Update app2.py

app2.py

@@ -67,20 +67,30 @@ def toggle_settings(event):
 
 button4.param.watch(toggle_settings, 'value')
 
-# Variable to store the content of main_panel
-main_panel_content = None
+# Dictionary to store the previous content of main_panel and main_panel_button3
+previous_content = {}
 
 # Function to reset the main panel content to the initial content and store the previous content
 def reset_main_panel(event):
-    print(main_body_instance.main_body, flush = True)
+    global previous_content
+    # Store the previous content of main_panel if it's not already stored
+    if 'main_panel' not in previous_content:
+        previous_content['main_panel'] = main_body_instance.main_body.copy()
+
     # 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(main_body_instance.main_body)
+    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):
-    main_body_instance.main_body.clear()  # Clear the existing main panel content if you want to replace it
+    global previous_content
+    # Store the previous content of main_panel_button3 if it's not already stored
+    if 'main_panel_button3' not in previous_content:
+        previous_content['main_panel_button3'] = main_body_instance.main_body.copy()
+
+    # Reset the main panel to the desired content when button3 is pressed
+    main_body_instance.main_body.clear()  # Clear the existing main panel content
     main_body_instance.main_body.append(pn.pane.Markdown("You pressed button3!"))
     main_body_instance.param.trigger('main_body')  # Trigger the update manually
 
@@ -88,6 +98,23 @@ def update_main_panel_button3(event):
 button1.on_click(reset_main_panel)
 button3.on_click(update_main_panel_button3)
 
+# Function to check if there's previous content and display it, otherwise show a default message
+def show_previous_content(event):
+    global previous_content
+    # Check if there's previous content for the button being pressed
+    if event.obj.name in previous_content:
+        main_body_instance.main_body.clear()  # Clear the existing main panel content
+        main_body_instance.main_body.extend(previous_content[event.obj.name])  # Add the previous content
+        main_body_instance.param.trigger('main_body')  # Trigger the update manually
+    else:
+        main_body_instance.main_body.clear()  # Clear the existing main panel content
+        main_body_instance.main_body.append(pn.pane.Markdown("No previous content available!"))
+        main_body_instance.param.trigger('main_body')  # Trigger the update manually
+
+# Attach the show_previous_content function to the on_click event of button1 and button3
+button1.on_click(show_previous_content)
+button3.on_click(show_previous_content)
+
 # List to store the entered options
 loaded_dict = TLDR.load_categories()