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| <?php | |
| /** | |
| * @file | |
| * Contains \Drupal\ckeditor\Plugin\CKEditorPlugin\Internal. | |
| */ | |
| namespace Drupal\ckeditor\Plugin\CKEditorPlugin; | |
| use Drupal\ckeditor\CKEditorPluginBase; | |
| use Drupal\Component\Utility\NestedArray; | |
| use Drupal\Core\Cache\Cache; | |
| use Drupal\Core\Cache\CacheBackendInterface; | |
| use Drupal\Core\Plugin\ContainerFactoryPluginInterface; | |
| use Drupal\editor\Entity\Editor; | |
| use Drupal\filter\Plugin\FilterInterface; | |
| use Symfony\Component\DependencyInjection\ContainerInterface; | |
| /** | |
| * Defines the "internal" plugin (i.e. core plugins part of our CKEditor build). | |
| * | |
| * @CKEditorPlugin( | |
| * id = "internal", | |
| * label = @Translation("CKEditor core") | |
| * ) | |
| */ | |
| class Internal extends CKEditorPluginBase implements ContainerFactoryPluginInterface { | |
| /** | |
| * The cache backend. | |
| * | |
| * @var \Drupal\Core\Cache\CacheBackendInterface | |
| */ | |
| protected $cache; | |
| /** | |
| * Constructs a \Drupal\ckeditor\Plugin\CKEditorPlugin\Internal object. | |
| * | |
| * @param array $configuration | |
| * A configuration array containing information about the plugin instance. | |
| * @param string $plugin_id | |
| * The plugin_id for the plugin instance. | |
| * @param mixed $plugin_definition | |
| * The plugin implementation definition. | |
| * @param \Drupal\Core\Cache\CacheBackendInterface $cache_backend | |
| * The cache backend. | |
| */ | |
| public function __construct(array $configuration, $plugin_id, $plugin_definition, CacheBackendInterface $cache_backend) { | |
| $this->cache = $cache_backend; | |
| parent::__construct($configuration, $plugin_id, $plugin_definition); | |
| } | |
| /** | |
| * Creates an instance of the plugin. | |
| * | |
| * @param \Symfony\Component\DependencyInjection\ContainerInterface $container | |
| * The container to pull out services used in the plugin. | |
| * @param array $configuration | |
| * A configuration array containing information about the plugin instance. | |
| * @param string $plugin_id | |
| * The plugin ID for the plugin instance. | |
| * @param mixed $plugin_definition | |
| * The plugin implementation definition. | |
| * | |
| * @return static | |
| * Returns an instance of this plugin. | |
| */ | |
| public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) { | |
| return new static( | |
| $configuration, | |
| $plugin_id, | |
| $plugin_definition, | |
| $container->get('cache.default') | |
| ); | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function isInternal() { | |
| return TRUE; | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function getFile() { | |
| // This plugin is already part of Drupal core's CKEditor build. | |
| return FALSE; | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function getConfig(Editor $editor) { | |
| // Reasonable defaults that provide expected basic behavior. | |
| $config = array( | |
| 'customConfig' => '', // Don't load CKEditor's config.js file. | |
| 'pasteFromWordPromptCleanup' => TRUE, | |
| 'resize_dir' => 'vertical', | |
| 'justifyClasses' => array('text-align-left', 'text-align-center', 'text-align-right', 'text-align-justify'), | |
| 'entities' => FALSE, | |
| ); | |
| // Add the allowedContent setting, which ensures CKEditor only allows tags | |
| // and attributes that are allowed by the text format for this text editor. | |
| list($config['allowedContent'], $config['disallowedContent']) = $this->generateACFSettings($editor); | |
| // Add the format_tags setting, if its button is enabled. | |
| $toolbar_rows = array(); | |
| $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']); | |
| }, array()); | |
| } | |
| $toolbar_buttons = array_unique(NestedArray::mergeDeepArray($toolbar_rows)); | |
| if (in_array('Format', $toolbar_buttons)) { | |
| $config['format_tags'] = $this->generateFormatTagsSetting($editor); | |
| } | |
| return $config; | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function getButtons() { | |
| $button = function($name, $direction = 'ltr') { | |
| // In the markup below, we mostly use the name (which may include spaces), | |
| // but in one spot we use it as a CSS class, so strip spaces. | |
| // Note: this uses str_replace() instead of Html::cleanCssIdentifier() | |
| // because we must provide these class names exactly how CKEditor expects | |
| // them in its library, which cleanCssIdentifier() does not do. | |
| $class_name = str_replace(' ', '', $name); | |
| return [ | |
| '#type' => 'inline_template', | |
| '#template' => '<a href="#" class="cke-icon-only cke_{{ direction }}" role="button" title="{{ name }}" aria-label="{{ name }}"><span class="cke_button_icon cke_button__{{ classname }}_icon">{{ name }}</span></a>', | |
| '#context' => [ | |
| 'direction' => $direction, | |
| 'name' => $name, | |
| 'classname' => $class_name, | |
| ], | |
| ]; | |
| }; | |
| return array( | |
| // "basicstyles" plugin. | |
| 'Bold' => array( | |
| 'label' => t('Bold'), | |
| 'image_alternative' => $button('bold'), | |
| 'image_alternative_rtl' => $button('bold', 'rtl'), | |
| ), | |
| 'Italic' => array( | |
| 'label' => t('Italic'), | |
| 'image_alternative' => $button('italic'), | |
| 'image_alternative_rtl' => $button('italic', 'rtl'), | |
| ), | |
| 'Underline' => array( | |
| 'label' => t('Underline'), | |
| 'image_alternative' => $button('underline'), | |
| 'image_alternative_rtl' => $button('underline', 'rtl'), | |
| ), | |
| 'Strike' => array( | |
| 'label' => t('Strike-through'), | |
| 'image_alternative' => $button('strike'), | |
| 'image_alternative_rtl' => $button('strike', 'rtl'), | |
| ), | |
| 'Superscript' => array( | |
| 'label' => t('Superscript'), | |
| 'image_alternative' => $button('super script'), | |
| 'image_alternative_rtl' => $button('super script', 'rtl'), | |
| ), | |
| 'Subscript' => array( | |
| 'label' => t('Subscript'), | |
| 'image_alternative' => $button('sub script'), | |
| 'image_alternative_rtl' => $button('sub script', 'rtl'), | |
| ), | |
| // "removeformat" plugin. | |
| 'RemoveFormat' => array( | |
| 'label' => t('Remove format'), | |
| 'image_alternative' => $button('remove format'), | |
| 'image_alternative_rtl' => $button('remove format', 'rtl'), | |
| ), | |
| // "justify" plugin. | |
| 'JustifyLeft' => array( | |
| 'label' => t('Align left'), | |
| 'image_alternative' => $button('justify left'), | |
| 'image_alternative_rtl' => $button('justify left', 'rtl'), | |
| ), | |
| 'JustifyCenter' => array( | |
| 'label' => t('Align center'), | |
| 'image_alternative' => $button('justify center'), | |
| 'image_alternative_rtl' => $button('justify center', 'rtl'), | |
| ), | |
| 'JustifyRight' => array( | |
| 'label' => t('Align right'), | |
| 'image_alternative' => $button('justify right'), | |
| 'image_alternative_rtl' => $button('justify right', 'rtl'), | |
| ), | |
| 'JustifyBlock' => array( | |
| 'label' => t('Justify'), | |
| 'image_alternative' => $button('justify block'), | |
| 'image_alternative_rtl' => $button('justify block', 'rtl'), | |
| ), | |
| // "list" plugin. | |
| 'BulletedList' => array( | |
| 'label' => t('Bullet list'), | |
| 'image_alternative' => $button('bulleted list'), | |
| 'image_alternative_rtl' => $button('bulleted list', 'rtl'), | |
| ), | |
| 'NumberedList' => array( | |
| 'label' => t('Numbered list'), | |
| 'image_alternative' => $button('numbered list'), | |
| 'image_alternative_rtl' => $button('numbered list', 'rtl'), | |
| ), | |
| // "indent" plugin. | |
| 'Outdent' => array( | |
| 'label' => t('Outdent'), | |
| 'image_alternative' => $button('outdent'), | |
| 'image_alternative_rtl' => $button('outdent', 'rtl'), | |
| ), | |
| 'Indent' => array( | |
| 'label' => t('Indent'), | |
| 'image_alternative' => $button('indent'), | |
| 'image_alternative_rtl' => $button('indent', 'rtl'), | |
| ), | |
| // "undo" plugin. | |
| 'Undo' => array( | |
| 'label' => t('Undo'), | |
| 'image_alternative' => $button('undo'), | |
| 'image_alternative_rtl' => $button('undo', 'rtl'), | |
| ), | |
| 'Redo' => array( | |
| 'label' => t('Redo'), | |
| 'image_alternative' => $button('redo'), | |
| 'image_alternative_rtl' => $button('redo', 'rtl'), | |
| ), | |
| // "blockquote" plugin. | |
| 'Blockquote' => array( | |
| 'label' => t('Blockquote'), | |
| 'image_alternative' => $button('blockquote'), | |
| 'image_alternative_rtl' => $button('blockquote', 'rtl'), | |
| ), | |
| // "horizontalrule" plugin | |
| 'HorizontalRule' => array( | |
| 'label' => t('Horizontal rule'), | |
| 'image_alternative' => $button('horizontal rule'), | |
| 'image_alternative_rtl' => $button('horizontal rule', 'rtl'), | |
| ), | |
| // "clipboard" plugin. | |
| 'Cut' => array( | |
| 'label' => t('Cut'), | |
| 'image_alternative' => $button('cut'), | |
| 'image_alternative_rtl' => $button('cut', 'rtl'), | |
| ), | |
| 'Copy' => array( | |
| 'label' => t('Copy'), | |
| 'image_alternative' => $button('copy'), | |
| 'image_alternative_rtl' => $button('copy', 'rtl'), | |
| ), | |
| 'Paste' => array( | |
| 'label' => t('Paste'), | |
| 'image_alternative' => $button('paste'), | |
| 'image_alternative_rtl' => $button('paste', 'rtl'), | |
| ), | |
| // "pastetext" plugin. | |
| 'PasteText' => array( | |
| 'label' => t('Paste Text'), | |
| 'image_alternative' => $button('paste text'), | |
| 'image_alternative_rtl' => $button('paste text', 'rtl'), | |
| ), | |
| // "pastefromword" plugin. | |
| 'PasteFromWord' => array( | |
| 'label' => t('Paste from Word'), | |
| 'image_alternative' => $button('paste from word'), | |
| 'image_alternative_rtl' => $button('paste from word', 'rtl'), | |
| ), | |
| // "specialchar" plugin. | |
| 'SpecialChar' => array( | |
| 'label' => t('Character map'), | |
| 'image_alternative' => $button('special char'), | |
| 'image_alternative_rtl' => $button('special char', 'rtl'), | |
| ), | |
| 'Format' => array( | |
| 'label' => t('HTML block format'), | |
| 'image_alternative' => [ | |
| '#type' => 'inline_template', | |
| '#template' => '<a href="#" role="button" aria-label="{{ format_text }}"><span class="ckeditor-button-dropdown">{{ format_text }}<span class="ckeditor-button-arrow"></span></span></a>', | |
| '#context' => [ | |
| 'format_text' => t('Format'), | |
| ], | |
| ], | |
| ), | |
| // "table" plugin. | |
| 'Table' => array( | |
| 'label' => t('Table'), | |
| 'image_alternative' => $button('table'), | |
| 'image_alternative_rtl' => $button('table', 'rtl'), | |
| ), | |
| // "showblocks" plugin. | |
| 'ShowBlocks' => array( | |
| 'label' => t('Show blocks'), | |
| 'image_alternative' => $button('show blocks'), | |
| 'image_alternative_rtl' => $button('show blocks', 'rtl'), | |
| ), | |
| // "sourcearea" plugin. | |
| 'Source' => array( | |
| 'label' => t('Source code'), | |
| 'image_alternative' => $button('source'), | |
| 'image_alternative_rtl' => $button('source', 'rtl'), | |
| ), | |
| // "maximize" plugin. | |
| 'Maximize' => array( | |
| 'label' => t('Maximize'), | |
| 'image_alternative' => $button('maximize'), | |
| 'image_alternative_rtl' => $button('maximize', 'rtl'), | |
| ), | |
| // No plugin, separator "button" for toolbar builder UI use only. | |
| '-' => array( | |
| 'label' => t('Separator'), | |
| 'image_alternative' => [ | |
| '#type' => 'inline_template', | |
| '#template' => '<a href="#" role="button" aria-label="{{ button_separator_text }}" class="ckeditor-separator"></a>', | |
| '#context' => [ | |
| 'button_separator_text' => t('Button separator'), | |
| ], | |
| ], | |
| 'attributes' => array( | |
| 'class' => array('ckeditor-button-separator'), | |
| 'data-drupal-ckeditor-type' => 'separator', | |
| ), | |
| 'multiple' => TRUE, | |
| ), | |
| ); | |
| } | |
| /** | |
| * Builds the "format_tags" configuration part of the CKEditor JS settings. | |
| * | |
| * @see getConfig() | |
| * | |
| * @param \Drupal\editor\Entity\Editor $editor | |
| * A configured text editor object. | |
| * | |
| * @return array | |
| * An array containing the "format_tags" configuration. | |
| */ | |
| protected function generateFormatTagsSetting(Editor $editor) { | |
| // When no text format is associated yet, assume no tag is allowed. | |
| // @see \Drupal\Editor\EditorInterface::hasAssociatedFilterFormat() | |
| if (!$editor->hasAssociatedFilterFormat()) { | |
| return array(); | |
| } | |
| $format = $editor->getFilterFormat(); | |
| $cid = 'ckeditor_internal_format_tags:' . $format->id(); | |
| if ($cached = $this->cache->get($cid)) { | |
| $format_tags = $cached->data; | |
| } | |
| else { | |
| // The <p> tag is always allowed — HTML without <p> tags is nonsensical. | |
| $format_tags = ['p']; | |
| // Given the list of possible format tags, automatically determine whether | |
| // the current text format allows this tag, and thus whether it should show | |
| // up in the "Format" dropdown. | |
| $possible_format_tags = ['h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'pre']; | |
| foreach ($possible_format_tags as $tag) { | |
| $input = '<' . $tag . '>TEST</' . $tag . '>'; | |
| $output = trim(check_markup($input, $editor->id())); | |
| if ($input == $output) { | |
| $format_tags[] = $tag; | |
| } | |
| } | |
| $format_tags = implode(';', $format_tags); | |
| // Cache the "format_tags" configuration. This cache item is infinitely | |
| // valid; it only changes whenever the text format is changed, hence it's | |
| // tagged with the text format's cache tag. | |
| $this->cache->set($cid, $format_tags, Cache::PERMANENT, $format->getCacheTags()); | |
| } | |
| return $format_tags; | |
| } | |
| /** | |
| * Builds the ACF part of the CKEditor JS settings. | |
| * | |
| * This ensures that CKEditor obeys the HTML restrictions defined by Drupal's | |
| * filter system, by enabling CKEditor's Advanced Content Filter (ACF) | |
| * functionality: http://ckeditor.com/blog/CKEditor-4.1-RC-Released. | |
| * | |
| * @see getConfig() | |
| * | |
| * @param \Drupal\editor\Entity\Editor $editor | |
| * A configured text editor object. | |
| * | |
| * @return array | |
| * An array with two values: | |
| * - the first value is the "allowedContent" setting: a well-formatted array | |
| * or TRUE. The latter indicates that anything is allowed. | |
| * - the second value is the "disallowedContent" setting: a well-formatted | |
| * array or FALSE. The latter indicates that nothing is disallowed. | |
| */ | |
| protected function generateACFSettings(Editor $editor) { | |
| // When no text format is associated yet, assume nothing is disallowed, so | |
| // set allowedContent to true. | |
| if (!$editor->hasAssociatedFilterFormat()) { | |
| return TRUE; | |
| } | |
| $format = $editor->getFilterFormat(); | |
| $filter_types = $format->getFilterTypes(); | |
| // When nothing is disallowed, set allowedContent to true. | |
| if (!in_array(FilterInterface::TYPE_HTML_RESTRICTOR, $filter_types)) { | |
| return array(TRUE, FALSE); | |
| } | |
| // Generate setting that accurately reflects allowed tags and attributes. | |
| else { | |
| $get_attribute_values = function($attribute_values, $allowed_values) { | |
| $values = array_keys(array_filter($attribute_values, function($value) use ($allowed_values) { | |
| if ($allowed_values) { | |
| return $value !== FALSE; | |
| } | |
| else { | |
| return $value === FALSE; | |
| } | |
| })); | |
| if (count($values)) { | |
| return implode(',', $values); | |
| } | |
| else { | |
| return NULL; | |
| } | |
| }; | |
| $html_restrictions = $format->getHtmlRestrictions(); | |
| // When all HTML is allowed, also set allowedContent to true and | |
| // disallowedContent to false. | |
| if ($html_restrictions === FALSE) { | |
| return array(TRUE, FALSE); | |
| } | |
| $allowed = array(); | |
| $disallowed = array(); | |
| if (isset($html_restrictions['forbidden_tags'])) { | |
| foreach ($html_restrictions['forbidden_tags'] as $tag) { | |
| $disallowed[$tag] = TRUE; | |
| } | |
| } | |
| foreach ($html_restrictions['allowed'] as $tag => $attributes) { | |
| // Tell CKEditor the tag is allowed, but no attributes. | |
| if ($attributes === FALSE) { | |
| $allowed[$tag] = array( | |
| 'attributes' => FALSE, | |
| 'styles' => FALSE, | |
| 'classes' => FALSE, | |
| ); | |
| } | |
| // Tell CKEditor the tag is allowed, as well as any attribute on it. The | |
| // "style" and "class" attributes are handled separately by CKEditor: | |
| // they are disallowed even if you specify it in the list of allowed | |
| // attributes, unless you state specific values for them that are | |
| // allowed. Or, in this case: any value for them is allowed. | |
| elseif ($attributes === TRUE) { | |
| $allowed[$tag] = array( | |
| 'attributes' => TRUE, | |
| 'styles' => TRUE, | |
| 'classes' => TRUE, | |
| ); | |
| // We've just marked that any value for the "style" and "class" | |
| // attributes is allowed. However, that may not be the case: the "*" | |
| // tag may still apply restrictions. | |
| // Since CKEditor's ACF follows the following principle: | |
| // Once validated, an element or its property cannot be | |
| // invalidated by another rule. | |
| // That means that the most permissive setting wins. Which means that | |
| // it will still be allowed by CKEditor, for instance, to define any | |
| // style, no matter what the "*" tag's restrictions may be. If there | |
| // is a setting for either the "style" or "class" attribute, it cannot | |
| // possibly be more permissive than what was set above. Hence, inherit | |
| // from the "*" tag where possible. | |
| if (isset($html_restrictions['allowed']['*'])) { | |
| $wildcard = $html_restrictions['allowed']['*']; | |
| if (isset($wildcard['style'])) { | |
| if (!is_array($wildcard['style'])) { | |
| $allowed[$tag]['styles'] = $wildcard['style']; | |
| } | |
| else { | |
| $allowed_styles = $get_attribute_values($wildcard['style'], TRUE); | |
| if (isset($allowed_styles)) { | |
| $allowed[$tag]['styles'] = $allowed_styles; | |
| } | |
| else { | |
| unset($allowed[$tag]['styles']); | |
| } | |
| } | |
| } | |
| if (isset($wildcard['class'])) { | |
| if (!is_array($wildcard['class'])) { | |
| $allowed[$tag]['classes'] = $wildcard['class']; | |
| } | |
| else { | |
| $allowed_classes = $get_attribute_values($wildcard['class'], TRUE); | |
| if (isset($allowed_classes)) { | |
| $allowed[$tag]['classes'] = $allowed_classes; | |
| } | |
| else { | |
| unset($allowed[$tag]['classes']); | |
| } | |
| } | |
| } | |
| } | |
| } | |
| // Tell CKEditor the tag is allowed, along with some tags. | |
| elseif (is_array($attributes)) { | |
| // Set defaults (these will be overridden below if more specific | |
| // values are present). | |
| $allowed[$tag] = array( | |
| 'attributes' => FALSE, | |
| 'styles' => FALSE, | |
| 'classes' => FALSE, | |
| ); | |
| // Configure allowed attributes, allowed "style" attribute values and | |
| // allowed "class" attribute values. | |
| // CKEditor only allows specific values for the "class" and "style" | |
| // attributes; so ignore restrictions on other attributes, which | |
| // Drupal filters may provide. | |
| // NOTE: A Drupal contrib module can subclass this class, override the | |
| // getConfig() method, and override the JavaScript at | |
| // Drupal.editors.ckeditor to somehow make validation of values for | |
| // attributes other than "class" and "style" work. | |
| $allowed_attributes = array_filter($attributes, function($value) { | |
| return $value !== FALSE; | |
| }); | |
| if (count($allowed_attributes)) { | |
| $allowed[$tag]['attributes'] = implode(',', array_keys($allowed_attributes)); | |
| } | |
| if (isset($allowed_attributes['style'])) { | |
| if (is_bool($allowed_attributes['style'])) { | |
| $allowed[$tag]['styles'] = $allowed_attributes['style']; | |
| } | |
| elseif (is_array($allowed_attributes['style'])) { | |
| $allowed_classes = $get_attribute_values($allowed_attributes['style'], TRUE); | |
| if (isset($allowed_classes)) { | |
| $allowed[$tag]['styles'] = $allowed_classes; | |
| } | |
| } | |
| } | |
| if (isset($allowed_attributes['class'])) { | |
| if (is_bool($allowed_attributes['class'])) { | |
| $allowed[$tag]['classes'] = $allowed_attributes['class']; | |
| } | |
| elseif (is_array($allowed_attributes['class'])) { | |
| $allowed_classes = $get_attribute_values($allowed_attributes['class'], TRUE); | |
| if (isset($allowed_classes)) { | |
| $allowed[$tag]['classes'] = $allowed_classes; | |
| } | |
| } | |
| } | |
| // Handle disallowed attributes analogously. However, to handle *dis- | |
| // allowed* attribute values, we must look at *allowed* attributes' | |
| // disallowed attribute values! After all, a disallowed attribute | |
| // implies that all of its possible attribute values are disallowed, | |
| // thus we must look at the disallowed attribute values on allowed | |
| // attributes. | |
| $disallowed_attributes = array_filter($attributes, function($value) { | |
| return $value === FALSE; | |
| }); | |
| if (count($disallowed_attributes)) { | |
| // No need to blacklist the 'class' or 'style' attributes; CKEditor | |
| // handles them separately (if no specific class or style attribute | |
| // values are allowed, then those attributes are disallowed). | |
| if (isset($disallowed_attributes['class'])) { | |
| unset($disallowed_attributes['class']); | |
| } | |
| if (isset($disallowed_attributes['style'])) { | |
| unset($disallowed_attributes['style']); | |
| } | |
| $disallowed[$tag]['attributes'] = implode(',', array_keys($disallowed_attributes)); | |
| } | |
| if (isset($allowed_attributes['style']) && is_array($allowed_attributes['style'])) { | |
| $disallowed_styles = $get_attribute_values($allowed_attributes['style'], FALSE); | |
| if (isset($disallowed_styles)) { | |
| $disallowed[$tag]['styles'] = $disallowed_styles; | |
| } | |
| } | |
| if (isset($allowed_attributes['class']) && is_array($allowed_attributes['class'])) { | |
| $disallowed_classes = $get_attribute_values($allowed_attributes['class'], FALSE); | |
| if (isset($disallowed_classes)) { | |
| $disallowed[$tag]['classes'] = $disallowed_classes; | |
| } | |
| } | |
| } | |
| } | |
| ksort($allowed); | |
| ksort($disallowed); | |
| return array($allowed, $disallowed); | |
| } | |
| } | |
| } |