<?php
/**
 * Joomla! Content Management System
 *
 * @copyright  (C) 2014 Open Source Matters, Inc. <https://www.joomla.org>
 * @license    GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\CMS\Autoload;

\defined('_JEXEC') or die;

use Composer\Autoload\ClassLoader as ComposerClassLoader;

/**
 * Decorate Composer ClassLoader for Joomla!
 *
 * For backward compatibility due to class aliasing in the CMS, the loadClass() method was modified to call
 * the JLoader::applyAliasFor() method.
 *
 * @since  3.4
 */
class ClassLoader
{
	/**
	 * The Composer class loader
	 *
	 * @var    ComposerClassLoader
	 * @since  3.4
	 */
	private $loader;

	/**
	 * Constructor
	 *
	 * @param   ComposerClassLoader  $loader  Composer autoloader
	 *
	 * @since   3.4
	 */
	public function __construct(ComposerClassLoader $loader)
	{
		$this->loader = $loader;
	}

	/**
	 * Loads the given class or interface.
	 *
	 * @param   string  $class  The name of the class
	 *
	 * @return  boolean|null  True if loaded, null otherwise
	 *
	 * @since   3.4
	 */
	public function loadClass($class)
	{
		if ($result = $this->loader->loadClass($class))
		{
			\JLoader::applyAliasFor($class);
		}

		return $result;
	}
}
