abstract class WebformCompositeBase in Webform 6.x

Same name in this branch

6.x src/Element/WebformCompositeBase.php \Drupal\webform\Element\WebformCompositeBase
6.x src/Plugin/WebformElement/WebformCompositeBase.php \Drupal\webform\Plugin\WebformElement\WebformCompositeBase

Same name and namespace in other branches

8.5 src/Element/WebformCompositeBase.php \Drupal\webform\Element\WebformCompositeBase

Provides an base composite webform element.

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\FormElement implements FormElementInterface
    class \Drupal\webform\Element\WebformCompositeBase implements WebformCompositeInterface uses WebformCompositeFormElementTrait

Expanded class hierarchy of WebformCompositeBase

4 files declare their use of WebformCompositeBase

WebformExampleComposite.php in modules/webform_example_composite/src/Element/WebformExampleComposite.php
WebformOptionsStorage.php in src/WebformOptionsStorage.php
WebformTestComposite.php in tests/modules/webform_test_element/src/Element/WebformTestComposite.php
WebformTestCompositeFile.php in tests/modules/webform_test_element/src/Element/WebformTestCompositeFile.php

File

src/Element/WebformCompositeBase.php, line 14

Namespace

Drupal\webform\Element

View source

abstract class WebformCompositeBase extends FormElement implements WebformCompositeInterface {
  use WebformCompositeFormElementTrait;

  /**
   * {@inheritdoc}
   */
  public function getInfo() {
    $class = get_class($this);
    return [
      '#input' => TRUE,
      '#access' => TRUE,
      '#process' => [
        [
          $class,
          'processWebformComposite',
        ],
        [
          $class,
          'processAjaxForm',
        ],
      ],
      '#pre_render' => [
        [
          $class,
          'preRenderWebformCompositeFormElement',
        ],
      ],
      '#title_display' => 'invisible',
      '#required' => FALSE,
      '#flexbox' => TRUE,
    ];
  }

  /**
   * {@inheritdoc}
   */
  public static function valueCallback(&$element, $input, FormStateInterface $form_state) {

    /** @var \Drupal\webform\Plugin\WebformElementManagerInterface $element_manager */
    $element_manager = \Drupal::service('plugin.manager.webform.element');
    $composite_elements = static::getCompositeElements($element);
    $composite_elements = WebformElementHelper::getFlattened($composite_elements);

    // Get default value for inputs.
    $default_value = [];
    foreach ($composite_elements as $composite_key => $composite_element) {
      $element_plugin = $element_manager
        ->getElementInstance($composite_element);
      if ($element_plugin
        ->isInput($composite_element)) {
        $default_value[$composite_key] = '';
      }
    }
    if ($input === FALSE) {
      if (empty($element['#default_value']) || !is_array($element['#default_value'])) {
        $element['#default_value'] = [];
      }
      return $element['#default_value'] + $default_value;
    }
    return is_array($input) ? $input + $default_value : $default_value;
  }

  /**
   * {@inheritdoc}
   */
  public static function preRenderCompositeFormElement($element) {
    $element['#theme_wrappers'][] = 'form_element';
    $element['#wrapper_attributes']['id'] = $element['#id'] . '--wrapper';
    $element['#wrapper_attributes']['class'][] = 'form-composite';
    $element['#attributes']['id'] = $element['#id'];

    // Add class name to wrapper attributes.
    $class_name = str_replace('_', '-', $element['#type']);
    static::setAttributes($element, [
      'js-' . $class_name,
      $class_name,
    ]);
    return $element;
  }

  /**
   * Processes a composite webform element.
   */
  public static function processWebformComposite(&$element, FormStateInterface $form_state, &$complete_form) {
    if (isset($element['#initialize'])) {
      return $element;
    }
    $element['#initialize'] = TRUE;
    $element['#tree'] = TRUE;
    $composite_elements = static::initializeCompositeElements($element);
    static::processWebformCompositeElementsRecursive($element, $composite_elements, $form_state, $complete_form);
    $element += $composite_elements;

    // Add validate callback.
    $element += [
      '#element_validate' => [],
    ];
    array_unshift($element['#element_validate'], [
      get_called_class(),
      'validateWebformComposite',
    ]);
    if (!empty($element['#flexbox'])) {
      $element['#attached']['library'][] = 'webform/webform.element.flexbox';
    }
    return $element;
  }

  /**
   * Recursively processes a composite's elements.
   */
  public static function processWebformCompositeElementsRecursive(&$element, array &$composite_elements, FormStateInterface $form_state, &$complete_form) {

    /** @var \Drupal\webform\Plugin\WebformElementManagerInterface $element_manager */
    $element_manager = \Drupal::service('plugin.manager.webform.element');

    // Get composite element required/options states from visible/hidden states.
    $composite_required_states = WebformElementHelper::getRequiredFromVisibleStates($element);
    foreach ($composite_elements as $composite_key => &$composite_element) {

      // Make sure the composite key is a string.
      $composite_key = (string) $composite_key;
      if (!Element::child($composite_key) || !is_array($composite_element)) {
        continue;
      }

      // Set parents.
      $composite_element['#parents'] = array_merge($element['#parents'], [
        $composite_key,
      ]);

      // If the element's #access is FALSE, apply it to all sub elements.
      if ($element['#access'] === FALSE) {
        $composite_element['#access'] = FALSE;
      }

      // Get element plugin and set inputs #default_value.
      $element_plugin = $element_manager
        ->getElementInstance($composite_element);
      if ($element_plugin
        ->isInput($composite_element)) {

        // Set #default_value for sub elements.
        if (isset($element['#value'][$composite_key])) {
          $composite_element['#default_value'] = $element['#value'][$composite_key];
        }
      }

      // Build the webform element.
      $element_manager
        ->buildElement($composite_element, $complete_form, $form_state);

      // Custom validate required sub-element because they can be hidden
      // via #access or #states.
      // @see \Drupal\webform\Element\WebformCompositeBase::validateWebformComposite
      if ($composite_required_states && !empty($composite_element['#required'])) {
        unset($composite_element['#required']);
        $composite_element['#_required'] = TRUE;
        if (!isset($composite_element['#states'])) {
          $composite_element['#states'] = [];
        }
        $composite_element['#states'] += $composite_required_states;
      }
      static::processWebformCompositeElementsRecursive($element, $composite_element, $form_state, $complete_form);
    }
  }

  /**
   * Validates a composite element.
   */
  public static function validateWebformComposite(&$element, FormStateInterface $form_state, &$complete_form) {

    // IMPORTANT: Must get values from the $form_states since sub-elements
    // may call $form_state->setValueForElement() via their validation hook.
    // @see \Drupal\webform\Element\WebformEmailConfirm::validateWebformEmailConfirm
    // @see \Drupal\webform\Element\WebformOtherBase::validateWebformOther
    $value = NestedArray::getValue($form_state
      ->getValues(), $element['#parents']);

    // Only validate composite elements that are visible.
    if (Element::isVisibleElement($element)) {

      // Validate required composite elements.
      $composite_elements = static::getCompositeElements($element);
      $composite_elements = WebformElementHelper::getFlattened($composite_elements);
      foreach ($composite_elements as $composite_key => $composite_element) {
        $is_required = !empty($element[$composite_key]['#required']);
        $is_empty = isset($value[$composite_key]) && $value[$composite_key] === '';
        if ($is_required && $is_empty) {
          WebformElementHelper::setRequiredError($element[$composite_key], $form_state);
        }
      }
    }

    // Clear empty composites value.
    if (empty(array_filter($value))) {
      $element['#value'] = NULL;
      $form_state
        ->setValueForElement($element, NULL);
    }
  }

  /****************************************************************************/

  // Composite Elements.

  /****************************************************************************/

  /**
   * {@inheritdoc}
   */
  public static function getCompositeElements(array $element) {
    return [];
  }

  /**
   * {@inheritdoc}
   */
  public static function initializeCompositeElements(array &$element) {
    $composite_elements = static::getCompositeElements($element);
    static::initializeCompositeElementsRecursive($element, $composite_elements);
    return $composite_elements;
  }

  /**
   * Initialize a composite's elements recursively.
   *
   * @param array $element
   *   A render array for the current element.
   * @param array $composite_elements
   *   A render array containing a composite's elements.
   *
   * @throws \Exception
   *   Throws exception when unsupported element type is used with a composite
   *   element.
   */
  protected static function initializeCompositeElementsRecursive(array &$element, array &$composite_elements) {

    /** @var \Drupal\webform\Plugin\WebformElementManagerInterface $element_manager */
    $element_manager = \Drupal::service('plugin.manager.webform.element');
    foreach ($composite_elements as $composite_key => &$composite_element) {
      if (WebformElementHelper::property($composite_key)) {
        continue;
      }

      // Transfer '#{composite_key}_{property}' from main element to composite
      // element.
      foreach ($element as $property_key => $property_value) {
        if (strpos($property_key, '#' . $composite_key . '__') === 0) {
          $composite_property_key = str_replace('#' . $composite_key . '__', '#', $property_key);
          $composite_element[$composite_property_key] = $property_value;
        }
      }

      // Initialize composite sub-element.
      $element_plugin = $element_manager
        ->getElementInstance($composite_element);

      // Make sure to remove any #options references from unsupported elements.
      // This prevents "An illegal choice has been detected." error.
      // @see FormValidator::performRequiredValidation()
      if (isset($composite_element['#options']) && !$element_plugin
        ->hasProperty('options')) {
        unset($composite_element['#options']);
      }

      // Convert #placeholder to #empty_option for select elements.
      if (isset($composite_element['#placeholder']) && $element_plugin
        ->hasProperty('empty_option')) {
        $composite_element['#empty_option'] = $composite_element['#placeholder'];
      }

      // Apply #select2, #choices, and #chosen to select elements.
      if (isset($composite_element['#type']) && strpos($composite_element['#type'], 'select') !== FALSE) {
        $select_properties = [
          '#select2' => '#select2',
          '#choices' => '#choices',
          '#chosen' => '#chosen',
        ];
        $composite_element += array_intersect_key($element, $select_properties);
      }
      if ($element_plugin
        ->hasMultipleValues($composite_element)) {
        throw new \Exception('Multiple elements are not supported within composite elements.');
      }
      if ($element_plugin
        ->isComposite()) {
        throw new \Exception('Nested composite elements are not supported within composite elements.');
      }
      $element_plugin
        ->initialize($composite_element);
      static::initializeCompositeElementsRecursive($element, $composite_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
FormElement::processAutocomplete	public static	function	Adds autocomplete functionality to elements.
FormElement::processPattern	public static	function	#process callback for #pattern form element property.
FormElement::validatePattern	public static	function	#element_validate callback for #pattern form element property.
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.
WebformCompositeBase::getCompositeElements	public static	function	Get a renderable array of webform elements. Overrides WebformCompositeInterface::getCompositeElements	11
WebformCompositeBase::getInfo	public	function	Returns the element properties for this element. Overrides ElementInterface::getInfo	7
WebformCompositeBase::initializeCompositeElements	public static	function	Initialize a composite's elements. Overrides WebformCompositeInterface::initializeCompositeElements
WebformCompositeBase::initializeCompositeElementsRecursive	protected static	function	Initialize a composite's elements recursively.
WebformCompositeBase::preRenderCompositeFormElement	public static	function
WebformCompositeBase::processWebformComposite	public static	function	Processes a composite webform element.	2
WebformCompositeBase::processWebformCompositeElementsRecursive	public static	function	Recursively processes a composite's elements.
WebformCompositeBase::validateWebformComposite	public static	function	Validates a composite element.
WebformCompositeBase::valueCallback	public static	function	Determines how user input is mapped to an element's #value property. Overrides FormElement::valueCallback
WebformCompositeFormElementTrait::preRenderWebformCompositeFormElement	public static	function	Adds form element theming to an element if its title or description is set.	1

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abstract class WebformCompositeBase in Webform 6.x

Hierarchy

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Namespace

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