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<?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.filesystem.file');
jimport('joomla.filesystem.folder');
jimport('joomla.form.formfield');
jimport('joomla.form.helper');

/**
 * Form Field to display a list of the layouts for module display from the module or template overrides.
 *
 * @package     Joomla.Platform
 * @subpackage  Form
 * @since       11.1
 */
class JFormFieldModuleLayout extends JFormField
{
	/**
	 * The form field type.
	 *
	 * @var    string
	 * @since  11.1
	 */
	protected $type = 'ModuleLayout';

/**
	 * Method to get the field input for module layouts.
	 *
	 * @return  string  The field input.
	 * @since   11.1
	 */
	protected function getInput()
	{
		// Initialize variables.

// Get the client id.
		$clientName = $this->element['client_id'];

// Get the client id.
		$clientId = $this->element['client_id'];

if (is_null($clientId) && $this->form instanceof JForm) {
			$clientId = $this->form->getValue('client_id');
		}
		$clientId = (int) $clientId;

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

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

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

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

// If an extension and view are present build the options.
		if ($module && $client) {

// Load language file
			$lang = JFactory::getLanguage();
				$lang->load($module.'.sys', $client->path, null, false, false)
			||	$lang->load($module.'.sys', $client->path.'/modules/'.$module, null, false, false)
			||	$lang->load($module.'.sys', $client->path, $lang->getDefault(), false, false)
			||	$lang->load($module.'.sys', $client->path.'/modules/'.$module, $lang->getDefault(), false, false);

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

// Build the query.
			$query->select('element, name');
			$query->from('#__extensions as e');
			$query->where('e.client_id = '.(int) $clientId);
			$query->where('e.type = '.$db->quote('template'));
			$query->where('e.enabled = 1');

if ($template) {
				$query->where('e.element = '.$db->quote($template));
			}

if ($template_style_id) {
				$query->join('LEFT', '#__template_styles as s on s.template=e.element');
				$query->where('s.id='.(int)$template_style_id);
			}

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

// Check for a database error.
			if ($db->getErrorNum()) {
				JError::raiseWarning(500, $db->getErrorMsg());
			}

// Build the search paths for module layouts.
			$module_path = JPath::clean($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 = JFolder::files($module_path, '^[^_]*\.php$'))) {
				// Create the group for the module
				$groups['_']=array();
				$groups['_']['id']=$this->id.'__';
				$groups['_']['text']=JText::sprintf('JOPTION_FROM_MODULE');
				$groups['_']['items']=array();

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

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

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

// Add the layout options from the template path.
					if (is_dir($template_path) && ($files = JFolder::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']=JText::sprintf('JOPTION_FROM_TEMPLATE', $template->name);
							$groups[$template->element]['items']=array();

foreach ($files as $file)
							{
								// Add an option to the template group
								$value = JFile::stripExt($file);
								$text = $lang->hasKey($key = strtoupper('TPL_'.$template->element.'_'.$module.'_LAYOUT_'.$value)) ? JText::_($key) : $value;
								$groups[$template->element]['items'][]	= JHtml::_('select.option', $template->element.':'.$value, $text);
							}
						}
					}
				}
			}
			// Compute attributes for the grouped list
			$attr = $this->element['size'] ? ' size="'.(int) $this->element['size'].'"' : '';

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

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

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

return implode($html);
		}
		else {

return '';
		}
	}
}