Node Is Published Condition (#151)

* Create NodeIsPublished.php

* fix partial commit

* phpcbf

* fix constructors

src/Plugin/Condition/NodeIsPublished.php

@@ -0,0 +1,94 @@
+<?php
+
+namespace Drupal\islandora\Plugin\Condition;
+
+use Drupal\Core\Condition\ConditionPluginBase;
+use Drupal\Core\Entity\EntityTypeManager;
+use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Provides an 'Is Published' condition for nodes.
+ *
+ * @Condition(
+ *   id = "node_is_published",
+ *   label = @Translation("Node is published"),
+ *   context = {
+ *     "node" = @ContextDefinition("entity:node", required = TRUE , label = @Translation("node"))
+ *   }
+ * )
+ */
+class NodeIsPublished extends ConditionPluginBase implements ContainerFactoryPluginInterface {
+
+  /**
+   * Term storage.
+   *
+   * @var \Drupal\Core\Entity\EntityTypeManager
+   */
+  protected $entityTypeManager;
+
+  /**
+   * Constructor.
+   *
+   * @param array $configuration
+   *   The plugin configuration, i.e. an array with configuration values keyed
+   *   by configuration option name. The special key 'context' may be used to
+   *   initialize the defined contexts by setting it to an array of context
+   *   values keyed by context names.
+   * @param string $plugin_id
+   *   The plugin_id for the plugin instance.
+   * @param mixed $plugin_definition
+   *   The plugin implementation definition.
+   * @param \Drupal\Core\Entity\EntityTypeManager $entity_type_manager
+   *   Entity type manager.
+   */
+  public function __construct(
+    array $configuration,
+    $plugin_id,
+    $plugin_definition,
+    EntityTypeManager $entity_type_manager
+  ) {
+    parent::__construct($configuration, $plugin_id, $plugin_definition);
+    $this->entityTypeManager = $entity_type_manager;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+    return new static(
+      $configuration,
+      $plugin_id,
+      $plugin_definition,
+      $container->get('entity_type.manager')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function evaluate() {
+    $node = $this->getContextValue('node');
+    if (!$node  && !$this->isNegated()) {
+      return FALSE;
+    }
+    if ($node->isPublished() && !$this->isNegated()) {
+      return TRUE;
+    }
+
+    return FALSE;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function summary() {
+    if (!empty($this->configuration['negate'])) {
+      return $this->t('The node is not published.');
+    }
+    else {
+      return $this->t('The node is published.');
+    }
+  }
+
+}