diff core/modules/views/src/Plugin/Block/ViewsBlock.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/modules/views/src/Plugin/Block/ViewsBlock.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,150 @@
+<?php
+
+namespace Drupal\views\Plugin\Block;
+
+use Drupal\Component\Utility\Xss;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\views\Element\View;
+use Drupal\Core\Entity\EntityInterface;
+
+/**
+ * Provides a generic Views block.
+ *
+ * @Block(
+ *   id = "views_block",
+ *   admin_label = @Translation("Views Block"),
+ *   deriver = "Drupal\views\Plugin\Derivative\ViewsBlock"
+ * )
+ */
+class ViewsBlock extends ViewsBlockBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function build() {
+    $this->view->display_handler->preBlockBuild($this);
+
+    $args = [];
+    foreach ($this->view->display_handler->getHandlers('argument') as $argument_name => $argument) {
+      // Initialize the argument value. Work around a limitation in
+      // \Drupal\views\ViewExecutable::_buildArguments() that skips processing
+      // later arguments if an argument with default action "ignore" and no
+      // argument is provided.
+      $args[$argument_name] = $argument->options['default_action'] == 'ignore' ? 'all' : NULL;
+
+      if (!empty($this->context[$argument_name])) {
+        if ($value = $this->context[$argument_name]->getContextValue()) {
+
+          // Context values are often entities, but views arguments expect to
+          // receive just the entity ID, convert it.
+          if ($value instanceof EntityInterface) {
+            $value = $value->id();
+          }
+          $args[$argument_name] = $value;
+        }
+      }
+    }
+
+    // We ask ViewExecutable::buildRenderable() to avoid creating a render cache
+    // entry for the view output by passing FALSE, because we're going to cache
+    // the whole block instead.
+    if ($output = $this->view->buildRenderable($this->displayID, array_values($args), FALSE)) {
+      // Before returning the block output, convert it to a renderable array
+      // with contextual links.
+      $this->addContextualLinks($output);
+
+      // Block module expects to get a final render array, without another
+      // top-level #pre_render callback. So, here we make sure that Views'
+      // #pre_render callback has already been applied.
+      $output = View::preRenderViewElement($output);
+
+      // Override the label to the dynamic title configured in the view.
+      if (empty($this->configuration['views_label']) && $this->view->getTitle()) {
+        $output['#title'] = ['#markup' => $this->view->getTitle(), '#allowed_tags' => Xss::getHtmlTagList()];
+      }
+
+      // When view_build is empty, the actual render array output for this View
+      // is going to be empty. In that case, return just #cache, so that the
+      // render system knows the reasons (cache contexts & tags) why this Views
+      // block is empty, and can cache it accordingly.
+      if (empty($output['view_build'])) {
+        $output = ['#cache' => $output['#cache']];
+      }
+
+      return $output;
+    }
+
+    return [];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getConfiguration() {
+    $configuration = parent::getConfiguration();
+
+    // Set the label to the static title configured in the view.
+    if (!empty($configuration['views_label'])) {
+      $configuration['label'] = $configuration['views_label'];
+    }
+
+    return $configuration;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function defaultConfiguration() {
+    $settings = parent::defaultConfiguration();
+
+    if ($this->displaySet) {
+      $settings += $this->view->display_handler->blockSettings($settings);
+    }
+
+    // Set custom cache settings.
+    if (isset($this->pluginDefinition['cache'])) {
+      $settings['cache'] = $this->pluginDefinition['cache'];
+    }
+
+    return $settings;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function blockForm($form, FormStateInterface $form_state) {
+    if ($this->displaySet) {
+      return $this->view->display_handler->blockForm($this, $form, $form_state);
+    }
+
+    return [];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function blockValidate($form, FormStateInterface $form_state) {
+    if ($this->displaySet) {
+      $this->view->display_handler->blockValidate($this, $form, $form_state);
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function blockSubmit($form, FormStateInterface $form_state) {
+    parent::blockSubmit($form, $form_state);
+    if ($this->displaySet) {
+      $this->view->display_handler->blockSubmit($this, $form, $form_state);
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getMachineNameSuggestion() {
+    $this->view->setDisplay($this->displayID);
+    return 'views_block__' . $this->view->storage->id() . '_' . $this->view->current_display;
+  }
+
+}