/**
* {@inheritdoc}
*/
public function alter(&$types, &$context1 = NULL, &$context2 = NULL)
{
// Sort the types for easier debugging.
ksort($types, SORT_NATURAL);
$process_manager = new ProcessManager($this->theme);
$pre_render_manager = new PrerenderManager($this->theme);
foreach (array_keys($types) as $type) {
$element =& $types[$type];
// Ensure elements that have a base type with the #input set match.
if (isset($element['#base_type']) && isset($types[$element['#base_type']]) && isset($types[$element['#base_type']]['#input'])) {
$element['#input'] = $types[$element['#base_type']]['#input'];
}
// Core does not actually use the "description_display" property on the
// "details" or "fieldset" element types because the positioning of the
// description is never used in core templates. However, the form builder
// automatically applies the value of "after", thus making it impossible
// to detect a valid value later in the rendering process. It looks better
// for the "details" and "fieldset" element types to display as "before".
// @see \Drupal\Core\Form\FormBuilder::doBuildForm()
if ($type === 'details' || $type === 'fieldset') {
$element['#description_display'] = 'before';
$element['#panel_type'] = 'default';
}
// Add extra variables to all elements.
foreach (Bootstrap::extraVariables() as $key => $value) {
if (!isset($variables["#{$key}"])) {
$variables["#{$key}"] = $value;
}
}
// Only continue if the type isn't "form" (as it messes up AJAX).
if ($type !== 'form') {
$regex = "/^{$type}/";
// Add necessary #process callbacks.
$element['#process'][] = [get_class($process_manager), 'process'];
$definitions = $process_manager->getDefinitionsLike($regex);
foreach ($definitions as $definition) {
Bootstrap::addCallback($element['#process'], [$definition['class'], 'process'], $definition['replace'], $definition['action']);
}
// Add necessary #pre_render callbacks.
$element['#pre_render'][] = [get_class($pre_render_manager), 'preRender'];
foreach ($pre_render_manager->getDefinitionsLike($regex) as $definition) {
Bootstrap::addCallback($element['#pre_render'], [$definition['class'], 'preRender'], $definition['replace'], $definition['action']);
}
}
}
}
/**
* Preprocess theme hook variables.
*
* @param array $variables
* The variables array, passed by reference.
* @param string $hook
* The name of the theme hook.
* @param array $info
* The theme hook info.
*/
public static function preprocess(array &$variables, $hook, array $info)
{
static $theme;
if (!isset($theme)) {
$theme = self::getTheme();
}
static $preprocess_manager;
if (!isset($preprocess_manager)) {
$preprocess_manager = new PreprocessManager($theme);
}
// Ensure that any default theme hook variables exist. Due to how theme
// hook suggestion alters work, the variables provided are from the
// original theme hook, not the suggestion.
if (isset($info['variables'])) {
$variables = NestedArray::mergeDeepArray([$info['variables'], $variables], TRUE);
}
// Add extra variables to all theme hooks.
foreach (Bootstrap::extraVariables() as $key => $value) {
if (!isset($variables[$key])) {
$variables[$key] = $value;
}
}
// Add active theme context.
// @see https://www.drupal.org/node/2630870
if (!isset($variables['theme'])) {
$variables['theme'] = $theme->getInfo();
$variables['theme']['name'] = $theme->getName();
$variables['theme']['path'] = $theme->getPath();
$variables['theme']['title'] = $theme->getTitle();
$variables['theme']['settings'] = $theme->settings()->get();
$variables['theme']['has_glyphicons'] = $theme->hasGlyphicons();
$variables['theme']['query_string'] = \Drupal::getContainer()->get('state')->get('system.css_js_query_string') ?: '0';
}
// Invoke necessary preprocess plugin.
if (isset($info['bootstrap preprocess'])) {
if ($preprocess_manager->hasDefinition($info['bootstrap preprocess'])) {
$class = $preprocess_manager->createInstance($info['bootstrap preprocess'], ['theme' => $theme]);
/** @var \Drupal\bootstrap\Plugin\Preprocess\PreprocessInterface $class */
$class->preprocess($variables, $hook, $info);
}
}
}