#3455450: Rendered the NodeCharactersReadTime and view fields

Closes #3455450

src/Plugin/Field/NodeCharactersReadTime.php

+<?php
+
+namespace Drupal\node_read_time\Plugin\Field;
+
+use Drupal\Core\Field\FieldItemList;
+use Drupal\Core\TypedData\ComputedItemListTrait;
+
+/**
+ * Calculate the reading time with option "characters per minute" for the entity.
+ *
+ * @package Drupal\node_read_time\Plugin\Field
+ */
+class NodeCharactersReadTime extends FieldItemList {
+  use ComputedItemListTrait;
+
+  /**
+   * Computes the field value.
+   */
+  protected function computeValue(): void {
+    $entity = $this->getEntity();
+    $config = \Drupal::config('node_read_time.settings')
+      ->get('characters_reading_time')['container'];
+    $reading_time = NULL;
+    $entity_type = $entity->getType();
+    if (isset($config[$entity_type]) && $config[$entity_type]['is_activated']) {
+      $reading_time_service = \Drupal::service('node_read_time.reading_time');
+      $reading_time = $reading_time_service
+        ->collectWords($entity)
+        ->calculateReadingTime('characters')
+        ->getReadingTime();
+      // Clear the words variable.
+      $reading_time_service->setWords(0);
+    }
+    $this->list[0] = $this->createItem(0, $reading_time);
+  }
+
+}