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<?php
namespace Drupal\yamlform\Element;
use Drupal\Component\Utility\NestedArray;
use Drupal\Core\Serialization\Yaml;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Render\Element\FormElement;
use Drupal\Core\Url;
use Drupal\yamlform\Entity\YamlFormOptions as YamlFormOptionsEntity;
class YamlFormElementOptions extends FormElement {
const CUSTOM_OPTION = '';
public function getInfo() {
$class = get_class($this);
return [
'#input' => TRUE,
'#likert' => FALSE,
'#process' => [
[
$class,
'processYamlFormElementOptions',
],
[
$class,
'processAjaxForm',
],
],
'#theme_wrappers' => [
'form_element',
],
'#custom__type' => 'yamlform_options',
];
}
public static function valueCallback(&$element, $input, FormStateInterface $form_state) {
if ($input === FALSE) {
if (isset($element['#default_value'])) {
if (is_string($element['#default_value'])) {
return YamlFormOptionsEntity::load($element['#default_value']) ? $element['#default_value'] : [];
}
else {
return $element['#default_value'];
}
}
else {
return [];
}
}
elseif (!empty($input['options'])) {
return $input['options'];
}
elseif (isset($input['custom']['options'])) {
return $input['custom']['options'];
}
else {
return [];
}
}
public static function processYamlFormElementOptions(&$element, FormStateInterface $form_state, &$complete_form) {
$element['#tree'] = TRUE;
$options = [];
$yamlform_options = YamlFormOptionsEntity::loadMultiple();
foreach ($yamlform_options as $id => $yamlform_option) {
if ($element['#likert'] && strpos($id, 'likert_') !== 0) {
continue;
}
$options[$id] = $yamlform_option
->label();
}
asort($options);
$t_args = [
'@type' => $element['#likert'] ? t('answers') : t('options'),
':href' => Url::fromRoute('entity.yamlform_options.collection')
->toString(),
];
$element['options'] = [
'#type' => 'select',
'#description' => t('Please select <a href=":href">predefined @type</a> or enter custom @type.', $t_args),
'#options' => [
self::CUSTOM_OPTION => t('Custom...'),
] + $options,
'#attributes' => [
'class' => [
'js-' . $element['#id'] . '-options',
],
],
'#error_no_message' => TRUE,
'#default_value' => isset($element['#default_value']) && !is_array($element['#default_value']) ? $element['#default_value'] : '',
];
if ($element['#custom__type'] === 'yamlform_multiple') {
$element['custom'] = [
'#type' => 'yamlform_multiple',
'#title' => $element['#title'],
'#title_display' => 'invisible',
'#states' => [
'visible' => [
'select.js-' . $element['#id'] . '-options' => [
'value' => '',
],
],
],
'#error_no_message' => TRUE,
'#default_value' => isset($element['#default_value']) && !is_string($element['#default_value']) ? $element['#default_value'] : [],
];
}
else {
$element['custom'] = [
'#type' => 'yamlform_options',
'#title' => $element['#title'],
'#title_display' => 'invisible',
'#label' => $element['#likert'] ? t('answer') : t('option'),
'#labels' => $element['#likert'] ? t('answers') : t('options'),
'#states' => [
'visible' => [
'select.js-' . $element['#id'] . '-options' => [
'value' => '',
],
],
],
'#error_no_message' => TRUE,
'#default_value' => isset($element['#default_value']) && !is_string($element['#default_value']) ? $element['#default_value'] : [],
];
}
$element['#element_validate'] = [
[
get_called_class(),
'validateYamlFormElementOptions',
],
];
return $element;
}
public static function validateYamlFormElementOptions(&$element, FormStateInterface $form_state, &$complete_form) {
$options_value = NestedArray::getValue($form_state
->getValues(), $element['options']['#parents']);
$custom_value = NestedArray::getValue($form_state
->getValues(), $element['custom']['#parents']);
$value = $options_value;
if ($options_value == self::CUSTOM_OPTION) {
try {
$value = is_string($custom_value) ? Yaml::decode($custom_value) : $custom_value;
} catch (\Exception $exception) {
}
}
$has_access = !isset($element['#access']) || $element['#access'] === TRUE;
if ($element['#required'] && empty($value) && $has_access) {
if (isset($element['#required_error'])) {
$form_state
->setError($element, $element['#required_error']);
}
elseif (isset($element['#title'])) {
$form_state
->setError($element, t('@name field is required.', [
'@name' => $element['#title'],
]));
}
else {
$form_state
->setError($element);
}
}
$form_state
->setValueForElement($element['options'], NULL);
$form_state
->setValueForElement($element['custom'], NULL);
$form_state
->setValueForElement($element, $value);
}
}