whitelabel-8.x-2.x-dev/whitelabel.module

<?php

/**
 * @file
 * Provides hooks and helper functions for the white label functionality.
 */

use Drupal\Core\Block\BlockPluginInterface;
use Drupal\Core\Extension\ModuleExtensionList;
use Drupal\Core\Form\FormStateInterface;
use Drupal\whitelabel\WhiteLabelBlockAlter;
use Drupal\whitelabel\WhiteLabelSystemBrandingBlockAlter;

/**
 * Implements hook_altcolor_alter_colors().
 */
function whitelabel_altcolor_alter_colors($theme, &$colors, $cacheableMetadata) {
  if ($whitelabel = \Drupal::service('whitelabel.whitelabel_provider')->getWhiteLabel()) {
    // Merge the white label colors in the color array.
    $colors = array_merge($colors, $whitelabel->getPalette());
    // Add the white label as a cache dependency.
    $cacheableMetadata->addCacheableDependency($whitelabel);
  }
}

/**
 * Implements hook_block_view_alter().
 *
 * @see whitelabel_block_view_pre_render()
 */
function whitelabel_block_view_alter(array &$build, BlockPluginInterface $block) {
  $build['#pre_render'][] = [WhiteLabelBlockAlter::class, 'preRender'];
}

/**
 * Implements hook_block_view_BASE_BLOCK_ID_alter().
 */
function whitelabel_block_view_system_branding_block_alter(array &$build, BlockPluginInterface $block) {
  $build['#pre_render'][] = [WhiteLabelSystemBrandingBlockAlter::class, 'preRender'];
}

/**
 * Implements hook_form_FORM_ID_alter() for the entity_form_display_edit_form.
 *
 * Ensure that white label is the only widget for entity reference revision
 * fields referencing a white label entity.
 */
function whitelabel_form_entity_form_display_edit_form_alter(&$form, FormStateInterface $form_state, $form_id) {
  $field_definitions = \Drupal::service('entity_field.manager')->getFieldDefinitions($form['#entity_type'], $form['#bundle']);
  // Loop over ERR field's display options with whitelabel target type.
  foreach (array_keys($field_definitions) as $field_name) {
    if ($field_definitions[$field_name]->getType() == 'entity_reference_revisions') {
      if ($field_definitions[$field_name]->getSettings()['target_type'] == 'whitelabel') {
        // Ensure that only the white label widget is used for WL fields.
        $form['fields'][$field_name]['plugin']['type']['#options'] = [
          'entity_reference_whitelabel' => $form['fields'][$field_name]['plugin']['type']['#options']['entity_reference_whitelabel'],
        ];
      }
    }
  }
}

/**
 * Implements hook_form_FORM_ID_alter() for the field_storage_config_edit_form.
 *
 * Ensures that white label entities can no longer be selected in a 'normal'
 * entity reference field.
 */
function whitelabel_form_field_storage_config_edit_form_alter(&$form, FormStateInterface $form_state, $form_id) {
  if ($form_state->getFormObject()->getEntity()->getType() == 'entity_reference') {
    unset($form['settings']['target_type']['#options'][(string) t('Content')]['whitelabel']);
  }
}

/**
 * Helper function for fetching enabled themes.
 *
 * @return array
 *   Array of themes, keyed by system name.
 */
function whitelabel_load_available_themes() {
  $theme_options = [];

  $themes = \Drupal::service('theme_handler')->listInfo();
  uasort($themes, [ModuleExtensionList::class, 'sortByName']);
  foreach ($themes as &$theme) {
    if (!empty($theme->info['hidden'])) {
      continue;
    }
    $theme_options[$theme->getName()] = $theme->info['name'];
  }

  return $theme_options;
}

/**
 * Implements hook_entity_extra_field_info().
 */
function whitelabel_entity_extra_field_info() {
  $extra = [];
  if (\Drupal::moduleHandler()->moduleExists('altcolor')) {
    $extra['whitelabel']['whitelabel']['form']['altcolor'] = [
      'label' => t('Color schemes'),
      'description' => 'Provides a color scheme configuration form for themes which support it.',
      'weight' => 50,
      'visible' => TRUE,
    ];
  }

  return $extra;
}