Theme.php in Context 8

Namespace

Drupal\context\Plugin\ContextReaction

File

src/Plugin/ContextReaction/Theme.php

<?php

namespace Drupal\context\Plugin\ContextReaction;

use Drupal\context\ContextReactionPluginBase;
use Drupal\Core\Extension\ThemeHandlerInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
use Drupal\Core\Theme\ThemeManagerInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Provides a content reaction that will let you change theme.
 *
 * @ContextReaction(
 *   id = "theme",
 *   label = @Translation("Theme")
 * )
 */
class Theme extends ContextReactionPluginBase implements ContainerFactoryPluginInterface {

  /**
   * @var \Drupal\Core\Theme\ThemeManagerInterface
   */
  protected $themeManager;

  /**
   * @var \Drupal\Core\Extension\ThemeHandlerInterface
   */
  protected $themeHandler;

  /**
   * {@inheritdoc}
   */
  function __construct(array $configuration, $pluginId, $pluginDefinition, ThemeManagerInterface $themeManager, ThemeHandlerInterface $themeHandler) {
    parent::__construct($configuration, $pluginId, $pluginDefinition);
    $this->themeManager = $themeManager;
    $this->themeHandler = $themeHandler;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container, array $configuration, $pluginId, $pluginDefinition) {
    return new static($configuration, $pluginId, $pluginDefinition, $container
      ->get('theme.manager'), $container
      ->get('theme_handler'));
  }

  /**
   * {@inheritdoc}
   */
  public function summary() {
    return $this
      ->t('Gives you ability to change theme.');
  }

  /**
   * Executes the plugin.
   */
  public function execute() {

    // TODO: Implement execute() method.
  }

  /**
   * {@inheritdoc}
   */
  public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
    $themes = $this->themeHandler
      ->listInfo();
    $default_theme = $this->themeHandler
      ->getDefault();
    $theme_options = [];
    foreach ($themes as $theme_id => $theme) {
      $theme_options[$theme_id] = $theme->info['name'];
    }
    $configuration = $this
      ->getConfiguration();
    $form['theme'] = [
      '#type' => 'radios',
      '#options' => $theme_options,
      '#title' => $this
        ->t('Select theme'),
      '#default_value' => isset($configuration['theme']) ? $configuration['theme'] : $default_theme,
    ];
    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function submitConfigurationForm(array &$form, FormStateInterface $form_state) {
    $configuration['theme'] = $form_state
      ->getValue('theme');
    $configuration += $this
      ->getConfiguration();
    $this
      ->setConfiguration($configuration);
  }

}

Classes

Name	Description
Theme	Provides a content reaction that will let you change theme.