mr-legend_wiki/lib/plugins/bureaucracy/helper/fieldradio.php

<?php
/**
 * Class helper_plugin_bureaucracy_fieldselect
 *
 * Creates a dropdown list
 */
class helper_plugin_bureaucracy_fieldradio extends helper_plugin_bureaucracy_field {

    protected $mandatory_args = 3;

    /**
     * Arguments:
     *  - cmd
     *  - label
     *  - option1|option2|etc
     *  - ^ (optional)
     *
     * @param array $args The tokenized definition, only split at spaces
     */
    public function initialize($args) {
        $this->init($args);
        $this->opt['args'] = array_filter(array_map('trim', explode('|',array_shift($args))));
        $this->standardArgs($args);
    }

    /**
     * Render the field as XHTML
     *
     * Outputs the represented field using the passed Doku_Form object.
     * Additional parameters (CSS class & HTML name) are passed in $params.
     *
     * @params array     $params Additional HTML specific parameters
     * @params Doku_Form $form   The target Doku_Form object
     * @params int       $formid unique identifier of the form which contains this field
     */
    public function renderfield($params, Doku_Form $form, $formid) {
        $this->_handlePreload();
        if(!$form->_infieldset){
            $form->startFieldset('');
        }
        if ($this->error) {
            $params['class'] = 'bureaucracy_error';
        }
        $params = array_merge($this->opt, $params);

        list($name, $entries, $value, $label, $id, $class) = $this->_parse_tpl(
            array(
                '@@NAME@@',
                $params['args'],
                '@@VALUE@@',
                '@@DISPLAY@@',
                '@@ID@@',
                '@@CLASS@@'
            ),
            $params
        );

        $value = (in_array($value, $entries) ? $value : null);
        $valueoffieldwithid = ($value !== null ? $value : current($entries));
        // label
        $s = '<label';
        $s .= ' class="radiolabel '.$class.'"';
        $s .= '><span>' . $label . '</span>';
        $s .= '</label>';
        $form->addElement($s);

        // radio fields
        foreach($entries as $val) {
            if($value === $val) {
                $attrs = array('checked' => 'checked');
            } else {
                $attrs = array();
            }
            if($valueoffieldwithid === $val) {
                $_id = $id; //e.g. autofocus with 'focus__this' id
            } else {
                $_id = '';
            }
            $form->addElement(form_makeRadioField($name, $val, $val, $_id, $class, $attrs));
        }
    }
}