root/trunk/modules/forge/libraries/Form_Checklist.php

<?php defined('SYSPATH') or die('No direct script access.');
/**
 * FORGE checklist input library.
 *
 * $Id$
 *
 * @package    Forge
 * @author     Kohana Team
 * @copyright  (c) 2007-2008 Kohana Team
 * @license    http://kohanaphp.com/license.html
 */
class Form_Checklist_Core extends Form_Input {

    protected $data = array
    (
        'name'    => '',
        'type'    => 'checkbox',
        'class'   => 'checklist',
        'options' => array(),
    );

    protected $protect = array('name', 'type');

    public function __construct($name)
    {
        $this->data['name'] = $name;
    }

    public function __get($key)
    {
        if ($key == 'value')
        {
            // Return the currently checked values
            $array = array();
            foreach ($this->data['options'] as $id => $opt)
            {
                // Return the options that are checked
                ($opt[1] === TRUE) and $array[] = $id;
            }
            return $array;
        }

        return parent::__get($key);
    }

    public function render()
    {
        // Import base data
        $base_data = $this->data;

        // Make it an array
        $base_data['name'] .= '[]';

        // Newline
        $nl = "\n";

        $checklist = '<ul class="'.arr::remove('class', $base_data).'">'.$nl;
        foreach (arr::remove('options', $base_data) as $val => $opt)
        {
            // New set of input data
            $data = $base_data;

            // Get the title and checked status
            list ($title, $checked) = $opt;

            // Set the name, value, and checked status
            $data['value']   = $val;
            $data['checked'] = $checked;

            $checklist .= '<li><label>'.form::checkbox($data).' '.$title.'</label></li>'.$nl;
        }
        $checklist .= '</ul>';

        return $checklist;
    }

    protected function load_value()
    {
        foreach ($this->data['options'] as $val => $checked)
        {
            if ($input = $this->input_value($this->data['name']))
            {
                $this->data['options'][$val][1] = in_array($val, $input);
            }
            else
            {
                $this->data['options'][$val][1] = FALSE;
            }
        }
    }

} // End Form Checklist