OptionGroupUI.java 文件源码

/**
 * Builds the JTree which represents the navigation menu and then
 * returns it
 *
 * @param group The {@code OptionGroup} to build from.
 * @param parent The tree to build onto.
 */
private void buildTree(OptionGroup group, DefaultMutableTreeNode parent) {
    for (Option option : group.getOptions()) {
        if (option instanceof OptionGroup) {
            if (!((OptionGroup)option).isVisible()) continue;
            DefaultMutableTreeNode branch
                = new DefaultMutableTreeNode(option);
            parent.add(branch);
            buildTree((OptionGroup) option, branch);
        }
    }
}