Dont pop down the palette when a submenu opens

src/sugar/graphics/palette.py

@@ -547,6 +547,7 @@ class Palette(gtk.Window):
         self.move(position.x, position.y)
 
     def popup(self, immediate=False):
+        logging.debug('Palette.popup immediate %r' % immediate)
         if self._invoker is not None:
             self._update_full_request()
             self._alignment = self._invoker.get_alignment(self._full_request)
@@ -563,6 +564,7 @@ class Palette(gtk.Window):
         self._secondary_anim.start()
 
     def popdown(self, immediate=False):
+        logging.debug('Palette.popdown immediate %r' % immediate)
         self._popup_anim.stop()
 
         self._mouse_detector.stop()
@@ -625,12 +627,14 @@ class Palette(gtk.Window):
         self.show()
 
     def __enter_notify_event_cb(self, widget, event):
-        if event.detail != gtk.gdk.NOTIFY_INFERIOR:
+        if event.detail != gtk.gdk.NOTIFY_INFERIOR and \
+                event.mode == gtk.gdk.CROSSING_NORMAL:
             self._popdown_anim.stop()
             self._secondary_anim.start()
 
     def __leave_notify_event_cb(self, widget, event):
-        if event.detail != gtk.gdk.NOTIFY_INFERIOR:
+        if event.detail != gtk.gdk.NOTIFY_INFERIOR and \
+                event.mode == gtk.gdk.CROSSING_NORMAL:
             self.popdown()
 
     def __show_cb(self, widget):
@@ -642,6 +646,7 @@ class Palette(gtk.Window):
         self.emit('popup')
 
     def __hide_cb(self, widget):
+        logging.debug('__hide_cb')
         self.menu.set_active(False)
 
         self._secondary_anim.stop()