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<?php
namespace Drupal\workflows\Form;
use Drupal\Core\Entity\EntityForm;
use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Form\SubformState;
use Drupal\Core\Plugin\PluginFormFactoryInterface;
use Drupal\workflows\State;
use Drupal\workflows\TransitionInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;
class WorkflowTransitionAddForm extends EntityForm {
protected $pluginFormFactory;
public function __construct(PluginFormFactoryInterface $pluginFormFactory) {
$this->pluginFormFactory = $pluginFormFactory;
}
public static function create(ContainerInterface $container) {
return new static($container
->get('plugin_form.factory'));
}
public function getFormId() {
return 'workflow_transition_add_form';
}
public function form(array $form, FormStateInterface $form_state) {
$form = parent::form($form, $form_state);
$workflow = $this
->getEntity();
$workflow_type = $workflow
->getTypePlugin();
$form['label'] = [
'#type' => 'textfield',
'#title' => $this
->t('Transition label'),
'#maxlength' => 255,
'#default_value' => '',
'#required' => TRUE,
];
$form['id'] = [
'#type' => 'machine_name',
'#machine_name' => [
'exists' => [
$this,
'exists',
],
],
];
$states = array_map([
State::class,
'labelCallback',
], $workflow
->getTypePlugin()
->getStates());
$form['from'] = [
'#type' => 'checkboxes',
'#title' => $this
->t('From'),
'#required' => TRUE,
'#default_value' => [],
'#options' => $states,
];
$form['to'] = [
'#type' => 'radios',
'#title' => $this
->t('To'),
'#required' => TRUE,
'#options' => $states,
];
if ($workflow_type
->hasFormClass(TransitionInterface::PLUGIN_FORM_KEY)) {
$form['type_settings'] = [
'#tree' => TRUE,
];
$subform_state = SubformState::createForSubform($form['type_settings'], $form, $form_state);
$form['type_settings'] += $this->pluginFormFactory
->createInstance($workflow_type, TransitionInterface::PLUGIN_FORM_KEY)
->buildConfigurationForm($form['type_settings'], $subform_state);
}
return $form;
}
public function exists($transition_id) {
$original_workflow = \Drupal::entityTypeManager()
->getStorage('workflow')
->loadUnchanged($this
->getEntity()
->id());
return $original_workflow
->getTypePlugin()
->hasTransition($transition_id);
}
protected function copyFormValuesToEntity(EntityInterface $entity, array $form, FormStateInterface $form_state) {
if (!$form_state
->isValidationComplete()) {
return;
}
$values = $form_state
->getValues();
$entity
->getTypePlugin()
->addTransition($values['id'], $values['label'], array_filter($values['from']), $values['to']);
}
public function validateForm(array &$form, FormStateInterface $form_state) {
$workflow = $this
->getEntity();
$workflow_type = $workflow
->getTypePlugin();
$values = $form_state
->getValues();
foreach (array_filter($values['from']) as $from_state_id) {
if ($workflow
->getTypePlugin()
->hasTransitionFromStateToState($from_state_id, $values['to'])) {
$form_state
->setErrorByName('from][' . $from_state_id, $this
->t('The transition from %from to %to already exists.', [
'%from' => $workflow
->getTypePlugin()
->getState($from_state_id)
->label(),
'%to' => $workflow
->getTypePlugin()
->getState($values['to'])
->label(),
]));
}
}
if ($workflow_type
->hasFormClass(TransitionInterface::PLUGIN_FORM_KEY)) {
$subform_state = SubformState::createForSubform($form['type_settings'], $form, $form_state);
$this->pluginFormFactory
->createInstance($workflow_type, TransitionInterface::PLUGIN_FORM_KEY)
->validateConfigurationForm($form['type_settings'], $subform_state);
}
}
public function save(array $form, FormStateInterface $form_state) {
$workflow = $this->entity;
$workflow_type = $workflow
->getTypePlugin();
$transition = $workflow_type
->getTransition($form_state
->getValue('id'));
if ($workflow_type
->hasFormClass(TransitionInterface::PLUGIN_FORM_KEY)) {
$subform_state = SubformState::createForSubform($form['type_settings'], $form, $form_state);
$subform_state
->set('transition', $transition);
$this->pluginFormFactory
->createInstance($workflow_type, TransitionInterface::PLUGIN_FORM_KEY)
->submitConfigurationForm($form['type_settings'], $subform_state);
}
$workflow
->save();
$this
->messenger()
->addStatus($this
->t('Created %label transition.', [
'%label' => $form_state
->getValue('label'),
]));
$form_state
->setRedirectUrl($workflow
->toUrl('edit-form'));
}
protected function actions(array $form, FormStateInterface $form_state) {
$actions['submit'] = [
'#type' => 'submit',
'#value' => $this
->t('Save'),
'#submit' => [
'::submitForm',
'::save',
],
];
return $actions;
}
}