Version 1
[yaffs-website] / web / core / modules / views / src / Plugin / views / display / Attachment.php
diff --git a/web/core/modules/views/src/Plugin/views/display/Attachment.php b/web/core/modules/views/src/Plugin/views/display/Attachment.php
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+<?php
+
+namespace Drupal\views\Plugin\views\display;
+
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\views\ViewExecutable;
+
+/**
+ * The plugin that handles an attachment display.
+ *
+ * Attachment displays are secondary displays that are 'attached' to a primary
+ * display. Effectively they are a simple way to get multiple views within
+ * the same view. They can share some information.
+ *
+ * @ingroup views_display_plugins
+ *
+ * @ViewsDisplay(
+ *   id = "attachment",
+ *   title = @Translation("Attachment"),
+ *   help = @Translation("Attachments added to other displays to achieve multiple views in the same view."),
+ *   theme = "views_view",
+ *   contextual_links_locations = {""}
+ * )
+ */
+class Attachment extends DisplayPluginBase {
+
+  /**
+   * Whether the display allows the use of a pager or not.
+   *
+   * @var bool
+   */
+  protected $usesPager = FALSE;
+
+  protected function defineOptions() {
+    $options = parent::defineOptions();
+
+    $options['displays'] = ['default' => []];
+    $options['attachment_position'] = ['default' => 'before'];
+    $options['inherit_arguments'] = ['default' => TRUE];
+    $options['inherit_exposed_filters'] = ['default' => FALSE];
+    $options['inherit_pager'] = ['default' => FALSE];
+    $options['render_pager'] = ['default' => FALSE];
+
+    return $options;
+  }
+
+  public function execute() {
+    return $this->view->render($this->display['id']);
+  }
+
+  public function attachmentPositions($position = NULL) {
+    $positions = [
+      'before' => $this->t('Before'),
+      'after' => $this->t('After'),
+      'both' => $this->t('Both'),
+    ];
+
+    if ($position) {
+      return $positions[$position];
+    }
+
+    return $positions;
+  }
+
+  /**
+   * Provide the summary for attachment options in the views UI.
+   *
+   * This output is returned as an array.
+   */
+  public function optionsSummary(&$categories, &$options) {
+    // It is very important to call the parent function here:
+    parent::optionsSummary($categories, $options);
+
+    $categories['attachment'] = [
+      'title' => $this->t('Attachment settings'),
+      'column' => 'second',
+      'build' => [
+        '#weight' => -10,
+      ],
+    ];
+
+    $displays = array_filter($this->getOption('displays'));
+    if (count($displays) > 1) {
+      $attach_to = $this->t('Multiple displays');
+    }
+    elseif (count($displays) == 1) {
+      $display = array_shift($displays);
+      if ($display = $this->view->storage->getDisplay($display)) {
+        $attach_to = $display['display_title'];
+      }
+    }
+
+    if (!isset($attach_to)) {
+      $attach_to = $this->t('Not defined');
+    }
+
+    $options['displays'] = [
+      'category' => 'attachment',
+      'title' => $this->t('Attach to'),
+      'value' => $attach_to,
+    ];
+
+    $options['attachment_position'] = [
+      'category' => 'attachment',
+      'title' => $this->t('Attachment position'),
+      'value' => $this->attachmentPositions($this->getOption('attachment_position')),
+    ];
+
+    $options['inherit_arguments'] = [
+      'category' => 'attachment',
+      'title' => $this->t('Inherit contextual filters'),
+      'value' => $this->getOption('inherit_arguments') ? $this->t('Yes') : $this->t('No'),
+    ];
+
+    $options['inherit_exposed_filters'] = [
+      'category' => 'attachment',
+      'title' => $this->t('Inherit exposed filters'),
+      'value' => $this->getOption('inherit_exposed_filters') ? $this->t('Yes') : $this->t('No'),
+    ];
+
+    $options['inherit_pager'] = [
+      'category' => 'pager',
+      'title' => $this->t('Inherit pager'),
+      'value' => $this->getOption('inherit_pager') ? $this->t('Yes') : $this->t('No'),
+    ];
+
+    $options['render_pager'] = [
+      'category' => 'pager',
+      'title' => $this->t('Render pager'),
+      'value' => $this->getOption('render_pager') ? $this->t('Yes') : $this->t('No'),
+    ];
+
+  }
+
+  /**
+   * Provide the default form for setting options.
+   */
+  public function buildOptionsForm(&$form, FormStateInterface $form_state) {
+    // It is very important to call the parent function here:
+    parent::buildOptionsForm($form, $form_state);
+
+    switch ($form_state->get('section')) {
+      case 'inherit_arguments':
+        $form['#title'] .= $this->t('Inherit contextual filters');
+        $form['inherit_arguments'] = [
+          '#type' => 'checkbox',
+          '#title' => $this->t('Inherit'),
+          '#description' => $this->t('Should this display inherit its contextual filter values from the parent display to which it is attached?'),
+          '#default_value' => $this->getOption('inherit_arguments'),
+        ];
+        break;
+      case 'inherit_exposed_filters':
+        $form['#title'] .= $this->t('Inherit exposed filters');
+        $form['inherit_exposed_filters'] = [
+          '#type' => 'checkbox',
+          '#title' => $this->t('Inherit'),
+          '#description' => $this->t('Should this display inherit its exposed filter values from the parent display to which it is attached?'),
+          '#default_value' => $this->getOption('inherit_exposed_filters'),
+        ];
+        break;
+      case 'inherit_pager':
+        $form['#title'] .= $this->t('Inherit pager');
+        $form['inherit_pager'] = [
+          '#type' => 'checkbox',
+          '#title' => $this->t('Inherit'),
+          '#description' => $this->t('Should this display inherit its paging values from the parent display to which it is attached?'),
+          '#default_value' => $this->getOption('inherit_pager'),
+        ];
+        break;
+      case 'render_pager':
+        $form['#title'] .= $this->t('Render pager');
+        $form['render_pager'] = [
+          '#type' => 'checkbox',
+          '#title' => $this->t('Render'),
+          '#description' => $this->t('Should this display render the pager values? This is only meaningful if inheriting a pager.'),
+          '#default_value' => $this->getOption('render_pager'),
+        ];
+        break;
+      case 'attachment_position':
+        $form['#title'] .= $this->t('Position');
+        $form['attachment_position'] = [
+          '#title' => $this->t('Position'),
+          '#type' => 'radios',
+          '#description' => $this->t('Attach before or after the parent display?'),
+          '#options' => $this->attachmentPositions(),
+          '#default_value' => $this->getOption('attachment_position'),
+        ];
+        break;
+      case 'displays':
+        $form['#title'] .= $this->t('Attach to');
+        $displays = [];
+        foreach ($this->view->storage->get('display') as $display_id => $display) {
+          if ($this->view->displayHandlers->has($display_id) && $this->view->displayHandlers->get($display_id)->acceptAttachments()) {
+            $displays[$display_id] = $display['display_title'];
+          }
+        }
+        $form['displays'] = [
+          '#title' => $this->t('Displays'),
+          '#type' => 'checkboxes',
+          '#description' => $this->t('Select which display or displays this should attach to.'),
+          '#options' => array_map('\Drupal\Component\Utility\Html::escape', $displays),
+          '#default_value' => $this->getOption('displays'),
+        ];
+        break;
+    }
+  }
+
+  /**
+   * Perform any necessary changes to the form values prior to storage.
+   * There is no need for this function to actually store the data.
+   */
+  public function submitOptionsForm(&$form, FormStateInterface $form_state) {
+    // It is very important to call the parent function here:
+    parent::submitOptionsForm($form, $form_state);
+    $section = $form_state->get('section');
+    switch ($section) {
+      case 'displays':
+        $form_state->setValue($section, array_filter($form_state->getValue($section)));
+      case 'inherit_arguments':
+      case 'inherit_pager':
+      case 'render_pager':
+      case 'inherit_exposed_filters':
+      case 'attachment_position':
+        $this->setOption($section, $form_state->getValue($section));
+        break;
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function attachTo(ViewExecutable $view, $display_id, array &$build) {
+    $displays = $this->getOption('displays');
+
+    if (empty($displays[$display_id])) {
+      return;
+    }
+
+    if (!$this->access()) {
+      return;
+    }
+
+    $args = $this->getOption('inherit_arguments') ? $this->view->args : [];
+    $view->setArguments($args);
+    $view->setDisplay($this->display['id']);
+    if ($this->getOption('inherit_pager')) {
+      $view->display_handler->usesPager = $this->view->displayHandlers->get($display_id)->usesPager();
+      $view->display_handler->setOption('pager', $this->view->displayHandlers->get($display_id)->getOption('pager'));
+    }
+
+    $attachment = $view->buildRenderable($this->display['id'], $args);
+
+    switch ($this->getOption('attachment_position')) {
+      case 'before':
+        $this->view->attachment_before[] = $attachment;
+        break;
+      case 'after':
+        $this->view->attachment_after[] = $attachment;
+        break;
+      case 'both':
+        $this->view->attachment_before[] = $attachment;
+        $this->view->attachment_after[] = $attachment;
+        break;
+    }
+
+  }
+
+  /**
+   * Attachment displays only use exposed widgets if
+   * they are set to inherit the exposed filter settings
+   * of their parent display.
+   */
+  public function usesExposed() {
+    if (!empty($this->options['inherit_exposed_filters']) && parent::usesExposed()) {
+      return TRUE;
+    }
+    return FALSE;
+  }
+
+  /**
+   * If an attachment is set to inherit the exposed filter
+   * settings from its parent display, then don't render and
+   * display a second set of exposed filter widgets.
+   */
+  public function displaysExposed() {
+    return $this->options['inherit_exposed_filters'] ? FALSE : TRUE;
+  }
+
+  public function renderPager() {
+    return $this->usesPager() && $this->getOption('render_pager');
+  }
+
+}