wse-1.0.x-dev/modules/wse_preview/wse_preview.module

<?php

/**
 * @file
 * Primary module hooks for the Workspaces Preview module.
 */

use Drupal\Component\Serialization\Json;
use Drupal\Core\Access\AccessResult;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Routing\StackedRouteMatchInterface;
use Drupal\Core\Url;
use Drupal\workspaces\WorkspaceInterface;

/**
 * Implements hook_form_FORM_ID_alter() for 'wse_workspace_switcher_form'.
 */
function wse_preview_form_wse_workspace_switcher_form_alter(&$form, FormStateInterface $form_state, $form_id) {
  $active_workspace = \Drupal::service('workspaces.manager')->getActiveWorkspace();
  if (!$active_workspace) {
    return;
  }

  $url = Url::fromRoute('entity.workspace.preview_link_form', [
    'workspace' => $active_workspace->id(),
  ]);

  $route_match = \Drupal::routeMatch();
  if ($route_match instanceof StackedRouteMatchInterface) {
    $route_match = $route_match->getMasterRouteMatch();
  }
  $current_path_is_admin = \Drupal::service('router.admin_context')->isAdminRoute($route_match->getRouteObject());
  if (!$current_path_is_admin) {
    $query = $url->getOption('query');
    $query['redirect_url'] = Url::fromRoute('<current>')->toString();
    $url->setOption('query', $query);
  }

  $form['operations']['#links']['preview_link'] = [
    'title' => t('Preview link'),
    'url' => $url,
    'attributes' => [
      'class' => ['wse-action-link', 'wse-action-link--icon-show', 'use-ajax'],
      'title' => t('Preview link'),
      'data-dialog-type' => 'modal',
      'data-dialog-options' => Json::encode([
        'width' => 850,
      ]),
    ],
  ];
}

/**
 * Implements hook_ENTITY_TYPE_access() for the 'workspace' entity type.
 */
function wse_preview_workspace_access(WorkspaceInterface $workspace, $operation) {
  if ($operation === 'view') {
    $request = \Drupal::request();
    $negotiated_workspace_id = \Drupal::service('wse_preview.negotiator.cookie')->getActiveWorkspaceId($request);
    if ($negotiated_workspace_id == $workspace->id()) {
      return AccessResult::allowed()
        ->addCacheContexts(['cookies:wse_preview'])
        ->addCacheableDependency($workspace);
    }
  }
}