ViewsBlock.php

1. 8.x drupal/core/modules/views/lib/Drupal/views/Plugin/Derivative/ViewsBlock.php
2. 8.x drupal/core/modules/views/lib/Drupal/views/Plugin/Block/ViewsBlock.php

<?php

/**
 * @file
 * Contains \Drupal\views\Plugin\Derivative\ViewsBlock.
 */
namespace Drupal\views\Plugin\Derivative;

use Drupal\Component\Plugin\Derivative\DerivativeInterface;

/**
 * Provides block plugin definitions for all Views block displays.
 *
 * @see \Drupal\views\Plugin\block\block\ViewsBlock
 */
class ViewsBlock implements DerivativeInterface {

  /**
   * List of derivative definitions.
   *
   * @var array
   */
  protected $derivatives = array();

  /**
   * Implements \Drupal\Component\Plugin\Derivative\DerivativeInterface::getDerivativeDefinition().
   */
  public function getDerivativeDefinition($derivative_id, array $base_plugin_definition) {
    if (!empty($this->derivatives) && !empty($this->derivatives[$derivative_id])) {
      return $this->derivatives[$derivative_id];
    }
    $this
      ->getDerivativeDefinitions($base_plugin_definition);
    return $this->derivatives[$derivative_id];
  }

  /**
   * Implements \Drupal\Component\Plugin\Derivative\DerivativeInterface::getDerivativeDefinitions().
   */
  public function getDerivativeDefinitions(array $base_plugin_definition) {

    // Check all Views for block displays.
    foreach (views_get_all_views() as $view) {

      // Do not return results for disabled views.
      if (!$view
        ->status()) {
        continue;
      }
      $executable = $view
        ->get('executable');
      $executable
        ->initDisplay();
      foreach ($executable->displayHandlers as $display) {

        // Add a block plugin definition for each block display.
        if (isset($display) && !empty($display->definition['uses_hook_block'])) {
          $delta = $view
            ->id() . '-' . $display->display['id'];
          $desc = $display
            ->getOption('block_description');
          if (empty($desc)) {
            if ($display->display['display_title'] == $display->definition['title']) {
              $desc = t('View: !view', array(
                '!view' => $view
                  ->label(),
              ));
            }
            else {
              $desc = t('View: !view: !display', array(
                '!view' => $view
                  ->label(),
                '!display' => $display->display['display_title'],
              ));
            }
          }
          $this->derivatives[$delta] = array(
            'admin_label' => $desc,
            'cache' => $display
              ->getCacheType(),
          );
          $this->derivatives[$delta] += $base_plugin_definition;
        }
      }
    }
    return $this->derivatives;
  }

}