chat: run GUI in a separate process

MAVProxy/modules/mavproxy_chat/chat_window.py

@@ -5,6 +5,7 @@
 Chat window for input and output of AI chat
 '''
 
+from MAVProxy.modules.lib import multiproc
 from MAVProxy.modules.lib.wx_loader import wx
 from MAVProxy.modules.mavproxy_chat import chat_openai, chat_voice_to_text
 from threading import Thread, Lock
@@ -17,6 +18,11 @@ def __init__(self, mpstate):
         # lock to prevent multiple threads sending text to the assistant at the same time
         self.send_lock = Lock()
 
+        self.child = multiproc.Process(target=self.child_task)
+        self.child.start()
+
+    def child_task(self):
+        '''child process - this holds all the GUI elements'''
         self.app = wx.App()
         self.frame = wx.Frame(None, title="Chat", size=(650, 200))
 
@@ -72,13 +78,7 @@ def __init__(self, mpstate):
         # create chat_voice_to_text object
         self.chat_voice_to_text = chat_voice_to_text.chat_voice_to_text()
 
-        # run chat window in a separate thread
-        self.thread = Thread(target=self.idle_task)
-        self.thread.start()
-
-    # update function rapidly called by mavproxy
-    def idle_task(self):
-        # update chat window
+        # run the GUI event loop
         self.app.MainLoop()
 
     # show the chat window