context_groups.module in Context groups 8

Hooks and helper functions.

File

context_groups.module

<?php

/**
 * @file
 * Hooks and helper functions.
 */
use Drupal\Component\Serialization\Json;
use Drupal\context\Entity\Context;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Url;

/**
 * Implements hook_help().
 */
function context_groups_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {

    // Main module help for the context_groups module.
    case 'help.page.context_groups':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('In reactions add an option to add groups within each region.') . '</p>';
      return $output;
    default:
  }
}

/**
 * Implements hook_form_FORM_ID_alter().
 */
function context_groups_form_context_edit_form_alter(&$form, FormStateInterface $form_state, $form_id) {

  // Add library to form.
  $form['#attached']['library'][] = 'context_groups/extra';

  // Alter the view of context reactions.
  $form['reactions']['#process'][] = 'context_groups_process_reactions';

  // Add submit callback.
  $submit_actions = $form['actions']['submit']['#submit'];
  $form['actions']['submit']['#submit'] = array_merge([
    'context_groups_form_context_edit_submit',
  ], $submit_actions);
}

/**
 * Alter the reactions in context_edit_form.
 */
function context_groups_process_reactions(&$form, FormStateInterface $form_state) {
  $context = $form_state
    ->getFormObject()
    ->getEntity();

  // Show button to add group only if any reaction is set.
  if (!$context
    ->getReactions()
    ->has('blocks')) {
    return $form;
  }

  // Get all regions from selected theme.
  $theme = \Drupal::service('context_groups.manager')
    ->getCurrentTheme($form_state);

  // If user has permission, show him add group button.
  if (Drupal::currentUser()
    ->hasPermission('create context groups')) {
    $form['reaction-blocks']['options']['blocks']['group_add'] = [
      '#type' => 'link',
      '#title' => t('Add group'),
      '#attributes' => [
        'class' => [
          'use-ajax',
          'button',
          'button--small',
          'button-action',
        ],
        'data-dialog-type' => 'modal',
        'data-dialog-options' => Json::encode([
          'width' => 500,
        ]),
      ],
      '#url' => Url::fromRoute('context_groups.group_add', [
        'context' => $context
          ->getOriginalId(),
        'theme' => $theme,
      ]),
      '#weight' => -1,
    ];
  }

  // Set weight to Place block button to be the first link.
  $form['reaction-blocks']['options']['blocks']['block_add']['#weight'] = -2;
  $form_state
    ->loadInclude('context_groups', 'inc', 'includes/context_groups_ui');
  context_groups_reaction_ui_display_form_alter($form, $form_state);
  return $form;
}

/**
 * Submit callback on context edit form save.
 *
 * @param array $form
 *   Form array.
 * @param FormStateInterface $form_state
 *   FormStateObject.
 */
function context_groups_form_context_edit_submit(array &$form, FormStateInterface $form_state) {

  // Get list of blocks and context groups.
  $form_values =& $form_state
    ->getValue([
    'reactions',
    'blocks',
    'blocks',
    'blocks',
  ]);

  // Get context groups from this context reaction.
  $complete_form = $form_state
    ->getCompleteForm();

  // If there is no context groups inside context, do nothing.
  if (!isset($complete_form['reactions']['#context_groups'])) {
    return;
  }
  $context_groups = $complete_form['reactions']['#context_groups'];

  // Remove context groups from list of block in context reaction.
  $context_groups_values = [];
  foreach ($context_groups as $group_name) {
    if (isset($form_values[$group_name])) {
      $context_groups_values[$group_name] = $form_values[$group_name];
      unset($form_values[$group_name]);
    }
  }

  // Load context.
  $context = $form_state
    ->getFormObject()
    ->getEntity();

  // Get save context groups.
  $saved_context_groups = $context
    ->getThirdPartySettings('context_groups');

  // Get all context groups parents of a block.
  foreach ($form_values as $key => $block) {
    $form_values[$key]['all_parents'] = \Drupal::service('context_groups.manager')
      ->getAllParentsForGroup($saved_context_groups, $block['parent_wrapper']['parent']);
  }

  // Update context groups in context.
  foreach ($context_groups_values as $name => $value) {
    $group = $saved_context_groups[$name];
    $group['region'] = $value['region'];
    $group['weight'] = $value['weight'];
    $group['parent'] = $value['parent_wrapper']['parent'];
    $group['all_parents'] = \Drupal::service('context_groups.manager')
      ->getAllParentsForGroup($saved_context_groups, $value['parent_wrapper']['parent']);
    $context
      ->setThirdPartySetting('context_groups', $name, $group);
  }
  $context
    ->save();
}

/**
 * Implements hook_form_FORM_ID_alter().
 */
function context_groups_form_context_reaction_delete_confirm_alter(&$form, FormStateInterface $form_state, $form_id) {

  // Add context_id to form_state.
  $context = $form_state
    ->getBuildInfo();
  $context_id = $context['args'][0]
    ->id();
  $form_state
    ->set('context_id', $context_id);
  $form['#submit'][] = 'context_groups_reaction_delete_submit';
}

/**
 * Submit callback on reaction delete.
 */
function context_groups_reaction_delete_submit(&$form, FormStateInterface $form_state) {
  $context_id = $form_state
    ->get('context_id');
  $context = Context::load($context_id);
  $saved_context_groups = $context
    ->getThirdPartySettings('context_groups');

  // Remove groups from reaction that is deleted.
  foreach ($saved_context_groups as $context_group => $value) {
    $context
      ->unsetThirdPartySetting('context_groups', $context_group);
  }
  $context
    ->save();
}

/**
 * Implements hook_theme().
 */
function context_groups_theme($existing, $type, $theme, $path) {
  return [
    'context_groups' => [
      'render element' => 'element',
    ],
  ];
}

/**
 * Implements hook_theme_suggestions_HOOK().
 */
function context_groups_theme_suggestions_context_groups(array $variables) {
  $suggestions[] = 'context_groups__' . $variables['element']['#context_id'];
  $suggestions[] = 'context_groups__' . $variables['element']['#context_group'];
  $suggestions[] = 'context_groups__' . $variables['element']['#context_id'] . '__' . $variables['element']['#context_group'];
  return $suggestions;
}

Functions

Name	Description
context_groups_form_context_edit_form_alter	Implements hook_form_FORM_ID_alter().
context_groups_form_context_edit_submit	Submit callback on context edit form save.
context_groups_form_context_reaction_delete_confirm_alter	Implements hook_form_FORM_ID_alter().
context_groups_help	Implements hook_help().
context_groups_process_reactions	Alter the reactions in context_edit_form.
context_groups_reaction_delete_submit	Submit callback on reaction delete.
context_groups_theme	Implements hook_theme().
context_groups_theme_suggestions_context_groups	Implements hook_theme_suggestions_HOOK().