View source
<?php
namespace Drupal\entity_reference_view_widget\Plugin\Field\FieldWidget;
use Drupal\Component\Utility\Html;
use Drupal\Component\Utility\String;
use Drupal\Core\Ajax\AjaxResponse;
use Drupal\Core\Ajax\OpenModalDialogCommand;
use Drupal\Core\Ajax\SettingsCommand;
use Drupal\Core\Field\FieldItemListInterface;
use Drupal\Core\Field\FieldStorageDefinitionInterface;
use Drupal\Core\Field\WidgetBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\views\Views;
class ViewWidget extends WidgetBase {
public static function defaultSettings() {
return array(
'view' => '',
'pass_argument' => TRUE,
'close_modal' => FALSE,
'allow_duplicates' => FALSE,
) + parent::defaultSettings();
}
public function settingsForm(array $form, FormStateInterface $form_state) {
$displays = Views::getApplicableViews('entity_reference_view_widget_display');
$options = array();
foreach ($displays as $data) {
list($view, $display_id) = $data;
$options[$view->storage
->id() . '|' . $display_id] = String::checkPlain($view->storage
->label() . ' | ' . $view->storage
->getDisplay($display_id)['display_title']);
}
$element['view'] = array(
'#type' => 'select',
'#title' => t('View'),
'#default_value' => $this
->getSetting('view'),
'#options' => $options,
'#description' => t('Specify the View to use for selecting items. Only views that have an "Entityreference View Widget" display are shown.'),
'#required' => TRUE,
);
$element['pass_argument'] = array(
'#type' => 'checkbox',
'#title' => t('Pass selected entity ids to View'),
'#default_value' => $this
->getSetting('pass_argument'),
'#description' => t('If enabled, the View will get all selected entity ids as the first argument. Useful for excluding already selected items.'),
);
$element['close_modal'] = array(
'#type' => 'checkbox',
'#title' => t('Close modal window after submitting the items'),
'#default_value' => $this
->getSetting('close_modal'),
'#description' => t('If enabled, the modal window will close after you had selected the entities from the view and submitted your selection.'),
);
$element['allow_duplicates'] = array(
'#type' => 'checkbox',
'#title' => t('Allow the same entity to be referenced multiple times'),
'#default_value' => $this
->getSetting('allow_duplicates'),
'#description' => t('If enabled, this will allow you to reference the same entity multiple times.'),
);
return $element;
}
public function settingsSummary() {
$summary = array();
$settings = $this
->getSettings();
if (!empty($settings['view'])) {
$summary[] = t('View: @view', array(
'@view' => $settings['view'],
));
}
else {
$summary[] = t('No view configured');
}
$summary[] = t('Pass selected entity ids to View: @pass_argument', array(
'@pass_argument' => $settings['pass_argument'] ? t('Yes') : t('No'),
));
$summary[] = t('Close modal window after submitting the items: @close_modal', array(
'@close_modal' => $settings['close_modal'] ? t('Yes') : t('No'),
));
$summary[] = t('Allow the same entity to be referenced multiple times: @allow_duplicates', array(
'@allow_duplicates' => $settings['allow_duplicates'] ? t('Yes') : t('No'),
));
return $summary;
}
public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) {
$field_name = $this->fieldDefinition
->getName();
$cardinality = $this->fieldDefinition
->getFieldStorageDefinition()
->getCardinality();
$parents = $form['#parents'];
switch ($cardinality) {
case FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED:
$field_state = static::getWidgetState($parents, $field_name, $form_state);
$max = $field_state['items_count'];
$is_multiple = TRUE;
break;
default:
$max = $cardinality - 1;
$is_multiple = $cardinality > 1;
break;
}
$id_prefix = implode('-', array_merge($parents, array(
$field_name,
)));
$wrapper_id = Html::getUniqueId($id_prefix . '-ervw-wrapper');
$element += array(
'#theme' => 'field_multiple_value_form',
'#field_name' => $field_name,
'#cardinality' => $cardinality,
'#cardinality_multiple' => TRUE,
'#required' => $this->fieldDefinition
->isRequired(),
'#max_delta' => $max,
);
if (!$items
->isEmpty()) {
}
else {
$element[0]['#markup'] = t('No items had been added yet. Click "Add items" to launch the widget.');
}
$element['add_more'] = array(
'#name' => strtr($id_prefix, '-', '_') . '_add_more',
'#type' => 'button',
'#value' => t('Add items'),
'#ajax' => array(
'callback' => array(
$this,
'ajaxCallback',
),
),
'#limit_validation_errors' => array(),
'#ervw_settings' => array(
'wrapper' => str_replace('_', '-', $field_name . '-values'),
'cardinality' => $cardinality,
'target_type' => $this
->getFieldSetting('target_type'),
),
'#element_validate' => array(
array(
$this,
'elementValidate',
),
),
);
$form['#attached']['library'][] = 'views/views.ajax';
return $element;
}
public function elementValidate($element, FormStateInterface $form_state, $form) {
$form_state
->setRebuild();
}
protected function formMultipleElements(FieldItemListInterface $items, array &$form, FormStateInterface $form_state) {
$elements = parent::formMultipleElements($items, $form, $form_state);
$form['#attached']['library'][] = 'views/views.ajax';
$elements['add_more'] = array(
'#type' => 'button',
'#value' => t('Add items'),
'#ajax' => array(
'callback' => array(
$this,
'ajaxCallback',
),
),
'#limit_validation_errors' => array(),
);
return $elements;
}
public static function getRows($entity_ids, $settings) {
$entity_ids = array_values($entity_ids);
$rows = array();
if (!empty($entity_ids)) {
$entities = entity_load_multiple($settings['target_type'], $entity_ids);
$max = count($entities);
$delta = 0;
foreach ($entities as $entity_id => $entity_item) {
$rows[] = array(
'target_id' => array(
'#type' => 'checkbox',
'#delta' => $delta,
'#field_suffix' => String::checkPlain($entity_item
->label()),
'#return_value' => $entity_id,
'#value' => $entity_id,
),
'_weight' => array(
'#type' => 'weight',
'#title' => t('Weight for row @number', array(
'@number' => $delta + 1,
)),
'#title_display' => 'invisible',
'#delta' => $max,
'#default_value' => $delta,
'#weight' => 100,
),
);
$delta++;
}
}
return $rows;
}
public function ajaxCallback(array $form, FormStateInterface &$form_state) {
$triggering_element = $form_state
->getTriggeringElement();
if (isset($triggering_element['#ervw_settings'])) {
$response = new AjaxResponse();
$view = $this
->getSetting('view');
if (!empty($view)) {
list($view_id, $display_id) = explode('|', $view);
if ($view = Views::getView($view_id)) {
$view
->setAjaxEnabled(TRUE);
$preview = $view
->preview($display_id);
$response
->addCommand(new SettingsCommand($view->element['#attached']['js'][0]['data'], TRUE));
$form_settings = array(
'view' => $view,
'preview' => $preview,
'settings' => $triggering_element['#ervw_settings'] + $this
->getSettings(),
);
$modal_form = \Drupal::formBuilder()
->getForm('Drupal\\entity_reference_view_widget\\Form\\ModalForm', $form_settings);
$response
->addCommand(new SettingsCommand($modal_form['actions']['add_items']['#attached']['js'][0]['data'], TRUE));
$modal_content = '';
if (!empty($view->exposed_widgets)) {
$modal_content .= drupal_render($view->exposed_widgets);
}
$modal_content .= drupal_render($modal_form);
$response
->addCommand(new OpenModalDialogCommand($view->storage
->label(), $modal_content, array(
'width' => 700,
)));
}
}
return $response;
}
}
}
