ImageBrowserController.php in Image Entity Browser 8

Namespace

Drupal\image_browser\Controller

File

src/Controller/ImageBrowserController.php

<?php

namespace Drupal\image_browser\Controller;

use Drupal\Core\Controller\ControllerBase;
use Drupal\Component\Utility\Html;
use Drupal\Core\Ajax\AjaxResponse;
use Drupal\file\Entity\File;
use Drupal\Core\Ajax\HtmlCommand;
use Drupal\Core\Ajax\InvokeCommand;
class ImageBrowserController extends ControllerBase {
  public function page() {

    //We only accept ajax request for that page
    if (false == \Drupal::request()
      ->isXmlHttpRequest()) {
      throw new \Symfony\Component\HttpKernel\Exception\NotFoundHttpException();
    }
    $html_id = Html::getUniqueId('dexp-image-browser');
    return [
      [
        '#theme' => 'links',
        '#attributes' => [
          'class' => [
            'dexp-image-browser-tabs',
          ],
        ],
        '#links' => [
          'upload_link' => [
            'title' => $this
              ->t('Upload'),
            'url' => \Drupal\Core\Url::fromRoute('image_browser.upload'),
            'ajax' => [
              'wrapper' => $html_id,
              'method' => 'html',
            ],
          ],
          'library_browser' => [
            'title' => $this
              ->t('Library'),
            'url' => \Drupal\Core\Url::fromRoute('image_browser.library'),
            'ajax' => [
              'wrapper' => $html_id,
              'method' => 'html',
            ],
          ],
        ],
      ],
      [
        '#markup' => '<div id="' . $html_id . '"></div>',
      ],
    ];
  }

  /**
   * Reload widget to with new value assign in javascript
   */
  public function update() {
    $response = new AjaxResponse();
    $fid = 0;
    $file = \Drupal::request()
      ->get('file');
    $selector = \Drupal::request()
      ->get('selector');
    $fid = str_replace('file:', '', $file);
    if ($fid) {
      $file = File::load($fid);
      $file_url = file_create_url($file
        ->getFileUri());
      if ($file
        ->getMimeType() == 'image/svg+xml') {
        $preview = array(
          '#markup' => '<img src="' . $file_url . '"/>',
        );
      }
      else {
        $preview = array(
          '#theme' => 'image_style',
          '#style_name' => 'image_browser_thumbnail',
          '#uri' => $file
            ->getFileUri(),
        );
      }
      $response
        ->addCommand(new HtmlCommand($selector . ' .image-preview', $preview));
      $response
        ->addCommand(new InvokeCommand($selector . ' input[type=hidden]', 'val', array(
        'file:' . $fid,
      )));
      $response
        ->addCommand(new InvokeCommand($selector, 'addClass', array(
        'has-image',
      )));
      $response
        ->addCommand(new InvokeCommand($selector . ' input[type=hidden]', 'data', array(
        [
          'url' => $file_url,
        ],
      )));
      $response
        ->addCommand(new InvokeCommand($selector . ' input[type=hidden]', 'trigger', array(
        'update',
      )));
    }
    else {
      $response
        ->addCommand(new HtmlCommand($selector . ' .image-preview', ''));
      $response
        ->addCommand(new InvokeCommand($selector . ' input[type=hidden]', 'val', array(
        '',
      )));
      $response
        ->addCommand(new InvokeCommand($selector, 'removeClass', array(
        'has-image',
      )));
      $response
        ->addCommand(new InvokeCommand($selector . ' input[type=hidden]', 'trigger', array(
        'update',
      )));
    }
    return $response;
  }

}

Classes

Name	Description
ImageBrowserController