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<?php |
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/** |
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* @file |
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* Contains \Drupal\entity_browser\Form\EntityBrowserForm. |
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*/ |
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namespace Drupal\entity_browser\Form; |
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use Drupal\Core\Form\FormBase; |
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use Drupal\Core\Form\FormStateInterface; |
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use Drupal\entity_browser\DisplayAjaxInterface; |
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use Drupal\entity_browser\EntityBrowserFormInterface; |
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use Drupal\entity_browser\EntityBrowserInterface; |
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/** |
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* The entity browser form. |
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*/ |
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class EntityBrowserForm extends FormBase implements EntityBrowserFormInterface { |
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/** |
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* The entity browser object. |
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* |
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* @var \Drupal\entity_browser\EntityBrowserInterface |
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*/ |
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protected $entity_browser; |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getFormId() { |
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return 'entity_browser_' . $this->entity_browser->id() . '_form'; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function setEntityBrowser(EntityBrowserInterface $entity_browser) { |
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$this->entity_browser = $entity_browser; |
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} |
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/** |
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* Initializes form state. |
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* |
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* @param \Drupal\Core\Form\FormStateInterface |
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* Form state object. |
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*/ |
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protected function init(FormStateInterface $form_state) { |
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// Flag that this form has been initialized. |
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$form_state->set('entity_form_initialized', TRUE); |
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$form_state->set(['entity_browser', 'instance_uuid'], \Drupal::service('uuid')->generate()); |
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$form_state->set(['entity_browser', 'selected_entities'], []); |
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$form_state->set(['entity_browser', 'selection_completed'], FALSE); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function buildForm(array $form, FormStateInterface $form_state) { |
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// During the initial form build, add this form object to the form state and |
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// allow for initial preparation before form building and processing. |
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if (!$form_state->has('entity_form_initialized')) { |
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$this->init($form_state); |
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} |
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$form['#attributes']['class'][] = 'entity-browser-form'; |
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$form['#browser_parts'] = [ |
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'widget_selector' => 'widget_selector', |
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'widget' => 'widget', |
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'selection_display' => 'selection_display', |
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]; |
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$this->entity_browser |
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->getWidgetSelector() |
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->setDefaultWidget($this->getCurrentWidget($form_state)); |
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$form[$form['#browser_parts']['widget_selector']] = $this->entity_browser |
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->getWidgetSelector() |
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->getForm($form, $form_state); |
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$form[$form['#browser_parts']['widget']] = $this->entity_browser |
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->getWidgets() |
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->get($this->getCurrentWidget($form_state)) |
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->getForm($form, $form_state, $this->entity_browser->getAdditionalWidgetParameters()); |
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$form['actions'] = [ |
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'submit' => [ |
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'#type' => 'submit', |
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'#value' => t('Select'), |
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'#attributes' => [ |
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'class' => ['is-entity-browser-submit'], |
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], |
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], |
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]; |
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$form[$form['#browser_parts']['selection_display']] = $this->entity_browser |
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->getSelectionDisplay() |
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->getForm($form, $form_state); |
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if ($this->entity_browser->getDisplay() instanceOf DisplayAjaxInterface) { |
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$this->entity_browser->getDisplay()->addAjax($form); |
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} |
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return $form; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function validateForm(array &$form, FormStateInterface $form_state) { |
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$this->entity_browser->getWidgetSelector()->validate($form, $form_state); |
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$this->entity_browser->getWidgets()->get($this->getCurrentWidget($form_state))->validate($form, $form_state); |
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$this->entity_browser->getSelectionDisplay()->validate($form, $form_state); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function submitForm(array &$form, FormStateInterface $form_state) { |
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$original_widget = $this->getCurrentWidget($form_state); |
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if ($new_widget = $this->entity_browser->getWidgetSelector()->submit($form, $form_state)) { |
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$this->setCurrentWidget($new_widget, $form_state); |
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} |
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// Only call widget submit if we didn't change the widget. |
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if ($original_widget == $this->getCurrentWidget($form_state)) { |
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$this->entity_browser |
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->getWidgets() |
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->get($this->getCurrentWidget($form_state)) |
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->submit($form[$form['#browser_parts']['widget']], $form, $form_state); |
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$this->entity_browser |
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->getSelectionDisplay() |
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->submit($form, $form_state); |
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} |
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if (!$this->isSelectionCompleted($form_state)) { |
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$form_state->setRebuild(); |
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} |
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else { |
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$this->entity_browser->getDisplay()->selectionCompleted($this->getSelectedEntities($form_state)); |
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} |
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} |
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/** |
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* Returns the widget that is currently selected. |
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* |
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* @param \Drupal\Core\Form\FormStateInterface $form_state |
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* The current state of the form. |
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* |
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* @return string |
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* ID of currently selected widget. |
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*/ |
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protected function getCurrentWidget(FormStateInterface $form_state) { |
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// Do not use has() as that returns TRUE if the value is NULL. |
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if (!$form_state->get('entity_browser_current_widget')) { |
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$form_state->set('entity_browser_current_widget', $this->entity_browser->getFirstWidget()); |
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} |
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return $form_state->get('entity_browser_current_widget'); |
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} |
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/** |
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* Sets widget that is currently active. |
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* |
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* @param string $widget |
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* New active widget UUID. |
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* @param \Drupal\Core\Form\FormStateInterface $form_state |
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* Form state. |
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*/ |
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protected function setCurrentWidget($widget, FormStateInterface $form_state) { |
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$form_state->set('entity_browser_current_widget', $widget); |
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} |
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/** |
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* Indicates selection is done. |
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* |
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* @param \Drupal\Core\Form\FormStateInterface $form_state |
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* Form state. |
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* |
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* @return bool |
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* Indicates selection is done. |
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*/ |
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protected function isSelectionCompleted(FormStateInterface $form_state) { |
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return (bool) $form_state->get(['entity_browser', 'selection_completed']); |
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} |
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/** |
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* Returns currently selected entities. |
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* |
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* @param \Drupal\Core\Form\FormStateInterface $form_state |
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* Form state. |
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* |
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* @return \Drupal\Core\Entity\EntityInterface[] |
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* Array of currently selected entities. |
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*/ |
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protected function getSelectedEntities(FormStateInterface $form_state) { |
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return $form_state->get(['entity_browser', 'selected_entities']); |
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} |
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} |
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