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class YouTubeDefaultWidget in YouTube Field 8

Plugin implementation of the 'youtube_default' widget.

Plugin annotation


@FieldWidget(
  id = "youtube",
  label = @Translation("YouTube video widget"),
  field_types = {
    "youtube"
  },
)

Hierarchy

Expanded class hierarchy of YouTubeDefaultWidget

File

src/Plugin/Field/FieldWidget/YouTubeDefaultWidget.php, line 20

Namespace

Drupal\youtube\Plugin\Field\FieldWidget
View source 
class YouTubeDefaultWidget extends WidgetBase {

  /**
   * {@inheritdoc}
   */
  public static function defaultSettings() {
    return [
      'placeholder_url' => '',
    ] + parent::defaultSettings();
  }

  /**
   * {@inheritdoc}
   */
  public function settingsForm(array $form, FormStateInterface $form_state) {
    $elements = parent::settingsForm($form, $form_state);
    $elements['placeholder_url'] = [
      '#type' => 'textfield',
      '#title' => $this
        ->t('Placeholder for URL'),
      '#default_value' => $this
        ->getSetting('placeholder_url'),
      '#description' => $this
        ->t('Text that will be shown inside the field until a value is entered. This hint is usually a sample value or a brief description of the expected format.'),
    ];
    return $elements;
  }

  /**
   * {@inheritdoc}
   */
  public function settingsSummary() {
    $summary = [];
    $placeholder_url = $this
      ->getSetting('placeholder_url');
    if (empty($placeholder_url)) {
      $summary[] = $this
        ->t('No placeholders');
    }
    else {
      if (!empty($placeholder_url)) {
        $summary[] = $this
          ->t('URL placeholder: @placeholder_url', [
          '@placeholder_url' => $placeholder_url,
        ]);
      }
    }
    return $summary;
  }

  /**
   * {@inheritdoc}
   */
  public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) {
    $element['input'] = $element + [
      '#type' => 'textfield',
      '#placeholder' => $this
        ->getSetting('placeholder_url'),
      '#default_value' => isset($items[$delta]->input) ? $items[$delta]->input : NULL,
      '#maxlength' => 255,
      '#element_validate' => [
        [
          $this,
          'validateInput',
        ],
      ],
    ];
    if ($element['input']['#description'] == '') {
      $element['input']['#description'] = $this
        ->t('Enter the YouTube URL. Valid URL formats include: http://www.youtube.com/watch?v=1SqBdS0XkV4 and http://youtu.be/1SqBdS0XkV4.');
    }
    if (isset($items
      ->get($delta)->video_id)) {
      $element['video_id'] = [
        '#prefix' => '<div class="youtube-video-id">',
        '#markup' => $this
          ->t('YouTube video ID: @video_id', [
          '@video_id' => $items
            ->get($delta)->video_id,
        ]),
        '#suffix' => '</div>',
        '#weight' => 1,
      ];
    }
    return $element;
  }

  /**
   * Validate video URL.
   */
  public function validateInput(&$element, FormStateInterface &$form_state, $form) {
    $input = $element['#value'];
    $video_id = youtube_get_video_id($input);
    if ($video_id && strlen($video_id) <= 20) {
      $video_id_element = [
        '#parents' => $element['#parents'],
      ];
      array_pop($video_id_element['#parents']);
      $video_id_element['#parents'][] = 'video_id';
      $form_state
        ->setValueForElement($video_id_element, $video_id);
    }
    elseif (!empty($input)) {
      $form_state
        ->setError($element, $this
        ->t('Please provide a valid YouTube URL.'));
    }
  }

}

Members

Namesort descending Modifiers Type Description Overrides
AllowedTagsXssTrait::allowedTags public function Returns a list of tags allowed by AllowedTagsXssTrait::fieldFilterXss().
AllowedTagsXssTrait::displayAllowedTags public function Returns a human-readable list of allowed tags for display in help texts.
AllowedTagsXssTrait::fieldFilterXss public function Filters an HTML string to prevent XSS vulnerabilities.
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
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.
PluginSettingsBase::$defaultSettingsMerged protected property Whether default settings have been merged into the current $settings.
PluginSettingsBase::$thirdPartySettings protected property The plugin settings injected by third party modules.
PluginSettingsBase::calculateDependencies public function Calculates dependencies for the configured plugin. Overrides DependentPluginInterface::calculateDependencies 6
PluginSettingsBase::getSetting public function Returns the value of a setting, or its default value if absent. Overrides PluginSettingsInterface::getSetting
PluginSettingsBase::getSettings public function Returns the array of settings, including defaults for missing settings. Overrides PluginSettingsInterface::getSettings
PluginSettingsBase::getThirdPartyProviders public function Gets the list of third parties that store information. Overrides ThirdPartySettingsInterface::getThirdPartyProviders
PluginSettingsBase::getThirdPartySetting public function Gets the value of a third-party setting. Overrides ThirdPartySettingsInterface::getThirdPartySetting
PluginSettingsBase::getThirdPartySettings public function Gets all third-party settings of a given module. Overrides ThirdPartySettingsInterface::getThirdPartySettings
PluginSettingsBase::mergeDefaults protected function Merges default settings values into $settings.
PluginSettingsBase::onDependencyRemoval public function Informs the plugin that some configuration it depends on will be deleted. Overrides PluginSettingsInterface::onDependencyRemoval 3
PluginSettingsBase::setSetting public function Sets the value of a setting for the plugin. Overrides PluginSettingsInterface::setSetting
PluginSettingsBase::setSettings public function Sets the settings for the plugin. Overrides PluginSettingsInterface::setSettings
PluginSettingsBase::setThirdPartySetting public function Sets the value of a third-party setting. Overrides ThirdPartySettingsInterface::setThirdPartySetting
PluginSettingsBase::unsetThirdPartySetting public function Unsets a third-party setting. Overrides ThirdPartySettingsInterface::unsetThirdPartySetting
StringTranslationTrait::$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.
WidgetBase::$fieldDefinition protected property The field definition.
WidgetBase::$settings protected property The widget settings. Overrides PluginSettingsBase::$settings
WidgetBase::addMoreAjax public static function Ajax callback for the "Add another item" button.
WidgetBase::addMoreSubmit public static function Submission handler for the "Add another item" button.
WidgetBase::afterBuild public static function After-build handler for field elements in a form.
WidgetBase::create public static function Creates an instance of the plugin. Overrides ContainerFactoryPluginInterface::create 5
WidgetBase::errorElement public function Assigns a field-level validation error to the right widget sub-element. Overrides WidgetInterface::errorElement 8
WidgetBase::extractFormValues public function Extracts field values from submitted form values. Overrides WidgetBaseInterface::extractFormValues 2
WidgetBase::flagErrors public function Reports field-level validation errors against actual form elements. Overrides WidgetBaseInterface::flagErrors 2
WidgetBase::form public function Creates a form element for a field. Overrides WidgetBaseInterface::form 3
WidgetBase::formMultipleElements protected function Special handling to create form elements for multiple values. 1
WidgetBase::formSingleElement protected function Generates the form element for a single copy of the widget.
WidgetBase::getFieldSetting protected function Returns the value of a field setting.
WidgetBase::getFieldSettings protected function Returns the array of field settings.
WidgetBase::getFilteredDescription protected function Returns the filtered field description.
WidgetBase::getWidgetState public static function Retrieves processing information about the widget from $form_state. Overrides WidgetBaseInterface::getWidgetState
WidgetBase::getWidgetStateParents protected static function Returns the location of processing information within $form_state.
WidgetBase::handlesMultipleValues protected function Returns whether the widget handles multiple values.
WidgetBase::isApplicable public static function Returns if the widget can be used for the provided field. Overrides WidgetInterface::isApplicable 4
WidgetBase::isDefaultValueWidget protected function Returns whether the widget used for default value form.
WidgetBase::massageFormValues public function Massages the form values into the format expected for field values. Overrides WidgetInterface::massageFormValues 7
WidgetBase::setWidgetState public static function Stores processing information about the widget in $form_state. Overrides WidgetBaseInterface::setWidgetState
WidgetBase::__construct public function Constructs a WidgetBase object. Overrides PluginBase::__construct 5
YouTubeDefaultWidget::defaultSettings public static function Defines the default settings for this plugin. Overrides PluginSettingsBase::defaultSettings
YouTubeDefaultWidget::formElement public function Returns the form for a single field widget. Overrides WidgetInterface::formElement
YouTubeDefaultWidget::settingsForm public function Returns a form to configure settings for the widget. Overrides WidgetBase::settingsForm
YouTubeDefaultWidget::settingsSummary public function Returns a short summary for the current widget settings. Overrides WidgetBase::settingsSummary
YouTubeDefaultWidget::validateInput public function Validate video URL.