Only allow filtering when a board has been set to avoid errors

Signed-off-by: Stefan Niedermann <info@niedermann.it>

1 files changed, 8 insertions, 2 deletions

diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/ui/MainViewModel.java b/app/src/main/java/it/niedermann/nextcloud/deck/ui/MainViewModel.java
index e5bd4f482..b73b86b33 100644
--- a/app/src/main/java/it/niedermann/nextcloud/deck/ui/MainViewModel.java
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/ui/MainViewModel.java
@@ -15,6 +15,7 @@ import it.niedermann.nextcloud.deck.model.Board;
 public class MainViewModel extends AndroidViewModel {
 
     private MutableLiveData<Account> currentAccount = new MutableLiveData<>();
+    @Nullable
     private Board currentBoard;
     private boolean currentAccountHasArchivedBoards = false;
 
@@ -37,16 +38,21 @@ public class MainViewModel extends AndroidViewModel {
         this.currentAccountIsSupportedVersion = currentAccount.getServerDeckVersionAsObject().isSupported(getApplication().getApplicationContext());
     }
 
-    public void setCurrentBoard(Board currentBoard) {
+    public void setCurrentBoard(@NonNull Board currentBoard) {
         this.currentBoard = currentBoard;
     }
 
     public Long getCurrentBoardLocalId() {
+        if(currentBoard == null) {
+            throw new IllegalStateException("getCurrentBoardLocalId() called before setCurrentBoard()");
+        }
         return this.currentBoard.getLocalId();
     }
 
-    @Nullable
     public Long getCurrentBoardRemoteId() {
+        if(currentBoard == null) {
+            throw new IllegalStateException("getCurrentBoardRemoteId() called before setCurrentBoard()");
+        }
         return this.currentBoard.getId();
     }