class Dropbutton in Drupal 9

Provides a render element for a set of links rendered as a drop-down button.

By default, this element sets #theme so that the 'links' theme hook is used for rendering, with suffixes so that themes can override this specifically without overriding all links theming. If the #subtype property is provided in your render array with value 'foo', #theme is set to links__dropbutton__foo; if not, it's links__dropbutton; both of these can be overridden by setting the #theme property in your render array. See template_preprocess_links() for documentation on the other properties used in theming; for instance, use element property #links to provide $variables['links'] for theming.

Properties:

• #links: An array of links to actions. See template_preprocess_links() for documentation the properties of links in this array.
• #dropbutton_type: A string defining a type of dropbutton variant for styling proposes. Renders as class `dropbutton--#dropbutton_type`.

Usage Example:

$form['actions']['extra_actions'] = array(
  '#type' => 'dropbutton',
  '#dropbutton_type' => 'small',
  '#links' => array(
    'simple_form' => array(
      'title' => $this
        ->t('Simple Form'),
      'url' => Url::fromRoute('fapi_example.simple_form'),
    ),
    'demo' => array(
      'title' => $this
        ->t('Build Demo'),
      'url' => Url::fromRoute('fapi_example.build_demo'),
    ),
  ),
);

Plugin annotation

@RenderElement("dropbutton");

Hierarchy

• class \Drupal\Component\Plugin\PluginBase implements DerivativeInspectionInterface, PluginInspectionInterface
  • class \Drupal\Core\Plugin\PluginBase uses DependencySerializationTrait, MessengerTrait, StringTranslationTrait
    • class \Drupal\Core\Render\Element\RenderElement implements ElementInterface
      • class \Drupal\Core\Render\Element\Dropbutton

See also

\Drupal\Core\Render\Element\Operations

2 string references to 'Dropbutton'

views.view.test_dropbutton.yml in core/modules/views/tests/modules/views_test_config/test_views/views.view.test_dropbutton.yml

core/modules/views/tests/modules/views_test_config/test_views/views.view.test_dropbutton.yml

views_views_data in core/modules/views/views.views.inc

Implements hook_views_data().

4 #type uses of Dropbutton

Actions::preRenderActionsDropbutton in core/lib/Drupal/Core/Render/Element/Actions.php

#pre_render callback for #type 'actions'.

Dropbutton::render in core/modules/views/src/Plugin/views/field/Dropbutton.php

Renders the field.

ViewEditForm::getFormBucket in core/modules/views_ui/src/ViewEditForm.php

Add information about a section to a display.

ViewEditForm::renderDisplayTop in core/modules/views_ui/src/ViewEditForm.php

Render the top of the display so it can be updated during ajax operations.

File

core/lib/Drupal/Core/Render/Element/Dropbutton.php, line 45

Namespace

Drupal\Core\Render\Element

class Dropbutton extends RenderElement {

  /**
   * {@inheritdoc}
   */
  public function getInfo() {
    $class = static::class;
    return [
      '#pre_render' => [
        [
          $class,
          'preRenderDropbutton',
        ],
      ],
      '#theme' => 'links__dropbutton',
    ];
  }

  /**
   * Pre-render callback: Attaches the dropbutton library and required markup.
   */
  public static function preRenderDropbutton($element) {
    $element['#attached']['library'][] = 'core/drupal.dropbutton';
    $element['#attributes']['class'][] = 'dropbutton';
    if (!empty($element['#dropbutton_type'])) {
      $element['#attributes']['class'][] = 'dropbutton--' . $element['#dropbutton_type'];
    }
    if (!isset($element['#theme_wrappers'])) {
      $element['#theme_wrappers'] = [];
    }
    array_unshift($element['#theme_wrappers'], 'dropbutton_wrapper');

    // Enable targeted theming of specific dropbuttons (e.g., 'operations' or
    // 'operations__node').
    if (isset($element['#subtype'])) {
      $element['#theme'] .= '__' . $element['#subtype'];
    }
    return $element;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
DependencySerializationTrait::$_entityStorages	protected	property
DependencySerializationTrait::$_serviceIds	protected	property
DependencySerializationTrait::__sleep	public	function		2
DependencySerializationTrait::__wakeup	public	function		2
Dropbutton::getInfo	public	function	Returns the element properties for this element. Overrides ElementInterface::getInfo	1
Dropbutton::preRenderDropbutton	public static	function	Pre-render callback: Attaches the dropbutton library and required markup.
MessengerTrait::$messenger	protected	property	The messenger.	27
MessengerTrait::messenger	public	function	Gets the messenger.	27
MessengerTrait::setMessenger	public	function	Sets the messenger.
PluginBase::$configuration	protected	property	Configuration information passed into the plugin.	1
PluginBase::$pluginDefinition	protected	property	The plugin implementation definition.	1
PluginBase::$pluginId	protected	property	The plugin_id.
PluginBase::DERIVATIVE_SEPARATOR		constant	A string which is used to separate base plugin IDs from the derivative ID.
PluginBase::getBaseId	public	function	Gets the base_plugin_id of the plugin instance. Overrides DerivativeInspectionInterface::getBaseId
PluginBase::getDerivativeId	public	function	Gets the derivative_id of the plugin instance. Overrides DerivativeInspectionInterface::getDerivativeId
PluginBase::getPluginDefinition	public	function	Gets the definition of the plugin implementation. Overrides PluginInspectionInterface::getPluginDefinition	2
PluginBase::getPluginId	public	function	Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
PluginBase::isConfigurable	public	function	Determines if the plugin is configurable.
PluginBase::__construct	public	function	Constructs a \Drupal\Component\Plugin\PluginBase object.	98
RenderElement::preRenderAjaxForm	public static	function	Adds Ajax information about an element to communicate with JavaScript.
RenderElement::preRenderGroup	public static	function	Adds members of this group as actual elements for rendering.
RenderElement::processAjaxForm	public static	function	Form element processing handler for the #ajax form property.	1
RenderElement::processGroup	public static	function	Arranges elements into groups.
RenderElement::setAttributes	public static	function	Sets a form element's class attribute. Overrides ElementInterface::setAttributes
StringTranslationTrait::$stringTranslation	protected	property	The string translation service.	4
StringTranslationTrait::formatPlural	protected	function	Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals	protected	function	Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation	protected	function	Gets the string translation service.
StringTranslationTrait::setStringTranslation	public	function	Sets the string translation service to use.	2
StringTranslationTrait::t	protected	function	Translates a string to the current language or to a given language.