core-bundle/src/Resources/contao/modules/ModuleNavigation.php
protected function compile()
	{
		/** @var PageModel $objPage */
		global $objPage;

		// Set the trail and level
		if ($this->defineRoot && $this->rootPage > 0)
		{
			$trail = array($this->rootPage);
			$level = 0;
		}
		else
		{
			$trail = $objPage->trail;
			$level = ($this->levelOffset > 0) ? $this->levelOffset : 0;
		}

		$lang = null;
		$host = null;

		// Overwrite the domain and language if the reference page belongs to a differnt root page (see #3765)
		if ($this->defineRoot && $this->rootPage > 0)
		{
			$objRootPage = PageModel::findWithDetails($this->rootPage);

			// Set the language
			if (Config::get('addLanguageToUrl') && $objRootPage->rootLanguage != $objPage->rootLanguage)
			{
				$lang = $objRootPage->rootLanguage;
			}

			// Set the domain
			if ($objRootPage->rootId != $objPage->rootId && $objRootPage->domain != '' && $objRootPage->domain != $objPage->domain)
			{
				$host = $objRootPage->domain;
			}
		}

		$this->Template->request = ampersand(Environment::get('indexFreeRequest'));
		$this->Template->skipId = 'skipNavigation' . $this->id;
		$this->Template->skipNavigation = StringUtil::specialchars($GLOBALS['TL_LANG']['MSC']['skipNavigation']);
		$this->Template->items = $this->renderNavigation($trail[$level], 1, $host, $lang);
	}
protected function compile()
	{
		/** @var PageModel $objPage */
		global $objPage;

		// Set the trail and level
		if ($this->defineRoot && $this->rootPage > 0)
		{
			$trail = array($this->rootPage);
			$level = 0;
		}
		else
		{
			$trail = $objPage->trail;
			$level = ($this->levelOffset > 0) ? $this->levelOffset : 0;
		}

		$lang = null;
		$host = null;

		// Overwrite the domain and language if the reference page belongs to a differnt root page (see #3765)
		if ($this->defineRoot && $this->rootPage > 0)
		{
			$objRootPage = PageModel::findWithDetails($this->rootPage);

			// Set the language
			if (Config::get('addLanguageToUrl') && $objRootPage->rootLanguage != $objPage->rootLanguage)
			{
				$lang = $objRootPage->rootLanguage;
			}

			// Set the domain
			if ($objRootPage->rootId != $objPage->rootId && $objRootPage->domain != '' && $objRootPage->domain != $objPage->domain)
			{
				$host = $objRootPage->domain;
			}
		}

		$this->Template->request = ampersand(Environment::get('indexFreeRequest'));
		$this->Template->skipId = 'skipNavigation' . $this->id;
		$this->Template->skipNavigation = StringUtil::specialchars($GLOBALS['TL_LANG']['MSC']['skipNavigation']);
		$this->Template->items = $this->renderNavigation($trail[$level], 1, $host, $lang);
	}
Generate the module