file upload gallery

app.py

@@ -288,6 +288,7 @@ def save_uploaded_file(directory, img_file):
 def delete_directory(dir_path):
     try:
         shutil.rmtree(dir_path)
+        st.session_state['input_list'] = []
         st.success(f"Deleted previously uploaded images, making room for new images: {dir_path}")
     except OSError as e:
         st.error(f"Error: {dir_path} : {e.strerror}")
@@ -1091,10 +1092,8 @@ def content_tab_settings():
         if uploaded_files:
             # Clear input image gallery and input list
             delete_directory(st.session_state['dir_uploaded_images'])
-            st.session_state['input_list'] = []
             st.session_state['dir_uploaded_images'] = os.path.join(st.session_state.dir_home,'uploads')
             validate_dir(st.session_state['dir_uploaded_images'])
-
             # Process the new iamges
             for uploaded_file in uploaded_files:
                 print(uploaded_file)
@@ -1102,9 +1101,10 @@ def content_tab_settings():
                 save_uploaded_file(st.session_state['dir_uploaded_images'], uploaded_file)
 
     with col_local_2:
-        st.subheader('Image Gallery')
-        selected_img = image_select("Uploaded Images Ready for Transcription", st.session_state['input_list'], use_container_width=False)
-        st.button("Clear Staged Images",on_click=delete_directory, args=[st.session_state['dir_uploaded_images']])
+        if st.session_state['input_list']:
+            st.subheader('Image Gallery')
+            selected_img = image_select("Uploaded Images Ready for Transcription", st.session_state['input_list'], use_container_width=False)
+            st.button("Clear Staged Images",on_click=delete_directory, args=[st.session_state['dir_uploaded_images']])
         
     with col_cropped_1:
         default_crops = st.session_state.config['leafmachine']['cropped_components'].get('save_cropped_annotations', ['leaf_whole'])