ContextualLinks.php in Drupal 9
Same filename in this branch
Same filename and directory in other branches
Namespace
Drupal\contextual\ElementFile
core/modules/contextual/src/Element/ContextualLinks.phpView source
<?php
namespace Drupal\contextual\Element;
use Drupal\Component\Utility\Html;
use Drupal\Core\Render\Element\RenderElement;
use Drupal\Core\Url;
/**
* Provides a contextual_links element.
*
* @RenderElement("contextual_links")
*/
class ContextualLinks extends RenderElement {
/**
* {@inheritdoc}
*/
public function getInfo() {
$class = static::class;
return [
'#pre_render' => [
[
$class,
'preRenderLinks',
],
],
'#theme' => 'links__contextual',
'#links' => [],
'#attributes' => [
'class' => [
'contextual-links',
],
],
'#attached' => [
'library' => [
'contextual/drupal.contextual-links',
],
],
];
}
/**
* Pre-render callback: Builds a renderable array for contextual links.
*
* @param array $element
* A renderable array containing a #contextual_links property, which is a
* keyed array. Each key is the name of the group of contextual links to
* render (based on the 'group' key in the *.links.contextual.yml files for
* all enabled modules). The value contains an associative array containing
* the following keys:
* - route_parameters: The route parameters passed to the url generator.
* - metadata: Any additional data needed in order to alter the link.
* @code
* array('#contextual_links' => array(
* 'block' => array(
* 'route_parameters' => array('block' => 'system.menu-tools'),
* ),
* 'menu' => array(
* 'route_parameters' => array('menu' => 'tools'),
* ),
* ))
* @endcode
*
* @return array
* A renderable array representing contextual links.
*/
public static function preRenderLinks(array $element) {
// Retrieve contextual menu links.
$items = [];
$contextual_links_manager = static::contextualLinkManager();
foreach ($element['#contextual_links'] as $group => $args) {
$args += [
'route_parameters' => [],
'metadata' => [],
];
$items += $contextual_links_manager
->getContextualLinksArrayByGroup($group, $args['route_parameters'], $args['metadata']);
}
// Transform contextual links into parameters suitable for links.html.twig.
$links = [];
foreach ($items as $class => $item) {
$class = Html::getClass($class);
$links[$class] = [
'title' => $item['title'],
'url' => Url::fromRoute(isset($item['route_name']) ? $item['route_name'] : '', isset($item['route_parameters']) ? $item['route_parameters'] : [], $item['localized_options']),
];
}
$element['#links'] = $links;
// Allow modules to alter the renderable contextual links element.
static::moduleHandler()
->alter('contextual_links_view', $element, $items);
// If there are no links, tell drupal_render() to abort rendering.
if (empty($element['#links'])) {
$element['#printed'] = TRUE;
}
return $element;
}
/**
* Wraps the contextual link manager.
*
* @return \Drupal\Core\Menu\ContextualLinkManager
*/
protected static function contextualLinkManager() {
return \Drupal::service('plugin.manager.menu.contextual_link');
}
/**
* Wraps the module handler.
*
* @return \Drupal\Core\Extension\ModuleHandlerInterface
*/
protected static function moduleHandler() {
return \Drupal::moduleHandler();
}
}
Classes
Name | Description |
---|---|
ContextualLinks | Provides a contextual_links element. |