quickedit.module

<?php


/**
 * @file
 * Provides in-place content editing functionality for fields.
 *
 * The Quick Edit module makes content editable in-place. Rather than having to
 * visit a separate page to edit content, it may be edited in-place.
 *
 * Technically, this module adds classes and data- attributes to fields and
 * entities, enabling them for in-place editing.
 */
use Drupal\Core\Url;
use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Entity\Display\EntityViewDisplayInterface;
use Drupal\Core\Entity\RevisionableInterface;
use Drupal\Core\Routing\RouteMatchInterface;

/**
 * Implements hook_help().
 */
function quickedit_help($route_name, RouteMatchInterface $route_match) {
    switch ($route_name) {
        case 'help.page.quickedit':
            $output = '<h3>' . t('About') . '</h3>';
            $output .= '<p>' . t('The Quick Edit module allows users with the <a href=":quickedit_permission">Access in-place editing</a> and <a href=":contextual_permission">Use contextual links</a> permissions to edit field content without visiting a separate page. For more information, see the <a href=":handbook_url">online documentation for the Quick Edit module</a>.', [
                ':handbook_url' => 'https://www.drupal.org/documentation/modules/edit',
                ':quickedit_permission' => Url::fromRoute('user.admin_permissions', [], [
                    'fragment' => 'module-quickedit',
                ])->toString(),
                ':contextual_permission' => Url::fromRoute('user.admin_permissions', [], [
                    'fragment' => 'module-contextual',
                ])->toString(),
            ]) . '</p>';
            $output .= '<h3>' . t('Uses') . '</h3>';
            $output .= '<dl>';
            $output .= '<dt>' . t('Editing content in-place') . '</dt>';
            $output .= '<dd>';
            $output .= '<p>' . t('To edit content in place, you need to activate quick edit mode for a content item. Activate quick edit mode by choosing Quick edit from the contextual links for an area displaying the content (see the <a href=":contextual">Contextual Links module help</a> for more information about how to use contextual links).', [
                ':contextual' => Url::fromRoute('help.page', [
                    'name' => 'contextual',
                ])->toString(),
            ]) . '</p>';
            $output .= '<p>' . t('Once quick edit mode is activated, you will be able to edit the individual fields of your content. In the default theme, with a JavaScript-enabled browser and a mouse, the output of different fields in your content is outlined in blue, a pop-up gives the field name as you hover over the field output, and clicking on a field activates the editor. Closing the pop-up window ends quick edit mode.') . '</p>';
            $output .= '</dd>';
            $output .= '</dl>';
            return $output;
    }
}

/**
 * Implements hook_page_attachments().
 *
 * Adds the quickedit library to the page for any user who has the 'access
 * in-place editing' permission.
 */
function quickedit_page_attachments(array &$page) {
    if (!\Drupal::currentUser()->hasPermission('access in-place editing')) {
        return;
    }
    // In-place editing is only supported on the front-end.
    if (\Drupal::service('router.admin_context')->isAdminRoute()) {
        return;
    }
    $page['#attached']['drupalSettings']['quickedit']['csrf_token'] = \Drupal::csrfToken()->get('X-Drupal-Quickedit-CSRF-Token');
    $page['#attached']['library'][] = 'quickedit/quickedit';
}

/**
 * Implements hook_library_info_alter().
 *
 * Includes additional stylesheets defined by the admin theme to allow it to
 * customize the Quick Edit toolbar appearance.
 *
 * An admin theme can specify CSS files to make the front-end administration
 * experience of in-place editing match the administration experience in the
 * back-end.
 *
 * The CSS files can be specified via the "edit_stylesheets" property in the
 * .info.yml file:
 * @code
 * quickedit_stylesheets:
 *   - css/quickedit.css
 * @endcode
 */
function quickedit_library_info_alter(&$libraries, $extension) {
    if ($extension === 'quickedit' && isset($libraries['quickedit'])) {
        $theme = Drupal::config('system.theme')->get('admin');
        // First let the base theme modify the library, then the actual theme.
        $alter_library = function (&$library, $theme) use (&$alter_library) {
            if (!empty($theme) && ($theme_path = drupal_get_path('theme', $theme))) {
                $info = \Drupal::service('extension.list.theme')->getExtensionInfo($theme);
                // Recurse to process base theme(s) first.
                if (isset($info['base theme'])) {
                    $alter_library($library, $info['base theme']);
                }
                if (isset($info['quickedit_stylesheets'])) {
                    foreach ($info['quickedit_stylesheets'] as $path) {
                        $library['css']['theme']['/' . $theme_path . '/' . $path] = [];
                    }
                }
            }
        };
        $alter_library($libraries['quickedit'], $theme);
    }
}

/**
 * Implements hook_field_formatter_info_alter().
 *
 * Quick Edit extends the @FieldFormatter annotation with the following keys:
 * - quickedit: currently only contains one subkey 'editor' which indicates
 *   which in-place editor should be used. Possible values are 'form',
 *   'plain_text', 'disabled' or another in-place editor other than the ones
 *   Quick Edit module provides.
 */
function quickedit_field_formatter_info_alter(&$info) {
    foreach ($info as $key => $settings) {
        // Set in-place editor to 'form' if none is supplied.
        if (empty($settings['quickedit'])) {
            $info[$key]['quickedit'] = [
                'editor' => 'form',
            ];
        }
    }
}

/**
 * Implements hook_preprocess_HOOK() for the page title template.
 */
function quickedit_preprocess_page_title(&$variables) {
    $variables['#cache']['contexts'][] = 'user.permissions';
    if (\Drupal::currentUser()->hasPermission('access in-place editing')) {
        $variables['title_attributes']['class'][] = 'js-quickedit-page-title';
    }
}

/**
 * Implements hook_preprocess_HOOK() for field templates.
 */
function quickedit_preprocess_field(&$variables) {
    $variables['#cache']['contexts'][] = 'user.permissions';
    $element = $variables['element'];
    
    /** @var \Drupal\Core\Entity\ContentEntityInterface $entity */
    $entity = $element['#object'];
    if (!\Drupal::currentUser()->hasPermission('access in-place editing') || $entity instanceof RevisionableInterface && !$entity->isLatestRevision()) {
        return;
    }
    // Quick Edit module only supports view modes, not dynamically defined
    // "display options" (which \Drupal\Core\Field\FieldItemListInterface::view()
    // always names the "_custom" view mode).
    // @see \Drupal\Core\Field\FieldItemListInterface::view()
    // @see https://www.drupal.org/node/2120335
    if ($element['#view_mode'] === '_custom') {
        return;
    }
    // Fields that are computed fields are not editable.
    $definition = $entity->getFieldDefinition($element['#field_name']);
    if (!$definition->isComputed()) {
        $variables['attributes']['data-quickedit-field-id'] = $entity->getEntityTypeId() . '/' . $entity->id() . '/' . $element['#field_name'] . '/' . $element['#language'] . '/' . $element['#view_mode'];
    }
}

/**
 * Implements hook_entity_view_alter().
 */
function quickedit_entity_view_alter(&$build, EntityInterface $entity, EntityViewDisplayInterface $display) {
    if (isset($build['#embed'])) {
        return;
    }
    $build['#cache']['contexts'][] = 'user.permissions';
    if (!\Drupal::currentUser()->hasPermission('access in-place editing') || $entity instanceof RevisionableInterface && !$entity->isLatestRevision()) {
        return;
    }
    $build['#attributes']['data-quickedit-entity-id'] = $entity->getEntityTypeId() . '/' . $entity->id();
}

/**
 * Check if a loaded entity is the latest revision.
 *
 * @param \Drupal\Core\Entity\RevisionableInterface $entity
 *   The entity to check.
 *
 * @return bool
 *   TRUE if the loaded entity is the latest revision, FALSE otherwise.
 *
 * @deprecated in drupal:8.5.0 and is removed from drupal:9.0.0. Use
 *   \Drupal\Core\Entity\RevisionableInterface::isLatestRevision() instead.
 *   As internal API, _quickedit_entity_is_latest_revision() may also be removed
 *   in a minor release.
 *
 * @internal
 */
function _quickedit_entity_is_latest_revision(RevisionableInterface $entity) {
    @trigger_error('_quickedit_entity_is_latest_revision() is deprecated in Drupal 8.5.0 and will be removed before Drupal 9.0.0. Use \\Drupal\\Core\\Entity\\RevisionableInterface::isLatestRevision() instead. As internal API, _quickedit_entity_is_latest_revision() may also be removed in a minor release.', E_USER_DEPRECATED);
    return $entity->isLatestRevision();
}