/**
* {@inheritdoc}
*/
public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state)
{
$element = parent::formElement($items, $delta, $element, $form, $form_state);
$element['target_id']['#tags'] = TRUE;
$element['target_id']['#default_value'] = $items->referencedEntities();
return $element;
}
/**
* {@inheritdoc}
*/
public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state)
{
$referenced_entities = $items->referencedEntities();
$element = parent::formElement($items, $delta, $element, $form, $form_state);
// If this is an existing (not new item).
if ($delta < count($referenced_entities)) {
// Mark element as being existing, not new item.
// Top level of the returned element must be called 'target_id',
// so we cannot create a container.
// Autocomplete element does some fancy processing to handle empty strings,
// so we must use an autocomplete element not a hidden or textfield element.
// But #states[#visible] does not seem to have an option to always hide.,
// and autocomplete elements don't seem to accept #attributes, so we must
// use #prefix and #suffix to add a class so that we can hide it.
$element['#prefix'] = '<div class="er-enhanced-existing">';
$element['#suffix'] = '</div>';
if ($this->getSetting('preview')) {
// Add preview.
$element['#prefix'] = '<div class="er-enhanced-existing er-enhanced-previewing">';
$element['#attached']['library'][] = 'ahs_er_enhanced/preview';
$entityTypeName = $referenced_entities[$delta]->getEntityType()->id();
$view_builder = \Drupal::entityTypeManager()->getViewBuilder($entityTypeName);
$preview = $view_builder->view($referenced_entities[$delta], $this->getSetting('preview_view_mode'));
$element['preview_container'] = ['#type' => 'container', '#attributes' => ['class' => ['er-enhanced-preview']], 'preview' => $preview];
// Add a remove link to the preview.
$element['remove'] = ['#markup' => '<a class="er-enhanced-remove" href="">' . t('Remove') . '</a>'];
$element['#attached']['library'][] = 'ahs_er_enhanced/remove';
}
} else {
$element['#prefix'] = '<div class="er-enhanced-new">';
$element['#suffix'] = '</div>';
}
return $element;
}
/**
* {@inheritdoc}
*/
public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) {
$element = parent::formElement($items, $delta, $element, $form, $form_state);
$field_name = $items->getName();
$name = $field_name . '[' . $delta . '][target_id]';
$element['target_id']['#target_type'] = 'view';
$element['target_id']['#ajax'] = array(
'callback' => array($this, 'getDisplayIds'),
'event' => 'viewsreference-select',
'progress' => array(
'type' => 'throbber',
'message' => t('Getting display Ids...'),
),
);
$default_value = isset($items[$delta]->getValue()['display_id']) ? $items[$delta]->getValue()['display_id'] : '';
if ($default_value == '') {
$options = $this->getAllViewsDisplayIds();
}
else {
$options = $this->getViewDisplayIds($items[$delta]->getValue()['target_id']);
}
// We build a unique class name from field elements and any parent elements that might exist
// Which will be used to render the display id options in our ajax function
$class = !empty($element['target_id']['#field_parents']) ? implode('-',
$element['target_id']['#field_parents']) . '-' : '';
$class .= $field_name . '-' . $delta . '-display-id';
$element['display_id'] = array(
'#title' => 'Display Id',
'#type' => 'select',
'#options' => $options,
'#default_value' => $default_value,
'#weight' => 10,
'#attributes' => array(
'class' => array(
$class
)
),
'#states' => array(
'visible' => array(
':input[name="' . $name . '"]' => array('filled' => TRUE),
),
),
);
$element['argument'] = array(
'#title' => 'Argument',
'#type' => 'textfield',
'#default_value' => isset($items[$delta]->getValue()['argument']) ? $items[$delta]->getValue()['argument'] : '',
'#weight' => 20,
'#states' => array(
'visible' => array(
':input[name="' . $name . '"]' => array('filled' => TRUE),
),
),
);
$element['#attached']['library'][] = 'viewsreference/viewsreference';
return $element;
}
/**
* {@inheritdoc}
*/
protected function formMultipleElements(FieldItemListInterface $items, array &$form, FormStateInterface $form_state) {
$field_name = $this->fieldDefinition->getName();
$cardinality = $this->fieldDefinition->getFieldStorageDefinition()->getCardinality();
$parents = $form['#parents'];
// Assign a unique identifier to each widget.
$id_prefix = implode('-', array_merge($parents, [$field_name]));
$wrapper_id = Html::getUniqueId($id_prefix . '-add-more-wrapper');
$this->setWrapperId($wrapper_id);
// Load the items for form rebuilds from the field state as they might not
// be in $form_state->getValues() because of validation limitations. Also,
// they are only passed in as $items when editing existing entities.
$field_state = static::getWidgetState($parents, $field_name, $form_state);
if (isset($field_state['items'])) {
$items->setValue($field_state['items']);
}
// Lower the 'items_count' field state property in order to prevent the
// parent implementation to append an extra empty item.
if ($cardinality == FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED) {
$field_state['items_count'] = (count($items) > 1) ? count($items) - 1 : 0;
static::setWidgetState($parents, $field_name, $form_state, $field_state);
}
$elements = parent::formMultipleElements($items, $form, $form_state);
if ($elements) {
if (isset($elements['add_more'])) {
// Update the HTML wrapper ID with the one generated by us.
$elements['#prefix'] = '<div id="' . $this->getWrapperId() . '">';
$add_more_button = $elements['add_more'];
$add_more_button['#value'] = $this->t('Add item');
$add_more_button['#ajax']['callback'] = [get_class($this), 'getWidgetElementAjax'];
$add_more_button['#ajax']['wrapper'] = $this->getWrapperId();
$elements['add_more'] = [
'#type' => 'container',
'#tree' => TRUE,
'#attributes' => ['class' => ['form--inline']],
'new_item' => parent::formElement($items, -1, [], $form, $form_state),
'submit' => $add_more_button,
];
}
}
return $elements;
}
