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

		$type = null;
		$pageId = $objPage->id;
		$pages = array($objPage);
		$items = array();

		// Get all pages up to the root page
		$objPages = PageModel::findParentsById($objPage->pid);

		if ($objPages !== null)
		{
			while ($pageId > 0 && $type != 'root' && $objPages->next())
			{
				$type = $objPages->type;
				$pageId = $objPages->pid;
				$pages[] = $objPages->current();
			}
		}

		// Get the first active regular page and display it instead of the root page
		if ($type == 'root')
		{
			$objFirstPage = PageModel::findFirstPublishedByPid($objPages->id);

			$items[] = array
			(
				'isRoot'   => true,
				'isActive' => false,
				'href'     => (($objFirstPage !== null) ? $objFirstPage->getFrontendUrl() : Environment::get('base')),
				'title'    => StringUtil::specialchars($objPages->pageTitle ?: $objPages->title, true),
				'link'     => $objPages->title,
				'data'     => (($objFirstPage !== null) ? $objFirstPage->row() : array()),
				'class'    => ''
			);

			array_pop($pages);
		}

		/** @var PageModel[] $pages */
		for ($i=(\count($pages)-1); $i>0; $i--)
		{
			if (($pages[$i]->hide && !$this->showHidden) || (!$pages[$i]->published && !BE_USER_LOGGED_IN))
			{
				continue;
			}

			// Get href
			switch ($pages[$i]->type)
			{
				case 'redirect':
					$href = $pages[$i]->url;

					if (strncasecmp($href, 'mailto:', 7) === 0)
					{
						$href = StringUtil::encodeEmail($href);
					}
					break;

				case 'forward':
					if ($pages[$i]->jumpTo)
					{
						$objNext = PageModel::findPublishedById($pages[$i]->jumpTo);
					}
					else
					{
						$objNext = PageModel::findFirstPublishedRegularByPid($pages[$i]->id);
					}

					if ($objNext instanceof PageModel)
					{
						$href = $objNext->getFrontendUrl();
						break;
					}
					// DO NOT ADD A break; STATEMENT

				default:
					$href = $pages[$i]->getFrontendUrl();
					break;
			}

			$items[] = array
			(
				'isRoot'   => false,
				'isActive' => false,
				'href'     => $href,
				'title'    => StringUtil::specialchars($pages[$i]->pageTitle ?: $pages[$i]->title, true),
				'link'     => $pages[$i]->title,
				'data'     => $pages[$i]->row(),
				'class'    => ''
			);
		}

		// Active article
		if (isset($_GET['articles']))
		{
			$items[] = array
			(
				'isRoot'   => false,
				'isActive' => false,
				'href'     => $pages[0]->getFrontendUrl(),
				'title'    => StringUtil::specialchars($pages[0]->pageTitle ?: $pages[0]->title, true),
				'link'     => $pages[0]->title,
				'data'     => $pages[0]->row(),
				'class'    => ''
			);

			list($strSection, $strArticle) = explode(':', Input::get('articles'));

			if ($strArticle === null)
			{
				$strArticle = $strSection;
			}

			$objArticle = ArticleModel::findByIdOrAlias($strArticle);
			$strAlias = $objArticle->alias ?: $objArticle->id;

			if ($objArticle->inColumn != 'main')
			{
				$strAlias = $objArticle->inColumn . ':' . $strAlias;
			}

			if ($objArticle !== null)
			{
				$items[] = array
				(
					'isRoot'   => false,
					'isActive' => true,
					'href'     => $pages[0]->getFrontendUrl('/articles/' . $strAlias),
					'title'    => StringUtil::specialchars($objArticle->title, true),
					'link'     => $objArticle->title,
					'data'     => $objArticle->row(),
					'class'    => ''
				);
			}
		}

		// Active page
		else
		{
			$items[] = array
			(
				'isRoot'   => false,
				'isActive' => true,
				'href'     => $pages[0]->getFrontendUrl(),
				'title'    => StringUtil::specialchars($pages[0]->pageTitle ?: $pages[0]->title),
				'link'     => $pages[0]->title,
				'data'     => $pages[0]->row(),
				'class'    => ''
			);
		}

		// Mark the first element (see #4833)
		$items[0]['class'] = 'first';

		// HOOK: add custom logic
		if (isset($GLOBALS['TL_HOOKS']['generateBreadcrumb']) && \is_array($GLOBALS['TL_HOOKS']['generateBreadcrumb']))
		{
			foreach ($GLOBALS['TL_HOOKS']['generateBreadcrumb'] as $callback)
			{
				$this->import($callback[0]);
				$items = $this->{$callback[0]}->{$callback[1]}($items, $this);
			}
		}

		$this->Template->items = $items;
	}
protected function compile()
	{
		/** @var PageModel $objPage */
		global $objPage;

		$type = null;
		$pageId = $objPage->id;
		$pages = array($objPage);
		$items = array();

		// Get all pages up to the root page
		$objPages = PageModel::findParentsById($objPage->pid);

		if ($objPages !== null)
		{
			while ($pageId > 0 && $type != 'root' && $objPages->next())
			{
				$type = $objPages->type;
				$pageId = $objPages->pid;
				$pages[] = $objPages->current();
			}
		}

		// Get the first active regular page and display it instead of the root page
		if ($type == 'root')
		{
			$objFirstPage = PageModel::findFirstPublishedByPid($objPages->id);

			$items[] = array
			(
				'isRoot'   => true,
				'isActive' => false,
				'href'     => (($objFirstPage !== null) ? $objFirstPage->getFrontendUrl() : Environment::get('base')),
				'title'    => StringUtil::specialchars($objPages->pageTitle ?: $objPages->title, true),
				'link'     => $objPages->title,
				'data'     => (($objFirstPage !== null) ? $objFirstPage->row() : array()),
				'class'    => ''
			);

			array_pop($pages);
		}

		/** @var PageModel[] $pages */
		for ($i=(\count($pages)-1); $i>0; $i--)
		{
			if (($pages[$i]->hide && !$this->showHidden) || (!$pages[$i]->published && !BE_USER_LOGGED_IN))
			{
				continue;
			}

			// Get href
			switch ($pages[$i]->type)
			{
				case 'redirect':
					$href = $pages[$i]->url;

					if (strncasecmp($href, 'mailto:', 7) === 0)
					{
						$href = StringUtil::encodeEmail($href);
					}
					break;

				case 'forward':
					if ($pages[$i]->jumpTo)
					{
						$objNext = PageModel::findPublishedById($pages[$i]->jumpTo);
					}
					else
					{
						$objNext = PageModel::findFirstPublishedRegularByPid($pages[$i]->id);
					}

					if ($objNext instanceof PageModel)
					{
						$href = $objNext->getFrontendUrl();
						break;
					}
					// DO NOT ADD A break; STATEMENT

				default:
					$href = $pages[$i]->getFrontendUrl();
					break;
			}

			$items[] = array
			(
				'isRoot'   => false,
				'isActive' => false,
				'href'     => $href,
				'title'    => StringUtil::specialchars($pages[$i]->pageTitle ?: $pages[$i]->title, true),
				'link'     => $pages[$i]->title,
				'data'     => $pages[$i]->row(),
				'class'    => ''
			);
		}

		// Active article
		if (isset($_GET['articles']))
		{
			$items[] = array
			(
				'isRoot'   => false,
				'isActive' => false,
				'href'     => $pages[0]->getFrontendUrl(),
				'title'    => StringUtil::specialchars($pages[0]->pageTitle ?: $pages[0]->title, true),
				'link'     => $pages[0]->title,
				'data'     => $pages[0]->row(),
				'class'    => ''
			);

			list($strSection, $strArticle) = explode(':', Input::get('articles'));

			if ($strArticle === null)
			{
				$strArticle = $strSection;
			}

			$objArticle = ArticleModel::findByIdOrAlias($strArticle);
			$strAlias = $objArticle->alias ?: $objArticle->id;

			if ($objArticle->inColumn != 'main')
			{
				$strAlias = $objArticle->inColumn . ':' . $strAlias;
			}

			if ($objArticle !== null)
			{
				$items[] = array
				(
					'isRoot'   => false,
					'isActive' => true,
					'href'     => $pages[0]->getFrontendUrl('/articles/' . $strAlias),
					'title'    => StringUtil::specialchars($objArticle->title, true),
					'link'     => $objArticle->title,
					'data'     => $objArticle->row(),
					'class'    => ''
				);
			}
		}

		// Active page
		else
		{
			$items[] = array
			(
				'isRoot'   => false,
				'isActive' => true,
				'href'     => $pages[0]->getFrontendUrl(),
				'title'    => StringUtil::specialchars($pages[0]->pageTitle ?: $pages[0]->title),
				'link'     => $pages[0]->title,
				'data'     => $pages[0]->row(),
				'class'    => ''
			);
		}

		// Mark the first element (see #4833)
		$items[0]['class'] = 'first';

		// HOOK: add custom logic
		if (isset($GLOBALS['TL_HOOKS']['generateBreadcrumb']) && \is_array($GLOBALS['TL_HOOKS']['generateBreadcrumb']))
		{
			foreach ($GLOBALS['TL_HOOKS']['generateBreadcrumb'] as $callback)
			{
				$this->import($callback[0]);
				$items = $this->{$callback[0]}->{$callback[1]}($items, $this);
			}
		}

		$this->Template->items = $items;
	}
Generate the module