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<?php | |
/** | |
* @file | |
* Contains \Drupal\system\SystemManager. | |
*/ | |
namespace Drupal\system; | |
use Drupal\Core\Entity\EntityManagerInterface; | |
use Drupal\Core\Menu\MenuActiveTrailInterface; | |
use Drupal\Core\Menu\MenuLinkTreeInterface; | |
use Drupal\Core\Menu\MenuLinkInterface; | |
use Drupal\Core\Menu\MenuTreeParameters; | |
use Drupal\Core\Extension\ModuleHandlerInterface; | |
use Symfony\Component\HttpFoundation\RequestStack; | |
/** | |
* System Manager Service. | |
*/ | |
class SystemManager { | |
/** | |
* Module handler service. | |
* | |
* @var \Drupal\Core\Extension\ModuleHandlerInterface | |
*/ | |
protected $moduleHandler; | |
/** | |
* The request stack. | |
* | |
* @var \Symfony\Component\HttpFoundation\RequestStack | |
*/ | |
protected $requestStack; | |
/** | |
* The menu link tree manager. | |
* | |
* @var \Drupal\Core\Menu\MenuLinkTreeInterface | |
*/ | |
protected $menuTree; | |
/** | |
* The active menu trail service. | |
* | |
* @var \Drupal\Core\Menu\MenuActiveTrailInterface | |
*/ | |
protected $menuActiveTrail; | |
/** | |
* A static cache of menu items. | |
* | |
* @var array | |
*/ | |
protected $menuItems; | |
/** | |
* Requirement severity -- Requirement successfully met. | |
*/ | |
const REQUIREMENT_OK = 0; | |
/** | |
* Requirement severity -- Warning condition; proceed but flag warning. | |
*/ | |
const REQUIREMENT_WARNING = 1; | |
/** | |
* Requirement severity -- Error condition; abort installation. | |
*/ | |
const REQUIREMENT_ERROR = 2; | |
/** | |
* Constructs a SystemManager object. | |
* | |
* @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler | |
* The module handler. | |
* @param \Drupal\Core\Entity\EntityManagerInterface $entity_manager | |
* The entity manager. | |
* @param \Symfony\Component\HttpFoundation\RequestStack $request_stack | |
* The request stack. | |
* @param \Drupal\Core\Menu\MenuLinkTreeInterface $menu_tree | |
* The menu tree manager. | |
* @param \Drupal\Core\Menu\MenuActiveTrailInterface $menu_active_trail | |
* The active menu trail service. | |
*/ | |
public function __construct(ModuleHandlerInterface $module_handler, EntityManagerInterface $entity_manager, RequestStack $request_stack, MenuLinkTreeInterface $menu_tree, MenuActiveTrailInterface $menu_active_trail) { | |
$this->moduleHandler = $module_handler; | |
$this->requestStack = $request_stack; | |
$this->menuTree = $menu_tree; | |
$this->menuActiveTrail = $menu_active_trail; | |
} | |
/** | |
* Checks for requirement severity. | |
* | |
* @return bool | |
* Returns the status of the system. | |
*/ | |
public function checkRequirements() { | |
$requirements = $this->listRequirements(); | |
return $this->getMaxSeverity($requirements) == static::REQUIREMENT_ERROR; | |
} | |
/** | |
* Displays the site status report. Can also be used as a pure check. | |
* | |
* @return array | |
* An array of system requirements. | |
*/ | |
public function listRequirements() { | |
// Load .install files | |
include_once DRUPAL_ROOT . '/core/includes/install.inc'; | |
drupal_load_updates(); | |
// Check run-time requirements and status information. | |
$requirements = $this->moduleHandler->invokeAll('requirements', array('runtime')); | |
usort($requirements, function($a, $b) { | |
if (!isset($a['weight'])) { | |
if (!isset($b['weight'])) { | |
return strcasecmp($a['title'], $b['title']); | |
} | |
return -$b['weight']; | |
} | |
return isset($b['weight']) ? $a['weight'] - $b['weight'] : $a['weight']; | |
}); | |
return $requirements; | |
} | |
/** | |
* Extracts the highest severity from the requirements array. | |
* | |
* @param $requirements | |
* An array of requirements, in the same format as is returned by | |
* hook_requirements(). | |
* | |
* @return | |
* The highest severity in the array. | |
*/ | |
public function getMaxSeverity(&$requirements) { | |
$severity = static::REQUIREMENT_OK; | |
foreach ($requirements as $requirement) { | |
if (isset($requirement['severity'])) { | |
$severity = max($severity, $requirement['severity']); | |
} | |
} | |
return $severity; | |
} | |
/** | |
* Loads the contents of a menu block. | |
* | |
* This function is often a destination for these blocks. | |
* For example, 'admin/structure/types' needs to have a destination to be | |
* valid in the Drupal menu system, but too much information there might be | |
* hidden, so we supply the contents of the block. | |
* | |
* @return array | |
* A render array suitable for drupal_render. | |
*/ | |
public function getBlockContents() { | |
// We hard-code the menu name here since otherwise a link in the tools menu | |
// or elsewhere could give us a blank block. | |
$link = $this->menuActiveTrail->getActiveLink('admin'); | |
if ($link && $content = $this->getAdminBlock($link)) { | |
$output = array( | |
'#theme' => 'admin_block_content', | |
'#content' => $content, | |
); | |
} | |
else { | |
$output = array( | |
'#markup' => t('You do not have any administrative items.'), | |
); | |
} | |
return $output; | |
} | |
/** | |
* Provide a single block on the administration overview page. | |
* | |
* @param \Drupal\Core\Menu\MenuLinkInterface $instance | |
* The menu item to be displayed. | |
* | |
* @return array | |
* An array of menu items, as expected by admin-block-content.html.twig. | |
*/ | |
public function getAdminBlock(MenuLinkInterface $instance) { | |
$content = array(); | |
// Only find the children of this link. | |
$link_id = $instance->getPluginId(); | |
$parameters = new MenuTreeParameters(); | |
$parameters->setRoot($link_id)->excludeRoot()->setTopLevelOnly()->onlyEnabledLinks(); | |
$tree = $this->menuTree->load(NULL, $parameters); | |
$manipulators = array( | |
array('callable' => 'menu.default_tree_manipulators:checkAccess'), | |
array('callable' => 'menu.default_tree_manipulators:generateIndexAndSort'), | |
); | |
$tree = $this->menuTree->transform($tree, $manipulators); | |
foreach ($tree as $key => $element) { | |
// Only render accessible links. | |
if (!$element->access->isAllowed()) { | |
// @todo Bubble cacheability metadata of both accessible and | |
// inaccessible links. Currently made impossible by the way admin | |
// blocks are rendered. | |
continue; | |
} | |
/** @var $link \Drupal\Core\Menu\MenuLinkInterface */ | |
$link = $element->link; | |
$content[$key]['title'] = $link->getTitle(); | |
$content[$key]['options'] = $link->getOptions(); | |
$content[$key]['description'] = $link->getDescription(); | |
$content[$key]['url'] = $link->getUrlObject(); | |
} | |
ksort($content); | |
return $content; | |
} | |
} |