Issue #2011018 by tim.plunkett: Reconcile entity forms and confirm forms.

core/lib/Drupal/Core/Entity/EntityConfirmFormBase.php

+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Core\Entity\EntityConfirmFormBase.
+ */
+
+namespace Drupal\Core\Entity;
+
+use Drupal\Core\Form\ConfirmFormInterface;
+use Symfony\Component\HttpFoundation\Request;
+
+/**
+ * Provides a generic base class for an entity-based confirmation form.
+ */
+abstract class EntityConfirmFormBase extends EntityFormController implements ConfirmFormInterface {
+
+  /**
+   * The request object.
+   *
+   * @var \Symfony\Component\HttpFoundation\Request
+   */
+  protected $request;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getDescription() {
+    return t('This action cannot be undone.');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getConfirmText() {
+    return t('Confirm');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getCancelText() {
+    return t('Cancel');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFormName() {
+    return 'confirm';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, array &$form_state, Request $request = NULL) {
+    $this->request = $request;
+    $form = parent::buildForm($form, $form_state);
+
+    $form['#attributes']['class'][] = 'confirmation';
+    $form['description'] = array('#markup' => $this->getDescription());
+    $form[$this->getFormName()] = array('#type' => 'hidden', '#value' => 1);
+
+    // By default, render the form using theme_confirm_form().
+    if (!isset($form['#theme'])) {
+      $form['#theme'] = 'confirm_form';
+    }
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function init(array &$form_state) {
+    parent::init($form_state);
+
+    drupal_set_title($this->getQuestion(), PASS_THROUGH);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function actions(array $form, array &$form_state) {
+    $actions = parent::actions($form, $form_state);
+    $actions['submit']['#value'] = $this->getConfirmText();
+    unset($actions['delete']);
+
+    $path = $this->getCancelPath();
+    // Prepare cancel link.
+    if ($this->request->query->has('destination')) {
+      $options = drupal_parse_url($this->request->query->get('destination'));
+    }
+    elseif (is_array($path)) {
+      $options = $path;
+    }
+    else {
+      $options = array('path' => $path);
+    }
+    $actions['cancel'] = array(
+      '#type' => 'link',
+      '#title' => $this->getCancelText(),
+      '#href' => $options['path'],
+      '#options' => $options,
+    );
+    return $actions;
+  }
+
+}

core/lib/Drupal/Core/Entity/EntityNGConfirmFormBase.php

+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Core\Entity\EntityNGConfirmFormBase.
+ */
+
+namespace Drupal\Core\Entity;
+
+use Drupal\Core\Form\ConfirmFormInterface;
+use Symfony\Component\HttpFoundation\Request;
+
+/**
+ * Provides a generic base class for an entity-based confirmation form.
+ */
+abstract class EntityNGConfirmFormBase extends EntityFormControllerNG implements ConfirmFormInterface {
+
+  /**
+   * The request object.
+   *
+   * @var \Symfony\Component\HttpFoundation\Request
+   */
+  protected $request;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getDescription() {
+    return t('This action cannot be undone.');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getConfirmText() {
+    return t('Confirm');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getCancelText() {
+    return t('Cancel');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFormName() {
+    return 'confirm';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, array &$form_state, Request $request = NULL) {
+    $this->request = $request;
+    $form = parent::buildForm($form, $form_state);
+
+    $form['#attributes']['class'][] = 'confirmation';
+    $form['description'] = array('#markup' => $this->getDescription());
+    $form[$this->getFormName()] = array('#type' => 'hidden', '#value' => 1);
+
+    // By default, render the form using theme_confirm_form().
+    if (!isset($form['#theme'])) {
+      $form['#theme'] = 'confirm_form';
+    }
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function init(array &$form_state) {
+    parent::init($form_state);
+
+    drupal_set_title($this->getQuestion(), PASS_THROUGH);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function actions(array $form, array &$form_state) {
+    $actions = parent::actions($form, $form_state);
+    $actions['submit']['#value'] = $this->getConfirmText();
+    unset($actions['delete']);
+
+    $path = $this->getCancelPath();
+    // Prepare cancel link.
+    if ($this->request->query->has('destination')) {
+      $options = drupal_parse_url($this->request->query->get('destination'));
+    }
+    elseif (is_array($path)) {
+      $options = $path;
+    }
+    else {
+      $options = array('path' => $path);
+    }
+    $actions['cancel'] = array(
+      '#type' => 'link',
+      '#title' => $this->getCancelText(),
+      '#href' => $options['path'],
+      '#options' => $options,
+    );
+    return $actions;
+  }
+
+}

core/lib/Drupal/Core/Form/ConfirmFormBase.php

@@ -7,80 +7,49 @@
 
 namespace Drupal\Core\Form;
 
+use Symfony\Component\HttpFoundation\Request;
+
 /**
  * Provides an generic base class for a confirmation form.
  */
-abstract class ConfirmFormBase implements FormInterface {
-
-  /**
-   * Returns the question to ask the user.
-   *
-   * @return string
-   *   The form question. The page title will be set to this value.
-   */
-  abstract protected function getQuestion();
-
-  /**
-   * Returns the page to go to if the user cancels the action.
-   *
-   * @return string|array
-   *   This can be either:
-   *   - A string containing a Drupal path.
-   *   - An associative array with a 'path' key. Additional array values are
-   *     passed as the $options parameter to l().
-   *   If the 'destination' query parameter is set in the URL when viewing a
-   *   confirmation form, that value will be used instead of this path.
-   */
-  abstract protected function getCancelPath();
+abstract class ConfirmFormBase implements ConfirmFormInterface {
 
   /**
-   * Returns additional text to display as a description.
-   *
-   * @return string
-   *   The form description.
+   * {@inheritdoc}
    */
-  protected function getDescription() {
+  public function getDescription() {
     return t('This action cannot be undone.');
   }
 
   /**
-   * Returns a caption for the button that confirms the action.
-   *
-   * @return string
-   *   The form confirmation text.
+   * {@inheritdoc}
    */
-  protected function getConfirmText() {
+  public function getConfirmText() {
     return t('Confirm');
   }
 
   /**
-   * Returns a caption for the link which cancels the action.
-   *
-   * @return string
-   *   The form cancellation text.
+   * {@inheritdoc}
    */
-  protected function getCancelText() {
+  public function getCancelText() {
     return t('Cancel');
   }
 
   /**
-   * Returns the internal name used to refer to the confirmation item.
-   *
-   * @return string
-   *   The internal form name.
+   * {@inheritdoc}
    */
-  protected function getFormName() {
+  public function getFormName() {
     return 'confirm';
   }
 
   /**
-   * Implements \Drupal\Core\Form\FormInterface::buildForm().
+   * {@inheritdoc}
    */
-  public function buildForm(array $form, array &$form_state) {
+  public function buildForm(array $form, array &$form_state, Request $request = NULL) {
     $path = $this->getCancelPath();
     // Prepare cancel link.
-    if (isset($_GET['destination'])) {
-      $options = drupal_parse_url($_GET['destination']);
+    if ($request->query->has('destination')) {
+      $options = drupal_parse_url($request->query->get('destination'));
     }
     elseif (is_array($path)) {
       $options = $path;
@@ -114,7 +83,7 @@ public function buildForm(array $form, array &$form_state) {
   }
 
   /**
-   * Implements \Drupal\Core\Form\FormInterface::validateForm().
+   * {@inheritdoc}
    */
   public function validateForm(array &$form, array &$form_state) {
   }

core/lib/Drupal/Core/Form/ConfirmFormInterface.php

+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Core\Form\ConfirmFormInterface.
+ */
+
+namespace Drupal\Core\Form;
+
+/**
+ * Defines the behavior a confirmation form.
+ */
+interface ConfirmFormInterface extends FormInterface {
+
+  /**
+   * Returns the question to ask the user.
+   *
+   * @return string
+   *   The form question. The page title will be set to this value.
+   */
+  public function getQuestion();
+
+  /**
+   * Returns the page to go to if the user cancels the action.
+   *
+   * @return string|array
+   *   This can be either:
+   *   - A string containing a Drupal path.
+   *   - An associative array with a 'path' key. Additional array values are
+   *     passed as the $options parameter to l().
+   *   If the 'destination' query parameter is set in the URL when viewing a
+   *   confirmation form, that value will be used instead of this path.
+   */
+  public function getCancelPath();
+
+  /**
+   * Returns additional text to display as a description.
+   *
+   * @return string
+   *   The form description.
+   */
+  public function getDescription();
+
+  /**
+   * Returns a caption for the button that confirms the action.
+   *
+   * @return string
+   *   The form confirmation text.
+   */
+  public function getConfirmText();
+
+  /**
+   * Returns a caption for the link which cancels the action.
+   *
+   * @return string
+   *   The form cancellation text.
+   */
+  public function getCancelText();
+
+  /**
+   * Returns the internal name used to refer to the confirmation item.
+   *
+   * @return string
+   *   The internal form name.
+   */
+  public function getFormName();
+
+}

core/modules/action/action.module

@@ -73,5 +73,6 @@ function action_menu() {
 function action_entity_info(&$entity_info) {
   $entity_info['action']['controllers']['form']['add'] = 'Drupal\action\ActionAddFormController';
   $entity_info['action']['controllers']['form']['edit'] = 'Drupal\action\ActionEditFormController';
+  $entity_info['action']['controllers']['form']['delete'] = 'Drupal\action\Form\ActionDeleteForm';
   $entity_info['action']['controllers']['list'] = 'Drupal\action\ActionListController';
 }

core/modules/action/action.routing.yml

@@ -22,7 +22,7 @@ action_admin_configure:
 action_delete:
   pattern: 'admin/config/system/actions/configure/{action}/delete'
   defaults:
-    _form: '\Drupal\action\Form\DeleteForm'
+    _entity_form: 'action.delete'
   requirements:
     _permission: 'administer actions'
 

core/modules/action/lib/Drupal/action/Form/DeleteForm.php → core/modules/action/lib/Drupal/action/Form/ActionDeleteForm.php

@@ -2,72 +2,47 @@
 
 /**
  * @file
- * Contains \Drupal\action\Form\DeleteForm.
+ * Contains \Drupal\action\Form\ActionDeleteForm.
  */
 
 namespace Drupal\action\Form;
 
-use Drupal\Core\Form\ConfirmFormBase;
-use Drupal\system\ActionConfigEntityInterface;
+use Drupal\Core\Entity\EntityConfirmFormBase;
 
 /**
  * Builds a form to delete an action.
  */
-class DeleteForm extends ConfirmFormBase {
-
-  /**
-   * The action to be deleted.
-   *
-   * @var \Drupal\system\ActionConfigEntityInterface
-   */
-  protected $action;
+class ActionDeleteForm extends EntityConfirmFormBase {
 
   /**
    * {@inheritdoc}
    */
-  protected function getQuestion() {
-    return t('Are you sure you want to delete the action %action?', array('%action' => $this->action->label()));
+  public function getQuestion() {
+    return t('Are you sure you want to delete the action %action?', array('%action' => $this->entity->label()));
   }
 
   /**
    * {@inheritdoc}
    */
-  protected function getConfirmText() {
+  public function getConfirmText() {
     return t('Delete');
   }
 
-
   /**
    * {@inheritdoc}
    */
-  protected function getCancelPath() {
+  public function getCancelPath() {
     return 'admin/config/system/actions';
   }
 
   /**
    * {@inheritdoc}
    */
-  public function getFormID() {
-    return 'action_admin_delete_form';
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  public function buildForm(array $form, array &$form_state, ActionConfigEntityInterface $action = NULL) {
-    $this->action = $action;
-
-    return parent::buildForm($form, $form_state);
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  public function submitForm(array &$form, array &$form_state) {
-    $this->action->delete();
+  public function submit(array $form, array &$form_state) {
+    $this->entity->delete();
 
-    watchdog('user', 'Deleted action %aid (%action)', array('%aid' => $this->action->id(), '%action' => $this->action->label()));
-    drupal_set_message(t('Action %action was deleted', array('%action' => $this->action->label())));
+    watchdog('user', 'Deleted action %aid (%action)', array('%aid' => $this->entity->id(), '%action' => $this->entity->label()));
+    drupal_set_message(t('Action %action was deleted', array('%action' => $this->entity->label())));
 
     $form_state['redirect'] = 'admin/config/system/actions';
   }

core/modules/aggregator/aggregator.module

@@ -370,27 +370,6 @@ function aggregator_save_category($edit) {
   }
 }
 
-/**
- * Removes all items from a feed.
- *
- * @param \Drupal\aggregator\Plugin\Core\Entity\Feed $feed
- *   An object describing the feed to be cleared.
- */
-function aggregator_remove(Feed $feed) {
-  // Call \Drupal\aggregator\Plugin\ProcessorInterface::remove() on all
-  // processors.
-  $manager = Drupal::service('plugin.manager.aggregator.processor');
-  foreach ($manager->getDefinitions() as $id => $definition) {
-    $manager->createInstance($id)->remove($feed);
-  }
-  // Reset feed.
-  $feed->checked->value = 0;
-  $feed->hash->value = '';
-  $feed->etag->value = '';
-  $feed->modified->value = 0;
-  $feed->save();
-}
-
 /**
  * Checks a news feed for new items.
  *

core/modules/aggregator/aggregator.routing.yml

@@ -15,14 +15,14 @@ aggregator_admin_settings:
 aggregator_feed_items_delete:
   pattern: '/admin/config/services/aggregator/remove/{aggregator_feed}'
   defaults:
-    _form: '\Drupal\aggregator\Form\FeedItemsDelete'
+    _entity_form: 'aggregator_feed.remove_items'
   requirements:
     _permission: 'administer news feeds'
 
 aggregator_feed_delete:
   pattern: '/admin/config/services/aggregator/delete/feed/{aggregator_feed}'
   defaults:
-    _form: '\Drupal\aggregator\Form\FeedDelete'
+    _entity_form: 'aggregator_feed.delete'
   requirements:
     _permission: 'administer news feeds'
 

core/modules/aggregator/lib/Drupal/aggregator/FeedInterface.php

@@ -14,4 +14,9 @@
  */
 interface FeedInterface extends ContentEntityInterface {
 
+  /**
+   * Removes all items from a feed.
+   */
+  public function removeItems();
+
 }

core/modules/aggregator/lib/Drupal/aggregator/Form/FeedDelete.php → core/modules/aggregator/lib/Drupal/aggregator/Form/FeedDeleteForm.php

 <?php
 /**
  * @file
- * Contains \Drupal\aggregator\Form\FeedDelete.
+ * Contains \Drupal\aggregator\Form\FeedDeleteForm.
  */
 
 namespace Drupal\aggregator\Form;
 
-
-use Drupal\Core\Form\ConfirmFormBase;
-use Drupal\aggregator\Plugin\Core\Entity\Feed;
+use Drupal\Core\Entity\EntityNGConfirmFormBase;
 
 /**
  * Provides a form for deleting a feed.
  */
-class FeedDelete extends ConfirmFormBase {
-
-  /**
-   * The feed the being deleted.
-   *
-   * @var \Drupal\aggregator\Plugin\Core\Entity\Feed
-   */
-  protected $feed;
+class FeedDeleteForm extends EntityNGConfirmFormBase {
 
   /**
    * {@inheritdoc}
    */
-  public function getFormID() {
-    return 'aggregator_feed_delete_form';
+  public function getQuestion() {
+    return t('Are you sure you want to delete the feed %feed?', array('%feed' => $this->entity->label()));
   }
 
   /**
    * {@inheritdoc}
    */
-  protected function getQuestion() {
-    return t('Are you sure you want to delete the feed %feed?', array('%feed' => $this->feed->label()));
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  protected function getCancelPath() {
+  public function getCancelPath() {
     return 'admin/config/services/aggregator';
   }
 
   /**
    * {@inheritdoc}
    */
-  protected function getConfirmText() {
+  public function getConfirmText() {
     return t('Delete');