FileMime.php

<?php

/**
 * @file
 * Definition of Drupal\file\Plugin\views\field\FileMime.
 */
namespace Drupal\file\Plugin\views\field;

use Drupal\Component\Annotation\PluginID;

/**
 * Field handler to add rendering MIME type images as an option on the filemime field.
 *
 * @ingroup views_field_handlers
 *
 * @PluginID("file_filemime")
 */
class FileMime extends File {
  protected function defineOptions() {
    $options = parent::defineOptions();
    $options['filemime_image'] = array(
      'default' => FALSE,
      'bool' => TRUE,
    );
    return $options;
  }
  public function buildOptionsForm(&$form, &$form_state) {
    $form['filemime_image'] = array(
      '#title' => t('Display an icon representing the file type, instead of the MIME text (such as "image/jpeg")'),
      '#type' => 'checkbox',
      '#default_value' => !empty($this->options['filemime_image']),
    );
    parent::buildOptionsForm($form, $form_state);
  }
  function render($values) {
    $data = $values->{$this->field_alias};
    if (!empty($this->options['filemime_image']) && $data !== NULL && $data !== '') {
      $fake_file = (object) array(
        'filemime' => $data,
      );
      $data = theme('file_icon', array(
        'file' => $fake_file,
      ));
    }
    return $this
      ->render_link($data, $values);
  }

}