actionManager.enable("select-all", existsAPosition && !allPositionsSelected);
findMenu(r.getFrame().getJMenuBar(), "position", "complete").setEnabled(existsASelectedPosition);
actionManager.enable("add-coordinates", existsASelectedPosition);
actionManager.enable("add-elevation", existsASelectedPosition);
actionManager.enable("add-postal-address", existsASelectedPosition);
actionManager.enable("add-populated-place", existsASelectedPosition);
actionManager.enable("add-speed", existsASelectedPosition);
actionManager.enable("add-time", existsASelectedPosition);
actionManager.enable("add-number", existsASelectedPosition);
actionManager.enable("split-positionlist", supportsMultipleRoutes && existsASelectedPosition);
actionManager.enable("insert-positions", existsAPosition);