Prepares variables for color scheme form templates.
Default template: color-scheme-form.html.twig.
array $variables: An associative array containing:
function template_preprocess_color_scheme_form(&$variables) {
$form = $variables['form'];
$theme = $form['theme']['#value'];
$info = $form['info']['#value'];
$path = drupal_get_path('theme', $theme) . '/';
drupal_add_css($path . $info['preview_css']);
// @todo Transform to add library.
$preview_js_path = isset($info['preview_js']) ? $path . $info['preview_js'] : drupal_get_path('module', 'color') . '/' . 'preview.js';
// Add the JS at a weight below color.js.
drupal_add_js($preview_js_path, array(
'weight' => -1,
));
// Attempt to load preview HTML if the theme provides it.
$preview_html_path = DRUPAL_ROOT . '/' . (isset($info['preview_html']) ? drupal_get_path('theme', $theme) . '/' . $info['preview_html'] : drupal_get_path('module', 'color') . '/preview.html');
$variables['html_preview'] = file_get_contents($preview_html_path);
}