public static function SvgImageWidget::process in Svg Image 8

Same name and namespace in other branches

1. 2.x src/Plugin/Field/FieldWidget/SvgImageWidget.php \Drupal\svg_image\Plugin\Field\FieldWidget\SvgImageWidget::process()
2. 1.x src/Plugin/Field/FieldWidget/SvgImageWidget.php \Drupal\svg_image\Plugin\Field\FieldWidget\SvgImageWidget::process()

Form API callback: Processes a file_generic field element.

Expands the file_generic type to include the description and display fields.

This method is assigned as a #process callback in formElement() method.

Overrides FileWidget::process

File

src/Plugin/Field/FieldWidget/SvgImageWidget.php, line 226

Class

SvgImageWidget

Override plugin of the 'image_image' widget.

Namespace

Drupal\svg_image\Plugin\Field\FieldWidget

Code

public static function process($element, FormStateInterface $formState, $form) {
  $item = $element['#value'];
  $item['fids'] = $element['fids']['#value'];
  $element['#theme'] = 'image_widget';

  // Add the image preview.
  if (!empty($element['#files']) && $element['#preview_image_style']) {
    $file = reset($element['#files']);
    $variables = svg_image_get_image_file_dimensions($file);
    $variables['style_name'] = $element['#preview_image_style'];
    $variables['uri'] = $file
      ->getFileUri();

    // Add a custom preview for SVG file.
    if (svg_image_is_file_svg($file)) {
      $element['preview'] = [
        '#weight' => -10,
        '#theme' => 'image',
        '#width' => $variables['width'],
        '#height' => $variables['height'],
        '#uri' => $variables['uri'],
      ];
    }
    else {
      $element['preview'] = [
        '#weight' => -10,
        '#theme' => 'image_style',
        '#width' => $variables['width'],
        '#height' => $variables['height'],
        '#style_name' => $variables['style_name'],
        '#uri' => $variables['uri'],
      ];
    }

    // Store the dimensions in the form so the file doesn't have to be
    // accessed again. This is important for remote files.
    $element['width'] = [
      '#type' => 'hidden',
      '#value' => $variables['width'],
    ];
    $element['height'] = [
      '#type' => 'hidden',
      '#value' => $variables['height'],
    ];
  }
  elseif (!empty($element['#default_image'])) {
    $defaultImage = $element['#default_image'];
    $file = File::load($defaultImage['fid']);
    if (!empty($file)) {
      $element['preview'] = [
        '#weight' => -10,
        '#theme' => 'image_style',
        '#width' => $defaultImage['width'],
        '#height' => $defaultImage['height'],
        '#style_name' => $element['#preview_image_style'],
        '#uri' => $file
          ->getFileUri(),
      ];
    }
  }

  // Add the additional alt and title fields.
  $element['alt'] = [
    '#title' => t('Alternative text'),
    '#type' => 'textfield',
    '#default_value' => isset($item['alt']) ? $item['alt'] : '',
    '#description' => t('This text will be used by screen readers, search engines, or when the image cannot be loaded.'),
    // @see https://www.drupal.org/node/465106#alt-text
    '#maxlength' => 512,
    '#weight' => -12,
    '#access' => (bool) $item['fids'] && $element['#alt_field'],
    '#required' => $element['#alt_field_required'],
    '#element_validate' => $element['#alt_field_required'] == 1 ? [
      [
        get_called_class(),
        'validateRequiredFields',
      ],
    ] : [],
  ];
  $element['title'] = [
    '#type' => 'textfield',
    '#title' => t('Title'),
    '#default_value' => isset($item['title']) ? $item['title'] : '',
    '#description' => t('The title is used as a tool tip when the user hovers the mouse over the image.'),
    '#maxlength' => 1024,
    '#weight' => -11,
    '#access' => (bool) $item['fids'] && $element['#title_field'],
    '#required' => $element['#title_field_required'],
    '#element_validate' => $element['#title_field_required'] == 1 ? [
      [
        get_called_class(),
        'validateRequiredFields',
      ],
    ] : [],
  ];
  return parent::process($element, $formState, $form);
}