DefaultSummary.php

<?php

/**
 * @file
 * Definition of Drupal\views\Plugin\views\style\StyleSummaryPluginBase.
 */
namespace Drupal\views\Plugin\views\style;

use Drupal\views\Plugin\views\style\StylePluginBase;
use Drupal\Core\Annotation\Plugin;
use Drupal\Core\Annotation\Translation;

/**
 * The default style plugin for summaries.
 *
 * @ingroup views_style_plugins
 *
 * @Plugin(
 *   id = "default_summary",
 *   title = @Translation("List"),
 *   help = @Translation("Displays the default summary as a list."),
 *   theme = "views_view_summary",
 *   type = "summary"
 * )
 */
class DefaultSummary extends StylePluginBase {
  protected function defineOptions() {
    $options = parent::defineOptions();
    $options['base_path'] = array(
      'default' => '',
    );
    $options['count'] = array(
      'default' => TRUE,
      'bool' => TRUE,
    );
    $options['override'] = array(
      'default' => FALSE,
      'bool' => TRUE,
    );
    $options['items_per_page'] = array(
      'default' => 25,
    );
    return $options;
  }
  public function query() {
    if (!empty($this->options['override'])) {
      $this->view
        ->setItemsPerPage(intval($this->options['items_per_page']));
    }
  }
  public function buildOptionsForm(&$form, &$form_state) {
    $form['base_path'] = array(
      '#type' => 'textfield',
      '#title' => t('Base path'),
      '#default_value' => $this->options['base_path'],
      '#description' => t('Define the base path for links in this summary
        view, i.e. http://example.com/<strong>your_view_path/archive</strong>.
        Do not include beginning and ending forward slash. If this value
        is empty, views will use the first path found as the base path,
        in page displays, or / if no path could be found.'),
    );
    $form['count'] = array(
      '#type' => 'checkbox',
      '#default_value' => !empty($this->options['count']),
      '#title' => t('Display record count with link'),
    );
    $form['override'] = array(
      '#type' => 'checkbox',
      '#default_value' => !empty($this->options['override']),
      '#title' => t('Override number of items to display'),
    );
    $form['items_per_page'] = array(
      '#type' => 'textfield',
      '#title' => t('Items to display'),
      '#default_value' => $this->options['items_per_page'],
      '#states' => array(
        'visible' => array(
          ':input[name="options[summary][options][' . $this->definition['id'] . '][override]"]' => array(
            'checked' => TRUE,
          ),
        ),
      ),
    );
  }
  function render() {
    $rows = array();
    foreach ($this->view->result as $row) {

      // @todo: Include separator as an option.
      $rows[] = $row;
    }
    return array(
      '#theme' => $this
        ->themeFunctions(),
      '#view' => $this->view,
      '#options' => $this->options,
      '#rows' => $rows,
    );
  }

}