Update app.py

app.py

@@ -465,8 +465,8 @@ async def process_text_with_progress(
 ):
     # Input validation
     if not text or text.strip() == "":
-        # Return None for file/audio outputs, and a string for error_output and download_link
-        return None, None, None, "Please enter some text to convert to speech.", ""
+        # Return None for file/audio outputs, and use gr.update for error_output and download_link
+        return None, None, None, gr.update(value="Please enter some text to convert to speech.", visible=True), gr.update(value="", visible=False)
     
     # Format pitch and rate strings
     pitch_str = f"{pitch:+d}Hz" if pitch != 0 else "+0Hz"
@@ -490,14 +490,14 @@ async def process_text_with_progress(
             parallel=parallel_processing
         )
         
-        # If successful, return results and an empty string for error_output
-        return srt_path, audio_path, audio_path, "", create_download_link(audio_path)
+        # If successful, return results and hide error_output, show download_link
+        return srt_path, audio_path, audio_path, gr.update(value="", visible=False), gr.update(value=create_download_link(audio_path), visible=True)
     except TTSError as e:
-        # Return None for file/audio outputs, and specific TTS error message as string for error_output and download_link
-        return None, None, None, f"TTS Error: {str(e)}", ""
+        # Return None for file/audio outputs, show error_output, hide download_link
+        return None, None, None, gr.update(value=f"TTS Error: {str(e)}", visible=True), gr.update(value="", visible=False)
     except Exception as e:
-        # Return None for file/audio outputs, and any other error message as string for error_output and download_link
-        return None, None, None, f"Unexpected error: {str(e)}", ""
+        # Return None for file/audio outputs, show error_output, hide download_link
+        return None, None, None, gr.update(value=f"Unexpected error: {str(e)}", visible=True), gr.update(value="", visible=False)
 
 # Voice options dictionary
 voice_options = {
@@ -605,8 +605,8 @@ with gr.Blocks(title="Advanced TTS with Configurable SRT Generation") as app:
     submit_btn = gr.Button("Generate Audio & Subtitles")
     
     # Add error message component
-    # Changed to always visible, and will display messages or be empty
-    error_output = gr.Textbox(label="Status", interactive=False) 
+    # Initialize error_output as hidden, and it will be shown/hidden via gr.update
+    error_output = gr.Textbox(label="Status", interactive=False, visible=False) 
     
     with gr.Row():
         with gr.Column():
@@ -616,7 +616,8 @@ with gr.Blocks(title="Advanced TTS with Configurable SRT Generation") as app:
             # The download_link HTML component will contain an <a> tag with target="_blank"
             # This ensures that when the generated audio/SRT is downloaded via this link,
             # it will open in a new browser tab.
-            download_link = gr.HTML(elem_classes="download-btn")
+            # Initialize download_link as hidden, and it will be shown/hidden via gr.update
+            download_link = gr.HTML(elem_classes="download-btn", visible=False)
             # The audio_file component is typically for direct download via Gradio's file handling,
             # which might not open a new tab depending on browser settings.
             # The HTML download_link provides more control over opening in a new tab.