class SvgImageFieldItem in SVG Image Field 2.0.x

Same name and namespace in other branches

8 src/Plugin/Field/FieldType/SvgImageFieldItem.php \Drupal\svg_image_field\Plugin\Field\FieldType\SvgImageFieldItem
2.1.x src/Plugin/Field/FieldType/SvgImageFieldItem.php \Drupal\svg_image_field\Plugin\Field\FieldType\SvgImageFieldItem

Plugin implementation of the 'svg_image' field type.

Plugin annotation


@FieldType(
  id = "svg_image_field",
  label = @Translation("Svg Image"),
  description = @Translation("This field stores the ID of an image file as an integer value."),
  category = @Translation("Reference"),
  default_widget = "svg_image_field_widget",
  default_formatter = "svg_image_field_formatter",
  column_groups = {
    "file" = {
      "label" = @Translation("File"),
      "columns" = {
        "target_id"
      },
      "require_all_groups_for_translation" = TRUE
    },
    "alt" = {
      "label" = @Translation("Alt"),
      "translatable" = TRUE
    },
    "title" = {
      "label" = @Translation("Title"),
      "translatable" = TRUE
    },
  },
  list_class = "\Drupal\file\Plugin\Field\FieldType\FileFieldItemList",
  constraints = {"ReferenceAccess" = {}, "FileValidation" = {}}
)

Hierarchy

class \Drupal\Core\TypedData\TypedData implements PluginInspectionInterface, TypedDataInterface uses DependencySerializationTrait, StringTranslationTrait, TypedDataTrait
- class \Drupal\Core\TypedData\Plugin\DataType\Map implements \Drupal\Core\TypedData\Plugin\DataType\IteratorAggregate, ComplexDataInterface
  - class \Drupal\Core\Field\FieldItemBase implements FieldItemInterface
    class \Drupal\Core\Field\Plugin\Field\FieldType\EntityReferenceItem implements PreconfiguredFieldUiOptionsInterface, OptionsProviderInterface
    class \Drupal\file\Plugin\Field\FieldType\FileItem
    class \Drupal\svg_image_field\Plugin\Field\FieldType\SvgImageFieldItem

Expanded class hierarchy of SvgImageFieldItem

File

src/Plugin/Field/FieldType/SvgImageFieldItem.php, line 42

Namespace

Drupal\svg_image_field\Plugin\Field\FieldType

View source

class SvgImageFieldItem extends FileItem {

  /**
   * The entity manager service.
   *
   * @var \Drupal\Core\Entity\EntityTypeManagerInterface
   */
  protected $entityTypeManager;

  /**
   * {@inheritdoc}
   */
  public static function defaultStorageSettings() {
    return [
      'default_image' => [
        'uuid' => NULL,
        'alt' => '',
        'title' => '',
      ],
    ] + parent::defaultStorageSettings();
  }

  /**
   * {@inheritdoc}
   */
  public static function defaultFieldSettings() {
    $settings = [
      'file_extensions' => 'svg',
      'alt_field' => 1,
      'alt_field_required' => 1,
      'title_field' => 0,
      'title_field_required' => 0,
      'default_image' => [
        'uuid' => NULL,
        'alt' => '',
        'title' => '',
      ],
    ] + parent::defaultFieldSettings();
    unset($settings['description_field']);
    return $settings;
  }

  /**
   * {@inheritdoc}
   */
  public static function schema(FieldStorageDefinitionInterface $field_definition) {
    return [
      'columns' => [
        'target_id' => [
          'description' => 'The ID of the file entity.',
          'type' => 'int',
          'unsigned' => TRUE,
        ],
        'alt' => [
          'description' => "Alternative image text, for the image's 'alt' attribute.",
          'type' => 'varchar',
          'length' => 512,
        ],
        'title' => [
          'description' => "Image title text, for the image's 'title' attribute.",
          'type' => 'varchar',
          'length' => 1024,
        ],
      ],
      'indexes' => [
        'target_id' => [
          'target_id',
        ],
      ],
      'foreign keys' => [
        'target_id' => [
          'table' => 'file_managed',
          'columns' => [
            'target_id' => 'fid',
          ],
        ],
      ],
    ];
  }

  /**
   * {@inheritdoc}
   */
  public static function propertyDefinitions(FieldStorageDefinitionInterface $field_definition) {
    $properties = parent::propertyDefinitions($field_definition);
    unset($properties['display']);
    unset($properties['description']);
    $properties['alt'] = DataDefinition::create('string')
      ->setLabel(t('Alternative text'))
      ->setDescription(t("Alternative image text, for the image's 'alt' attribute."));
    $properties['title'] = DataDefinition::create('string')
      ->setLabel(t('Title'))
      ->setDescription(t("Image title text, for the image's 'title' attribute."));
    return $properties;
  }

  /**
   * {@inheritdoc}
   */
  public function storageSettingsForm(array &$form, FormStateInterface $form_state, $has_data) {
    $element = [];

    // We need the field-level 'default_image' setting, and $this->getSettings()
    // will only provide the instance-level one, so we need to explicitly fetch
    // the field.
    $settings = $this
      ->getFieldDefinition()
      ->getFieldStorageDefinition()
      ->getSettings();
    $scheme_options = \Drupal::service('stream_wrapper_manager')
      ->getNames(StreamWrapperInterface::WRITE_VISIBLE);
    $element['uri_scheme'] = [
      '#type' => 'radios',
      '#title' => t('Upload destination'),
      '#options' => $scheme_options,
      '#default_value' => $settings['uri_scheme'],
      '#description' => t('Select where the final files should be stored. Private file storage has significantly more overhead than public files, but allows restricted access to files within this field.'),
    ];

    // Add default_image element.
    static::defaultImageForm($element, $settings);
    $element['default_image']['#description'] = t('If no image is uploaded, this image will be shown on display.');
    return $element;
  }

  /**
   * {@inheritdoc}
   */
  public function fieldSettingsForm(array $form, FormStateInterface $form_state) {

    // Get base form from FileItem.
    $element = parent::fieldSettingsForm($form, $form_state);
    $settings = $this
      ->getSettings();

    // Remove the description option.
    unset($element['description_field']);
    $element['file_extensions']['#disabled'] = TRUE;

    // Add title and alt configuration options.
    $element['alt_field'] = [
      '#type' => 'checkbox',
      '#title' => t('Enable <em>Alt</em> field'),
      '#default_value' => $settings['alt_field'],
      '#description' => t('The alt attribute may be used by search engines, screen readers, and when the image cannot be loaded. Enabling this field is recommended.'),
      '#weight' => 9,
    ];
    $element['alt_field_required'] = [
      '#type' => 'checkbox',
      '#title' => t('<em>Alt</em> field required'),
      '#default_value' => $settings['alt_field_required'],
      '#description' => t('Making this field required is recommended.'),
      '#weight' => 10,
      '#states' => [
        'visible' => [
          ':input[name="settings[alt_field]"]' => [
            'checked' => TRUE,
          ],
        ],
      ],
    ];
    $element['title_field'] = [
      '#type' => 'checkbox',
      '#title' => t('Enable <em>Title</em> field'),
      '#default_value' => $settings['title_field'],
      '#description' => t('The title attribute is used as a tooltip when the mouse hovers over the image. Enabling this field is not recommended as it can cause problems with screen readers.'),
      '#weight' => 11,
    ];
    $element['title_field_required'] = [
      '#type' => 'checkbox',
      '#title' => t('<em>Title</em> field required'),
      '#default_value' => $settings['title_field_required'],
      '#weight' => 12,
      '#states' => [
        'visible' => [
          ':input[name="settings[title_field]"]' => [
            'checked' => TRUE,
          ],
        ],
      ],
    ];

    // Add default_image element.
    static::defaultImageForm($element, $settings);
    $element['default_image']['#description'] = t("If no image is uploaded, this image will be shown on display and will override the field's default image.");
    return $element;
  }

  /**
   * Builds the default_image details element.
   *
   * @param array $element
   *   The form associative array passed by reference.
   * @param array $settings
   *   The field settings array.
   */
  protected function defaultImageForm(array &$element, array $settings) {
    $element['default_image'] = [
      '#type' => 'details',
      '#title' => t('Default image'),
      '#open' => TRUE,
    ];

    // Convert the stored UUID to a FID.
    $fids = [];
    $uuid = $settings['default_image']['uuid'];
    if ($uuid && ($file = $this
      ->getEntityTypeManager()
      ->getStorage('file')
      ->loadByProperties([
      'uuid' => $uuid,
    ]))) {
      $file = reset($file);
      $fids[0] = $file
        ->id();
    }
    $upload_validators = $this
      ->getUploadValidators();
    $upload_validators['svg_image_field_validate_mime_type'] = [];
    $element['default_image']['uuid'] = [
      '#type' => 'managed_file',
      '#title' => t('Image'),
      '#description' => t('Image to be shown if no image is uploaded.'),
      '#default_value' => $fids,
      '#upload_location' => $settings['uri_scheme'] . '://default_images/',
      '#element_validate' => [
        '\\Drupal\\file\\Element\\ManagedFile::validateManagedFile',
        [
          get_class($this),
          'validateDefaultImageForm',
        ],
      ],
      '#upload_validators' => $upload_validators,
    ];
    $element['default_image']['alt'] = [
      '#type' => 'textfield',
      '#title' => t('Alternative text'),
      '#description' => t('This text will be used by screen readers, search engines, and when the image cannot be loaded.'),
      '#default_value' => $settings['default_image']['alt'],
      '#maxlength' => 512,
    ];
    $element['default_image']['title'] = [
      '#type' => 'textfield',
      '#title' => t('Title'),
      '#description' => t('The title attribute is used as a tooltip when the mouse hovers over the image.'),
      '#default_value' => $settings['default_image']['title'],
      '#maxlength' => 1024,
    ];
  }

  /**
   * Validates the managed_file element for the default Image form.
   *
   * This function ensures the fid is a scalar value and not an array. It is
   * assigned as a #element_validate callback in
   * \Drupal\image\Plugin\Field\FieldType\ImageItem::defaultImageForm().
   *
   * @param array $element
   *   The form element to process.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The form state.
   */
  public static function validateDefaultImageForm(array &$element, FormStateInterface $form_state) {

    // Consolidate the array value of this field to a single FID as #extended
    // for default image is not TRUE and this is a single value.
    if (isset($element['fids']['#value'][0])) {
      $value = $element['fids']['#value'][0];

      // Convert the file ID to a uuid.
      if ($file = \Drupal::entityTypeManager()
        ->getStorage('file')
        ->load($value)) {
        $value = $file
          ->uuid();
      }
    }
    else {
      $value = '';
    }
    $form_state
      ->setValueForElement($element, $value);
  }

  /**
   * {@inheritdoc}
   */
  public function isDisplayed() {

    // Image items do not have per-item visibility settings.
    return TRUE;
  }

  /**
   * Gets the entity manager.
   *
   * @return \Drupal\Core\Entity\EntityTypeManagerInterface
   *   The entity manager service.
   */
  protected function getEntityTypeManager() {
    if (!isset($this->entityTypeManager)) {
      $this->entityTypeManager = \Drupal::entityTypeManager();
    }
    return $this->entityTypeManager;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
DependencySerializationTrait::$_entityStorages	protected	property
DependencySerializationTrait::$_serviceIds	protected	property
DependencySerializationTrait::__sleep	public	function		2
DependencySerializationTrait::__wakeup	public	function		2
EntityReferenceItem::calculateDependencies	public static	function	Calculates dependencies for field items. Overrides FieldItemBase::calculateDependencies
EntityReferenceItem::calculateStorageDependencies	public static	function	Calculates dependencies for field items on the storage level. Overrides FieldItemBase::calculateStorageDependencies
EntityReferenceItem::fieldSettingsAjaxProcess	public static	function	Render API callback: Processes the field settings form.
EntityReferenceItem::fieldSettingsAjaxProcessElement	public static	function	Adds entity_reference specific properties to AJAX form elements from the field settings form.
EntityReferenceItem::fieldSettingsFormValidate	public static	function	Form element validation handler; Invokes selection plugin's validation.
EntityReferenceItem::formProcessMergeParent	public static	function	Render API callback: Moves entity_reference specific Form API elements (i.e. 'handler_settings') up a level for easier processing by the validation and submission handlers.
EntityReferenceItem::getConstraints	public	function	Gets a list of validation constraints. Overrides TypedData::getConstraints
EntityReferenceItem::getPossibleOptions	public	function	Returns an array of possible values with labels for display. Overrides OptionsProviderInterface::getPossibleOptions
EntityReferenceItem::getPossibleValues	public	function	Returns an array of possible values. Overrides OptionsProviderInterface::getPossibleValues
EntityReferenceItem::getRandomBundle	protected static	function	Gets a bundle for a given entity type and selection options.
EntityReferenceItem::getSettableOptions	public	function	Returns an array of settable values with labels for display. Overrides OptionsProviderInterface::getSettableOptions
EntityReferenceItem::getSettableValues	public	function	Returns an array of settable values. Overrides OptionsProviderInterface::getSettableValues
EntityReferenceItem::getValue	public	function	Gets the data value. Overrides Map::getValue
EntityReferenceItem::hasNewEntity	public	function	Determines whether the item holds an unsaved entity.
EntityReferenceItem::isEmpty	public	function	Determines whether the data structure is empty. Overrides Map::isEmpty
EntityReferenceItem::mainPropertyName	public static	function	Returns the name of the main property, if any. Overrides FieldItemBase::mainPropertyName
EntityReferenceItem::onChange	public	function	React to changes to a child property or item. Overrides Map::onChange
EntityReferenceItem::onDependencyRemoval	public static	function	Informs the plugin that a dependency of the field will be deleted. Overrides FieldItemBase::onDependencyRemoval
EntityReferenceItem::preSave	public	function	Defines custom presave behavior for field values. Overrides FieldItemBase::preSave	1
EntityReferenceItem::settingsAjax	public static	function	Ajax callback for the handler settings form.
EntityReferenceItem::settingsAjaxSubmit	public static	function	Submit handler for the non-JS case.
EntityReferenceItem::setValue	public	function	Sets the data value. Overrides FieldItemBase::setValue
FieldItemBase::delete	public	function	Defines custom delete behavior for field values. Overrides FieldItemInterface::delete	2
FieldItemBase::deleteRevision	public	function	Defines custom revision delete behavior for field values. Overrides FieldItemInterface::deleteRevision
FieldItemBase::fieldSettingsFromConfigData	public static	function	Returns a settings array in the field type's canonical representation. Overrides FieldItemInterface::fieldSettingsFromConfigData	1
FieldItemBase::fieldSettingsToConfigData	public static	function	Returns a settings array that can be stored as a configuration value. Overrides FieldItemInterface::fieldSettingsToConfigData	1
FieldItemBase::getEntity	public	function	Gets the entity that field belongs to. Overrides FieldItemInterface::getEntity
FieldItemBase::getFieldDefinition	public	function	Gets the field definition. Overrides FieldItemInterface::getFieldDefinition
FieldItemBase::getLangcode	public	function	Gets the langcode of the field values held in the object. Overrides FieldItemInterface::getLangcode
FieldItemBase::getSetting	protected	function	Returns the value of a field setting.
FieldItemBase::getSettings	protected	function	Returns the array of field settings.
FieldItemBase::postSave	public	function	Defines custom post-save behavior for field values. Overrides FieldItemInterface::postSave	2
FieldItemBase::storageSettingsFromConfigData	public static	function	Returns a settings array in the field type's canonical representation. Overrides FieldItemInterface::storageSettingsFromConfigData	2
FieldItemBase::storageSettingsToConfigData	public static	function	Returns a settings array that can be stored as a configuration value. Overrides FieldItemInterface::storageSettingsToConfigData	2
FieldItemBase::view	public	function	Returns a renderable array for a single field item. Overrides FieldItemInterface::view
FieldItemBase::writePropertyValue	protected	function	Different to the parent Map class, we avoid creating property objects as far as possible in order to optimize performance. Thus we just update $this->values if no property object has been created yet. Overrides Map::writePropertyValue
FieldItemBase::__construct	public	function	Constructs a TypedData object given its definition and context. Overrides TypedData::__construct	1
FieldItemBase::__get	public	function	Magic method: Gets a property value. Overrides FieldItemInterface::__get	2
FieldItemBase::__isset	public	function	Magic method: Determines whether a property is set. Overrides FieldItemInterface::__isset
FieldItemBase::__set	public	function	Magic method: Sets a property value. Overrides FieldItemInterface::__set	1
FieldItemBase::__unset	public	function	Magic method: Unsets a property. Overrides FieldItemInterface::__unset
FileItem::doGetUploadLocation	protected static	function	Determines the URI for a file field.
FileItem::generateSampleValue	public static	function	Generates placeholder field values. Overrides EntityReferenceItem::generateSampleValue	1
FileItem::getPreconfiguredOptions	public static	function	Returns preconfigured field options for a field type. Overrides EntityReferenceItem::getPreconfiguredOptions
FileItem::getUploadLocation	public	function	Determines the URI for a file field.
FileItem::getUploadValidators	public	function	Retrieves the upload validators for a file field.
FileItem::validateDirectory	public static	function	Form API callback.
FileItem::validateExtensions	public static	function	Form API callback.
FileItem::validateMaxFilesize	public static	function	Form API callback.
Map::$definition	protected	property	The data definition. Overrides TypedData::$definition
Map::$properties	protected	property	The array of properties.
Map::$values	protected	property	An array of values for the contained properties.
Map::applyDefaultValue	public	function	Applies the default value. Overrides TypedData::applyDefaultValue	4
Map::get	public	function	Gets a property object. Overrides ComplexDataInterface::get
Map::getIterator	public	function
Map::getProperties	public	function	Gets an array of property objects. Overrides ComplexDataInterface::getProperties
Map::getString	public	function	Returns a string representation of the data. Overrides TypedData::getString
Map::set	public	function	Sets a property value. Overrides ComplexDataInterface::set
Map::toArray	public	function	Returns an array of all property values. Overrides ComplexDataInterface::toArray	1
Map::__clone	public	function	Magic method: Implements a deep clone.
StringTranslationTrait::$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.
SvgImageFieldItem::$entityTypeManager	protected	property	The entity manager service.
SvgImageFieldItem::defaultFieldSettings	public static	function	Defines the field-level settings for this plugin. Overrides FileItem::defaultFieldSettings
SvgImageFieldItem::defaultImageForm	protected	function	Builds the default_image details element.
SvgImageFieldItem::defaultStorageSettings	public static	function	Defines the storage-level settings for this plugin. Overrides FileItem::defaultStorageSettings
SvgImageFieldItem::fieldSettingsForm	public	function	Returns a form for the field-level settings. Overrides FileItem::fieldSettingsForm
SvgImageFieldItem::getEntityTypeManager	protected	function	Gets the entity manager.
SvgImageFieldItem::isDisplayed	public	function	Determines whether an item should be displayed when rendering the field. Overrides FileItem::isDisplayed
SvgImageFieldItem::propertyDefinitions	public static	function	Defines field item properties. Overrides FileItem::propertyDefinitions
SvgImageFieldItem::schema	public static	function	Returns the schema for the field. Overrides FileItem::schema
SvgImageFieldItem::storageSettingsForm	public	function	Returns a form for the storage-level settings. Overrides FileItem::storageSettingsForm
SvgImageFieldItem::validateDefaultImageForm	public static	function	Validates the managed_file element for the default Image form.
TypedData::$name	protected	property	The property name.
TypedData::$parent	protected	property	The parent typed data object.
TypedData::createInstance	public static	function	Constructs a TypedData object given its definition and context. Overrides TypedDataInterface::createInstance
TypedData::getDataDefinition	public	function	Gets the data definition. Overrides TypedDataInterface::getDataDefinition
TypedData::getName	public	function	Returns the name of a property or item. Overrides TypedDataInterface::getName
TypedData::getParent	public	function	Returns the parent data structure; i.e. either complex data or a list. Overrides TypedDataInterface::getParent
TypedData::getPluginDefinition	public	function	Gets the definition of the plugin implementation. Overrides PluginInspectionInterface::getPluginDefinition
TypedData::getPluginId	public	function	Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
TypedData::getPropertyPath	public	function	Returns the property path of the data. Overrides TypedDataInterface::getPropertyPath
TypedData::getRoot	public	function	Returns the root of the typed data tree. Overrides TypedDataInterface::getRoot
TypedData::setContext	public	function	Sets the context of a property or item via a context aware parent. Overrides TypedDataInterface::setContext
TypedData::validate	public	function	Validates the currently set data value. Overrides TypedDataInterface::validate
TypedDataTrait::$typedDataManager	protected	property	The typed data manager used for creating the data types.
TypedDataTrait::getTypedDataManager	public	function	Gets the typed data manager.	2
TypedDataTrait::setTypedDataManager	public	function	Sets the typed data manager.	2

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class SvgImageFieldItem in SVG Image Field 2.0.x

Plugin annotation

Hierarchy

File

Namespace

Members

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