Issue #1770172 by netsensei, webflo, sun, linclark: Convert email module...

Issue #1770172 by netsensei, webflo, sun, linclark: Convert email module widgets and formatters to Plugin system.

core/modules/field/modules/email/email.info

@@ -4,4 +4,3 @@ package = Core
 version = VERSION
 core = 8.x
 dependencies[] = field
-dependencies[] = text

core/modules/field/modules/email/email.module

@@ -27,72 +27,32 @@ function email_field_info() {
       'label' => t('E-mail'),
       'description' => t('This field stores an e-mail address in the database.'),
       'default_widget' => 'email_default',
-      'default_formatter' => 'text_plain',
+      'default_formatter' => 'email_mailto',
     ),
   );
 }
 
 /**
- * Implements hook_field_is_empty().
- */
-function email_field_is_empty($item, $field) {
-  return !isset($item['value']) || $item['value'] === '';
-}
-
-/**
- * Implements hook_field_widget_info().
- */
-function email_field_widget_info() {
-  return array(
-    'email_default' => array(
-      'label' => t('E-mail'),
-      'field types' => array('email'),
-    ),
-  );
-}
-
-/**
- * Implements hook_field_widget_form().
+ * Implements hook_field_info_alter().
  */
-function email_field_widget_form(&$form, &$form_state, $field, $instance, $langcode, $items, $delta, $element) {
-  $element['value'] = $element + array(
-    '#type' => 'email',
-    '#default_value' => isset($items[$delta]['value']) ? $items[$delta]['value'] : NULL,
-  );
-  return $element;
-
+function email_field_info_alter(&$info) {
+  if (module_exists('text')) {
+    $info['email']['default_formatter'] = 'text_plain';
+  }
 }
 
 /**
- * Implements hook_field_formatter_info().
+ * Implements hook_field_is_empty().
  */
-function email_field_formatter_info() {
-  return array(
-    'email_mailto' => array(
-      'label' => t('Mailto link'),
-      'field types' => array('email'),
-    ),
-  );
+function email_field_is_empty($item, $field) {
+  return !isset($item['value']) || $item['value'] === '';
 }
 
 /**
  * Implements hook_field_formatter_info_alter().
  */
 function email_field_formatter_info_alter(&$info) {
-  $info['text_plain']['field types'][] = 'email';
-}
-
-/**
- * Implements hook_field_formatter_view().
- */
-function email_field_formatter_view($entity_type, $entity, $field, $instance, $langcode, $items, $display) {
-  $element = array();
-  foreach ($items as $delta => $item) {
-    $element[$delta] = array(
-      '#type' => 'link',
-      '#title' => $item['value'],
-      '#href' => 'mailto:' . $item['value'],
-    );
+  if (isset($info['text_plain'])) {
+    $info['text_plain']['field_types'][] = 'email';
   }
-  return $element;
 }

core/modules/field/modules/email/lib/Drupal/email/Plugin/field/formatter/MailToFormatter.php

+<?php
+
+/**
+ * @file
+ * Definition of Drupal\email\Plugin\field\formatter\MailToFormatter.
+ */
+
+namespace Drupal\email\Plugin\field\formatter;
+
+use Drupal\Core\Annotation\Plugin;
+use Drupal\Core\Annotation\Translation;
+use Drupal\field\Plugin\Type\Formatter\FormatterBase;
+use Drupal\Core\Entity\EntityInterface;
+
+/**
+ * Plugin implementation of the 'email_mailto' formatter.
+ *
+ * @Plugin(
+ *   id = "email_mailto",
+ *   module = "email",
+ *   label = @Translation("Email"),
+ *   field_types = {
+ *     "email"
+ *   }
+ * )
+ */
+class MailToFormatter extends FormatterBase {
+
+  /**
+   * Implements Drupal\field\Plugin\Type\Formatter\FormatterInterface::viewElements().
+   */
+  public function viewElements(EntityInterface $entity, $langcode, array $items) {
+    $elements = array();
+
+    foreach ($items as $delta => $item) {
+      $elements[$delta] = array(
+        '#type' => 'link',
+        '#title' => $item['value'],
+        '#href' => 'mailto:' . $item['value'],
+      );
+    }
+
+    return $elements;
+  }
+
+}

core/modules/field/modules/email/lib/Drupal/email/Plugin/field/widget/EmailDefaultWidget.php

+<?php
+
+/**
+ * @file
+ * Definition of Drupal\email\Plugin\field\widget\EmailDefaultWidget.
+ */
+
+namespace Drupal\email\Plugin\field\widget;
+
+use Drupal\Core\Annotation\Plugin;
+use Drupal\Core\Annotation\Translation;
+use Drupal\field\Plugin\Type\Widget\WidgetBase;
+
+/**
+ * Plugin implementation of the 'email_default' widget.
+ *
+ * @Plugin(
+ *   id = "email_default",
+ *   module = "email",
+ *   label = @Translation("E-mail"),
+ *   field_types = {
+ *     "email"
+ *   }
+ * )
+ */
+class EmailDefaultWidget extends WidgetBase {
+
+  /**
+   * Implements Drupal\field\Plugin\Type\Widget\WidgetInterface::formElement().
+   */
+  public function formElement(array $items, $delta, array $element, $langcode, array &$form, array &$form_state) {
+    $element['value'] = $element + array(
+      '#type' => 'email',
+      '#default_value' => isset($items[$delta]['value']) ? $items[$delta]['value'] : NULL,
+    );
+    return $element;
+  }
+
+}