Merge pull request #7 from Vasak-OS/fix/application_random_close

fix: Se chequea ventana al cerrar

src/x11/X11WindowStatusManager.py

@@ -16,18 +16,17 @@ def __init__(self, window):
     # Connect the screen to the default event loop
     self.screen.connect("window-opened", self.windowOpened)
     self.screen.connect('window-closed', self.windowClosed)
-    self.emitSignal()
 
   def windowOpened(self, screen, window):
     windowType = window.get_window_type()
     if windowType == Wnck.WindowType.NORMAL:
       self.all_windows.append(window)
-    self.emitSignal()
-
+      self.emitSignal()
 
   def windowClosed(self, screen, window):
-    self.all_windows.remove(window)
-    self.emitSignal()
+    if window in self.all_windows:
+      self.all_windows.remove(window)
+      self.emitSignal()
 
   def emitSignal(self):
     windows = []