fixes

app.py

@@ -276,7 +276,6 @@ if __name__ == "__main__":
         highlight_terms_state = gr.State([])
         num_results_state = gr.State(0)
         exact_search_state = gr.State(False)
-        lang_state = gr.State("")
         received_results_state = gr.State(0)
 
         with gr.Row():
@@ -344,7 +343,14 @@ if __name__ == "__main__":
             else:
                 query = " ".join(query.split())
             if query == "" or query is None:
-                return no_query_error_message()
+                return (
+                    [],
+                    [],
+                    0,
+                    False,
+                    no_query_error_message(),
+                    [],
+                )
 
             payload = request_payload(query, lang, exact_search, k, received_results)
             err = extract_error_from_payload(payload)
@@ -376,9 +382,6 @@ if __name__ == "__main__":
 
         def submit(query, lang, k, dropdown_input):
             print("submitting", query, lang, k)
-            response = run_query(query, lang, k, dropdown_input, 0)
-            if not isinstance(response, tuple):
-                return {result_page_html: response}
             (
                 processed_results,
                 highlight_terms,
@@ -386,17 +389,24 @@ if __name__ == "__main__":
                 exact_search,
                 result_page,
                 datasets,
-            ) = response
+            ) = run_query(query, lang, k, dropdown_input, 0)
             has_more_results = exact_search and (num_results > k)
+            current_results = (
+                len(next(iter(processed_results.values())))
+                if len(processed_results) > 0
+                else 0
+            )
             return [
                 processed_results,
                 highlight_terms,
                 num_results,
                 exact_search,
-                gr.update(visible=True),
+                gr.update(visible=True)
+                if current_results > 0
+                else gr.update(visible=False),
                 gr.Dropdown.update(choices=datasets, value=datasets),
                 gr.update(visible=has_more_results),
-                len(next(iter(processed_results.values()))),
+                current_results,
                 result_page,
             ]
 
@@ -408,9 +418,6 @@ if __name__ == "__main__":
             received_results,
             processed_results,
         ):
-            response = run_query(query, lang, k, dropdown_input, received_results)
-            if not isinstance(response, tuple):
-                return {result_page_html: response}
             (
                 processed_results,
                 highlight_terms,
@@ -418,7 +425,7 @@ if __name__ == "__main__":
                 exact_search,
                 result_page,
                 datasets,
-            ) = response
+            ) = run_query(query, lang, k, dropdown_input, received_results)
             current_results = sum(
                 len(results) for results in processed_results.values()
             )
@@ -433,7 +440,9 @@ if __name__ == "__main__":
                 highlight_terms,
                 num_results,
                 exact_search,
-                gr.update(visible=True),
+                gr.update(visible=True)
+                if current_results > 0
+                else gr.update(visible=False),
                 gr.Dropdown.update(choices=datasets, value=datasets),
                 gr.update(visible=current_results >= k and has_more_results),
                 received_results + current_results,