better UI

app.py

@@ -173,6 +173,7 @@ def run_fn(
     min_dist=0.1,
 ):
     if images is None:
+        gr.Warning("No images selected.")
         return [], "No images selected."
     
     kwargs = {
@@ -248,20 +249,13 @@ with gr.Blocks() as demo:
             logging_text = gr.Textbox("Logging information", label="Logging", elem_id="logging", type="text", placeholder="Logging information")
             
     def load_default_images():
-        return default_images, default_outputs, example_items
+        return default_images, default_outputs
 
     def empty_input_and_output():
-        return [], [], example_items
+        return [], []
     
-    def hide_example_gallery(images):
-        if images is None:
-            return 
-        
-        # hide the example gallery, use css to hide
-        
-    
-    load_images_button.click(load_default_images, outputs=[input_gallery, output_gallery, example_gallery])
-    clear_images_button.click(empty_input_and_output, outputs=[input_gallery, output_gallery, example_gallery])
+    load_images_button.click(load_default_images, outputs=[input_gallery, output_gallery])
+    clear_images_button.click(empty_input_and_output, outputs=[input_gallery, output_gallery])
     submit_button.click(
         run_fn,
         inputs=[