diff core/modules/views_ui/src/ViewFormBase.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/modules/views_ui/src/ViewFormBase.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,170 @@
+<?php
+
+namespace Drupal\views_ui;
+
+use Drupal\Core\Entity\EntityForm;
+use Drupal\Core\Form\FormStateInterface;
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
+use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
+
+/**
+ * Base form for Views forms.
+ */
+abstract class ViewFormBase extends EntityForm {
+
+  /**
+   * The name of the display used by the form.
+   *
+   * @var string
+   */
+  protected $displayID;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function init(FormStateInterface $form_state) {
+    parent::init($form_state);
+
+    // @todo Remove the need for this.
+    $form_state->loadInclude('views_ui', 'inc', 'admin');
+    $form_state->set('view', $this->entity);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, FormStateInterface $form_state, $display_id = NULL) {
+    if (isset($display_id) && $form_state->has('display_id') && ($display_id !== $form_state->get('display_id'))) {
+      throw new \InvalidArgumentException('Mismatch between $form_state->get(\'display_id\') and $display_id.');
+    }
+    $this->displayID = $form_state->has('display_id') ? $form_state->get('display_id') : $display_id;
+    return parent::buildForm($form, $form_state);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function prepareEntity() {
+    // Determine the displays available for editing.
+    if ($tabs = $this->getDisplayTabs($this->entity)) {
+      if (empty($this->displayID)) {
+        // If a display isn't specified, use the first one after sorting by
+        // #weight.
+        uasort($tabs, 'Drupal\Component\Utility\SortArray::sortByWeightProperty');
+        foreach ($tabs as $id => $tab) {
+          if (!isset($tab['#access']) || $tab['#access']) {
+            $this->displayID = $id;
+            break;
+          }
+        }
+      }
+      // If a display is specified, but we don't have access to it, return
+      // an access denied page.
+      if ($this->displayID && !isset($tabs[$this->displayID])) {
+        throw new NotFoundHttpException();
+      }
+      elseif ($this->displayID && (isset($tabs[$this->displayID]['#access']) && !$tabs[$this->displayID]['#access'])) {
+        throw new AccessDeniedHttpException();
+      }
+
+    }
+    elseif ($this->displayID) {
+      throw new NotFoundHttpException();
+    }
+  }
+
+  /**
+   * Adds tabs for navigating across Displays when editing a View.
+   *
+   * This function can be called from hook_menu_local_tasks_alter() to implement
+   * these tabs as secondary local tasks, or it can be called from elsewhere if
+   * having them as secondary local tasks isn't desired. The caller is responsible
+   * for setting the active tab's #active property to TRUE.
+   *
+   * @param $display_id
+   *   The display_id which is edited on the current request.
+   */
+  public function getDisplayTabs(ViewUI $view) {
+    $executable = $view->getExecutable();
+    $executable->initDisplay();
+    $display_id = $this->displayID;
+    $tabs = [];
+
+    // Create a tab for each display.
+    foreach ($view->get('display') as $id => $display) {
+      // Get an instance of the display plugin, to make sure it will work in the
+      // UI.
+      $display_plugin = $executable->displayHandlers->get($id);
+      if (empty($display_plugin)) {
+        continue;
+      }
+
+      $tabs[$id] = [
+        '#theme' => 'menu_local_task',
+        '#weight' => $display['position'],
+        '#link' => [
+          'title' => $this->getDisplayLabel($view, $id),
+          'localized_options' => [],
+          'url' => $view->urlInfo('edit-display-form')->setRouteParameter('display_id', $id),
+        ],
+      ];
+      if (!empty($display['deleted'])) {
+        $tabs[$id]['#link']['localized_options']['attributes']['class'][] = 'views-display-deleted-link';
+      }
+      if (isset($display['display_options']['enabled']) && !$display['display_options']['enabled']) {
+        $tabs[$id]['#link']['localized_options']['attributes']['class'][] = 'views-display-disabled-link';
+      }
+    }
+
+    // If the default display isn't supposed to be shown, don't display its tab, unless it's the only display.
+    if ((!$this->isDefaultDisplayShown($view) && $display_id != 'default') && count($tabs) > 1) {
+      $tabs['default']['#access'] = FALSE;
+    }
+
+    // Mark the display tab as red to show validation errors.
+    $errors = $executable->validate();
+    foreach ($view->get('display') as $id => $display) {
+      if (!empty($errors[$id])) {
+        // Always show the tab.
+        $tabs[$id]['#access'] = TRUE;
+        // Add a class to mark the error and a title to make a hover tip.
+        $tabs[$id]['#link']['localized_options']['attributes']['class'][] = 'error';
+        $tabs[$id]['#link']['localized_options']['attributes']['title'] = $this->t('This display has one or more validation errors.');
+      }
+    }
+
+    return $tabs;
+  }
+
+  /**
+   * Controls whether or not the default display should have its own tab on edit.
+   */
+  public function isDefaultDisplayShown(ViewUI $view) {
+    // Always show the default display for advanced users who prefer that mode.
+    $advanced_mode = \Drupal::config('views.settings')->get('ui.show.master_display');
+    // For other users, show the default display only if there are no others, and
+    // hide it if there's at least one "real" display.
+    $additional_displays = (count($view->getExecutable()->displayHandlers) == 1);
+
+    return $advanced_mode || $additional_displays;
+  }
+
+  /**
+   * Placeholder function for overriding $display['display_title'].
+   *
+   * @todo Remove this function once editing the display title is possible.
+   */
+  public function getDisplayLabel(ViewUI $view, $display_id, $check_changed = TRUE) {
+    $display = $view->get('display');
+    $title = $display_id == 'default' ? $this->t('Master') : $display[$display_id]['display_title'];
+    $title = views_ui_truncate($title, 25);
+
+    if ($check_changed && !empty($view->changed_display[$display_id])) {
+      $changed = '*';
+      $title = $title . $changed;
+    }
+
+    return $title;
+  }
+
+}