aleph1.co.uk Git - yaffs-website/blob - web/core/lib/Drupal/Core/Controller/TitleResolver.php

   1 <?php
   2
   3 namespace Drupal\Core\Controller;
   4
   5 use Drupal\Core\StringTranslation\StringTranslationTrait;
   6 use Drupal\Core\StringTranslation\TranslationInterface;
   7 use Symfony\Component\HttpFoundation\Request;
   8 use Symfony\Component\HttpKernel\Controller\ArgumentResolverInterface;
   9 use Symfony\Component\Routing\Route;
  10
  11 /**
  12  * Provides the default implementation of the title resolver interface.
  13  */
  14 class TitleResolver implements TitleResolverInterface {
  15   use StringTranslationTrait;
  16
  17   /**
  18    * The controller resolver.
  19    *
  20    * @var \Drupal\Core\Controller\ControllerResolverInterface
  21    */
  22   protected $controllerResolver;
  23
  24   /**
  25    * The argument resolver.
  26    *
  27    * @var \Symfony\Component\HttpKernel\Controller\ArgumentResolverInterface
  28    */
  29   protected $argumentResolver;
  30
  31   /**
  32    * Constructs a TitleResolver instance.
  33    *
  34    * @param \Drupal\Core\Controller\ControllerResolverInterface $controller_resolver
  35    *   The controller resolver.
  36    * @param \Drupal\Core\StringTranslation\TranslationInterface $string_translation
  37    *   The translation manager.
  38    * @param \Symfony\Component\HttpKernel\Controller\ArgumentResolverInterface $argument_resolver
  39    *   The argument resolver.
  40    */
  41   public function __construct(ControllerResolverInterface $controller_resolver, TranslationInterface $string_translation, ArgumentResolverInterface $argument_resolver) {
  42     $this->controllerResolver = $controller_resolver;
  43     $this->stringTranslation = $string_translation;
  44     $this->argumentResolver = $argument_resolver;
  45   }
  46
  47   /**
  48    * {@inheritdoc}
  49    */
  50   public function getTitle(Request $request, Route $route) {
  51     $route_title = NULL;
  52     // A dynamic title takes priority. Route::getDefault() returns NULL if the
  53     // named default is not set.  By testing the value directly, we also avoid
  54     // trying to use empty values.
  55     if ($callback = $route->getDefault('_title_callback')) {
  56       $callable = $this->controllerResolver->getControllerFromDefinition($callback);
  57       $arguments = $this->argumentResolver->getArguments($request, $callable);
  58       $route_title = call_user_func_array($callable, $arguments);
  59     }
  60     elseif ($title = $route->getDefault('_title')) {
  61       $options = [];
  62       if ($context = $route->getDefault('_title_context')) {
  63         $options['context'] = $context;
  64       }
  65       $args = [];
  66       if (($raw_parameters = $request->attributes->get('_raw_variables'))) {
  67         foreach ($raw_parameters->all() as $key => $value) {
  68           $args['@' . $key] = $value;
  69           $args['%' . $key] = $value;
  70         }
  71       }
  72       if ($title_arguments = $route->getDefault('_title_arguments')) {
  73         $args = array_merge($args, (array) $title_arguments);
  74       }
  75
  76       // Fall back to a static string from the route.
  77       $route_title = $this->t($title, $args, $options);
  78     }
  79     return $route_title;
  80   }
  81
  82 }