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<?php |
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/** |
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* @file |
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* Definition of Drupal\entity_browser\Plugin\views\display\EntityBrowser. |
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*/ |
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namespace Drupal\entity_browser\Plugin\views\display; |
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use Drupal\Core\Form\FormStateInterface; |
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use Drupal\views\Plugin\views\display\DisplayPluginBase; |
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/** |
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* The plugin that handles entity browser display. |
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* |
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* @ingroup views_display_plugins |
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* |
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* @ViewsDisplay( |
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* id = "entity_browser", |
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* title = @Translation("Entity browser"), |
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* help = @Translation("Displays a view as Entity browser widget."), |
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* theme = "views_view", |
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* admin = @Translation("Entity browser") |
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* ) |
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*/ |
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class EntityBrowser extends DisplayPluginBase { |
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/** |
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* {@inheritdoc}. |
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*/ |
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public function execute() { |
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parent::execute(); |
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$render = ['view' => $this->view->render()]; |
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$this->handleForm($render); |
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return $render; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function ajaxEnabled() { |
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// Force AJAX as this Display Plugin will almost always be embedded inside |
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// EntityBrowserForm, which breaks normal exposed form submits. |
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return TRUE; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function defineOptions() { |
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$options = parent::defineOptions(); |
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$options['use_ajax']['default'] = TRUE; |
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return $options; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function optionsSummary(&$categories, &$options) { |
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parent::optionsSummary($categories, $options); |
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if (isset($options['use_ajax'])) { |
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$options['use_ajax']['value'] = $this->t('Yes (Forced)'); |
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} |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function buildOptionsForm(&$form, FormStateInterface $form_state) { |
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parent::buildOptionsForm($form, $form_state); |
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// Disable the ability to toggle AJAX support, as we forcibly enable AJAX |
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// in our ajaxEnabled() implementation. |
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if (isset($form['use_ajax'])) { |
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$form['use_ajax'] = [ |
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'#description' => $this->t('Entity Browser requires Views to use AJAX.'), |
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'#type' => 'checkbox', |
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'#title' => $this->t('Use AJAX'), |
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'#default_value' => 1, |
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'#disabled' => TRUE, |
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]; |
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} |
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} |
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/** |
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* {@inheritdoc}. |
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*/ |
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function preview() { |
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return $this->execute(); |
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} |
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/** |
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* Pre render callback for a view. Based on DisplayPluginBase::elementPreRender() |
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* except that we removed form part which need to handle by our own. |
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*/ |
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public function elementPreRender(array $element) { |
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$view = $element['#view']; |
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$empty = empty($view->result); |
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// Force a render array so CSS/JS can be attached. |
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if (!is_array($element['#rows'])) { |
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$element['#rows'] = ['#markup' => $element['#rows']]; |
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} |
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$element['#header'] = $view->display_handler->renderArea('header', $empty); |
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$element['#footer'] = $view->display_handler->renderArea('footer', $empty); |
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$element['#empty'] = $empty ? $view->display_handler->renderArea('empty', $empty) : []; |
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$element['#exposed'] = !empty($view->exposed_widgets) ? $view->exposed_widgets : []; |
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$element['#more'] = $view->display_handler->renderMoreLink(); |
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$element['#feed_icons'] = !empty($view->feedIcons) ? $view->feedIcons : []; |
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if ($view->display_handler->renderPager()) { |
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$exposed_input = isset($view->exposed_raw_input) ? $view->exposed_raw_input : NULL; |
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$element['#pager'] = $view->renderPager($exposed_input); |
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} |
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if (!empty($view->attachment_before)) { |
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$element['#attachment_before'] = $view->attachment_before; |
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} |
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if (!empty($view->attachment_after)) { |
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$element['#attachment_after'] = $view->attachment_after; |
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} |
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return $element; |
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} |
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/** |
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* Handles form elements on a view. |
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*/ |
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protected function handleForm(&$render) { |
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if (!empty($this->view->field['entity_browser_select'])) { |
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$this->view->field['entity_browser_select']->viewsForm($render); |
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$render['#post_render'][] = [get_class($this), 'postRender']; |
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$substitutions = []; |
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foreach ($this->view->result as $row_id => $row) { |
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$form_element_row_id = $row_id; |
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$substitutions[] = [ |
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'placeholder' => '<!--form-item-entity_browser_select--' . $form_element_row_id . '-->', |
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'field_name' => 'entity_browser_select', |
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'row_id' => $form_element_row_id, |
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]; |
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} |
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$render['#substitutions'] = [ |
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'#type' => 'value', |
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'#value' => $substitutions, |
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]; |
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} |
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} |
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/** |
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* Post render callback that moves form elements into the view. |
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* |
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* Form elements need to be added out of view to be correctly detected by Form |
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* API and then added into the view afterwards. Views use the same approach for |
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* bulk operations. |
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*/ |
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public static function postRender($content, $element) { |
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// Placeholders and their substitutions (usually rendered form elements). |
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$search = $replace = []; |
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// Add in substitutions provided by the form. |
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foreach ($element['#substitutions']['#value'] as $substitution) { |
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$field_name = $substitution['field_name']; |
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$row_id = $substitution['row_id']; |
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$search[] = $substitution['placeholder']; |
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$replace[] = isset($element[$field_name][$row_id]) ? drupal_render($element[$field_name][$row_id]) : ''; |
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} |
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// Add in substitutions from hook_views_form_substitutions(). |
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$substitutions = \Drupal::moduleHandler()->invokeAll('views_form_substitutions'); |
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foreach ($substitutions as $placeholder => $substitution) { |
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$search[] = $placeholder; |
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$replace[] = $substitution; |
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} |
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// We cannot render exposed form within the View, as nested forms are not |
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// standard and will break entity selection. |
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$search[] = '<form'; |
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$replace[] = '<div'; |
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$search[] = '</form>'; |
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$replace[] = '</div>'; |
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$content = str_replace($search, $replace, $content); |
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return $content; |
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} |
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} |
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drupal-media /
entity_browser
Adding explicit visibility (
private,protected, orpublic) is generally recommend to communicate to other developers how, and from where this method is intended to be used.