RFXComponent.java 文件源码

private Stage getStage(Window window) {
    if (window instanceof Stage) {
        return (Stage) window;
    }
    if (window instanceof PopupWindow) {
        Node ownerNode = ((PopupWindow) window).getOwnerNode();
        ownerNode.getScene().getWindow();
        return getStage(ownerNode.getScene().getWindow());
    }
    return null;
}