diff core/modules/ckeditor/src/CKEditorPluginManager.php @ 0:c75dbcec494b

Initial commit from drush-created site

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/modules/ckeditor/src/CKEditorPluginManager.php	Thu Jul 05 14:24:15 2018 +0000
@@ -0,0 +1,221 @@
+<?php
+
+namespace Drupal\ckeditor;
+
+use Drupal\Component\Utility\NestedArray;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Plugin\DefaultPluginManager;
+use Drupal\Core\Cache\CacheBackendInterface;
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\editor\Entity\Editor;
+
+/**
+ * Provides a CKEditor Plugin plugin manager.
+ *
+ * @see \Drupal\ckeditor\CKEditorPluginInterface
+ * @see \Drupal\ckeditor\CKEditorPluginButtonsInterface
+ * @see \Drupal\ckeditor\CKEditorPluginContextualInterface
+ * @see \Drupal\ckeditor\CKEditorPluginConfigurableInterface
+ * @see \Drupal\ckeditor\CKEditorPluginCssInterface
+ * @see \Drupal\ckeditor\CKEditorPluginBase
+ * @see \Drupal\ckeditor\Annotation\CKEditorPlugin
+ * @see plugin_api
+ */
+class CKEditorPluginManager extends DefaultPluginManager {
+
+  /**
+   * Constructs a CKEditorPluginManager object.
+   *
+   * @param \Traversable $namespaces
+   *   An object that implements \Traversable which contains the root paths
+   *   keyed by the corresponding namespace to look for plugin implementations.
+   * @param \Drupal\Core\Cache\CacheBackendInterface $cache_backend
+   *   Cache backend instance to use.
+   * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
+   *   The module handler to invoke the alter hook with.
+   */
+  public function __construct(\Traversable $namespaces, CacheBackendInterface $cache_backend, ModuleHandlerInterface $module_handler) {
+    parent::__construct('Plugin/CKEditorPlugin', $namespaces, $module_handler, 'Drupal\ckeditor\CKEditorPluginInterface', 'Drupal\ckeditor\Annotation\CKEditorPlugin');
+    $this->alterInfo('ckeditor_plugin_info');
+    $this->setCacheBackend($cache_backend, 'ckeditor_plugins');
+  }
+
+  /**
+   * Retrieves enabled plugins' files, keyed by plugin ID.
+   *
+   * For CKEditor plugins that implement:
+   *  - CKEditorPluginButtonsInterface, not CKEditorPluginContextualInterface,
+   *     a plugin is enabled if at least one of its buttons is in the toolbar;
+   *  - CKEditorPluginContextualInterface, not CKEditorPluginButtonsInterface,
+   *     a plugin is enabled if its isEnabled() method returns TRUE
+   *  - both of these interfaces, a plugin is enabled if either is the case.
+   *
+   * Internal plugins (those that are part of the bundled build of CKEditor) are
+   * excluded by default, since they are loaded implicitly. If you need to know
+   * even implicitly loaded (i.e. internal) plugins, then set the optional
+   * second parameter.
+   *
+   * @param \Drupal\editor\Entity\Editor $editor
+   *   A configured text editor object.
+   * @param bool $include_internal_plugins
+   *   Defaults to FALSE. When set to TRUE, plugins whose isInternal() method
+   *   returns TRUE will also be included.
+   * @return array
+   *   A list of the enabled CKEditor plugins, with the plugin IDs as keys and
+   *   the Drupal root-relative plugin files as values.
+   *   For internal plugins, the value is NULL.
+   */
+  public function getEnabledPluginFiles(Editor $editor, $include_internal_plugins = FALSE) {
+    $plugins = array_keys($this->getDefinitions());
+    $toolbar_buttons = $this->getEnabledButtons($editor);
+    $enabled_plugins = [];
+    $additional_plugins = [];
+
+    foreach ($plugins as $plugin_id) {
+      $plugin = $this->createInstance($plugin_id);
+
+      if (!$include_internal_plugins && $plugin->isInternal()) {
+        continue;
+      }
+
+      $enabled = FALSE;
+      // Enable this plugin if it provides a button that has been enabled.
+      if ($plugin instanceof CKEditorPluginButtonsInterface) {
+        $plugin_buttons = array_keys($plugin->getButtons());
+        $enabled = (count(array_intersect($toolbar_buttons, $plugin_buttons)) > 0);
+      }
+      // Otherwise enable this plugin if it declares itself as enabled.
+      if (!$enabled && $plugin instanceof CKEditorPluginContextualInterface) {
+        $enabled = $plugin->isEnabled($editor);
+      }
+
+      if ($enabled) {
+        $enabled_plugins[$plugin_id] = ($plugin->isInternal()) ? NULL : $plugin->getFile();
+        // Check if this plugin has dependencies that also need to be enabled.
+        $additional_plugins = array_merge($additional_plugins, array_diff($plugin->getDependencies($editor), $additional_plugins));
+      }
+    }
+
+    // Add the list of dependent plugins.
+    foreach ($additional_plugins as $plugin_id) {
+      $plugin = $this->createInstance($plugin_id);
+      $enabled_plugins[$plugin_id] = ($plugin->isInternal()) ? NULL : $plugin->getFile();
+    }
+
+    // Always return plugins in the same order.
+    asort($enabled_plugins);
+
+    return $enabled_plugins;
+  }
+
+  /**
+   * Gets the enabled toolbar buttons in the given text editor instance.
+   *
+   * @param \Drupal\editor\Entity\Editor $editor
+   *   A configured text editor object.
+   *
+   * @return string[]
+   *   A list of the toolbar buttons enabled in the given text editor instance.
+   */
+  public static function getEnabledButtons(Editor $editor) {
+    $toolbar_rows = [];
+    $settings = $editor->getSettings();
+    foreach ($settings['toolbar']['rows'] as $row_number => $row) {
+      $toolbar_rows[] = array_reduce($settings['toolbar']['rows'][$row_number], function (&$result, $button_group) {
+        return array_merge($result, $button_group['items']);
+      }, []);
+    }
+    return array_unique(NestedArray::mergeDeepArray($toolbar_rows));
+  }
+
+  /**
+   * Retrieves all available CKEditor buttons, keyed by plugin ID.
+   *
+   * @return array
+   *   All available CKEditor buttons, with plugin IDs as keys and button
+   *   metadata (as implemented by getButtons()) as values.
+   *
+   * @see \Drupal\ckeditor\CKEditorPluginButtonsInterface::getButtons()
+   */
+  public function getButtons() {
+    $plugins = array_keys($this->getDefinitions());
+    $buttons_plugins = [];
+
+    foreach ($plugins as $plugin_id) {
+      $plugin = $this->createInstance($plugin_id);
+      if ($plugin instanceof CKEditorPluginButtonsInterface) {
+        $buttons_plugins[$plugin_id] = $plugin->getButtons();
+      }
+    }
+
+    return $buttons_plugins;
+  }
+
+  /**
+   * Injects the CKEditor plugins settings forms as a vertical tabs subform.
+   *
+   * @param array &$form
+   *   A reference to an associative array containing the structure of the form.
+   * @param \Drupal\Core\Form\FormStateInterface $form_state
+   *   The current state of the form.
+   * @param \Drupal\editor\Entity\Editor $editor
+   *   A configured text editor object.
+   */
+  public function injectPluginSettingsForm(array &$form, FormStateInterface $form_state, Editor $editor) {
+    $definitions = $this->getDefinitions();
+
+    foreach (array_keys($definitions) as $plugin_id) {
+      $plugin = $this->createInstance($plugin_id);
+      if ($plugin instanceof CKEditorPluginConfigurableInterface) {
+        $plugin_settings_form = [];
+        $form['plugins'][$plugin_id] = [
+          '#type' => 'details',
+          '#title' => $definitions[$plugin_id]['label'],
+          '#open' => TRUE,
+          '#group' => 'editor][settings][plugin_settings',
+          '#attributes' => [
+            'data-ckeditor-plugin-id' => $plugin_id,
+          ],
+        ];
+        // Provide enough metadata for the drupal.ckeditor.admin library to
+        // allow it to automatically show/hide the vertical tab containing the
+        // settings for this plugin. Only do this if it's a CKEditor plugin that
+        // just provides buttons, don't do this if it's a contextually enabled
+        // CKEditor plugin. After all, in the latter case, we can't know when
+        // its settings should be shown!
+        if ($plugin instanceof CKEditorPluginButtonsInterface && !$plugin instanceof CKEditorPluginContextualInterface) {
+          $form['plugins'][$plugin_id]['#attributes']['data-ckeditor-buttons'] = implode(' ', array_keys($plugin->getButtons()));
+        }
+        $form['plugins'][$plugin_id] += $plugin->settingsForm($plugin_settings_form, $form_state, $editor);
+      }
+    }
+  }
+
+  /**
+   * Retrieves enabled plugins' iframe instance CSS files, keyed by plugin ID.
+   *
+   * @param \Drupal\editor\Entity\Editor $editor
+   *   A configured text editor object.
+   *
+   * @return string[]
+   *   Enabled plugins CKEditor CSS files, with plugin IDs as keys and CSS file
+   *   paths relative to the Drupal root (as implemented by getCssFiles()) as
+   *   values.
+   *
+   * @see \Drupal\ckeditor\CKEditorPluginCssInterface::getCssFiles()
+   */
+  public function getCssFiles(Editor $editor) {
+    $enabled_plugins = array_keys($this->getEnabledPluginFiles($editor, TRUE));
+    $css_files = [];
+
+    foreach ($enabled_plugins as $plugin_id) {
+      $plugin = $this->createInstance($plugin_id);
+      if ($plugin instanceof CKEditorPluginCssInterface) {
+        $css_files[$plugin_id] = $plugin->getCssFiles($editor);
+      }
+    }
+
+    return $css_files;
+  }
+
+}