Update Gradio_UI.py

Gradio_UI.py

@@ -276,7 +276,7 @@ class GradioUI:
             )
     
             if self.file_upload_folder is not None:
-                upload_file = gr.File(label="Upload a file")
+                upload_file = gr.File(label="Upload PDF or Doc", file_types=['.pdf', '.docx', '.txt'])
                 upload_status = gr.Textbox(label="Upload Status", interactive=False, visible=True)
                 upload_file.change(
                     self.upload_file,
@@ -284,15 +284,15 @@ class GradioUI:
                     [upload_status, file_uploads_log],
                 )
     
-            text_input = gr.Textbox(lines=1, label="Chat Message")
+            text_input = gr.Textbox(lines=1, label="Chat Message", placeholder="Ask your question here...")
     
-            # On submit, first log message with uploaded files, then send to agent for reply
             def on_submit(text, files_log):
-                # Append uploaded file info to text prompt
+                if not text.strip():
+                    return gr.update(value="Please enter a question before submitting."), ""
                 combined_prompt = (
                     text
                     + (
-                        f"\nYou have been provided with these files, which might be helpful or not: {files_log}"
+                        f"\n\nI have the following files you can use: {files_log}"
                         if len(files_log) > 0
                         else ""
                     )
@@ -313,4 +313,5 @@ class GradioUI:
 
 
 
+
 __all__ = ["stream_to_gradio", "GradioUI"]