Regenerate (#26)

* Update app.py

* Update base.py

* Update app.py

* Update app.py

* Update app.py

* Update app.py

* Update app.py

* Update app.py

* Update app.py

* Update app.py

Author: ypwhs

app.py

@@ -33,16 +33,29 @@ def revise(history, latest_message):
     return history, ''
 
 
-def revoke(history):
+def revoke(history, last_state):
     if len(history) >= 1:
         history.pop()
+    last_state[0] = history
+    last_state[1] = ''
+    last_state[2] = ''
     return history
 
 
 def interrupt(allow_generate):
     allow_generate[0] = False
 
 
+def regenerate(last_state, max_length, top_p, temperature, allow_generate):
+    history, query, continue_message = last_state
+    if len(query) == 0:
+        print("Please input a query first.")
+        return
+    for x in predictor.predict_continue(query, continue_message, max_length, top_p,
+                                        temperature, allow_generate, history, last_state):
+        yield x
+
+
 # 搭建 UI 界面
 with gr.Blocks(css=""".message {
     width: inherit !important;
@@ -61,7 +74,7 @@ def interrupt(allow_generate):
 """)
     with gr.Row():
         with gr.Column(scale=4):
-            chatbot = gr.Chatbot(elem_id="chat-box", show_label=False).style(height=800)
+            chatbot = gr.Chatbot(elem_id="chat-box", show_label=False).style(height=850)
         with gr.Column(scale=1):
             with gr.Row():
                 max_length = gr.Slider(32, 4096, value=2048, step=1.0, label="Maximum length", interactive=True)
@@ -78,21 +91,26 @@ def interrupt(allow_generate):
                     show_label=False, placeholder="Revise message", lines=2).style(container=False)
                 revise_btn = gr.Button("修订")
                 revoke_btn = gr.Button("撤回")
+                regenerate_btn = gr.Button("重新生成")
                 interrupt_btn = gr.Button("终止生成")
 
     history = gr.State([])
     allow_generate = gr.State([True])
     blank_input = gr.State("")
+    last_state = gr.State([[], '', ''])  # history, query, continue_message
     generate_button.click(
         predictor.predict_continue,
-        inputs=[query, blank_input, max_length, top_p, temperature, allow_generate, history],
+        inputs=[query, blank_input, max_length, top_p, temperature, allow_generate, history, last_state],
         outputs=[chatbot, query])
     revise_btn.click(revise, inputs=[history, revise_message], outputs=[chatbot, revise_message])
-    revoke_btn.click(revoke, inputs=[history], outputs=[chatbot])
+    revoke_btn.click(revoke, inputs=[history, last_state], outputs=[chatbot])
     continue_btn.click(
         predictor.predict_continue,
-        inputs=[query, continue_message, max_length, top_p, temperature, allow_generate, history],
+        inputs=[query, continue_message, max_length, top_p, temperature, allow_generate, history, last_state],
         outputs=[chatbot, query, continue_message])
+    regenerate_btn.click(regenerate, inputs=[last_state, max_length, top_p, temperature, allow_generate],
+                         outputs=[chatbot, query, continue_message])
     interrupt_btn.click(interrupt, inputs=[allow_generate])
+
 demo.queue(concurrency_count=4).launch(server_name='0.0.0.0', server_port=7860, share=False, inbrowser=False)
 demo.close()

predictors/base.py

@@ -1,3 +1,4 @@
+import copy
 from abc import ABC, abstractmethod
 
 
@@ -27,8 +28,11 @@ def stream_chat_continue(self, *args, **kwargs):
         raise NotImplementedError
 
     def predict_continue(self, query, latest_message, max_length, top_p,
-                         temperature, allow_generate, history, *args,
+                         temperature, allow_generate, history, last_state, *args,
                          **kwargs):
+        last_state[0] = copy.deepcopy(history)
+        last_state[1] = query
+        last_state[2] = latest_message
         if history is None:
             history = []
         allow_generate[0] = True