Update app.py

app.py

@@ -99,16 +99,15 @@ with gr.Blocks() as demo:
         ]
     )
 
-    # Chat transcript on top
+    # Chat transcript at the top
     transcript = gr.Chatbot(label="Transcript", type="messages")
 
-    # Lower row with text input and audio input side by side
+    # Lower row: text input and audio input side by side
     with gr.Row():
         with gr.Column(scale=1):
             text_input = gr.Textbox(
-                placeholder="Type your message here...", label="Your Message"
+                placeholder="Type your message here and press Enter...", label="Your Message"
             )
-            send_button = gr.Button("Send")
         with gr.Column(scale=1):
             audio = WebRTC(
                 rtc_configuration=rtc_configuration,
@@ -131,14 +130,14 @@ with gr.Blocks() as demo:
         show_progress="hidden",
     )
 
-    # Text input: process the typed message when "Send" is clicked.
-    send_button.click(
+    # Text input: submit callback when pressing Enter.
+    text_input.submit(
         respond_text,
         inputs=[text_input, transformers_chat, transcript],
         outputs=[transformers_chat, transcript],
     )
-    # Clear text input after sending.
-    send_button.click(lambda: "", inputs=[], outputs=[text_input])
+    # Clear text input after submission.
+    text_input.submit(lambda: "", inputs=[], outputs=[text_input])
 
 if __name__ == "__main__":
     demo.launch()