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<?php
/**
*
* @package extension
* @copyright (c) 2011 phpBB Group
* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
*
*/
/**
* @ignore
*/
if (!defined('IN_PHPBB'))
{
exit;
}
/**
* Provides a set of items found in extensions
*
* @package extension
*/
abstract class phpbb_extension_provider implements IteratorAggregate
{
/**
* Array holding all found items
* @var array|null
*/
protected $items = null;
/**
* An extension manager to search for items in extensions
* @var phpbb_extension_manager
*/
protected $extension_manager;
/**
* Constructor. Loads all available items.
*
* @param phpbb_extension_manager $extension_manager phpBB extension manager
*/
public function __construct(phpbb_extension_manager $extension_manager)
{
$this->extension_manager = $extension_manager;
}
/**
* Finds template paths using the extension manager.
*
* @return array List of task names
*/
abstract protected function find();
/**
* Retrieve an iterator over all items
*
* @return ArrayIterator An iterator for the array of template paths
*/
public function getIterator()
{
if ($this->items === null)
{
$this->items = $this->find();
}
return new ArrayIterator($this->items);
}
}
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