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<?php
/**
 * Joomla! Content Management System
 *
 * @copyright  (C) 2009 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\Application\ApplicationHelper;
use Joomla\CMS\Factory;
use Joomla\CMS\Filesystem\Folder;
use Joomla\CMS\Filesystem\Path;
use Joomla\CMS\Form\Form;
use Joomla\CMS\Form\FormField;
use Joomla\CMS\HTML\HTMLHelper;
use Joomla\CMS\Language\Text;
use Joomla\Database\ParameterType;

/**
 * Form Field to display a list of the layouts for module display from the module or template overrides.
 *
 * @since  1.6
 */
class ModulelayoutField extends FormField
{
	/**
	 * The form field type.
	 *
	 * @var    string
	 * @since  1.6
	 */
	protected $type = 'ModuleLayout';

/**
	 * Method to get the field input for module layouts.
	 *
	 * @return  string  The field input.
	 *
	 * @since   1.6
	 */
	protected function getInput()
	{
		// Get the client id.
		$clientId = $this->element['client_id'];

if ($clientId === null && $this->form instanceof Form)
		{
			$clientId = $this->form->getValue('client_id');
		}

$clientId = (int) $clientId;

$client = ApplicationHelper::getClientInfo($clientId);

// Get the module.
		$module = (string) $this->element['module'];

if (empty($module) && ($this->form instanceof Form))
		{
			$module = $this->form->getValue('module');
		}

$module = preg_replace('#\W#', '', $module);

// Get the template.
		$template = (string) $this->element['template'];
		$template = preg_replace('#\W#', '', $template);

// Get the style.
		$template_style_id = 0;

if ($this->form instanceof Form)
		{
			$template_style_id = $this->form->getValue('template_style_id');
			$template_style_id = (int) preg_replace('#\W#', '', $template_style_id);
		}

// If an extension and view are present build the options.
		if ($module && $client)
		{
			// Load language file
			$lang = Factory::getLanguage();
			$lang->load($module . '.sys', $client->path)
				|| $lang->load($module . '.sys', $client->path . '/modules/' . $module);

// Get the database object and a new query object.
			$db = Factory::getDbo();
			$query = $db->getQuery(true);

// Build the query.
			$query->select(
				[
					$db->quoteName('element'),
					$db->quoteName('name'),
				]
			)
				->from($db->quoteName('#__extensions', 'e'))
				->where(
					[
						$db->quoteName('e.client_id') . ' = :clientId',
						$db->quoteName('e.type') . ' = ' . $db->quote('template'),
						$db->quoteName('e.enabled') . ' = 1',
					]
				)
				->bind(':clientId', $clientId, ParameterType::INTEGER);

if ($template)
			{
				$query->where($db->quoteName('e.element') . ' = :template')
					->bind(':template', $template);
			}

if ($template_style_id)
			{
				$query->join('LEFT', $db->quoteName('#__template_styles', 's'), $db->quoteName('s.template') . ' = ' . $db->quoteName('e.element'))
					->where($db->quoteName('s.id') . ' = :style')
					->bind(':style', $template_style_id, ParameterType::INTEGER);
			}

// Set the query and load the templates.
			$db->setQuery($query);
			$templates = $db->loadObjectList('element');

// Build the search paths for module layouts.
			$module_path = Path::clean($client->path . '/modules/' . $module . '/tmpl');

// Prepare array of component layouts
			$module_layouts = array();

// Prepare the grouped list
			$groups = array();

// Add the layout options from the module path.
			if (is_dir($module_path) && ($module_layouts = Folder::files($module_path, '^[^_]*\.php$')))
			{
				// Create the group for the module
				$groups['_'] = array();
				$groups['_']['id'] = $this->id . '__';
				$groups['_']['text'] = Text::sprintf('JOPTION_FROM_MODULE');
				$groups['_']['items'] = array();

foreach ($module_layouts as $file)
				{
					// Add an option to the module group
					$value = basename($file, '.php');
					$text = $lang->hasKey($key = strtoupper($module . '_LAYOUT_' . $value)) ? Text::_($key) : $value;
					$groups['_']['items'][] = HTMLHelper::_('select.option', '_:' . $value, $text);
				}
			}

// Loop on all templates
			if ($templates)
			{
				foreach ($templates as $template)
				{
					// Load language file
					$lang->load('tpl_' . $template->element . '.sys', $client->path)
						|| $lang->load('tpl_' . $template->element . '.sys', $client->path . '/templates/' . $template->element);

$template_path = Path::clean($client->path . '/templates/' . $template->element . '/html/' . $module);

// Add the layout options from the template path.
					if (is_dir($template_path) && ($files = Folder::files($template_path, '^[^_]*\.php$')))
					{
						foreach ($files as $i => $file)
						{
							// Remove layout that already exist in component ones
							if (\in_array($file, $module_layouts))
							{
								unset($files[$i]);
							}
						}

if (\count($files))
						{
							// Create the group for the template
							$groups[$template->element] = array();
							$groups[$template->element]['id'] = $this->id . '_' . $template->element;
							$groups[$template->element]['text'] = Text::sprintf('JOPTION_FROM_TEMPLATE', $template->name);
							$groups[$template->element]['items'] = array();

foreach ($files as $file)
							{
								// Add an option to the template group
								$value = basename($file, '.php');
								$text = $lang->hasKey($key = strtoupper('TPL_' . $template->element . '_' . $module . '_LAYOUT_' . $value))
									? Text::_($key) : $value;
								$groups[$template->element]['items'][] = HTMLHelper::_('select.option', $template->element . ':' . $value, $text);
							}
						}
					}
				}
			}

// Compute attributes for the grouped list
			$attr = $this->element['size'] ? ' size="' . (int) $this->element['size'] . '"' : '';
			$attr .= $this->element['class'] ? ' class="' . (string) $this->element['class'] . '"' : '';

// Prepare HTML code
			$html = array();

// Compute the current selected values
			$selected = array($this->value);

// Add a grouped list
			$html[] = HTMLHelper::_(
				'select.groupedlist', $groups, $this->name,
				array('id' => $this->id, 'group.id' => 'id', 'list.attr' => $attr, 'list.select' => $selected)
			);

return implode($html);
		}
		else
		{
			return '';
		}
	}
}