Improved local search

app/src/main/java/eu/faircode/email/DaoMessage.java

@@ -173,6 +173,13 @@ public interface DaoMessage {
             " ORDER BY message.received DESC")
     List<Long> getMessageByFolder(long folder);
 
+    @Query("SELECT id" +
+            " FROM message" +
+            " WHERE folder IN (:folders)" +
+            " AND NOT ui_hide" +
+            " ORDER BY message.received DESC")
+    List<Long> getMessageByFolders(List<Long> folders);
+
     @Query("SELECT *" +
             " FROM message" +
             " WHERE account = :account" +

app/src/main/java/eu/faircode/email/ViewModelBrowse.java

@@ -105,9 +105,10 @@ public class ViewModelBrowse extends ViewModel {
                 db.beginTransaction();
 
                 if (state.messages == null) {
-                    state.messages = new ArrayList<>();
+                    List<Long> fids = new ArrayList<>();
                     for (EntityFolder folder : folders)
-                        state.messages.addAll(db.message().getMessageByFolder(folder.id));
+                        fids.add(folder.id);
+                    state.messages = db.message().getMessageByFolders(fids);
                     Log.i("Messages=" + state.messages.size());
                 }