diff core/lib/Drupal/Core/Entity/DependencyTrait.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/lib/Drupal/Core/Entity/DependencyTrait.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,72 @@
+<?php
+
+namespace Drupal\Core\Entity;
+
+/**
+ * Provides a trait for managing an object's dependencies.
+ */
+trait DependencyTrait {
+
+  /**
+   * The object's dependencies.
+   *
+   * @var array
+   */
+  protected $dependencies = [];
+
+  /**
+   * Adds a dependency.
+   *
+   * @param string $type
+   *   Type of dependency being added: 'module', 'theme', 'config', 'content'.
+   * @param string $name
+   *   If $type is 'module' or 'theme', the name of the module or theme. If
+   *   $type is 'config' or 'content', the result of
+   *   EntityInterface::getConfigDependencyName().
+   *
+   * @see \Drupal\Core\Entity\EntityInterface::getConfigDependencyName()
+   *
+   * @return $this
+   */
+  protected function addDependency($type, $name) {
+    if (empty($this->dependencies[$type])) {
+      $this->dependencies[$type] = [$name];
+      if (count($this->dependencies) > 1) {
+        // Ensure a consistent order of type keys.
+        ksort($this->dependencies);
+      }
+    }
+    elseif (!in_array($name, $this->dependencies[$type])) {
+      $this->dependencies[$type][] = $name;
+      // Ensure a consistent order of dependency names.
+      sort($this->dependencies[$type], SORT_FLAG_CASE);
+    }
+    return $this;
+  }
+
+  /**
+   * Adds multiple dependencies.
+   *
+   * @param array $dependencies
+   *   An array of dependencies keyed by the type of dependency. One example:
+   *   @code
+   *   array(
+   *     'module' => array(
+   *       'node',
+   *       'field',
+   *       'image',
+   *     ),
+   *   );
+   *   @endcode
+   *
+   * @see \Drupal\Core\Entity\DependencyTrait::addDependency
+   */
+  protected function addDependencies(array $dependencies) {
+    foreach ($dependencies as $dependency_type => $list) {
+      foreach ($list as $name) {
+        $this->addDependency($dependency_type, $name);
+      }
+    }
+  }
+
+}