historypane.py 文件源码

def _reset_icon_cache(self, theme=None):
        self._app_icon_cache.clear()
        try:
            missing = self.icons.load_icon(Icons.MISSING_APP, self.ICON_SIZE,
                0)
        except GObject.GError:
            missing = None
        self._app_icon_cache[Icons.MISSING_APP] = missing