HistoryUserTimestamp.php

1. 8.x drupal/core/modules/history/lib/Drupal/history/Plugin/views/field/HistoryUserTimestamp.php
2. 8.x drupal/core/modules/history/lib/Drupal/history/Plugin/views/filter/HistoryUserTimestamp.php

<?php

/**
 * @file
 * Contains \Drupal\history\Plugin\views\field\HistoryUserTimestamp.
 */
namespace Drupal\history\Plugin\views\field;

use Drupal\views\ViewExecutable;
use Drupal\views\Plugin\views\display\DisplayPluginBase;
use Drupal\node\Plugin\views\field\Node;
use Drupal\Component\Annotation\PluginID;

/**
 * Field handler to display the marker for new content.
 *
 * The handler is named history_user, because of compatibility reasons, the
 * table is history.
 *
 * @ingroup views_field_handlers
 *
 * @PluginID("history_user_timestamp")
 */
class HistoryUserTimestamp extends Node {

  /**
   * Overrides \Drupal\node\Plugin\views\field\Node::init().
   */
  public function init(ViewExecutable $view, DisplayPluginBase $display, array &$options = NULL) {
    parent::init($view, $display, $options);
    global $user;
    if ($user->uid) {
      $this->additional_fields['created'] = array(
        'table' => 'node_field_data',
        'field' => 'created',
      );
      $this->additional_fields['changed'] = array(
        'table' => 'node_field_data',
        'field' => 'changed',
      );
      if (module_exists('comment') && !empty($this->options['comments'])) {
        $this->additional_fields['last_comment'] = array(
          'table' => 'node_comment_statistics',
          'field' => 'last_comment_timestamp',
        );
      }
    }
  }
  protected function defineOptions() {
    $options = parent::defineOptions();
    $options['comments'] = array(
      'default' => FALSE,
      'bool' => TRUE,
    );
    return $options;
  }
  public function buildOptionsForm(&$form, &$form_state) {
    parent::buildOptionsForm($form, $form_state);
    if (module_exists('comment')) {
      $form['comments'] = array(
        '#type' => 'checkbox',
        '#title' => t('Check for new comments as well'),
        '#default_value' => !empty($this->options['comments']),
        '#fieldset' => 'more',
      );
    }
  }
  public function query() {

    // Only add ourselves to the query if logged in.
    global $user;
    if (!$user->uid) {
      return;
    }
    parent::query();
  }
  function render($values) {

    // Let's default to 'read' state.
    // This code shadows node_mark, but it reads from the db directly and
    // we already have that info.
    $mark = MARK_READ;
    global $user;
    if ($user->uid) {
      $last_read = $this
        ->getValue($values);
      $changed = $this
        ->getValue($values, 'changed');
      $last_comment = module_exists('comment') && !empty($this->options['comments']) ? $this
        ->getValue($values, 'last_comment') : 0;
      if (!$last_read && $changed > HISTORY_READ_LIMIT) {
        $mark = MARK_NEW;
      }
      elseif ($changed > $last_read && $changed > HISTORY_READ_LIMIT) {
        $mark = MARK_UPDATED;
      }
      elseif ($last_comment > $last_read && $last_comment > HISTORY_READ_LIMIT) {
        $mark = MARK_UPDATED;
      }
      return $this
        ->render_link(theme('mark', array(
        'mark_type' => $mark,
      )), $values);
    }
  }

}