diff core/modules/views/src/Plugin/ViewsHandlerManager.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/modules/views/src/Plugin/ViewsHandlerManager.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,136 @@
+<?php
+
+namespace Drupal\views\Plugin;
+
+use Drupal\Component\Plugin\FallbackPluginManagerInterface;
+use Drupal\Core\Cache\CacheBackendInterface;
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\Plugin\DefaultPluginManager;
+use Drupal\views\ViewsData;
+use Symfony\Component\DependencyInjection\Container;
+use Drupal\views\Plugin\views\HandlerBase;
+
+/**
+ * Plugin type manager for all views handlers.
+ */
+class ViewsHandlerManager extends DefaultPluginManager implements FallbackPluginManagerInterface {
+
+  /**
+   * The views data cache.
+   *
+   * @var \Drupal\views\ViewsData
+   */
+  protected $viewsData;
+
+  /**
+   * The handler type.
+   *
+   * @var string
+   *
+   * @see \Drupal\views\ViewExecutable::getHandlerTypes().
+   */
+  protected $handlerType;
+
+  /**
+   * Constructs a ViewsHandlerManager object.
+   *
+   * @param string $handler_type
+   *   The plugin type, for example filter.
+   * @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\views\ViewsData $views_data
+   *   The views data cache.
+   * @param \Drupal\Core\Cache\CacheBackendInterface $cache_backend
+   *   Cache backend instance to use.
+   * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
+   *   The module handler to invoke the alter hook with.
+   */
+  public function __construct($handler_type, \Traversable $namespaces, ViewsData $views_data, CacheBackendInterface $cache_backend, ModuleHandlerInterface $module_handler) {
+    $plugin_definition_annotation_name = 'Drupal\views\Annotation\Views' . Container::camelize($handler_type);
+    $plugin_interface = 'Drupal\views\Plugin\views\ViewsHandlerInterface';
+    if ($handler_type == 'join') {
+      $plugin_interface = 'Drupal\views\Plugin\views\join\JoinPluginInterface';
+    }
+    parent::__construct("Plugin/views/$handler_type", $namespaces, $module_handler, $plugin_interface, $plugin_definition_annotation_name);
+
+    $this->setCacheBackend($cache_backend, "views:$handler_type");
+    $this->alterInfo('views_plugins_' . $handler_type);
+
+    $this->viewsData = $views_data;
+    $this->handlerType = $handler_type;
+    $this->defaults = [
+      'plugin_type' => $handler_type,
+    ];
+  }
+
+  /**
+   * Fetches a handler from the data cache.
+   *
+   * @param array $item
+   *   An associative array representing the handler to be retrieved:
+   *   - table: The name of the table containing the handler.
+   *   - field: The name of the field the handler represents.
+   * @param string|null $override
+   *   (optional) Override the actual handler object with this plugin ID. Used for
+   *   aggregation when the handler is redirected to the aggregation handler.
+   *
+   * @return \Drupal\views\Plugin\views\ViewsHandlerInterface
+   *   An instance of a handler object. May be a broken handler instance.
+   */
+  public function getHandler($item, $override = NULL) {
+    $table = $item['table'];
+    $field = $item['field'];
+    // Get the plugin manager for this type.
+    $data = $this->viewsData->get($table);
+
+    if (isset($data[$field][$this->handlerType])) {
+      $definition = $data[$field][$this->handlerType];
+      foreach (['group', 'title', 'title short', 'label', 'help', 'real field', 'real table', 'entity type', 'entity field'] as $key) {
+        if (!isset($definition[$key])) {
+          // First check the field level.
+          if (!empty($data[$field][$key])) {
+            $definition[$key] = $data[$field][$key];
+          }
+          // Then if that doesn't work, check the table level.
+          elseif (!empty($data['table'][$key])) {
+            $definition_key = $key === 'entity type' ? 'entity_type' : $key;
+            $definition[$definition_key] = $data['table'][$key];
+          }
+        }
+      }
+
+      // @todo This is crazy. Find a way to remove the override functionality.
+      $plugin_id = $override ?: $definition['id'];
+      // Try to use the overridden handler.
+      $handler = $this->createInstance($plugin_id, $definition);
+      if ($override && method_exists($handler, 'broken') && $handler->broken()) {
+        $handler = $this->createInstance($definition['id'], $definition);
+      }
+      return $handler;
+    }
+
+    // Finally, use the 'broken' handler.
+    return $this->createInstance('broken', ['original_configuration' => $item]);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function createInstance($plugin_id, array $configuration = []) {
+    $instance = parent::createInstance($plugin_id, $configuration);
+    if ($instance instanceof HandlerBase) {
+      $instance->setModuleHandler($this->moduleHandler);
+      $instance->setViewsData($this->viewsData);
+    }
+    return $instance;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFallbackPluginId($plugin_id, array $configuration = []) {
+    return 'broken';
+  }
+
+}