function file_view_file

Generate an array for rendering just the file portion of a file entity.

Parameters

object $file: A file object.

string|array $displays: Can be either:

• the name of a view mode;
• or custom display settings, as returned by file_display().

string $langcode: (optional) A language code to use for rendering. Defaults to the global content language of the current request.

Return value

array: An array as expected by backdrop_render().

File

core/modules/file/file.module, line 3291

Defines a "managed_file" Form API field and a "file" field for Field module.

Code

function file_view_file($file, $display = 'full', $langcode = NULL) {
  if (!isset($langcode)) {
    $langcode = $GLOBALS['language_content']->langcode;
  }

  // Prepare incoming display specifications.
  if (is_string($display)) {
    // Allow modules to change the view mode.
    $entity = array($file->fid => $file);
    $view_mode = key(entity_view_mode_prepare('file', $entity, $display, $langcode));
    $display = file_display($file->type, $view_mode);
  }
  else {
    $view_mode = '_custom_display';
  }

  $formatter = $display['formatter'];

  // Attempt to display the file with the specified display.
  // See file_display() for details.
  $element = NULL;
  // Load the file that contains file_info_formatter_types().
  module_load_include('inc', 'file', 'file.admin');

  $formatter_info = file_info_formatter_types($formatter);
  if (isset($formatter_info['view callback']) && ($function = $formatter_info['view callback']) && function_exists($function)) {

    if (!empty($formatter_info['default settings'])) {
      if (empty($display['settings'][$formatter])) {
        $display['settings'] = array();
      }
      $display['settings'][$formatter] += $formatter_info['default settings'];
    }
    $display_info = array(
      'type' => $formatter,
      'settings' => isset($display['settings'][$formatter]) ? $display['settings'][$formatter] : array(),
    );
    $element = $function($file, $display_info, $langcode);
  }

  // As a last resort, fall back to showing a link to the file.
  if (!isset($element)) {
    $element = array(
      '#theme' => 'file_link',
      '#file' => $file,
    );
  }

  // Add defaults and return the element.
  $element += array(
    '#file' => $file,
    '#view_mode' => $view_mode,
    '#language' => $langcode,
  );

  return $element;
}