config.neon

common:
	factories:
		navigationControl:
			class: NavigationControl( %appDir%/config/menu.neon, { gallery: @gallery } )

INavigationControl.php

<?php

interface INavigationLoader
{
	/** @return Nette\ArrayHash */
	function loadNavigation();
}

menu.neon

':Homepage:uvod': Úvod
':Gallery:default':
	text: Galerie
	items: gallery # navigationLoader

NavigationControl.php

<?php

use Nette\ArrayHash;


class NavigationControl extends BaseControl
{
	/** @var INavigationLoader[] */
	private $loaders;

	/** @var ArrayHash */
	private $items;



	// ...



	function __construct($file, array $loaders = NULL)
	{
		parent::__construct();

		if ($loaders) {
			foreach ($loaders as $name => $loader) {
				$this->addLoader($name, $loader);
			}
		}

		$this->processItems(NULL, $items = ArrayHash::from( Nette\Utils\Neon::decode( file_get_contents( $file ) ) ));
		$this->items = $items;
	}



	function addLoader($name, INavigationLoader $loader)
	{
		$this->loaders[$name] = $loader;
	}



	// ...



	private function processItems($parent, ArrayHash $items)
	{
		foreach ($items as $dest => $item) {
			if ($item instanceof ArrayHash) {
				$item['parent'] = $parent;
				$item['dest'] = $dest;
				
				if (isset($item['items'])) {
					if (is_string($item['items'])) {
						if (!isset($this->loaders[$item['items']])) {
							throw new Nette\InvalidStateException("Unknown loader '{$item['items']}'.");
						}

						$item['items'] = $this->loaders[ $item['items'] ]->loadNavigation();

						if (!count($item['items'])) {
							unset($item['items']);

						} else {
							$this->processItems($item, $item['items']);
						}

					} elseif ($item['items'] instanceof ArrayHash) {
						if (!count($item['items'])) {
							unset($item['items']);

						} else {
							$this->processItems($item, $item['items']);
						}

					} else {
						throw new Nette\InvalidStateException("Either string or Nette\ArrayHash expected, but '" . gettype($item['items']) . "' given.");
					}
				}

			} else {
				$items[$dest] = ArrayHash::from(array(
					'parent' => $parent,
					'dest' => $dest,
					'text' => $item,
				));
			}
		}
	}



	// ...
}