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<?php
namespace Drupal\taxonomy_manager\Form;
use Drupal\Core\Ajax\AjaxResponse;
use Drupal\Core\Url;
use Drupal\Core\Ajax\ReplaceCommand;
use Drupal\Core\Form\FormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\taxonomy\TermStorage;
use Drupal\taxonomy\VocabularyInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Drupal\Core\Form\FormBuilderInterface;
class ExportTermsForm extends FormBase {
protected $termStorage;
public function __construct(TermStorage $termStorage) {
$this->termStorage = $termStorage;
}
public static function create(ContainerInterface $container) {
return new static($container
->get('entity_type.manager')
->getStorage('taxonomy_term'));
}
public function buildForm(array $form, FormStateInterface $form_state, VocabularyInterface $taxonomy_vocabulary = NULL, $selected_terms = []) {
$form['voc'] = [
'#type' => 'value',
'#value' => $taxonomy_vocabulary,
];
$form['selected_terms']['#tree'] = TRUE;
$items = [];
foreach ($selected_terms as $t) {
$term = $this->termStorage
->load($t);
$items[] = $term
->getName();
$form['selected_terms'][$t] = [
'#type' => 'value',
'#value' => $t,
];
}
if (count($items)) {
$form['terms'] = [
'#theme' => 'item_list',
'#items' => $items,
'#title' => $this
->t('Selected terms for export:'),
];
}
$selectedExportType = 'whole';
$exportType = [
'whole' => $this
->t('Whole Vocabulary'),
'root' => $this
->t('Root level terms only'),
];
if (!empty($selected_terms)) {
$selectedExportType = 'child';
$exportType['child'] = $this
->t('Child terms of a selected term');
}
$form['export_type'] = [
'#type' => 'radios',
'#title' => $this
->t('Terms to export'),
'#options' => $exportType,
'#default_value' => $selectedExportType,
];
$form['exported_data'] = [
'#type' => 'textarea',
'#title' => $this
->t('Exported data'),
'#default_value' => 'dv',
'#rows' => 6,
'#prefix' => '<div id="export-wrapper">',
'#suffix' => '</div>',
];
$actionUrl = Url::fromRoute('taxonomy_manager.admin_vocabulary.export', [
'taxonomy_vocabulary' => $taxonomy_vocabulary
->id(),
])
->toString();
$form['#action'] = $actionUrl;
$form['export'] = [
'#type' => 'button',
'#value' => $this
->t('Export'),
'#ajax' => [
'callback' => '::exportTerms',
'wrapper' => 'export-wrapper',
'event' => 'click',
'url' => $actionUrl,
'options' => [
'query' => [
FormBuilderInterface::AJAX_FORM_REQUEST => TRUE,
],
],
],
];
$form['export']['#ajax']['options']['query'] += \Drupal::request()->query
->all();
return $form;
}
public function validateForm(array &$form, FormStateInterface $form_state) {
parent::validateForm($form, $form_state);
}
public function submitForm(array &$form, FormStateInterface $form_state) {
}
public function getFormId() {
return 'taxonomy_manager_export_form';
}
public function exportTerms(array &$form, FormStateInterface $form_state) {
$form['exported_data']['#value'] = 'bam';
$response = new AjaxResponse();
$response
->addCommand(new ReplaceCommand('#export-wrapper', $form['exported_data']));
return $response;
}
public function myAjaxCallback(array &$form, FormStateInterface $form_state) {
if ($selectedValue = $form_state
->getValue('example_select')) {
$selectedText = $form['example_select']['#options'][$selectedValue];
$form['output']['#value'] = $selectedText;
}
$response = new AjaxResponse();
$response
->addCommand(new ReplaceCommand('#edit-output', $form['output']));
return $response;
}
}