Chris@5: {% import 'lib/di.twig' as di %}
Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\{{ machine_name }}\Plugin\views\argument_default;
Chris@0: 
Chris@5: {% sort %}
Chris@0: use Drupal\Core\Cache\Cache;
Chris@0: use Drupal\Core\Cache\CacheableDependencyInterface;
Chris@5:   {% if configurable %}
Chris@0: use Drupal\Core\Form\FormStateInterface;
Chris@5:   {% endif %}
Chris@0: use Drupal\views\Plugin\views\argument_default\ArgumentDefaultPluginBase;
Chris@5:   {% if services %}
Chris@5: {{ di.use(services) }}
Chris@0: use Symfony\Component\DependencyInjection\ContainerInterface;
Chris@5:   {% endif %}
Chris@5: {% endsort %}
Chris@0: 
Chris@0: /**
Chris@5:  * {{ plugin_label }} argument default plugin.
Chris@0:  *
Chris@0:  * @ViewsArgumentDefault(
Chris@0:  *   id = "{{ plugin_id }}",
Chris@0:  *   title = @Translation("{{ plugin_label }}")
Chris@0:  * )
Chris@0:  */
Chris@0: class {{ class }} extends ArgumentDefaultPluginBase implements CacheableDependencyInterface {
Chris@0: 
Chris@5: {% if services %}
Chris@5: {{ di.properties(services) }}
Chris@0: 
Chris@0:   /**
Chris@0:    * Constructs a new {{ class }} instance.
Chris@0:    *
Chris@0:    * @param array $configuration
Chris@5:    *   The plugin configuration, i.e. an array with configuration values keyed
Chris@5:    *   by configuration option name. The special key 'context' may be used to
Chris@5:    *   initialize the defined contexts by setting it to an array of context
Chris@5:    *   values keyed by context names.
Chris@0:    * @param string $plugin_id
Chris@0:    *   The plugin_id for the plugin instance.
Chris@0:    * @param mixed $plugin_definition
Chris@0:    *   The plugin implementation definition.
Chris@5: {{ di.annotation(services) }}
Chris@0:    */
Chris@5:   public function __construct(array $configuration, $plugin_id, $plugin_definition, {{ di.signature(services) }}) {
Chris@0:     parent::__construct($configuration, $plugin_id, $plugin_definition);
Chris@5: {{ di.assignment(services) }}
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
Chris@0:     return new static(
Chris@0:       $configuration,
Chris@0:       $plugin_id,
Chris@0:       $plugin_definition,
Chris@5: {{ di.container(services) }}
Chris@0:     );
Chris@0:   }
Chris@0: 
Chris@5: {% endif %}
Chris@5: {% if configurable %}
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   protected function defineOptions() {
Chris@0:     $options = parent::defineOptions();
Chris@5:     $options['example'] = ['default' => ''];
Chris@0:     return $options;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function buildOptionsForm(&$form, FormStateInterface $form_state) {
Chris@5:     $form['example'] = [
Chris@0:       '#type' => 'textfield',
Chris@5:       '#title' => $this->t('Example'),
Chris@5:       '#default_value' => $this->options['example'],
Chris@0:     ];
Chris@0:   }
Chris@0: 
Chris@5: {% endif %}
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getArgument() {
Chris@0: 
Chris@0:     // @DCG
Chris@0:     // Here is the place where you should create a default argument for the
Chris@0:     // contextual filter. The source of this argument depends on your needs.
Chris@0:     // For example, you can extract the value from the URL or fetch it from
Chris@0:     // some fields of the current viewed entity.
Chris@5:     $argument = 123;
Chris@0: 
Chris@0:     return $argument;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getCacheMaxAge() {
Chris@0:     return Cache::PERMANENT;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getCacheContexts() {
Chris@5:     // @DCG Use 'url' context if the argument comes from URL.
Chris@5:     return [];
Chris@0:   }
Chris@0: 
Chris@0: }