Update UI with dynamic + button for adding combinations

app.py

@@ -443,8 +443,9 @@ with gr.Blocks(title="UniCalli - Chinese Calligraphy Generator / 中国书法生
                 max_lines=1
             )
             
-            gr.Markdown("### 👤 书法家与字体组合 / Calligraphers & Fonts (最多4组 / Up to 4)")
+            gr.Markdown("### 👤 书法家与字体组合 / Calligraphers & Fonts")
             
+            combo_groups = []
             author_dropdowns = []
             font_dropdowns = []
             
@@ -456,9 +457,11 @@ with gr.Blocks(title="UniCalli - Chinese Calligraphy Generator / 中国书法生
             else:
                 default_font = initial_font_choices[0] if initial_font_choices else "草 (Cursive Script)"
             
+            active_count_state = gr.State(value=1)
+            
             for i in range(4):
-                with gr.Group():
-                    gr.Markdown(f"**组合 {i+1} / Combination {i+1}** (不填则忽略 / Leave blank to ignore)")
+                with gr.Group(visible=(i == 0)) as group:
+                    gr.Markdown(f"**组合 {i+1} / Combination {i+1}**")
                     with gr.Row():
                         a_drop = gr.Dropdown(
                             label=f"书法家 / Calligrapher",
@@ -472,6 +475,10 @@ with gr.Blocks(title="UniCalli - Chinese Calligraphy Generator / 中国书法生
                         )
                         author_dropdowns.append(a_drop)
                         font_dropdowns.append(f_drop)
+                combo_groups.append(group)
+            
+            add_combo_btn = gr.Button("➕ 添加书法家与风格组合 / Add Combination", size="sm")
+
             
             gr.Markdown("### ⚙️ 生成设置 / Generation Settings")
             
@@ -549,6 +556,20 @@ with gr.Blocks(title="UniCalli - Chinese Calligraphy Generator / 中国书法生
             inputs=[author_dropdowns[i]],
             outputs=[font_dropdowns[i]]
         )
+        
+    def add_combo(current_count):
+        new_count = min(current_count + 1, 4)
+        updates = []
+        for i in range(4):
+            updates.append(gr.update(visible=(i < new_count)))
+        updates.append(gr.update(interactive=(new_count < 4)))
+        return [new_count] + updates
+
+    add_combo_btn.click(
+        fn=add_combo,
+        inputs=[active_count_state],
+        outputs=[active_count_state] + combo_groups + [add_combo_btn]
+    )
     
     # Prepare inputs list for the interactive session
     session_inputs = [text_input]