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

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

    protected $data = array
    (
        'name'  => '',
        'class' => 'dropdown',
    );

    protected $protect = array('type');

    // Precision for the parts, you can use @ to insert a literal @ symbol
    protected $parts = array
    (
        'month'   => array(),
        'day'     => array(1),
        'year'    => array(),
        ' @ ',
        'hour'    => array(),
        ':',
        'minute'  => array(5),
        'am_pm'   => array(),
    );

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

        // Default to the current time
        $this->data['value'] = time();
    }

    public function __call($method, $args)
    {
        if (isset($this->parts[substr($method, 0, -1)]))
        {
            // Set options for date generation
            $this->parts[substr($method, 0, -1)] = $args;
            return $this;
        }

        return parent::__call($method, $args);
    }

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

        // Get the options and default selection
        $time = $this->time_array(arr::remove('value', $data));

        // No labels or values
        unset($data['label']);

        $input = '';
        foreach ($this->parts as $type => $val)
        {
            if (is_int($type))
            {
                // Just add the separators
                $input .= $val;
                continue;
            }

            // Set this input name
            $data['name'] = $this->data['name'].'['.$type.']';

            // Set the selected option
            $selected = $time[$type];

            if ($type == 'am_pm')
            {
                // Options are static
                $options = array('AM' => 'AM', 'PM' => 'PM');
            }
            else
            {
                // minute(s), hour(s), etc
                $type .= 's';

                // Use the date helper to generate the options
                $options = empty($val) ? date::$type() : call_user_func_array(array('date', $type), $val);
            }

            $input .= form::dropdown($data, $options, $selected);
        }

        return $input;
    }

    protected function time_array($timestamp)
    {
        $time = array_combine
        (
            array('month', 'day', 'year', 'hour', 'minute', 'am_pm'), 
            explode('--', date('n--j--Y--g--i--A', $timestamp))
        );

        // Minutes should always be in 5 minute increments
        $time['minute'] = num::round($time['minute'], current($this->parts['minute']));

        return $time;
    }

    protected function load_value()
    {
        if (is_bool($this->valid))
            return;

        $time = $this->input_value($this->name);

        // Make sure all the required inputs keys are set
        $time += $this->time_array(time());

        $this->data['value'] = mktime
        (
            date::adjust($time['hour'], $time['am_pm']),
            $time['minute'],
            0,
            $time['month'],
            $time['day'],
            $time['year']
        );
    }

} // End Form Dateselect