<?php
/**
 * @package     Joomla.Platform
 * @subpackage  Form
 *
 * @copyright   Copyright (C) 2005 - 2011 Open Source Matters, Inc. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE
 */

defined('JPATH_PLATFORM') or die;

jimport('joomla.html.html');
jimport('joomla.form.formfield');
jimport('joomla.form.helper');
JFormHelper::loadFieldClass('list');

/**
 * Form Field class for the Joomla Framework.
 *
 * @package     Joomla.Platform
 * @subpackage  Form
 * @since       11.1
 */
class JFormFieldInteger extends JFormFieldList
{
    /**
     * The form field type.
     *
     * @var     string
     * @since   11.1
     */
    protected $type = 'Integer';

    /**
     * Method to get the field options.
     *
     * @return  array   The field option objects.
     * @since   11.1
     */
    protected function getOptions()
    {
        // Initialize variables.
        $options = array();

        // Initialize some field attributes.
        $first  = (int) $this->element['first'];
        $last   = (int) $this->element['last'];
        $step   = (int) $this->element['step'];

        // Sanity checks.
        if ($step == 0) {
            // Step of 0 will create an endless loop.
            return $options;
        } else if ($first < $last && $step < 0) {
            // A negative step will never reach the last number.
            return $options;
        } else if ($first > $last && $step > 0) {
            // A position step will never reach the last number.
            return $options;
        }

        // Build the options array.
        for ($i = $first; $i <= $last; $i += $step) {
            $options[] = JHtml::_('select.option', $i);
        }

        // Merge any additional options in the XML definition.
        $options = array_merge(parent::getOptions(), $options);

        return $options;
    }
}