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<?php
namespace Drupal\book\Form;
use Drupal\Core\Form\ConfigFormBase;
use Drupal\Core\Form\FormStateInterface;
/**
* Configure book settings for this site.
*/
class BookSettingsForm extends ConfigFormBase {
/**
* {@inheritdoc}
*/
public function getFormId() {
return 'book_admin_settings';
}
/**
* {@inheritdoc}
*/
protected function getEditableConfigNames() {
return ['book.settings'];
}
/**
* {@inheritdoc}
*/
public function buildForm(array $form, FormStateInterface $form_state) {
$types = node_type_get_names();
$config = $this->config('book.settings');
$form['book_allowed_types'] = [
'#type' => 'checkboxes',
'#title' => $this->t('Content types allowed in book outlines'),
'#default_value' => $config->get('allowed_types'),
'#options' => $types,
'#description' => $this->t('Users with the %outline-perm permission can add all content types.', ['%outline-perm' => $this->t('Administer book outlines')]),
'#required' => TRUE,
];
$form['book_child_type'] = [
'#type' => 'radios',
'#title' => $this->t('Content type for the <em>Add child page</em> link'),
'#default_value' => $config->get('child_type'),
'#options' => $types,
'#required' => TRUE,
];
$form['array_filter'] = ['#type' => 'value', '#value' => TRUE];
return parent::buildForm($form, $form_state);
}
/**
* {@inheritdoc}
*/
public function validateForm(array &$form, FormStateInterface $form_state) {
$child_type = $form_state->getValue('book_child_type');
if ($form_state->isValueEmpty(['book_allowed_types', $child_type])) {
$form_state->setErrorByName('book_child_type', $this->t('The content type for the %add-child link must be one of those selected as an allowed book outline type.', ['%add-child' => $this->t('Add child page')]));
}
parent::validateForm($form, $form_state);
}
/**
* {@inheritdoc}
*/
public function submitForm(array &$form, FormStateInterface $form_state) {
$allowed_types = array_filter($form_state->getValue('book_allowed_types'));
// We need to save the allowed types in an array ordered by machine_name so
// that we can save them in the correct order if node type changes.
// @see book_node_type_update().
sort($allowed_types);
$this->config('book.settings')
// Remove unchecked types.
->set('allowed_types', $allowed_types)
->set('child_type', $form_state->getValue('book_child_type'))
->save();
parent::submitForm($form, $form_state);
}
}