<?php
/**
 * @package     Joomla.Administrator
 * @subpackage  com_plugins
 *
 * @copyright   (C) 2017 Open Source Matters, Inc. <https://www.joomla.org>
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\Component\Plugins\Administrator\Helper;

\defined('_JEXEC') or die;

use Joomla\CMS\Factory;
use Joomla\CMS\Filesystem\Path;
use Joomla\CMS\HTML\HTMLHelper;
use Joomla\CMS\Installer\Installer;

/**
 * Plugins component helper.
 *
 * @since  1.6
 */
class PluginsHelper
{
	public static $extension = 'com_plugins';

	/**
	 * Returns an array of standard published state filter options.
	 *
	 * @return  array    The HTML code for the select tag
	 */
	public static function publishedOptions()
	{
		// Build the active state filter options.
		$options = array();
		$options[] = HTMLHelper::_('select.option', '1', 'JENABLED');
		$options[] = HTMLHelper::_('select.option', '0', 'JDISABLED');

		return $options;
	}

	/**
	 * Returns a list of folders filter options.
	 *
	 * @return  string    The HTML code for the select tag
	 */
	public static function folderOptions()
	{
		$db = Factory::getDbo();
		$query = $db->getQuery(true)
			->select('DISTINCT(folder) AS value, folder AS text')
			->from('#__extensions')
			->where($db->quoteName('type') . ' = ' . $db->quote('plugin'))
			->order('folder');

		$db->setQuery($query);

		try
		{
			$options = $db->loadObjectList();
		}
		catch (\RuntimeException $e)
		{
			Factory::getApplication()->enqueueMessage($e->getMessage(), 'error');
		}

		return $options;
	}

	/**
	 * Returns a list of elements filter options.
	 *
	 * @return  string    The HTML code for the select tag
	 */
	public static function elementOptions()
	{
		$db = Factory::getDbo();
		$query = $db->getQuery(true)
			->select('DISTINCT(element) AS value, element AS text')
			->from('#__extensions')
			->where($db->quoteName('type') . ' = ' . $db->quote('plugin'))
			->order('element');
		$db->setQuery($query);

		try
		{
			$options = $db->loadObjectList();
		}
		catch (\RuntimeException $e)
		{
			Factory::getApplication()->enqueueMessage($e->getMessage(), 'error');
		}

		return $options;
	}

	/**
	 * Parse the template file.
	 *
	 * @param   string  $templateBaseDir  Base path to the template directory.
	 * @param   string  $templateDir      Template directory.
	 *
	 * @return  \JObject
	 */
	public function parseXMLTemplateFile($templateBaseDir, $templateDir)
	{
		$data = new \JObject;

		// Check of the xml file exists.
		$filePath = Path::clean($templateBaseDir . '/templates/' . $templateDir . '/templateDetails.xml');

		if (is_file($filePath))
		{
			$xml = Installer::parseXMLInstallFile($filePath);

			if ($xml['type'] != 'template')
			{
				return false;
			}

			foreach ($xml as $key => $value)
			{
				$data->set($key, $value);
			}
		}

		return $data;
	}
}

• [F] PluginsHelper.php
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