class BlockForm in Zircon Profile 8

Same name and namespace in other branches

8.0 core/modules/block/src/BlockForm.php \Drupal\block\BlockForm

Provides form for block instance forms.

Hierarchy

class \Drupal\Core\Form\FormBase implements ContainerInjectionInterface, FormInterface uses DependencySerializationTrait, LinkGeneratorTrait, RedirectDestinationTrait, UrlGeneratorTrait, StringTranslationTrait
- class \Drupal\Core\Entity\EntityForm implements EntityFormInterface
  - class \Drupal\block\BlockForm

Expanded class hierarchy of BlockForm

1 file declares its use of BlockForm

BlockFormTest.php in core/modules/block/tests/src/Unit/BlockFormTest.php: Contains \Drupal\Tests\block\Unit\BlockFormTest.

File

core/modules/block/src/BlockForm.php, line 25: Contains \Drupal\block\BlockForm.

Namespace

Drupal\block

View source

class BlockForm extends EntityForm {

  /**
   * The block entity.
   *
   * @var \Drupal\block\BlockInterface
   */
  protected $entity;

  /**
   * The block storage.
   *
   * @var \Drupal\Core\Entity\EntityStorageInterface
   */
  protected $storage;

  /**
   * The condition plugin manager.
   *
   * @var \Drupal\Core\Condition\ConditionManager
   */
  protected $manager;

  /**
   * The event dispatcher service.
   *
   * @var \Symfony\Component\EventDispatcher\EventDispatcherInterface
   */
  protected $dispatcher;

  /**
   * The language manager service.
   *
   * @var \Drupal\Core\Language\LanguageManagerInterface
   */
  protected $language;

  /**
   * The theme handler.
   *
   * @var \Drupal\Core\Extension\ThemeHandler
   */
  protected $themeHandler;

  /**
   * The context repository service.
   *
   * @var \Drupal\Core\Plugin\Context\ContextRepositoryInterface
   */
  protected $contextRepository;

  /**
   * Constructs a BlockForm object.
   *
   * @param \Drupal\Core\Entity\EntityManagerInterface $entity_manager
   *   The entity manager.
   * @param \Drupal\Core\Executable\ExecutableManagerInterface $manager
   *   The ConditionManager for building the visibility UI.
   * @param \Drupal\Core\Plugin\Context\ContextRepositoryInterface $context_repository
   *   The lazy context repository service.
   * @param \Drupal\Core\Language\LanguageManagerInterface $language
   *   The language manager.
   * @param \Drupal\Core\Extension\ThemeHandlerInterface $theme_handler
   * The theme handler.
   */
  public function __construct(EntityManagerInterface $entity_manager, ExecutableManagerInterface $manager, ContextRepositoryInterface $context_repository, LanguageManagerInterface $language, ThemeHandlerInterface $theme_handler) {
    $this->storage = $entity_manager
      ->getStorage('block');
    $this->manager = $manager;
    $this->contextRepository = $context_repository;
    $this->language = $language;
    $this->themeHandler = $theme_handler;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static($container
      ->get('entity.manager'), $container
      ->get('plugin.manager.condition'), $container
      ->get('context.repository'), $container
      ->get('language_manager'), $container
      ->get('theme_handler'));
  }

  /**
   * {@inheritdoc}
   */
  public function form(array $form, FormStateInterface $form_state) {
    $entity = $this->entity;

    // Store theme settings in $form_state for use below.
    if (!($theme = $entity
      ->getTheme())) {
      $theme = $this
        ->config('system.theme')
        ->get('default');
    }
    $form_state
      ->set('block_theme', $theme);

    // Store the gathered contexts in the form state for other objects to use
    // during form building.
    $form_state
      ->setTemporaryValue('gathered_contexts', $this->contextRepository
      ->getAvailableContexts());
    $form['#tree'] = TRUE;
    $form['settings'] = $entity
      ->getPlugin()
      ->buildConfigurationForm(array(), $form_state);
    $form['visibility'] = $this
      ->buildVisibilityInterface([], $form_state);

    // If creating a new block, calculate a safe default machine name.
    $form['id'] = array(
      '#type' => 'machine_name',
      '#maxlength' => 64,
      '#description' => $this
        ->t('A unique name for this block instance. Must be alpha-numeric and underscore separated.'),
      '#default_value' => !$entity
        ->isNew() ? $entity
        ->id() : $this
        ->getUniqueMachineName($entity),
      '#machine_name' => array(
        'exists' => '\\Drupal\\block\\Entity\\Block::load',
        'replace_pattern' => '[^a-z0-9_.]+',
        'source' => array(
          'settings',
          'label',
        ),
      ),
      '#required' => TRUE,
      '#disabled' => !$entity
        ->isNew(),
    );

    // Theme settings.
    if ($entity
      ->getTheme()) {
      $form['theme'] = array(
        '#type' => 'value',
        '#value' => $theme,
      );
    }
    else {
      $theme_options = array();
      foreach ($this->themeHandler
        ->listInfo() as $theme_name => $theme_info) {
        if (!empty($theme_info->status)) {
          $theme_options[$theme_name] = $theme_info->info['name'];
        }
      }
      $form['theme'] = array(
        '#type' => 'select',
        '#options' => $theme_options,
        '#title' => t('Theme'),
        '#default_value' => $theme,
        '#ajax' => array(
          'callback' => '::themeSwitch',
          'wrapper' => 'edit-block-region-wrapper',
        ),
      );
    }

    // Region settings.
    $entity_region = $entity
      ->getRegion();
    $region = $entity
      ->isNew() ? $this
      ->getRequest()->query
      ->get('region', $entity_region) : $entity_region;
    $form['region'] = array(
      '#type' => 'select',
      '#title' => $this
        ->t('Region'),
      '#description' => $this
        ->t('Select the region where this block should be displayed.'),
      '#default_value' => $region,
      '#empty_value' => BlockInterface::BLOCK_REGION_NONE,
      '#options' => system_region_list($theme, REGIONS_VISIBLE),
      '#prefix' => '<div id="edit-block-region-wrapper">',
      '#suffix' => '</div>',
    );
    $form['#attached']['library'][] = 'block/drupal.block.admin';
    return $form;
  }

  /**
   * Handles switching the available regions based on the selected theme.
   */
  public function themeSwitch($form, FormStateInterface $form_state) {
    $form['region']['#options'] = system_region_list($form_state
      ->getValue('theme'), REGIONS_VISIBLE);
    return $form['region'];
  }

  /**
   * Helper function for building the visibility UI form.
   *
   * @param array $form
   *   An associative array containing the structure of the form.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The current state of the form.
   *
   * @return array
   *   The form array with the visibility UI added in.
   */
  protected function buildVisibilityInterface(array $form, FormStateInterface $form_state) {
    $form['visibility_tabs'] = [
      '#type' => 'vertical_tabs',
      '#title' => $this
        ->t('Visibility'),
      '#parents' => [
        'visibility_tabs',
      ],
      '#attached' => [
        'library' => [
          'block/drupal.block',
        ],
      ],
    ];

    // @todo Allow list of conditions to be configured in
    //   https://www.drupal.org/node/2284687.
    $visibility = $this->entity
      ->getVisibility();
    foreach ($this->manager
      ->getDefinitions() as $condition_id => $definition) {

      // Don't display the current theme condition.
      if ($condition_id == 'current_theme') {
        continue;
      }

      // Don't display the language condition until we have multiple languages.
      if ($condition_id == 'language' && !$this->language
        ->isMultilingual()) {
        continue;
      }

      /** @var \Drupal\Core\Condition\ConditionInterface $condition */
      $condition = $this->manager
        ->createInstance($condition_id, isset($visibility[$condition_id]) ? $visibility[$condition_id] : []);
      $form_state
        ->set([
        'conditions',
        $condition_id,
      ], $condition);
      $condition_form = $condition
        ->buildConfigurationForm([], $form_state);
      $condition_form['#type'] = 'details';
      $condition_form['#title'] = $condition
        ->getPluginDefinition()['label'];
      $condition_form['#group'] = 'visibility_tabs';
      $form[$condition_id] = $condition_form;
    }
    if (isset($form['node_type'])) {
      $form['node_type']['#title'] = $this
        ->t('Content types');
      $form['node_type']['bundles']['#title'] = $this
        ->t('Content types');
      $form['node_type']['negate']['#type'] = 'value';
      $form['node_type']['negate']['#title_display'] = 'invisible';
      $form['node_type']['negate']['#value'] = $form['node_type']['negate']['#default_value'];
    }
    if (isset($form['user_role'])) {
      $form['user_role']['#title'] = $this
        ->t('Roles');
      unset($form['user_role']['roles']['#description']);
      $form['user_role']['negate']['#type'] = 'value';
      $form['user_role']['negate']['#value'] = $form['user_role']['negate']['#default_value'];
    }
    if (isset($form['request_path'])) {
      $form['request_path']['#title'] = $this
        ->t('Pages');
      $form['request_path']['negate']['#type'] = 'radios';
      $form['request_path']['negate']['#default_value'] = (int) $form['request_path']['negate']['#default_value'];
      $form['request_path']['negate']['#title_display'] = 'invisible';
      $form['request_path']['negate']['#options'] = [
        $this
          ->t('Show for the listed pages'),
        $this
          ->t('Hide for the listed pages'),
      ];
    }
    if (isset($form['language'])) {
      $form['language']['negate']['#type'] = 'value';
      $form['language']['negate']['#value'] = $form['language']['negate']['#default_value'];
    }
    return $form;
  }

  /**
   * {@inheritdoc}
   */
  protected function actions(array $form, FormStateInterface $form_state) {
    $actions = parent::actions($form, $form_state);
    $actions['submit']['#value'] = $this
      ->t('Save block');
    return $actions;
  }

  /**
   * {@inheritdoc}
   */
  public function validateForm(array &$form, FormStateInterface $form_state) {
    parent::validateForm($form, $form_state);

    // The Block Entity form puts all block plugin form elements in the
    // settings form element, so just pass that to the block for validation.
    $settings = (new FormState())
      ->setValues($form_state
      ->getValue('settings'));

    // Call the plugin validate handler.
    $this->entity
      ->getPlugin()
      ->validateConfigurationForm($form, $settings);

    // Update the original form values.
    $form_state
      ->setValue('settings', $settings
      ->getValues());
    $this
      ->validateVisibility($form, $form_state);
  }

  /**
   * Helper function to independently validate the visibility UI.
   *
   * @param array $form
   *   A nested array form elements comprising the form.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The current state of the form.
   */
  protected function validateVisibility(array $form, FormStateInterface $form_state) {

    // Validate visibility condition settings.
    foreach ($form_state
      ->getValue('visibility') as $condition_id => $values) {

      // All condition plugins use 'negate' as a Boolean in their schema.
      // However, certain form elements may return it as 0/1. Cast here to
      // ensure the data is in the expected type.
      if (array_key_exists('negate', $values)) {
        $values['negate'] = (bool) $values['negate'];
      }

      // Allow the condition to validate the form.
      $condition = $form_state
        ->get([
        'conditions',
        $condition_id,
      ]);
      $condition_values = (new FormState())
        ->setValues($values);
      $condition
        ->validateConfigurationForm($form, $condition_values);

      // Update the original form values.
      $form_state
        ->setValue([
        'visibility',
        $condition_id,
      ], $condition_values
        ->getValues());
    }
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    parent::submitForm($form, $form_state);
    $entity = $this->entity;

    // The Block Entity form puts all block plugin form elements in the
    // settings form element, so just pass that to the block for submission.
    // @todo Find a way to avoid this manipulation.
    $settings = (new FormState())
      ->setValues($form_state
      ->getValue('settings'));

    // Call the plugin submit handler.
    $entity
      ->getPlugin()
      ->submitConfigurationForm($form, $settings);
    $block = $entity
      ->getPlugin();

    // If this block is context-aware, set the context mapping.
    if ($block instanceof ContextAwarePluginInterface && $block
      ->getContextDefinitions()) {
      $context_mapping = $settings
        ->getValue('context_mapping', []);
      $block
        ->setContextMapping($context_mapping);
    }

    // Update the original form values.
    $form_state
      ->setValue('settings', $settings
      ->getValues());

    // Submit visibility condition settings.
    foreach ($form_state
      ->getValue('visibility') as $condition_id => $values) {

      // Allow the condition to submit the form.
      $condition = $form_state
        ->get([
        'conditions',
        $condition_id,
      ]);
      $condition_values = (new FormState())
        ->setValues($values);
      $condition
        ->submitConfigurationForm($form, $condition_values);
      if ($condition instanceof ContextAwarePluginInterface) {
        $context_mapping = isset($values['context_mapping']) ? $values['context_mapping'] : [];
        $condition
          ->setContextMapping($context_mapping);
      }

      // Update the original form values.
      $condition_configuration = $condition
        ->getConfiguration();
      $form_state
        ->setValue([
        'visibility',
        $condition_id,
      ], $condition_configuration);

      // Update the visibility conditions on the block.
      $entity
        ->getVisibilityConditions()
        ->addInstanceId($condition_id, $condition_configuration);
    }

    // Save the settings of the plugin.
    $entity
      ->save();
    drupal_set_message($this
      ->t('The block configuration has been saved.'));
    $form_state
      ->setRedirect('block.admin_display_theme', array(
      'theme' => $form_state
        ->getValue('theme'),
    ), array(
      'query' => array(
        'block-placement' => Html::getClass($this->entity
          ->id()),
      ),
    ));
  }

  /**
   * Generates a unique machine name for a block.
   *
   * @param \Drupal\block\BlockInterface $block
   *   The block entity.
   *
   * @return string
   *   Returns the unique name.
   */
  public function getUniqueMachineName(BlockInterface $block) {
    $suggestion = $block
      ->getPlugin()
      ->getMachineNameSuggestion();

    // Get all the blocks which starts with the suggested machine name.
    $query = $this->storage
      ->getQuery();
    $query
      ->condition('id', $suggestion, 'CONTAINS');
    $block_ids = $query
      ->execute();
    $block_ids = array_map(function ($block_id) {
      $parts = explode('.', $block_id);
      return end($parts);
    }, $block_ids);

    // Iterate through potential IDs until we get a new one. E.g.
    // 'plugin', 'plugin_2', 'plugin_3', etc.
    $count = 1;
    $machine_default = $suggestion;
    while (in_array($machine_default, $block_ids)) {
      $machine_default = $suggestion . '_' . ++$count;
    }
    return $machine_default;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
BlockForm::$contextRepository	protected	property	The context repository service.
BlockForm::$dispatcher	protected	property	The event dispatcher service.
BlockForm::$entity	protected	property	The block entity. Overrides EntityForm::$entity
BlockForm::$language	protected	property	The language manager service.
BlockForm::$manager	protected	property	The condition plugin manager.
BlockForm::$storage	protected	property	The block storage.
BlockForm::$themeHandler	protected	property	The theme handler.
BlockForm::actions	protected	function	Returns an array of supported actions for the current entity form. Overrides EntityForm::actions
BlockForm::buildVisibilityInterface	protected	function	Helper function for building the visibility UI form.
BlockForm::create	public static	function	Instantiates a new instance of this class. Overrides FormBase::create
BlockForm::form	public	function	Gets the actual form array to be built. Overrides EntityForm::form
BlockForm::getUniqueMachineName	public	function	Generates a unique machine name for a block.
BlockForm::submitForm	public	function	This is the default entity object builder function. It is called before any other submit handler to build the new entity object to be used by the following submit handlers. At this point of the form workflow the entity is validated and the form state… Overrides EntityForm::submitForm
BlockForm::themeSwitch	public	function	Handles switching the available regions based on the selected theme.
BlockForm::validateForm	public	function	Form validation handler. Overrides FormBase::validateForm
BlockForm::validateVisibility	protected	function	Helper function to independently validate the visibility UI.
BlockForm::__construct	public	function	Constructs a BlockForm object.
DependencySerializationTrait::$_serviceIds	protected	property	An array of service IDs keyed by property name used for serialization.
DependencySerializationTrait::__sleep	public	function		1
DependencySerializationTrait::__wakeup	public	function		2
EntityForm::$entityManager Deprecated	protected	property	The entity manager.	7
EntityForm::$entityTypeManager	protected	property	The entity type manager.
EntityForm::$moduleHandler	protected	property	The module handler service.
EntityForm::$operation	protected	property	The name of the current operation.
EntityForm::actionsElement	protected	function	Returns the action form element for the current entity form.
EntityForm::afterBuild	public	function	Form element #after_build callback: Updates the entity with submitted data.
EntityForm::buildEntity	public	function	Builds an updated entity object based upon the submitted form values. Overrides EntityFormInterface::buildEntity	2
EntityForm::buildForm	public	function	Form constructor. Overrides FormInterface::buildForm	7
EntityForm::copyFormValuesToEntity	protected	function	Copies top-level form values to entity properties	3
EntityForm::getBaseFormId	public	function	Returns a string identifying the base form. Overrides BaseFormIdInterface::getBaseFormId	4
EntityForm::getEntity	public	function	Gets the form entity. Overrides EntityFormInterface::getEntity
EntityForm::getEntityFromRouteMatch	public	function	Determines which entity will be used by this form from a RouteMatch object. Overrides EntityFormInterface::getEntityFromRouteMatch	2
EntityForm::getFormId	public	function	Returns a unique string identifying the form. Overrides FormInterface::getFormId	9
EntityForm::getOperation	public	function	Gets the operation identifying the form. Overrides EntityFormInterface::getOperation
EntityForm::init	protected	function	Initialize the form state and the entity before the first form build.	3
EntityForm::prepareEntity	protected	function	Prepares the entity object before the form is built first.	5
EntityForm::prepareInvokeAll	protected	function	Invokes the specified prepare hook variant.
EntityForm::processForm	public	function	Process callback: assigns weights and hides extra fields.
EntityForm::save	public	function	Form submission handler for the 'save' action. Overrides EntityFormInterface::save	36
EntityForm::setEntity	public	function	Sets the form entity. Overrides EntityFormInterface::setEntity
EntityForm::setEntityManager	public	function	Sets the entity manager for this form. Overrides EntityFormInterface::setEntityManager
EntityForm::setEntityTypeManager	public	function	Sets the entity type manager for this form. Overrides EntityFormInterface::setEntityTypeManager
EntityForm::setModuleHandler	public	function	Sets the module handler for this form. Overrides EntityFormInterface::setModuleHandler
EntityForm::setOperation	public	function	Sets the operation for this form. Overrides EntityFormInterface::setOperation
FormBase::$configFactory	protected	property	The config factory.	3
FormBase::$loggerFactory	protected	property	The logger factory.
FormBase::$requestStack	protected	property	The request stack.	1
FormBase::$routeMatch	protected	property	The route match.
FormBase::config	protected	function	Retrieves a configuration object.
FormBase::configFactory	protected	function	Gets the config factory for this form.	3
FormBase::container	private	function	Returns the service container.
FormBase::currentUser	protected	function	Gets the current user.
FormBase::getRequest	protected	function	Gets the request object.
FormBase::getRouteMatch	protected	function	Gets the route match.
FormBase::logger	protected	function	Gets the logger for a specific channel.
FormBase::resetConfigFactory	public	function	Resets the configuration factory.
FormBase::setConfigFactory	public	function	Sets the config factory for this form.
FormBase::setRequestStack	public	function	Sets the request stack object to use.
LinkGeneratorTrait::$linkGenerator	protected	property	The link generator.	1
LinkGeneratorTrait::getLinkGenerator	protected	function	Returns the link generator.
LinkGeneratorTrait::l	protected	function	Renders a link to a route given a route name and its parameters.
LinkGeneratorTrait::setLinkGenerator	public	function	Sets the link generator service.
RedirectDestinationTrait::$redirectDestination	protected	property	The redirect destination service.
RedirectDestinationTrait::getDestinationArray	protected	function	Prepares a 'destination' URL query parameter for use with \Drupal\Core\Url.
RedirectDestinationTrait::getRedirectDestination	protected	function	Returns the redirect destination service.
RedirectDestinationTrait::setRedirectDestination	public	function	Sets the redirect destination service.
StringTranslationTrait::$stringTranslation	protected	property	The string translation service.
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.
UrlGeneratorTrait::$urlGenerator	protected	property	The url generator.
UrlGeneratorTrait::getUrlGenerator	protected	function	Returns the URL generator service.
UrlGeneratorTrait::redirect	protected	function	Returns a redirect response object for the specified route.
UrlGeneratorTrait::setUrlGenerator	public	function	Sets the URL generator service.
UrlGeneratorTrait::url	protected	function	Generates a URL or path for a specific route based on the given parameters.

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class BlockForm in Zircon Profile 8

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