added reference answer toggle

utils/ui_helpers.py

@@ -27,6 +27,29 @@ def toggle_context_display(example, current_state):
     # Return the values as list in the expected order, not as a dictionary
     return new_state, gr.update(value=context_html), gr.update(value=button_text, elem_classes=elem_classes)
 
+def toggle_reference_answer(current_state, example):
+    """
+    Toggle reference answer visibility - exactly like FAQ toggle.
+    """
+    new_state = not current_state
+    
+    # Button text with arrow icons (exactly like FAQ)
+    button_text = "▼ Hide Reference Answer" if new_state else "▶ Show Reference Answer"
+    
+    # Get reference answer only when expanding
+    reference_answer = ""
+    if new_state and isinstance(example, dict):
+        reference_answer = example.get('answer', '')
+        if not reference_answer or reference_answer.strip() == '':
+            reference_answer = "No reference answer available for this question."
+    
+    return (
+        new_state, 
+        gr.update(visible=new_state), 
+        gr.update(value=button_text), 
+        gr.update(value=reference_answer)
+    )
+
 def update_feedback(choice):
     """Updates the feedback list state when checkbox selections change."""
     # Return the value directly, not as a dictionary