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+<?php
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+
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+namespace Drupal\materio_simplenews\Plugin\Block;
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+
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+use Drupal\Core\Access\AccessResult;
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+use Drupal\Core\Block\BlockBase;
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+use Drupal\Core\Entity\EntityTypeManagerInterface;
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+use Drupal\Core\Form\FormBuilderInterface;
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+use Drupal\Core\Form\FormStateInterface;
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+use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
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+use Drupal\Core\Session\AccountInterface;
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+use Drupal\simplenews\Entity\Subscriber;
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+use Symfony\Component\DependencyInjection\ContainerInterface;
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+
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+/**
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+ * Provides an 'Simplenews subscription' block with all available newsletters and an email field.
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+ *
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+ * @Block(
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+ * id = "materio_simplenews_subscription_block",
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+ * admin_label = @Translation("Materio Simplenews subscription"),
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+ * category = @Translation("Simplenews")
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+ * )
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+ */
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+class MaterioSimplenewsSubscriptionBlock extends BlockBase implements ContainerFactoryPluginInterface {
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+
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+ /**
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+ * The entity type manager.
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+ *
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+ * @var \Drupal\Core\Entity\EntityTypeManagerInterface
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+ */
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+ protected $entityTypeManager;
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+
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+ /**
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+ * The form builder.
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+ *
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+ * @var \Drupal\Core\Form\FormBuilderInterface
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+ */
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+ protected $formBuilder;
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+
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+ /**
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+ * Constructs an SimplenewsSubscriptionBlock object.
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+ *
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+ * @param array $configuration
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+ * A configuration array containing information about the plugin instance.
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+ * @param string $plugin_id
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+ * The plugin_id for the plugin instance.
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+ * @param mixed $plugin_definition
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+ * The plugin implementation definition.
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+ * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
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+ * The entity type manager.
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+ * @param \Drupal\Core\Form\FormBuilderInterface $formBuilder
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+ * The form builder object.
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+ */
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+ public function __construct(array $configuration, $plugin_id, $plugin_definition, EntityTypeManagerInterface $entity_type_manager, FormBuilderInterface $formBuilder) {
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+ parent::__construct($configuration, $plugin_id, $plugin_definition);
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+ $this->entityTypeManager = $entity_type_manager;
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+ $this->formBuilder = $formBuilder;
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+ }
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+
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+
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+ /**
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+ * {@inheritdoc}
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+ */
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+ public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
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+ return new static(
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+ $configuration,
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+ $plugin_id,
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+ $plugin_definition,
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+ $container->get('entity_type.manager'),
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+ $container->get('form_builder')
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+ );
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+ }
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+
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+
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+ /**
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+ * {@inheritdoc}
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+ */
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+ public function defaultConfiguration() {
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+ // By default, the block will contain 1 newsletter.
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+ return array(
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+ 'newsletters' => array(),
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+ 'message' => t('Stay informed - subscribe to our newsletter.'),
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+ 'unique_id' => '',
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+ );
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+ }
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+
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+ /**
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+ * {@inheritdoc}
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+ */
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+ protected function blockAccess(AccountInterface $account) {
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+ // Only grant access to users with the 'subscribe to newsletters' permission.
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+ return AccessResult::allowedIfHasPermission($account, 'subscribe to newsletters');
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+ }
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+
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+ /**
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+ * {@inheritdoc}
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+ */
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+ public function blockForm($form, FormStateInterface $form_state) {
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+ $newsletters = simplenews_newsletter_get_visible();
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+ foreach ($newsletters as $newsletter) {
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+ $options[$newsletter->id()] = $newsletter->name;
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+ }
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+
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+ $form['newsletters'] = array(
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+ '#type' => 'checkboxes',
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+ '#title' => t('Newsletters'),
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+ '#options' => $options,
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+ '#required' => TRUE,
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+ '#default_value' => $this->configuration['newsletters'],
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+ );
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+ $form['message'] = array(
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+ '#type' => 'textfield',
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+ '#title' => t('Block message'),
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+ '#size' => 60,
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+ '#maxlength' => 255,
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+ '#default_value' => $this->configuration['message'],
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+ );
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+ $form['unique_id'] = array(
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+ '#type' => 'textfield',
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+ '#title' => t('Unique ID'),
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+ '#size' => 60,
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+ '#maxlength' => 255,
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+ '#description' => t('Each subscription block must have a unique form ID. If no value is provided, a random ID will be generated. Use this to have a predictable, short ID, e.g. to configure this form use a CAPTCHA.'),
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+ '#default_value' => $this->configuration['unique_id'],
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+ );
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+ /*if (\Drupal::moduleHandler()->moduleExists('views')) {
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+ $form['link_previous'] = array(
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+ '#type' => 'checkbox',
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+ '#title' => t('Display link to previous issues'),
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+ '#return_value' => 1,
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+ '#default_value' => variable_get('simplenews_block_l_' . $delta, 1),
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+ '#description' => t('Link points to newsletter/newsletter_id, which is provided by the newsletter issue list default view.'),
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+ );
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+ }*/
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+ /*if (\Drupal::moduleHandler()->moduleExists('views')) {
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+ $form['rss_feed'] = array(
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+ '#type' => 'checkbox',
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+ '#title' => t('Display RSS-feed icon'),
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+ '#return_value' => 1,
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+ '#default_value' => variable_get('simplenews_block_r_' . $delta, 1),
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+ '#description' => t('Link points to newsletter/feed/newsletter_id, which is provided by the newsletter issue list default view.'),
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+ );
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+ }*/
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+ return $form;
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+ }
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+
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+ /**
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+ * {@inheritdoc}
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+ */
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+ public function blockSubmit($form, FormStateInterface $form_state) {
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+ $this->configuration['newsletters'] = array_filter($form_state->getValue('newsletters'));
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+ $this->configuration['message'] = $form_state->getValue('message');
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+ //$this->configuration['link_previous'] = $form_state->getValue('link_previous');
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+ //$this->configuration['rss_feed'] = $form_state->getValue('rss_feed');
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+ $this->configuration['unique_id'] = empty($form_state->getValue('unique_id')) ? \Drupal::service('uuid')->generate() : $form_state->getValue('unique_id');
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+}
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+
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+ /**
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+ * {@inheritdoc}
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+ */
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+ public function build() {
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+ /** @var \Drupal\materio_simplenews\Form\MaterioSubscriptionsBlockForm $form_object */
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+ $form_object = $this->entityTypeManager->getFormObject('simplenews_subscriber', 'materio_block');
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+ $form_object->setUniqueId($this->configuration['unique_id']);
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+ $form_object->setNewsletterIds($this->configuration['newsletters']);
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+ $form_object->message = $this->configuration['message'];
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+
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+ // Set the entity on the form.
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+ if ($user = \Drupal::currentUser()) {
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+ if ($subscriber = simplenews_subscriber_load_by_uid($user->id())) {
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+ $form_object->setEntity($subscriber);
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+ }
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+ else {
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+ $form_object->setEntity(Subscriber::create()->fillFromAccount($user));
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+ }
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+ }
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+ else {
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+ $form_object->setEntity(Subscriber::create());
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+ }
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+
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+ return $this->formBuilder->getForm($form_object);
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+ }
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+
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+}
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