From 519aafc8ea5fa754f2d79a87460db84086eb8481 Mon Sep 17 00:00:00 2001
From: ototadana <ototadana@gmail.com>
Date: Sat, 4 Jun 2022 12:48:08 +0900
Subject: [PATCH] implement graceful shutdown

---
 gui.py | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/gui.py b/gui.py
index 2cdde72..0e4966a 100644
--- a/gui.py
+++ b/gui.py
@@ -24,6 +24,7 @@
 class Info:
     def __init__(self):
         self.__state = {}
+        self.__is_active = True
 
     def set_states(self, states):
         self.__state = states
@@ -34,12 +35,18 @@ def get_states(self):
     def get_state(self, name):
         return self.__state.get(name, 0.0)
 
+    def is_active(self):
+        return self.__is_active
+
+    def stop(self):
+        self.__is_active = False
+
 
 info = Info()
 
 
 def receive_state():
-    while True:
+    while info.is_active():
         time.sleep(1)
         try:
             info.set_states({"bat": random.random() * 100})
@@ -71,4 +78,5 @@ def receive_state():
     window["sent"].update(msg)
     window["recv"].update("ok")
 
+info.stop()
 window.close()