Issue #3421008 by el7cosmos, sorlov, smustgrave, larowlan, alexpott, quietone: Convert ViewsExposedForm plugin discovery to attributes

(cherry picked from commit 4586e9fc62)

core/modules/views/src/Attribute/ViewsExposedForm.php

@@ -0,0 +1,61 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\views\Attribute;
+
+use Drupal\Component\Plugin\Attribute\Plugin;
+use Drupal\Core\StringTranslation\TranslatableMarkup;
+
+/**
+ * Defines a Plugin attribute object for views exposed form plugins.
+ *
+ * @see \Drupal\views\Plugin\views\exposed_form\ExposedFormPluginInterface
+ * @see \Drupal\views\Plugin\views\exposed_form\ExposedFormPluginBase
+ *
+ * @ingroup views_exposed_form_plugins
+ */
+#[\Attribute(\Attribute::TARGET_CLASS)]
+class ViewsExposedForm extends Plugin {
+
+  /**
+   * Constructs a views exposed form attribute object.
+   *
+   * @param string $id
+   *   The plugin ID.
+   * @param \Drupal\Core\StringTranslation\TranslatableMarkup $title
+   *   The plugin title used in the views UI.
+   * @param \Drupal\Core\StringTranslation\TranslatableMarkup|null $short_title
+   *   (optional) The short title used in the views UI.
+   * @param \Drupal\Core\StringTranslation\TranslatableMarkup|null $help
+   *   (optional) A short help string; this is displayed in the views UI.
+   * @param string[]|null $display_types
+   *   (optional) The types of the display this plugin can be used with.
+   *   For example the Feed display defines the type 'feed', so only rss style
+   *   and row plugins can be used in the views UI.
+   * @param string[] $base
+   *   (optional) The base tables on which this exposed form plugin can be used.
+   *   If no base table is specified the plugin can be used with all tables.
+   * @param bool $no_ui
+   *   (optional) Whether the plugin should be not selectable in the UI.
+   *   If it's set to TRUE, you can still use it via the API in config files.
+   *   Defaults to FALSE.
+   * @param bool $register_theme
+   *   (optional) Whether to register a theme function automatically. Defaults
+   *   to TRUE.
+   * @param class-string|null $deriver
+   *   (optional) The deriver class.
+   */
+  public function __construct(
+    public readonly string $id,
+    public readonly TranslatableMarkup $title,
+    public readonly ?TranslatableMarkup $short_title = NULL,
+    public readonly ?TranslatableMarkup $help = NULL,
+    public readonly ?array $display_types = NULL,
+    public readonly array $base = [],
+    public readonly bool $no_ui = FALSE,
+    public readonly bool $register_theme = TRUE,
+    public readonly ?string $deriver = NULL
+  ) {}
+
+}

core/modules/views/src/Plugin/views/exposed_form/Basic.php

@@ -2,17 +2,19 @@
 
 namespace Drupal\views\Plugin\views\exposed_form;
 
+use Drupal\Core\StringTranslation\TranslatableMarkup;
+use Drupal\views\Attribute\ViewsExposedForm;
+
 /**
  * Exposed form plugin that provides a basic exposed form.
  *
  * @ingroup views_exposed_form_plugins
- *
- * @ViewsExposedForm(
- *   id = "basic",
- *   title = @Translation("Basic"),
- *   help = @Translation("Basic exposed form")
- * )
  */
+#[ViewsExposedForm(
+  id: 'basic',
+  title: new TranslatableMarkup('Basic'),
+  help: new TranslatableMarkup('Basic exposed form')
+)]
 class Basic extends ExposedFormPluginBase {
 
 }

core/modules/views/src/Plugin/views/exposed_form/InputRequired.php

@@ -3,19 +3,20 @@
 namespace Drupal\views\Plugin\views\exposed_form;
 
 use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\StringTranslation\TranslatableMarkup;
+use Drupal\views\Attribute\ViewsExposedForm;
 use Drupal\views\Views;
 
 /**
  * Exposed form plugin that provides an exposed form with required input.
  *
  * @ingroup views_exposed_form_plugins
- *
- * @ViewsExposedForm(
- *   id = "input_required",
- *   title = @Translation("Input required"),
- *   help = @Translation("An exposed form that only renders a view if the form contains user input.")
- * )
  */
+#[ViewsExposedForm(
+  id: 'input_required',
+  title: new TranslatableMarkup('Input required'),
+  help: new TranslatableMarkup('An exposed form that only renders a view if the form contains user input.')
+)]
 class InputRequired extends ExposedFormPluginBase {
 
   protected function defineOptions() {