views_block_overrides.module

<?php

use Drupal\Core\Form\FormStateInterface;
use Drupal\views\Plugin\Block\ViewsBlock;
use Drupal\views\Plugin\views\display\Block as CoreBlock;
use Drupal\ctools_views\Plugin\Display\Block as CtoolsBlock;
use Drupal\views_block_overrides\Plugin\views\display\CtoolsBlockOverrides;
use Drupal\views_block_overrides\Plugin\Block\ViewsBlockOverride;

/**
 *  Implements hook_field_widget_FIELD-ID_FORM_alter().
 *
 * TODO add settings form to alter only specific blocks.
 */
function views_block_overrides_field_widget_block_field_default_form_alter(&$element, FormStateInterface $form_state, $context) {
  if (isset($element['settings']['context_mapping'])) {
    foreach($element['settings']['context_mapping'] as $context_element_id => &$context_element) {
      if ($context_element['#type'] == 'select' && empty($context_element['#options'])) {
        // Don't display the context mapping element if it's empty.
        $context_element['#access'] = FALSE;
      }
    }
    $hiden_elements = [
      'views_label_checkbox',
      'views_label_fieldset',
      'views_label',
      'label',
      'label_display',
    ];
    foreach ($hiden_elements as $name) {
      if (isset($element['settings'][$name])) {
        //  $element['settings'][$name]['#access'] = FALSE;
      }
    }
  }
}

/**
 * Implements hook_views_plugins_display_alter().
 */
function views_block_overrides_views_plugins_display_alter(&$displays) {
  //  if (!empty($displays['block']['class']) && $displays['block']['class'] == CtoolsBlock::class) {
  //    $displays['block']['class'] = CtoolsBlockOverrides::class;
  //  }
}

/**
 * Implements hook_block_alter().
 */
function views_block_overrides_block_alter(&$definitions) {
  foreach ($definitions as &$definition) {
    if (!empty($definition['class']) && $definition['class'] == ViewsBlock::class) {
      // Alter all the views blocks to use the extended ViewsBlockOverride block
      // type. This new class extends the basic ViewsBlock but injects the block
      // instance in the view object.
      // See class Drupal\views_block_overrides\Plugin\Block\ViewsBlockOverride
      $definition['class'] = ViewsBlockOverride::class;
      $definition['provider'] = 'views_block_overrides';
    }
  }
}

/**
 * Implements hook_preprocess_HOOK() for views template.
 */
function views_block_overrides_preprocess(&$variables) {
  if (isset($variables['view']->views_block_overrides['block_instance'])) {
    $configuration = $variables['view']->views_block_overrides['block_instance']->getConfiguration();
    $variables['views_block_overrides']['configuration'] = $configuration;
  }
}

/**
 * Implements hook_views_data_alter().
 */
function views_block_overrides_views_data_alter(array &$data) {
  /** @var Drupal\views_block_overrides\Plugin\BlockSettingsPluginManager $block_settings_manager */
  $block_settings_manager = \Drupal::service('plugin.manager.block_settings');
  /** @var  Drupal\views_block_overrides\Plugin\BlockSettingsPluginInterface $definition */
  foreach ($block_settings_manager->getDefinitions() as $definition_id => $definition) {
    if (!isset($definition['area']) || $definition['area'] != TRUE) {
      continue;
    }
    $key = 'views_block_overrides_' . $definition_id;
    $data['views'][$key] = [
      'title' => t('Views block overrides - @plugin_title', ['@plugin_title' => $definition['title']]),
      'help' => t('Views block override block settings area.'),
      'area' => [
        'id' => 'views_block_overrides_area',
        'block_settings_plugin_id' => $definition_id,
      ],
    ];
  }
}

/**
 * Implements hook_theme().
 */
function views_block_overrides_theme() {
  return [
    'views_block_overrides_area' => [
      'variables' => [
        'settings' => [],
        'context' => []
      ],
    ],
  ];
}

/**
 * Implements HOOK_theme_suggestions_HOOK_alter().
 */
function views_block_overrides_theme_suggestions_views_block_overrides_area_alter(array &$suggestions, array $variables, $hook) {
  $block_settings_plugin_id = $variables['context']['block_settings_plugin']->getPluginId();
  $view = $variables['context']['view'];
  $current_display = $view->current_display;
  $area_id = $variables['context']['area']->options['id'];

  $new_suggestions = [
    [$hook, $block_settings_plugin_id],
    [$hook, $view->id()],
    [$hook, $current_display],
    [$hook, $area_id],
  ];

  foreach ($new_suggestions as $suggestion) {
    $suggestions[] = implode('__', $suggestion);
  }
}