<?php
/*
 You may not change or alter any portion of this comment or credits
 of supporting developers from this source code or any supporting source code 
 which is considered copyrighted (c) material of the original comment or credit authors.
 
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*/

/**
 * XOOPS form radio compo
 *
 * @copyright   The XOOPS project http://www.xoops.org/
 * @license     http://www.fsf.org/copyleft/gpl.html GNU public license
 * @package     kernel
 * @since       2.0
 * @author      Kazumi Ono (AKA onokazu) http://www.myweb.ne.jp/, http://www.xoops.org/, http://jp.xoops.org/
 * @author      Taiwen Jiang <phppp@users.sourceforge.net>
 * @version     $Id: formradio.php 2645 2009-01-10 06:37:38Z phppp $
 * @package     kernel
 * @subpackage  form
 * @todo        template
 */
if (!defined('XOOPS_ROOT_PATH')) {
    die("XOOPS root path not defined");
}

class XoopsFormRadio extends XoopsFormElement {

    /**
     * Array of Options
     * @var    array    
     * @access    private
     */
    var $_options = array();

    /**
     * Pre-selected value
     * @var    string    
     * @access    private
     */
    var $_value = null;

    /**
     * HTML to seperate the elements
     * @var    string  
     * @access  private
     */
    var $_delimeter;

    /**
     * Column number for rendering
     * @var        int  
     * @access  public
     */
    var $columns;

    /**
     * Constructor
     * 
     * @param    string    $caption    Caption
     * @param    string    $name        "name" attribute
     * @param    string    $value        Pre-selected value
     */
    function XoopsFormRadio($caption, $name, $value = null, $delimeter = "&nbsp;"){
        $this->setCaption($caption);
        $this->setName($name);
        if (isset($value)) {
            $this->setValue($value);
        }
        $this->_delimeter = $delimeter;
    }

    /**
     * Get the "value" attribute
     * 
     * @param    bool    $encode To sanitizer the text?
     * @return    string
     */
    function getValue($encode = false) {
        return ( $encode && $this->_value !== null ) ? htmlspecialchars($this->_value, ENT_QUOTES) : $this->_value;
    }

    /**
     * Set the pre-selected value
     * 
     * @param    $value    string
     */
    function setValue($value){
        $this->_value = $value;
    }

    /**
     * Add an option
     * 
     * @param    string    $value    "value" attribute - This gets submitted as form-data.
     * @param    string    $name    "name" attribute - This is displayed. If empty, we use the "value" instead.
     */
    function addOption($value, $name = "") {
        if ( $name != "" ) {
            $this->_options[$value] = $name;
        } else {
            $this->_options[$value] = $value;
        }
    }

    /**
     * Adds multiple options
     * 
     * @param    array    $options    Associative array of value->name pairs.
     */
    function addOptionArray($options){
        if ( is_array($options) ) {
            foreach ( $options as $k => $v ) {
                $this->addOption($k, $v);
            }
        }
    }

    /**
     * Get an array with all the options
     *
     * @param    int     $encode     To sanitizer the text? potential values: 0 - skip; 1 - only for value; 2 - for both value and name
     * @return    array   Associative array of value->name pairs
     */
    function getOptions($encode = false) {
        if (!$encode) {
            return $this->_options;
        }
        $value = array();
        foreach ($this->_options as $val => $name) {
            $value[ $encode ? htmlspecialchars($val, ENT_QUOTES) : $val ] = ($encode > 1) ? htmlspecialchars($name, ENT_QUOTES) : $name;
        }
        return $value;
    }

    /**
     * Get the delimiter of this group
     * 
     * @param    bool    $encode To sanitizer the text?
     * @return    string  The delimiter
     */
    function getDelimeter($encode = false) {
        return $encode ? htmlspecialchars(str_replace('&nbsp;', ' ', $this->_delimeter)) : $this->_delimeter;
    }

    /**
     * Prepare HTML for output
     * 
     * @return    string    HTML
     */
    function render() {
        $ret = "";
        $ele_name = $this->getName();
        $ele_value = $this->getValue();
        $ele_options = $this->getOptions();
        $ele_extra = $this->getExtra();
        $ele_delimeter = empty($this->columns) ? $this->getDelimeter() : "";
        if (!empty($this->columns)) {
            $ret .= "<table><tr>";
        }
        $i = 0;
        foreach ( $ele_options as $value => $name ) {
            if (!empty($this->columns)) {
                if ($i % $this->columns == 0) {
                    $ret .= "<tr>";
                }
                $ret .= "<td>";
            }
            $ret .= "<input type='radio' name='".$ele_name."' value='".htmlspecialchars($value, ENT_QUOTES)."'";
            if ( isset($ele_value) && $value == $ele_value ) {
                $ret .= " checked='checked'";
            }
            $ret .= $ele_extra . " />". $name . $ele_delimeter . "\n";
            if (!empty($this->columns)) {
                $ret .= "</td>";
                if (++$i % $this->columns == 0) {
                    $ret .= "</tr>";
                }
            }
        }
        if (!empty($this->columns)) {
            if ($span = $i % $this->columns) {
                $ret .= "<td colspan='" . ( $this->columns - $span ) . "'></td></tr>";
            }
            $ret .= "</table>";
        }
        return $ret;
    }
}
?>