendingAction.JumpToReadReceipt(fragmentArgs.userId)
         vectorBaseActivity.finish()

vector/src/main/java/im/vector/app/features/roommemberprofile/RoomMemberProfileViewEvents.kt

@@ -40,4 +40,5 @@ sealed class RoomMemberProfileViewEvents : VectorViewEvents {
 
     data class ShareRoomMemberProfile(val permalink: String) : RoomMemberProfileViewEvents()
     data class OpenRoom(val roomId: String) : RoomMemberProfileViewEvents()
+    object GoBack : RoomMemberProfileViewEvents()
 }

vector/src/main/java/im/vector/app/features/roommemberprofile/RoomMemberProfileViewModel.kt

@@ -183,6 +183,9 @@ class RoomMemberProfileViewModel @AssistedInject constructor(
             }
             if (roomId != initialState.roomId) {
                 _viewEvents.post(RoomMemberProfileViewEvents.OpenRoom(roomId = roomId))
+            } else {
+                // Just go back to the previous screen (timeline)
+                _viewEvents.post(RoomMemberProfileViewEvents.GoBack)
             }
         }
     }