class WebformScale in Webform 8.5

Provides a webform element for a scale (1-5).

Plugin annotation

@FormElement("webform_scale");

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\Core\Render\Element\Radios uses CompositeFormElementTrait
          • class \Drupal\webform\Element\WebformScale

File

src/Element/WebformScale.php, line 14

Namespace

Drupal\webform\Element

class WebformScale extends Radios {

  /**
   * {@inheritdoc}
   */
  public function getInfo() {
    return parent::getInfo() + [
      '#min' => 1,
      '#max' => 5,
      '#min_text' => '',
      '#max_text' => '',
      '#scale_size' => 'medium',
      '#scale_type' => 'circle',
      '#scale_text' => 'below',
    ];
  }

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

    // Add text.
    $scale_text = [];
    if ($element['#min_text'] || $element['#max_text']) {
      $classes = [
        'webform-scale-text',
        'webform-scale-text-' . $element['#scale_text'],
      ];
      $scale_text = [
        '#prefix' => '<div class="' . implode(' ', $classes) . '">',
        '#suffix' => '</div>',
      ];
      if ($element['#min_text']) {
        $scale_text['min'] = [
          '#markup' => $element['#min_text'],
          '#prefix' => '<div class="webform-scale-text-min">',
          '#suffix' => '</div>',
        ];
      }
      if ($element['#max_text']) {
        $scale_text['max'] = [
          '#prefix' => '<div class="webform-scale-text-max">',
          '#suffix' => '</div>',
          '#markup' => $element['#max_text'],
        ];
      }
    }

    // Scale.
    $classes = [
      'webform-scale',
      'webform-scale-' . $element['#scale_type'],
      'webform-scale-' . $element['#scale_size'],
      'webform-scale-' . $element['#min'] . '-to-' . $element['#max'],
    ];
    $element['scale'] = [
      '#prefix' => '<div class="' . implode(' ', $classes) . '">',
      '#suffix' => '</div>',
    ];

    // Text above.
    if ($scale_text && $element['#scale_text'] === 'above') {
      $element['scale']['text'] = $scale_text;
    }

    // Options.
    $element['scale']['options'] = [
      '#prefix' => '<div class="webform-scale-options">',
      '#suffix' => '</div>',
    ];
    $ratings = range($element['#min'], $element['#max']);
    $element['#options'] = array_combine($ratings, $ratings);
    foreach ($element['#options'] as $key => $choice) {
      $parents_for_id = array_merge($element['#parents'], [
        $key,
      ]);
      $element['scale']['options'] += [
        $key => [],
      ];
      $element['scale']['options'][$key] += [
        '#type' => 'radio',
        '#title' => $choice,
        '#return_value' => $key,
        '#default_value' => isset($element['#default_value']) ? $element['#default_value'] : FALSE,
        '#attributes' => $element['#attributes'],
        '#parents' => $element['#parents'],
        '#id' => HtmlUtility::getUniqueId('edit-' . implode('-', $parents_for_id)),
        '#ajax' => isset($element['#ajax']) ? $element['#ajax'] : NULL,
        '#error_no_message' => TRUE,
        '#prefix' => '<div class="webform-scale-option">',
        '#suffix' => '</div>',
      ];

      // Add .webform-scale-N class to the radio.
      $element['scale']['options'][$key]['#attributes']['class'][] = 'webform-scale-' . $key;

      // Add .visually-hidden class to the radio.
      $element['scale']['options'][$key]['#attributes']['class'][] = 'visually-hidden';
    }

    // Text below.
    if ($scale_text && $element['#scale_text'] === 'below') {
      $element['scale']['text'] = $scale_text;
    }

    // Add scale library.
    $element['#attached']['library'][] = 'webform/webform.element.scale';
    return $element;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
CompositeFormElementTrait::preRenderCompositeFormElement	public static	function	Adds form element theming to an element if its title or description is set.
DependencySerializationTrait::$_entityStorages	protected	property	An array of entity type IDs keyed by the property name of their storages.
DependencySerializationTrait::$_serviceIds	protected	property	An array of service IDs keyed by property name used for serialization.
DependencySerializationTrait::__sleep	public	function		1
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::$messenger	protected	property	The messenger.	29
MessengerTrait::messenger	public	function	Gets the messenger.	29
MessengerTrait::setMessenger	public	function	Sets the messenger.
PluginBase::$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	3
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.	92
Radios::valueCallback	public static	function	Determines how user input is mapped to an element's #value property. Overrides FormElement::valueCallback
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.	1
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.
WebformScale::getInfo	public	function	Returns the element properties for this element. Overrides Radios::getInfo
WebformScale::processRadios	public static	function	Expands a radios element into individual radio elements. Overrides Radios::processRadios