social_sharing.module in Open Social 8.4

The Social Sharing module.

File

modules/social_features/social_sharing/social_sharing.module

<?php

/**
 * @file
 * The Social Sharing module.
 */
use Drupal\Core\Template\Attribute;
use Drupal\node\Entity\Node;
use Drupal\block\Entity\Block;
use Drupal\Core\Session\AccountInterface;
use Drupal\Core\Access\AccessResult;

/**
 * Implements hook_block_access().
 */
function social_sharing_block_access(Block $block, $operation, AccountInterface $account) {
  if ($operation == 'view' && $block
    ->getPluginId() == 'shariff_block') {

    // Exclude Social Sharing block form Add and Edit node pages.
    $route_name = \Drupal::routeMatch()
      ->getRouteName();
    $excluded_routes = [
      'node.add',
      'entity.node.edit_form',
    ];
    if (in_array($route_name, $excluded_routes)) {
      return AccessResult::forbidden();
    }
    else {

      // When a share block is assigned to a entity, and the entity field
      // settings are not Public. We prevent the block from being displayed.
      $nid = \Drupal::routeMatch()
        ->getRawParameter('node');

      // We have a node!
      if (!empty($nid) && ($node = Node::load($nid))) {
        $field_definitions = $node
          ->getFieldDefinitions();

        /* @var \Drupal\Core\Field\FieldConfigInterface $field_definition */
        foreach ($field_definitions as $field_name => $field_definition) {

          // Lets fetch all the entity access fields on this current node.
          if ($field_definition
            ->getType() === 'entity_access_field') {

            // Lets get all the values that we have for our
            // entity_access_fields.
            $field_values = $node
              ->get($field_name)
              ->getValue();
            foreach ($field_values as $field_value) {
              if (isset($field_value['value'])) {

                // If we have a value, and if it's not public. We better remove
                // our add to any block. We can't share any non public pages
                // anyway.
                return AccessResult::forbiddenIf($field_value['value'] != 'public')
                  ->addCacheableDependency($block);
              }
            }
          }
        }
      }
    }
  }

  // No opinion for other situations really.
  return AccessResult::neutral();
}

/**
 * Implements hook_preprocess().
 */
function social_sharing_preprocess_block_shariff(&$variables, $hook) {

  /** @var \Drupal\Core\Template\Attribute $data_attributes */
  $data_attributes = $variables['data_attributes'];

  // Make an array representation so we can add data attributes.
  $data = $data_attributes
    ->toArray();

  // Add buttons style.
  $data['data-button-style'] = 'info';

  // Put it back as attribute, so it can be rendered.
  $variables['data_attributes'] = new Attribute($data);
}

Functions

Name	Description
social_sharing_block_access	Implements hook_block_access().
social_sharing_preprocess_block_shariff	Implements hook_preprocess().