diff core/lib/Drupal/Core/ImageToolkit/ImageToolkitManager.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/lib/Drupal/Core/ImageToolkit/ImageToolkitManager.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,101 @@
+<?php
+
+namespace Drupal\Core\ImageToolkit;
+
+use Drupal\Core\Cache\CacheBackendInterface;
+use Drupal\Core\Config\ConfigFactoryInterface;
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\Plugin\DefaultPluginManager;
+
+/**
+ * Manages image toolkit plugins.
+ *
+ * @see \Drupal\Core\ImageToolkit\Annotation\ImageToolkit
+ * @see \Drupal\Core\ImageToolkit\ImageToolkitInterface
+ * @see \Drupal\Core\ImageToolkit\ImageToolkitBase
+ * @see plugin_api
+ */
+class ImageToolkitManager extends DefaultPluginManager {
+
+  /**
+   * The config factory.
+   *
+   * @var \Drupal\Core\Config\ConfigFactoryInterface
+   */
+  protected $configFactory;
+
+  /**
+   * Constructs the ImageToolkitManager object.
+   *
+   * @param \Traversable $namespaces
+   *   An object that implements \Traversable which contains the root paths
+   *   keyed by the corresponding namespace to look for plugin implementations.
+   * @param \Drupal\Core\Cache\CacheBackendInterface $cache_backend
+   *   Cache backend instance to use.
+   * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
+   *   The module handler.
+   * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
+   *   The config factory.
+   */
+  public function __construct(\Traversable $namespaces, CacheBackendInterface $cache_backend, ModuleHandlerInterface $module_handler, ConfigFactoryInterface $config_factory) {
+    parent::__construct('Plugin/ImageToolkit', $namespaces, $module_handler, 'Drupal\Core\ImageToolkit\ImageToolkitInterface', 'Drupal\Core\ImageToolkit\Annotation\ImageToolkit');
+
+    $this->setCacheBackend($cache_backend, 'image_toolkit_plugins');
+    $this->configFactory = $config_factory;
+  }
+
+  /**
+   * Gets the default image toolkit ID.
+   *
+   * @return string|bool
+   *   ID of the default toolkit, or FALSE on error.
+   */
+  public function getDefaultToolkitId() {
+    $toolkit_id = $this->configFactory->get('system.image')->get('toolkit');
+    $toolkits = $this->getAvailableToolkits();
+
+    if (!isset($toolkits[$toolkit_id]) || !class_exists($toolkits[$toolkit_id]['class'])) {
+      // The selected toolkit isn't available so return the first one found. If
+      // none are available this will return FALSE.
+      reset($toolkits);
+      $toolkit_id = key($toolkits);
+    }
+
+    return $toolkit_id;
+  }
+
+  /**
+   * Gets the default image toolkit.
+   *
+   * @return \Drupal\Core\ImageToolkit\ImageToolkitInterface
+   *   Object of the default toolkit, or FALSE on error.
+   */
+  public function getDefaultToolkit() {
+    if ($toolkit_id = $this->getDefaultToolkitId()) {
+      return $this->createInstance($toolkit_id);
+    }
+    return FALSE;
+  }
+
+  /**
+   * Gets a list of available toolkits.
+   *
+   * @return array
+   *   An array with the toolkit names as keys and the descriptions as values.
+   */
+  public function getAvailableToolkits() {
+    // Use plugin system to get list of available toolkits.
+    $toolkits = $this->getDefinitions();
+
+    $output = [];
+    foreach ($toolkits as $id => $definition) {
+      // Only allow modules that aren't marked as unavailable.
+      if (call_user_func($definition['class'] . '::isAvailable')) {
+        $output[$id] = $definition;
+      }
+    }
+
+    return $output;
+  }
+
+}