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<?php
/**
 * Joomla! Content Management System
 *
 * @copyright  (C) 2010 Open Source Matters, Inc. <https://www.joomla.org>
 * @license    GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\CMS\Form\Field;

\defined('JPATH_PLATFORM') or die;

use Joomla\CMS\HTML\HTMLHelper;
use Joomla\CMS\Language\Text;
use Joomla\Filesystem\Folder;
use Joomla\Filesystem\Path;

/**
 * Supports an HTML select list of folder
 *
 * @since  1.7.0
 */
class FolderlistField extends ListField
{
	/**
	 * The form field type.
	 *
	 * @var    string
	 * @since  1.7.0
	 */
	protected $type = 'Folderlist';

/**
	 * The folder name filter.
	 *
	 * @var    string
	 * @since  4.0.0
	 */
	protected $folderFilter;

/**
	 * The exclude.
	 *
	 * @var    string
	 * @since  3.2
	 */
	protected $exclude;

/**
	 * The recursive.
	 *
	 * @var    string
	 * @since  3.6
	 */
	protected $recursive;

/**
	 * The hideNone.
	 *
	 * @var    boolean
	 * @since  3.2
	 */
	protected $hideNone = false;

/**
	 * The hideDefault.
	 *
	 * @var    boolean
	 * @since  3.2
	 */
	protected $hideDefault = false;

/**
	 * The directory.
	 *
	 * @var    string
	 * @since  3.2
	 */
	protected $directory;

/**
	 * Method to get certain otherwise inaccessible properties from the form field object.
	 *
	 * @param   string  $name  The property name for which to get the value.
	 *
	 * @return  mixed  The property value or null.
	 *
	 * @since   3.2
	 */
	public function __get($name)
	{
		switch ($name)
		{
			case 'folderFilter':
			case 'exclude':
			case 'recursive':
			case 'hideNone':
			case 'hideDefault':
			case 'directory':
				return $this->$name;
		}

return parent::__get($name);
	}

/**
	 * Method to set certain otherwise inaccessible properties of the form field object.
	 *
	 * @param   string  $name   The property name for which to set the value.
	 * @param   mixed   $value  The value of the property.
	 *
	 * @return  void
	 *
	 * @since   3.2
	 */
	public function __set($name, $value)
	{
		switch ($name)
		{
			case 'folderFilter':
			case 'directory':
			case 'exclude':
			case 'recursive':
				$this->$name = (string) $value;
				break;

case 'hideNone':
			case 'hideDefault':
				$value = (string) $value;
				$this->$name = ($value === 'true' || $value === $name || $value === '1');
				break;

default:
				parent::__set($name, $value);
		}
	}

/**
	 * Method to attach a Form object to the field.
	 *
	 * @param   \SimpleXMLElement  $element  The SimpleXMLElement object representing the `<field>` tag for the form field object.
	 * @param   mixed              $value    The form field value to validate.
	 * @param   string             $group    The field name group control value. This acts as an array container for the field.
	 *                                       For example if the field has name="foo" and the group value is set to "bar" then the
	 *                                       full field name would end up being "bar[foo]".
	 *
	 * @return  boolean  True on success.
	 *
	 * @see     FormField::setup()
	 * @since   3.2
	 */
	public function setup(\SimpleXMLElement $element, $value, $group = null)
	{
		$return = parent::setup($element, $value, $group);

if ($return)
		{
			$this->folderFilter = (string) $this->element['folderFilter'];
			$this->exclude      = (string) $this->element['exclude'];

$recursive       = (string) $this->element['recursive'];
			$this->recursive = ($recursive === 'true' || $recursive === 'recursive' || $recursive === '1');

$hideNone       = (string) $this->element['hide_none'];
			$this->hideNone = ($hideNone === 'true' || $hideNone === 'hideNone' || $hideNone === '1');

$hideDefault       = (string) $this->element['hide_default'];
			$this->hideDefault = ($hideDefault === 'true' || $hideDefault === 'hideDefault' || $hideDefault === '1');

// Get the path in which to search for file options.
			$this->directory = (string) $this->element['directory'];
		}

return $return;
	}

/**
	 * Method to get the field options.
	 *
	 * @return  array  The field option objects.
	 *
	 * @since   1.7.0
	 */
	protected function getOptions()
	{
		$options = array();

$path = $this->directory;

if (!is_dir($path))
		{
			if (is_dir(JPATH_ROOT . '/' . $path))
			{
				$path = JPATH_ROOT . '/' . $path;
			}
			else
			{
				return [];
			}
		}

$path = Path::clean($path);

// Prepend some default options based on field attributes.
		if (!$this->hideNone)
		{
			$options[] = HTMLHelper::_('select.option', '-1', Text::alt('JOPTION_DO_NOT_USE', preg_replace('/[^a-zA-Z0-9_\-]/', '_', $this->fieldname)));
		}

if (!$this->hideDefault)
		{
			$options[] = HTMLHelper::_('select.option', '', Text::alt('JOPTION_USE_DEFAULT', preg_replace('/[^a-zA-Z0-9_\-]/', '_', $this->fieldname)));
		}

// Get a list of folders in the search path with the given filter.
		$folders = Folder::folders($path, $this->folderFilter, $this->recursive, true);

// Build the options list from the list of folders.
		if (\is_array($folders))
		{
			foreach ($folders as $folder)
			{
				// Remove the root part and the leading /
				$folder = trim(str_replace($path, '', $folder), DIRECTORY_SEPARATOR);

// Check to see if the file is in the exclude mask.
				if ($this->exclude)
				{
					if (preg_match(\chr(1) . $this->exclude . \chr(1), $folder))
					{
						continue;
					}
				}

$options[] = HTMLHelper::_('select.option', $folder, $folder);
			}
		}

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

return $options;
	}
}