Update app2.py

app2.py

@@ -67,33 +67,23 @@ def toggle_settings(event):
 
 button4.param.watch(toggle_settings, 'value')
 
-# Variable to store the content of main_panel
-main_panel_content = None
-
-# Function to reset the main panel content to the initial content
+# Function to reset the main panel content to the initial content and store the previous content
 def reset_main_panel(event):
     global main_panel_content
-    main_panel_content = None  # Clear the stored content
+    if main_panel_content is None:
+        # Store the initial content of main_panel if it's not already stored
+        main_panel_content = main_body_instance.main_body
+    
+    # Reset the main panel to the initial state
     main_body_instance.main_body.clear()  # Clear the existing main panel content
     main_body_instance.main_body.append(pn.pane.LaTeX("Please select some tags!", styles={'font-size': '20pt'}))
     main_body_instance.param.trigger('main_body')  # Trigger the update manually
 
 # Function to update the main panel content when button3 is pressed
 def update_main_panel_button3(event):
-    global main_panel_content
-    print(main_panel_content, flush = True)
-    if main_panel_content is not None:
-        # Restore the content of main_panel if it's not empty
-        main_body_instance.main_body = main_panel_content
-        main_body_instance.param.trigger('main_body')  # Trigger the update manually
-    else:
-        # If main_panel_content is empty, add new content
-        main_body_instance.main_body.clear()  # Clear the existing main panel content if you want to replace it
-        main_body_instance.main_body.append(pn.pane.Markdown("You pressed button3!"))
-        main_body_instance.param.trigger('main_body')  # Trigger the update manually
-
-        # Store the content of main_panel
-        main_panel_content = main_body_instance.main_body
+    main_body_instance.main_body.clear()  # Clear the existing main panel content if you want to replace it
+    main_body_instance.main_body.append(pn.pane.Markdown("You pressed button3!"))
+    main_body_instance.param.trigger('main_body')  # Trigger the update manually
 
 # Attach the functions to the on_click event of button1 and button3
 button1.on_click(reset_main_panel)