/**
* {@inheritdoc}
*/
protected function formMultipleElements(FieldItemListInterface $items, array &$form, FormStateInterface $form_state)
{
$elements = parent::formMultipleElements($items, $form, $form_state);
// Alter #upload_validators passed to #file_upload_description.
$this->alterFileUploadHelpParameters($elements['#file_upload_description']);
// TODO: Why do we need this?
if ($this->isDefaultValueWidget($form_state) && !empty($elements[1])) {
unset($elements[1]);
$elements['#file_upload_delta'] = 0;
}
return $elements;
}
/**
* Form API callback: Processes a image_image field element.
*
* Expands the image_image type to include the alt and title fields.
*
* This method is assigned as a #process callback in formElement() method.
*/
public static function process($element, FormStateInterface $form_state, $form)
{
$item = $element['#value'];
$item['fids'] = $element['fids']['#value'];
$element['#theme'] = 'image_widget';
$element['#attached']['css'][] = drupal_get_path('module', 'image') . '/css/image.theme.css';
// Add the image preview.
if (!empty($element['#files']) && $element['#preview_image_style']) {
$file = reset($element['#files']);
$variables = array('style_name' => $element['#preview_image_style'], 'uri' => $file->getFileUri());
// Determine image dimensions.
if (isset($element['#value']['width']) && isset($element['#value']['height'])) {
$variables['width'] = $element['#value']['width'];
$variables['height'] = $element['#value']['height'];
} else {
$image = \Drupal::service('image.factory')->get($file->getFileUri());
if ($image->isValid()) {
$variables['width'] = $image->getWidth();
$variables['height'] = $image->getHeight();
} else {
$variables['width'] = $variables['height'] = NULL;
}
}
$element['preview'] = array('#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'] = array('#type' => 'hidden', '#value' => $variables['width']);
$element['height'] = array('#type' => 'hidden', '#value' => $variables['height']);
}
// Add the additional alt and title fields.
$element['alt'] = array('#title' => t('Alternate text'), '#type' => 'textfield', '#default_value' => isset($item['alt']) ? $item['alt'] : '', '#description' => t('This text will be used by screen readers, search engines, or when the image cannot be loaded.'), '#maxlength' => 512, '#weight' => -2, '#access' => (bool) $item['fids'] && $element['#alt_field'], '#element_validate' => $element['#alt_field_required'] == 1 ? array(array(get_called_class(), 'validateRequiredFields')) : array());
$element['title'] = array('#type' => 'textfield', '#title' => t('Title'), '#default_value' => isset($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' => -1, '#access' => (bool) $item['fids'] && $element['#title_field'], '#element_validate' => $element['#title_field_required'] == 1 ? array(array(get_called_class(), 'validateRequiredFields')) : array());
return parent::process($element, $form_state, $form);
}
/**
* {@inheritdoc}
*/
public function onDependencyRemoval(array $dependencies)
{
$changed = parent::onDependencyRemoval($dependencies);
$style_id = $this->getSetting('preview_image_style');
/** @var \Drupal\image\ImageStyleInterface $style */
if ($style_id && ($style = ImageStyle::load($style_id))) {
if (!empty($dependencies[$style->getConfigDependencyKey()][$style->getConfigDependencyName()])) {
/** @var \Drupal\image\ImageStyleStorageInterface $storage */
$storage = \Drupal::entityManager()->getStorage($style->getEntityTypeId());
$replacement_id = $storage->getReplacementId($style_id);
// If a valid replacement has been provided in the storage, replace the
// preview image style with the replacement.
if ($replacement_id && ImageStyle::load($replacement_id)) {
$this->setSetting('preview_image_style', $replacement_id);
} else {
$this->setSetting('preview_image_style', '');
}
// Signal that the formatter plugin settings were updated.
$changed = TRUE;
}
}
return $changed;
}
/**
* Form API callback: Processes a video_upload field element.
*
* This method is assigned as a #process callback in formElement() method.
*/
public static function process($element, FormStateInterface $form_state, $form)
{
return parent::process($element, $form_state, $form);
}
/**
* Form API callback: Processes a file_generic field element.
*
* Expands the file_generic type to include the description and display
* fields.
*
* This method is assigned as a #process callback in formElement() method.
*/
public static function process($element, FormStateInterface $form_state, $form)
{
$element = parent::process($element, $form_state, $form);
$item = $element['#value'];
$element['data']['#value'] = $item['data'];
$element['data']['#type'] = 'hidden';
return $element;
}
