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<?php |
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/** |
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* Contains \Drupal\entity_browser\Plugin\EntityBrowser\SelectionDisplay\MultiStepDisplay. |
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*/ |
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namespace Drupal\entity_browser\Plugin\EntityBrowser\SelectionDisplay; |
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use Drupal\Core\Form\FormStateInterface; |
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use Drupal\entity_browser\SelectionDisplayBase; |
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/** |
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* Show current selection and delivers selected entities. |
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* |
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* @EntityBrowserSelectionDisplay( |
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* id = "multi_step_display", |
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* label = @Translation("Multi step selection display"), |
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* description = @Translation("Show current selection display and delivers selected entities.") |
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* ) |
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*/ |
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class MultiStepDisplay extends SelectionDisplayBase { |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getForm(array &$original_form, FormStateInterface $form_state) { |
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$selected_entities = $form_state->get(['entity_browser', 'selected_entities']); |
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$form = []; |
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$form['#attached']['library'][] = 'entity_browser/multi_step_display'; |
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$form['selected'] = [ |
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'#theme_wrappers' => ['container'], |
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'#attributes' => ['class' => ['selected-entities-list']], |
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'#tree' => TRUE |
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]; |
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foreach ($selected_entities as $id => $entity) { |
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$form['selected']['items_'. $entity->id()] = [ |
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'#theme_wrappers' => ['container'], |
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'#attributes' => [ |
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'class' => ['selected-item-container'], |
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'data-entity-id' => $entity->id() |
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], |
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'display' => ['#markup' => $entity->label()], |
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'remove_button' => [ |
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'#type' => 'submit', |
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'#value' => $this->t('Remove'), |
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'#submit' => [[get_class($this), 'removeItemSubmit']], |
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'#name' => 'remove_' . $entity->id(), |
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'#attributes' => [ |
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'data-row-id' => $id, |
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'data-remove-entity' => 'items_' . $entity->id(), |
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] |
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], |
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'weight' => [ |
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'#type' => 'hidden', |
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'#default_value' => $id, |
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'#attributes' => ['class' => ['weight']] |
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] |
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]; |
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} |
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$form['use_selected'] = array( |
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'#type' => 'submit', |
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'#value' => t('Use selected'), |
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'#name' => 'use_selected', |
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); |
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return $form; |
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} |
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/** |
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* Submit callback for remove buttons. |
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* |
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* @param array $form |
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* @param \Drupal\Core\Form\FormStateInterface $form_state |
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*/ |
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public static function removeItemSubmit(array &$form, FormStateInterface $form_state) { |
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$triggering_element = $form_state->getTriggeringElement(); |
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// Remove weight of entity being removed. |
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$form_state->unsetValue(['selected', $triggering_element['#attributes']['data-remove-entity']]); |
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// Remove entity itself. |
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$selected_entities = &$form_state->get(['entity_browser', 'selected_entities']); |
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unset($selected_entities[$triggering_element['#attributes']['data-row-id']]); |
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static::saveNewOrder($form_state); |
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$form_state->setRebuild(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function submit(array &$form, FormStateInterface $form_state) { |
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$this->saveNewOrder($form_state); |
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if ($form_state->getTriggeringElement()['#name'] == 'use_selected') { |
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$this->selectionDone($form_state); |
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} |
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} |
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/** |
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* Saves new ordering of entities based on weight. |
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* |
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* @param FormStateInterface $form_state |
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* Form state. |
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*/ |
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public static function saveNewOrder(FormStateInterface $form_state) { |
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$selected = $form_state->getValue('selected'); |
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if (!empty($selected)) { |
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$weights = array_column($selected, 'weight'); |
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$selected_entities = $form_state->get(['entity_browser', 'selected_entities']); |
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// If we added new entities to the selection at this step we won't have |
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// weights for them so we have to fake them. |
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if (sizeof($weights) < sizeof($selected_entities)) { |
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for ($new_weigth = (max($weights) + 1); $new_weigth < sizeof($selected_entities); $new_weigth++) { |
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$weights[] = $new_weigth; |
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} |
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} |
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$ordered = array_combine($weights, $selected_entities); |
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ksort($ordered); |
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$form_state->set(['entity_browser', 'selected_entities'], $ordered); |
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} |
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} |
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} |
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drupal-media /
entity_browser
If the size of the collection does not change during the iteration, it is generally a good practice to compute it beforehand, and not on each iteration: