Account for fetched to display messages

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

@@ -39,7 +39,7 @@ public class BoundaryCallbackMessages extends PagedList.BoundaryCallback<TupleMe
     interface IBoundaryCallbackMessages {
         void onLoading();
 
-        void onLoaded();
+        void onLoaded(int fetched);
 
         void onError(Throwable ex);
     }
@@ -78,19 +78,22 @@ public class BoundaryCallbackMessages extends PagedList.BoundaryCallback<TupleMe
 
     private void load() {
         executor.submit(new Runnable() {
+            private int fetched;
+
             @Override
             public void run() {
                 if (model == null)
                     return;
 
                 try {
+                    fetched = 0;
                     handler.post(new Runnable() {
                         @Override
                         public void run() {
                             intf.onLoading();
                         }
                     });
-                    model.load();
+                    fetched = model.load();
                 } catch (final Throwable ex) {
                     Log.e("Boundary", ex);
                     handler.post(new Runnable() {
@@ -103,7 +106,7 @@ public class BoundaryCallbackMessages extends PagedList.BoundaryCallback<TupleMe
                     handler.post(new Runnable() {
                         @Override
                         public void run() {
-                            intf.onLoaded();
+                            intf.onLoaded(fetched);
                         }
                     });
                 }

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

@@ -1748,10 +1748,10 @@ public class FragmentMessages extends FragmentBase {
                             }
 
                             @Override
-                            public void onLoaded() {
+                            public void onLoaded(int fetched) {
                                 RecyclerView.Adapter adapter = rvMessage.getAdapter();
                                 int items = (adapter == null ? 0 : adapter.getItemCount());
-                                tvNoEmail.setVisibility(items == 0 ? View.VISIBLE : View.GONE);
+                                tvNoEmail.setVisibility(items + fetched == 0 ? View.VISIBLE : View.GONE);
                                 pbWait.setVisibility(View.GONE);
                             }
 

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

@@ -83,13 +83,14 @@ public class ViewModelBrowse extends ViewModel {
         currentState.error = false;
     }
 
-    void load() throws MessagingException, IOException {
+    int load() throws MessagingException, IOException {
         final State state = currentState;
         if (state == null || state.error)
-            return;
+            return 0;
 
         DB db = DB.getInstance(state.context);
 
+        int local = 0;
         if (state.search != null)
             try {
                 db.beginTransaction();
@@ -99,8 +100,7 @@ public class ViewModelBrowse extends ViewModel {
                     Log.i("Messages=" + state.messages.size());
                 }
 
-                int matched = 0;
-                for (int i = state.local; i < state.messages.size() && matched < state.pageSize; i++) {
+                for (int i = state.local; i < state.messages.size() && local < state.pageSize; i++) {
                     state.local = i + 1;
 
                     boolean match = false;
@@ -128,24 +128,26 @@ public class ViewModelBrowse extends ViewModel {
                     if (!match && message.content)
                         match = body.toLowerCase().contains(find);
 
-                    if (match)
+                    if (match) {
+                        local++;
                         db.message().setMessageFound(message.account, message.thread);
+                    }
                 }
 
                 db.setTransactionSuccessful();
 
-                if (++matched >= state.pageSize)
-                    return;
+                if (local == state.pageSize)
+                    return local;
             } finally {
                 db.endTransaction();
             }
 
         if (state.fid == null)
-            return;
+            return local;
 
         final EntityFolder folder = db.folder().getBrowsableFolder(state.fid, state.search != null);
         if (folder == null)
-            return;
+            return local;
 
         if (state.imessages == null) {
             EntityAccount account = db.account().getAccount(folder.account);
@@ -261,12 +263,12 @@ public class ViewModelBrowse extends ViewModel {
             }
         }
 
-        int count = 0;
-        while (state.index >= 0 && count < state.pageSize && currentState != null) {
+        int remote = 0;
+        while (state.index >= 0 && remote < state.pageSize && currentState != null) {
             Log.i("Boundary index=" + state.index);
-            int from = Math.max(0, state.index - (state.pageSize - count) + 1);
+            int from = Math.max(0, state.index - (state.pageSize - remote) + 1);
             Message[] isub = Arrays.copyOfRange(state.imessages, from, state.index + 1);
-            state.index -= (state.pageSize - count);
+            state.index -= (state.pageSize - remote);
 
             FetchProfile fp = new FetchProfile();
             fp.add(FetchProfile.Item.ENVELOPE);
@@ -291,7 +293,7 @@ public class ViewModelBrowse extends ViewModel {
                                     folder, state.ifolder, (IMAPMessage) isub[j],
                                     true,
                                     new ArrayList<EntityRule>());
-                            count++;
+                            remote++;
                         }
                         db.message().setMessageFound(message.account, message.thread);
                     } catch (MessageRemovedException ex) {
@@ -319,6 +321,7 @@ public class ViewModelBrowse extends ViewModel {
         }
 
         Log.i("Boundary done");
+        return local + remote;
     }
 
     void clear() {