icon_select.module in Icon Select 8

Basic module file for icon_select module.

File

icon_select.module

<?php

/**
 * @file
 * Basic module file for icon_select module.
 */
use Drupal\Core\Form\FormStateInterface;
use Drupal\icon_select\Helper\SvgSpriteGenerator;
use Drupal\taxonomy\Entity\Term;

/**
 * Implements hook_theme().
 */
function icon_select_theme() {
  return [
    'icon_select_svg_icon' => [
      'variables' => [
        'attributes' => NULL,
        'symbol_id' => NULL,
      ],
    ],
  ];
}

/**
 * Implements theme_preprocess_icon_select_svg_icon.
 */
function icon_select_preprocess_icon_select_svg_icon(&$variables) {
  $variables['#attached']['library'][] = 'icon_select/drupal.icon_select_frontend';
  if (!\Drupal::currentUser()
    ->isAnonymous()) {
    $variables['#attached']['library'][] = 'icon_select/drupal.icon_select_backend';
  }
}

/**
 * Implements hook_preprocess_page().
 */
function icon_select_preprocess_page(&$vars) {
  $svg_path = SvgSpriteGenerator::getSpriteDestinationPath();
  if (file_exists($svg_path)) {

    // Add a random string to disable caching of AJAX request.
    $full_url = file_url_transform_relative(file_create_url(SvgSpriteGenerator::getSpriteDestinationPath()));
    $url = $full_url . '?hash=' . \Drupal::state()
      ->get('icon_select_hash');
    $vars['#attached']['drupalSettings']['icon_select']['icon_select_url'] = $url;
  }
}

/**
 * Implements hook_field_widget_form_alter().
 */
function icon_select_field_widget_form_alter(&$element, FormStateInterface $form_state, $context) {
  if (get_class($context['widget']) === 'Drupal\\icon_select\\Plugin\\Field\\FieldWidget\\IconSelectFieldWidgetDefault') {
    $element['target_id']['#process'][] = [
      'Drupal\\icon_select\\Plugin\\Field\\FieldWidget\\IconSelectFieldWidgetDefault',
      'processCheckboxes',
    ];
  }
}

/**
 * Implements hook_form_FORM_ID_alter().
 */
function icon_select_form_taxonomy_vocabulary_form_alter(&$form, FormStateInterface $form_state, $form_id) {
  $vid = 'icons';
  $vocabulary = $form_state
    ->getFormObject()
    ->getEntity();
  $config = \Drupal::config('icon_select.settings');
  if ($vid == $vocabulary
    ->id()) {
    $form['path'] = [
      '#type' => 'textfield',
      '#title' => t('Path of SVG sprite file'),
      '#default_value' => !empty($config
        ->get('path')) ? $config
        ->get('path') : 'icons/icon_select_map.svg',
      '#description' => t('Relative to the files folder'),
      '#weight' => 0,
    ];

    // Do not allow to delete forum's vocabulary.
    $form['actions']['delete']['#access'] = FALSE;

    // Do not allow to change a vid of forum's vocabulary.
    $form['vid']['#disabled'] = TRUE;
    $form['actions']['submit']['#submit'][] = 'icon_select_vocabulary_form_submit';
  }
}

/**
 * Custom submit handler for updating / saving icon vocabulary.
 */
function icon_select_vocabulary_form_submit(&$form, FormStateInterface $form_state) {
  $config = \Drupal::service('config.factory')
    ->getEditable('icon_select.settings');
  $path = $form_state
    ->getValue('path');

  // Set and save new path value.
  $config
    ->set('path', $path)
    ->save();

  // Update sprites.
  SvgSpriteGenerator::generateSprites('icons');
}

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

  // Custom validation.
  $form['#validate'][] = 'icon_select_taxonomy_form_validate';
}

/**
 * Form validation for taxonomy term save.
 */
function icon_select_taxonomy_form_validate(&$form, FormStateInterface $form_state) {
  $vocabulary_id = $form_state
    ->getFormObject()
    ->getEntity()
    ->get('vid')->target_id;

  /** @var \Drupal\taxonomy\TermStorageInterface $term_storage */
  $term_storage = \Drupal::entityTypeManager()
    ->getStorage('taxonomy_term');
  $terms = $term_storage
    ->loadTree($vocabulary_id, 0, NULL, TRUE);
  $symbol_id = $form_state
    ->getValue('field_symbol_id')[0]['value'];

  // Check for unique class name.
  foreach ($terms as $term) {
    if ($term->field_symbol_id->value == $symbol_id) {

      // Skip current term.
      if (!empty($form_state
        ->getFormObject()
        ->getEntity())) {
        if ($term
          ->id() == $form_state
          ->getFormObject()
          ->getEntity()
          ->id()) {
          continue;
        }
      }
      $form_state
        ->setErrorByName('field_symbol_id', t('Symbol ID must be unique'));
      break;
    }
  }
}

/**
 * Implements hook_ENTITY_TYPE_postsave().
 */
function icon_select_taxonomy_term_postsave(Term $term) {
  if ($term
    ->bundle() == 'icons') {

    // Generate Sprites.
    SvgSpriteGenerator::generateSprites('icons');
  }
}

/**
 * Implements hook_ENTITY_TYPE_postdelete().
 */
function icon_select_taxonomy_term_postdelete(Term $term) {
  icon_select_taxonomy_term_postsave($term);
}

Functions

Name	Description
icon_select_field_widget_form_alter	Implements hook_field_widget_form_alter().
icon_select_form_taxonomy_term_icons_form_alter	Implements hook_form_FORM_ID_alter().
icon_select_form_taxonomy_vocabulary_form_alter	Implements hook_form_FORM_ID_alter().
icon_select_preprocess_icon_select_svg_icon	Implements theme_preprocess_icon_select_svg_icon.
icon_select_preprocess_page	Implements hook_preprocess_page().
icon_select_taxonomy_form_validate	Form validation for taxonomy term save.
icon_select_taxonomy_term_postdelete	Implements hook_ENTITY_TYPE_postdelete().
icon_select_taxonomy_term_postsave	Implements hook_ENTITY_TYPE_postsave().
icon_select_theme	Implements hook_theme().
icon_select_vocabulary_form_submit	Custom submit handler for updating / saving icon vocabulary.