public static function SvgImageFieldWidget::process in SVG Image Field 8

Same name and namespace in other branches

1. 2.1.x src/Plugin/Field/FieldWidget/SvgImageFieldWidget.php \Drupal\svg_image_field\Plugin\Field\FieldWidget\SvgImageFieldWidget::process()
2. 2.0.x src/Plugin/Field/FieldWidget/SvgImageFieldWidget.php \Drupal\svg_image_field\Plugin\Field\FieldWidget\SvgImageFieldWidget::process()

Form API callback: Processes a image_image field element.

Expands the image_image type to include the alt and title fields.

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

Overrides FileWidget::process

File

src/Plugin/Field/FieldWidget/SvgImageFieldWidget.php, line 180

Class

SvgImageFieldWidget

Plugin implementation of the 'image_image' widget.

Namespace

Drupal\svg_image_field\Plugin\Field\FieldWidget

Code

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

  // Add the image preview.
  if (!empty($element['#files']) && ($element['#preview_image_max_width'] || $element['#preview_image_max_height'])) {
    $file = reset($element['#files']);
    $attributes = [
      'style' => '',
    ];
    if (!empty($element['#preview_image_max_width'])) {
      $attributes['style'] = "max-width: {$element['#preview_image_max_width']}px;";
    }
    if (!empty($element['#preview_image_max_height'])) {
      $attributes['style'] .= "max-height: {$element['#preview_image_max_height']}px;";
    }
    if (!empty($item['alt'])) {
      $attributes['alt'] = $item['alt'];
      $attributes['title'] = $attributes['alt'];
    }
    $element['preview'] = [
      '#theme' => 'svg_image_field_formatter',
      '#inline' => FALSE,
      '#attributes' => $attributes,
      '#uri' => $file
        ->getFileUri(),
      '#svg_data' => NULL,
    ];
  }
  elseif (!empty($element['#default_image'])) {
    $default_image = $element['#default_image'];
    $file = File::load($default_image['fid']);
    if (!empty($file)) {
      $attributes = [
        'style' => '',
      ];
      if (!empty($element['#preview_image_max_width'])) {
        $attributes['style'] = "max-width={$element['#preview_image_max_width']}px;";
      }
      if (!empty($element['#preview_image_max_height'])) {
        $attributes['style'] .= "max-height={$element['#preview_image_max_height']}px;";
      }
      $element['preview'] = [
        '#weight' => -10,
        '#theme' => 'svg_image_field_formatter',
        '#inline' => FALSE,
        '#attributes' => $attributes,
        '#uri' => $file
          ->getFileUri(),
        '#svg_data' => NULL,
      ];
    }
  }

  // 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, $form_state, $form);
}