Updated Drupal to 8.6. This goes with the following updates because it's possible...

[yaffs-website] / web / core / lib / Drupal / Component / Plugin / Definition / ContextAwarePluginDefinitionTrait.php

diff --git a/web/core/lib/Drupal/Component/Plugin/Definition/ContextAwarePluginDefinitionTrait.php b/web/core/lib/Drupal/Component/Plugin/Definition/ContextAwarePluginDefinitionTrait.php
new file mode 100644 (file)
index 0000000..54b8e5f
--- /dev/null
+++ b/web/core/lib/Drupal/Component/Plugin/Definition/ContextAwarePluginDefinitionTrait.php
@@ -0,0 +1,60 @@
+<?php
+
+namespace Drupal\Component\Plugin\Definition;
+
+use Drupal\Component\Plugin\Context\ContextDefinitionInterface;
+use Drupal\Component\Plugin\Exception\ContextException;
+
+/**
+ * Provides a trait for context-aware object-based plugin definitions.
+ */
+trait ContextAwarePluginDefinitionTrait {
+
+  /**
+   * The context definitions for this plugin definition.
+   *
+   * @var \Drupal\Component\Plugin\Context\ContextDefinitionInterface[]
+   */
+  protected $contextDefinitions = [];
+
+  /**
+   * Implements \Drupal\Component\Plugin\Definition\ContextAwarePluginDefinitionInterface::hasContextDefinition().
+   */
+  public function hasContextDefinition($name) {
+    return array_key_exists($name, $this->contextDefinitions);
+  }
+
+  /**
+   * Implements \Drupal\Component\Plugin\Definition\ContextAwarePluginDefinitionInterface::getContextDefinitions().
+   */
+  public function getContextDefinitions() {
+    return $this->contextDefinitions;
+  }
+
+  /**
+   * Implements \Drupal\Component\Plugin\Definition\ContextAwarePluginDefinitionInterface::getContextDefinition().
+   */
+  public function getContextDefinition($name) {
+    if ($this->hasContextDefinition($name)) {
+      return $this->contextDefinitions[$name];
+    }
+    throw new ContextException($this->id() . " does not define a '$name' context");
+  }
+
+  /**
+   * Implements \Drupal\Component\Plugin\Definition\ContextAwarePluginDefinitionInterface::addContextDefinition().
+   */
+  public function addContextDefinition($name, ContextDefinitionInterface $definition) {
+    $this->contextDefinitions[$name] = $definition;
+    return $this;
+  }
+
+  /**
+   * Implements \Drupal\Component\Plugin\Definition\ContextAwarePluginDefinitionInterface::removeContextDefinition().
+   */
+  public function removeContextDefinition($name) {
+    unset($this->contextDefinitions[$name]);
+    return $this;
+  }
+
+}