function mathjax_requirements in MathJax: LaTeX for Drupal 8.2

Same name and namespace in other branches

1. 6 mathjax.install \mathjax_requirements()
2. 7.2 mathjax.install \mathjax_requirements()
3. 7 mathjax.install \mathjax_requirements()
4. 3.0.x mathjax.install \mathjax_requirements()

Implements hook_requirements().

File

./mathjax.install, line 10

MathJax module install.

Code

function mathjax_requirements($phase) {
  $requirements = array();
  if ($phase == 'runtime') {
    $config = Drupal::config('mathjax.settings');
    if (!$config
      ->get('use_cdn')) {
      if (!_mathjax_library_present()) {
        $requirements['mathjax_local_libraries'] = array(
          'title' => t('MathJax'),
          'value' => t('Missing JavaScript libraries'),
          'description' => t("MathJax is configured to use local library files but they could not be found. See the README."),
          'severity' => REQUIREMENT_ERROR,
        );
      }
    }
  }
  return $requirements;
}