diff core/modules/editor/src/Element.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/modules/editor/src/Element.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,118 @@
+<?php
+
+namespace Drupal\editor;
+
+use Drupal\editor\Entity\Editor;
+use Drupal\filter\Entity\FilterFormat;
+use Drupal\Component\Plugin\PluginManagerInterface;
+use Drupal\Core\Render\BubbleableMetadata;
+
+/**
+ * Defines a service for Text Editor's render elements.
+ */
+class Element {
+
+  /**
+   * The Text Editor plugin manager service.
+   *
+   * @var \Drupal\Component\Plugin\PluginManagerInterface
+   */
+  protected $pluginManager;
+
+  /**
+   * Constructs a new Element object.
+   *
+   * @param \Drupal\Component\Plugin\PluginManagerInterface $plugin_manager
+   *   The Text Editor plugin manager service.
+   */
+  public function __construct(PluginManagerInterface $plugin_manager) {
+    $this->pluginManager = $plugin_manager;
+  }
+
+  /**
+   * Additional #pre_render callback for 'text_format' elements.
+   */
+  public function preRenderTextFormat(array $element) {
+    // Allow modules to programmatically enforce no client-side editor by
+    // setting the #editor property to FALSE.
+    if (isset($element['#editor']) && !$element['#editor']) {
+      return $element;
+    }
+
+    // filter_process_format() copies properties to the expanded 'value' child
+    // element, including the #pre_render property. Skip this text format
+    // widget, if it contains no 'format'.
+    if (!isset($element['format'])) {
+      return $element;
+    }
+    $format_ids = array_keys($element['format']['format']['#options']);
+
+    // Early-return if no text editor is associated with any of the text formats.
+    $editors = Editor::loadMultiple($format_ids);
+    foreach ($editors as $key => $editor) {
+      $definition = $this->pluginManager->getDefinition($editor->getEditor());
+      if (!in_array($element['#base_type'], $definition['supported_element_types'])) {
+        unset($editors[$key]);
+      }
+    }
+    if (count($editors) === 0) {
+      return $element;
+    }
+
+    // Use a hidden element for a single text format.
+    $field_id = $element['value']['#id'];
+    if (!$element['format']['format']['#access']) {
+      // Use the first (and only) available text format.
+      $format_id = $format_ids[0];
+      $element['format']['editor'] = [
+        '#type' => 'hidden',
+        '#name' => $element['format']['format']['#name'],
+        '#value' => $format_id,
+        '#attributes' => [
+          'data-editor-for' => $field_id,
+        ],
+      ];
+    }
+    // Otherwise, attach to text format selector.
+    else {
+      $element['format']['format']['#attributes']['class'][] = 'editor';
+      $element['format']['format']['#attributes']['data-editor-for'] = $field_id;
+    }
+
+    // Hide the text format's filters' guidelines of those text formats that have
+    // a text editor associated: they're rather useless when using a text editor.
+    foreach ($editors as $format_id => $editor) {
+      $element['format']['guidelines'][$format_id]['#access'] = FALSE;
+    }
+
+    // Attach Text Editor module's (this module) library.
+    $element['#attached']['library'][] = 'editor/drupal.editor';
+
+    // Attach attachments for all available editors.
+    $element['#attached'] = BubbleableMetadata::mergeAttachments($element['#attached'], $this->pluginManager->getAttachments($format_ids));
+
+    // Apply XSS filters when editing content if necessary. Some types of text
+    // editors cannot guarantee that the end user won't become a victim of XSS.
+    if (!empty($element['value']['#value'])) {
+      $original = $element['value']['#value'];
+      $format = FilterFormat::load($element['format']['format']['#value']);
+
+      // Ensure XSS-safety for the current text format/editor.
+      $filtered = editor_filter_xss($original, $format);
+      if ($filtered !== FALSE) {
+        $element['value']['#value'] = $filtered;
+      }
+
+      // Only when the user has access to multiple text formats, we must add data-
+      // attributes for the original value and change tracking, because they are
+      // only necessary when the end user can switch between text formats/editors.
+      if ($element['format']['format']['#access']) {
+        $element['value']['#attributes']['data-editor-value-is-changed'] = 'false';
+        $element['value']['#attributes']['data-editor-value-original'] = $original;
+      }
+    }
+
+    return $element;
+  }
+
+}