ComponentUtils.java 文件源码

private void showPopupPanel() {
    if (mPopup == null)
        mPopup = new ComponentUtils.ModalPopup(this);

    PopupPanel panel = this.getPanel().orElse(null);
    if (panel == null)
        return;

    mPopup.removeAll();
    panel.onShow();

    for (ComponentListener cl : panel.getComponentListeners())
        panel.removeComponentListener(cl);

    panel.addComponentListener(new ComponentAdapter() {
        @Override
        public void componentHidden(ComponentEvent e) {
            mPopup.close();
        }
    });
    mPopup.add(panel);
    mPopup.showPopup();
}