beautytips-8.x-1.x-dev/beautytips.install

<?php

/**
 * @file
 * BeautyTips install/uninstall hooks.
 */

use Drupal\Core\Cache\Cache;
use Drupal\Core\Url;
use Drupal\Core\Link;

/**
 * Implements hook_install().
 */
function beautytips_install() {
  // Display IE warning.
  $path = drupal_get_path('module', 'beautytips');
  $url = Url::fromUserInput('/' . $path . '/README.txt');
  $link_readme = Link::fromTextAndUrl(t('BeautyTips Readme.txt'), $url)->toString();
  if (!file_exists($path . '/other_libs/excanvas_r3/excanvas.compiled.js')) {
    \Drupal::messenger()->addMessage(t('WARNING! In order for BeautyTips to function correctly in Internet Explorer, the Excanvas library needs to be added. (See the @readme_file for more information.)', ['@readme_file' => $link_readme]), 'warning');
  }
}

/**
 * Implements hook_uninstall().
 */
function beautytips_uninstall() {
  \Drupal::configFactory()->getEditable('beautytips.basic')->delete();
  Cache::invalidateTags(['beautytips']);
}