function managed_file_element_preview in Managed File 7

Add image preview to managed file.

@internal

Parameters

array $element: Form element to process.

Return value

array Processed element.

1 string reference to 'managed_file_element_preview'

managed_file_element_process in includes/managed_file.common.inc

Process widget of managed file.

File

includes/managed_file.common.inc, line 252

Auxiliary functionality.

Code

function managed_file_element_preview(array $element) {
  if (empty($element['#file'])) {
    hide($element['remove_button']);
  }
  else {
    $file = $element['#file'];
    hide($element['upload']);
    hide($element['upload_button']);
    if (!file_validate_is_image($file)) {
      $info = image_get_info($file->uri);
      $variables = [
        'alt' => $file->filename,
        'path' => $file->uri,
        'style_name' => 'thumbnail',
        'attributes' => [
          'class' => [
            'upload-preview',
          ],
        ],
      ];
      if (is_array($info)) {
        $variables += $info;
      }
      $element['preview'] = [
        '#type' => 'markup',
        '#weight' => -10,
        '#markup' => theme('image_style', $variables),
      ];
    }
  }
  return $element;
}