AudioPlayerHTML5.php in Media entity audio 8        
                          
                  
                        
  
  
  
  
File
  src/Plugin/Field/FieldFormatter/AudioPlayerHTML5.php
  
    View source  
  <?php
namespace Drupal\media_entity_audio\Plugin\Field\FieldFormatter;
use Drupal\Core\Field\FieldItemListInterface;
use Drupal\Core\Form\FormStateInterface;
class AudioPlayerHTML5 extends AudioPlayerBase {
  
  public static function defaultSettings() {
    $settings['provide_download_link'] = TRUE;
    $settings['audio_attributes'] = 'controls';
    return $settings;
  }
  
  public function settingsForm(array $form, FormStateInterface $form_state) {
    $form = parent::settingsForm($form, $form_state);
    $form['provide_download_link'] = [
      '#title' => $this
        ->t('Provide Download Link'),
      '#type' => 'checkbox',
      '#default_value' => $this
        ->getSetting('provide_download_link'),
    ];
    $form['audio_attributes'] = [
      '#title' => $this
        ->t('Audio Tag Attributes'),
      '#type' => 'textfield',
      '#description' => $this
        ->t('Give a space-separeted list of values like: <em>\'controls preload="auto" loop\'</em>. Note that if you remove the <em>\'controls\'</em> tag, your player will not show up.'),
      '#default_value' => $this
        ->getSetting('audio_attributes'),
    ];
    return $form;
  }
  
  public function settingsSummary() {
    $summary = [];
    $provide_download_link = $this
      ->getSetting('provide_download_link');
    $audio_attributes = $this
      ->getSetting('audio_attributes');
    if ($provide_download_link) {
      $summary[] = $this
        ->t('Download link provided.');
    }
    if ($audio_attributes) {
      $summary[] = $this
        ->t('Audio tag attributes: @tags.', [
        '@tags' => $audio_attributes,
      ]);
    }
    return $summary;
  }
  
  public function viewElements(FieldItemListInterface $items, $langcode) {
    $elements = array();
    $provide_download_link = $this
      ->getSetting('provide_download_link');
    $audio_attributes = $this
      ->getSetting('audio_attributes');
    foreach ($this
      ->getEntitiesToView($items, $langcode) as $delta => $file) {
      $item = $file->_referringItem;
      $elements[$delta] = array(
        '#theme' => 'media_audio_file_formatter',
        '#file' => $file,
        '#description' => $item->description,
        '#value' => $provide_download_link,
        '#extravalue' => $audio_attributes,
        '#cache' => array(
          'tags' => $file
            ->getCacheTags(),
        ),
      );
      
      if (isset($item->_attributes)) {
        $elements[$delta] += array(
          '#attributes' => array(),
        );
        $elements[$delta]['#attributes'] += $item->_attributes;
        
        unset($item->_attributes);
      }
    }
    return $elements;
  }
}