class ImageWidget
Same name in other branches
- 9 core/modules/image/src/Plugin/Field/FieldWidget/ImageWidget.php \Drupal\image\Plugin\Field\FieldWidget\ImageWidget
- 8.9.x core/modules/image/src/Plugin/Field/FieldWidget/ImageWidget.php \Drupal\image\Plugin\Field\FieldWidget\ImageWidget
- 11.x core/modules/image/src/Plugin/Field/FieldWidget/ImageWidget.php \Drupal\image\Plugin\Field\FieldWidget\ImageWidget
Plugin implementation of the 'image_image' widget.
Hierarchy
- class \Drupal\Component\Plugin\PluginBase implements \Drupal\Component\Plugin\PluginInspectionInterface, \Drupal\Component\Plugin\DerivativeInspectionInterface
- class \Drupal\Core\Plugin\PluginBase extends \Drupal\Component\Plugin\PluginBase uses \Drupal\Core\StringTranslation\StringTranslationTrait, \Drupal\Core\DependencyInjection\DependencySerializationTrait, \Drupal\Core\Messenger\MessengerTrait
- class \Drupal\Core\Field\PluginSettingsBase extends \Drupal\Core\Plugin\PluginBase implements \Drupal\Core\Field\PluginSettingsInterface, \Drupal\Component\Plugin\DependentPluginInterface
- class \Drupal\Core\Field\WidgetBase extends \Drupal\Core\Field\PluginSettingsBase implements \Drupal\Core\Field\WidgetInterface, \Drupal\Core\Plugin\ContainerFactoryPluginInterface
- class \Drupal\file\Plugin\Field\FieldWidget\FileWidget extends \Drupal\Core\Field\WidgetBase
- class \Drupal\image\Plugin\Field\FieldWidget\ImageWidget extends \Drupal\file\Plugin\Field\FieldWidget\FileWidget
- class \Drupal\file\Plugin\Field\FieldWidget\FileWidget extends \Drupal\Core\Field\WidgetBase
- class \Drupal\Core\Field\WidgetBase extends \Drupal\Core\Field\PluginSettingsBase implements \Drupal\Core\Field\WidgetInterface, \Drupal\Core\Plugin\ContainerFactoryPluginInterface
- class \Drupal\Core\Field\PluginSettingsBase extends \Drupal\Core\Plugin\PluginBase implements \Drupal\Core\Field\PluginSettingsInterface, \Drupal\Component\Plugin\DependentPluginInterface
- class \Drupal\Core\Plugin\PluginBase extends \Drupal\Component\Plugin\PluginBase uses \Drupal\Core\StringTranslation\StringTranslationTrait, \Drupal\Core\DependencyInjection\DependencySerializationTrait, \Drupal\Core\Messenger\MessengerTrait
Expanded class hierarchy of ImageWidget
File
-
core/
modules/ image/ src/ Plugin/ Field/ FieldWidget/ ImageWidget.php, line 19
Namespace
Drupal\image\Plugin\Field\FieldWidgetView source
class ImageWidget extends FileWidget {
/**
* The image factory service.
*
* @var \Drupal\Core\Image\ImageFactory
*/
protected $imageFactory;
/**
* Constructs an ImageWidget object.
*
* @param string $plugin_id
* The plugin_id for the widget.
* @param mixed $plugin_definition
* The plugin implementation definition.
* @param \Drupal\Core\Field\FieldDefinitionInterface $field_definition
* The definition of the field to which the widget is associated.
* @param array $settings
* The widget settings.
* @param array $third_party_settings
* Any third party settings.
* @param \Drupal\Core\Render\ElementInfoManagerInterface $element_info
* The element info manager service.
* @param \Drupal\Core\Image\ImageFactory $image_factory
* The image factory service.
*/
public function __construct($plugin_id, $plugin_definition, FieldDefinitionInterface $field_definition, array $settings, array $third_party_settings, ElementInfoManagerInterface $element_info, ?ImageFactory $image_factory = NULL) {
parent::__construct($plugin_id, $plugin_definition, $field_definition, $settings, $third_party_settings, $element_info);
$this->imageFactory = $image_factory ?: \Drupal::service('image.factory');
}
/**
* {@inheritdoc}
*/
public static function defaultSettings() {
return [
'progress_indicator' => 'throbber',
'preview_image_style' => 'thumbnail',
] + parent::defaultSettings();
}
/**
* {@inheritdoc}
*/
public function settingsForm(array $form, FormStateInterface $form_state) {
$element = parent::settingsForm($form, $form_state);
$element['preview_image_style'] = [
'#title' => $this->t('Preview image style'),
'#type' => 'select',
'#options' => image_style_options(FALSE),
'#empty_option' => '<' . $this->t('no preview') . '>',
'#default_value' => $this->getSetting('preview_image_style'),
'#description' => $this->t('The preview image will be shown while editing the content.'),
'#weight' => 15,
];
return $element;
}
/**
* {@inheritdoc}
*/
public function settingsSummary() {
$summary = parent::settingsSummary();
$image_styles = image_style_options(FALSE);
// Unset possible 'No defined styles' option.
unset($image_styles['']);
// Styles could be lost because of enabled/disabled modules that defines
// their styles in code.
$image_style_setting = $this->getSetting('preview_image_style');
if (isset($image_styles[$image_style_setting])) {
$preview_image_style = $this->t('Preview image style: @style', [
'@style' => $image_styles[$image_style_setting],
]);
}
else {
$preview_image_style = $this->t('No preview');
}
array_unshift($summary, $preview_image_style);
return $summary;
}
/**
* Overrides \Drupal\file\Plugin\Field\FieldWidget\FileWidget::formMultipleElements().
*
* Special handling for draggable multiple widgets and 'add more' button.
*/
protected function formMultipleElements(FieldItemListInterface $items, array &$form, FormStateInterface $form_state) {
$elements = parent::formMultipleElements($items, $form, $form_state);
$cardinality = $this->fieldDefinition
->getFieldStorageDefinition()
->getCardinality();
$file_upload_help = [
'#theme' => 'file_upload_help',
'#description' => '',
'#upload_validators' => $elements[0]['#upload_validators'],
'#cardinality' => $cardinality,
];
if ($cardinality == 1) {
// If there's only one field, return it as delta 0.
if (empty($elements[0]['#default_value']['fids'])) {
$file_upload_help['#description'] = $this->getFilteredDescription();
$elements[0]['#description'] = \Drupal::service('renderer')->renderInIsolation($file_upload_help);
}
}
else {
$elements['#file_upload_description'] = $file_upload_help;
}
return $elements;
}
/**
* {@inheritdoc}
*/
public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) {
$element = parent::formElement($items, $delta, $element, $form, $form_state);
$field_settings = $this->getFieldSettings();
// Add image validation.
$element['#upload_validators']['FileIsImage'] = [];
// Add upload dimensions validation.
if ($field_settings['max_resolution'] || $field_settings['min_resolution']) {
$element['#upload_validators']['FileImageDimensions'] = [
'maxDimensions' => $field_settings['max_resolution'],
'minDimensions' => $field_settings['min_resolution'],
];
}
$extensions = $field_settings['file_extensions'];
$supported_extensions = $this->imageFactory
->getSupportedExtensions();
// If using custom extension validation, ensure that the extensions are
// supported by the current image toolkit. Otherwise, validate against all
// toolkit supported extensions.
$extensions = !empty($extensions) ? array_intersect(explode(' ', $extensions), $supported_extensions) : $supported_extensions;
$element['#upload_validators']['FileExtension']['extensions'] = implode(' ', $extensions);
// Add mobile device image capture acceptance.
$element['#accept'] = 'image/*';
// Add properties needed by process() method.
$element['#preview_image_style'] = $this->getSetting('preview_image_style');
$element['#title_field'] = $field_settings['title_field'];
$element['#title_field_required'] = $field_settings['title_field_required'];
$element['#alt_field'] = $field_settings['alt_field'];
$element['#alt_field_required'] = $field_settings['alt_field_required'];
// Default image.
$default_image = $field_settings['default_image'];
if (empty($default_image['uuid'])) {
$default_image = $this->fieldDefinition
->getFieldStorageDefinition()
->getSetting('default_image');
}
// Convert the stored UUID into a file ID.
if (!empty($default_image['uuid']) && ($entity = \Drupal::service('entity.repository')->loadEntityByUuid('file', $default_image['uuid']))) {
$default_image['fid'] = $entity->id();
}
$element['#default_image'] = !empty($default_image['fid']) ? $default_image : [];
return $element;
}
/**
* Form API callback: Processes an image_image field element.
*
* Expands the image_image type to include the alt and title fields.
*
* This method is assigned as a #process callback in formElement() method.
*/
public static function process($element, FormStateInterface $form_state, $form) {
$item = $element['#value'];
$item['fids'] = $element['fids']['#value'];
$element['#theme'] = 'image_widget';
// Add the image preview.
if (!empty($element['#files']) && $element['#preview_image_style']) {
$file = reset($element['#files']);
$variables = [
'style_name' => $element['#preview_image_style'],
'uri' => $file->getFileUri(),
];
$dimension_key = $variables['uri'] . '.image_preview_dimensions';
// Determine image dimensions.
if (isset($element['#value']['width']) && isset($element['#value']['height'])) {
$variables['width'] = $element['#value']['width'];
$variables['height'] = $element['#value']['height'];
}
elseif ($form_state->has($dimension_key)) {
$variables += $form_state->get($dimension_key);
}
else {
$image = \Drupal::service('image.factory')->get($file->getFileUri());
if ($image->isValid()) {
$variables['width'] = $image->getWidth();
$variables['height'] = $image->getHeight();
}
else {
$variables['width'] = $variables['height'] = NULL;
}
}
$element['preview'] = [
'#weight' => -10,
'#theme' => 'image_style',
'#width' => $variables['width'],
'#height' => $variables['height'],
'#style_name' => $variables['style_name'],
'#uri' => $variables['uri'],
];
// Store the dimensions in the form so the file doesn't have to be
// accessed again. This is important for remote files.
$form_state->set($dimension_key, [
'width' => $variables['width'],
'height' => $variables['height'],
]);
}
elseif (!empty($element['#default_image'])) {
$default_image = $element['#default_image'];
$file = File::load($default_image['fid']);
if (!empty($file)) {
$element['preview'] = [
'#weight' => -10,
'#theme' => 'image_style',
'#width' => $default_image['width'],
'#height' => $default_image['height'],
'#style_name' => $element['#preview_image_style'],
'#uri' => $file->getFileUri(),
];
}
}
// Add the additional alt and title fields.
$element['alt'] = [
'#title' => new TranslatableMarkup('Alternative text'),
'#type' => 'textfield',
'#default_value' => $item['alt'] ?? '',
'#description' => new TranslatableMarkup('Short description of the image used by screen readers and displayed when the image is not loaded. This is important for accessibility.'),
// @see https://www.drupal.org/node/465106#alt-text
'#maxlength' => 512,
'#weight' => -12,
'#access' => (bool) $item['fids'] && $element['#alt_field'],
'#required' => $element['#alt_field_required'],
'#element_validate' => $element['#alt_field_required'] == 1 ? [
[
static::class,
'validateRequiredFields',
],
] : [],
];
$element['title'] = [
'#type' => 'textfield',
'#title' => new TranslatableMarkup('Title'),
'#default_value' => $item['title'] ?? '',
'#description' => new TranslatableMarkup('The title is used as a tool tip when the user hovers the mouse over the image.'),
'#maxlength' => 1024,
'#weight' => -11,
'#access' => (bool) $item['fids'] && $element['#title_field'],
'#required' => $element['#title_field_required'],
'#element_validate' => $element['#title_field_required'] == 1 ? [
[
static::class,
'validateRequiredFields',
],
] : [],
];
return parent::process($element, $form_state, $form);
}
/**
* Validate callback for alt and title field, if the user wants them required.
*
* This is separated in a validate function instead of a #required flag to
* avoid being validated on the process callback.
*/
public static function validateRequiredFields($element, FormStateInterface $form_state) {
// Only do validation if the function is triggered from other places than
// the image process form.
$triggering_element = $form_state->getTriggeringElement();
if (!empty($triggering_element['#submit']) && in_array('file_managed_file_submit', $triggering_element['#submit'], TRUE)) {
$form_state->setLimitValidationErrors([]);
}
}
/**
* {@inheritdoc}
*/
public function calculateDependencies() {
$dependencies = parent::calculateDependencies();
$style_id = $this->getSetting('preview_image_style');
/** @var \Drupal\image\ImageStyleInterface $style */
if ($style_id && ($style = ImageStyle::load($style_id))) {
// If this widget uses a valid image style to display the preview of the
// uploaded image, add that image style configuration entity as dependency
// of this widget.
$dependencies[$style->getConfigDependencyKey()][] = $style->getConfigDependencyName();
}
return $dependencies;
}
/**
* {@inheritdoc}
*/
public function onDependencyRemoval(array $dependencies) {
$changed = parent::onDependencyRemoval($dependencies);
$style_id = $this->getSetting('preview_image_style');
/** @var \Drupal\image\ImageStyleInterface $style */
if ($style_id && ($style = ImageStyle::load($style_id))) {
if (!empty($dependencies[$style->getConfigDependencyKey()][$style->getConfigDependencyName()])) {
/** @var \Drupal\image\ImageStyleStorageInterface $storage */
$storage = \Drupal::entityTypeManager()->getStorage($style->getEntityTypeId());
$replacement_id = $storage->getReplacementId($style_id);
// If a valid replacement has been provided in the storage, replace the
// preview image style with the replacement.
if ($replacement_id && ImageStyle::load($replacement_id)) {
$this->setSetting('preview_image_style', $replacement_id);
}
else {
$this->setSetting('preview_image_style', '');
}
// Signal that the formatter plugin settings were updated.
$changed = TRUE;
}
}
return $changed;
}
}
Members
Title Sort descending | Modifiers | Object type | Summary | Overriden Title | Overrides |
---|---|---|---|---|---|
FileWidget::$elementInfo | protected | property | The element info manager. | ||
FileWidget::create | public static | function | Creates an instance of the plugin. | Overrides WidgetBase::create | |
FileWidget::extractFormValues | public | function | Extracts field values from submitted form values. | Overrides WidgetBase::extractFormValues | |
FileWidget::flagErrors | public | function | Reports field-level validation errors against actual form elements. | Overrides WidgetBase::flagErrors | |
FileWidget::getDescriptionFromElement | protected static | function | Retrieves the file description from a field element. | ||
FileWidget::massageFormValues | public | function | Massages the form values into the format expected for field values. | Overrides WidgetBase::massageFormValues | |
FileWidget::processMultiple | public static | function | Form API callback: Processes a group of file_generic field elements. | ||
FileWidget::submit | public static | function | Form submission handler for upload/remove button of formElement(). | ||
FileWidget::validateMultipleCount | public static | function | Validates the number of uploaded files. | ||
FileWidget::value | public static | function | Form API callback. Retrieves the value for the file_generic field element. | ||
ImageWidget::$imageFactory | protected | property | The image factory service. | ||
ImageWidget::calculateDependencies | public | function | Calculates dependencies for the configured plugin. | Overrides PluginSettingsBase::calculateDependencies | |
ImageWidget::defaultSettings | public static | function | Defines the default settings for this plugin. | Overrides FileWidget::defaultSettings | |
ImageWidget::formElement | public | function | Returns the form for a single field widget. | Overrides FileWidget::formElement | |
ImageWidget::formMultipleElements | protected | function | Overrides \Drupal\file\Plugin\Field\FieldWidget\FileWidget::formMultipleElements(). | Overrides FileWidget::formMultipleElements | |
ImageWidget::onDependencyRemoval | public | function | Informs the plugin that some configuration it depends on will be deleted. | Overrides PluginSettingsBase::onDependencyRemoval | |
ImageWidget::process | public static | function | Form API callback: Processes an image_image field element. | Overrides FileWidget::process | |
ImageWidget::settingsForm | public | function | Returns a form to configure settings for the widget. | Overrides FileWidget::settingsForm | |
ImageWidget::settingsSummary | public | function | Returns a short summary for the current widget settings. | Overrides FileWidget::settingsSummary | |
ImageWidget::validateRequiredFields | public static | function | Validate callback for alt and title field, if the user wants them required. | ||
ImageWidget::__construct | public | function | Constructs an ImageWidget object. | Overrides FileWidget::__construct | |
PluginInspectionInterface::getPluginDefinition | public | function | Gets the definition of the plugin implementation. | 6 | |
PluginInspectionInterface::getPluginId | public | function | Gets the plugin_id of the plugin instance. | 2 | |
PluginSettingsBase::$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::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 $settings. | ||
PluginSettingsBase::setSetting | public | function | Sets the value of a setting for the plugin. | Overrides PluginSettingsInterface::setSetting | |
PluginSettingsBase::setSettings | public | function | Sets the settings for the plugin. | Overrides PluginSettingsInterface::setSettings | |
PluginSettingsBase::setThirdPartySetting | public | function | Sets the value of a third-party setting. | Overrides ThirdPartySettingsInterface::setThirdPartySetting | |
PluginSettingsBase::unsetThirdPartySetting | public | function | Unsets a third-party setting. | Overrides ThirdPartySettingsInterface::unsetThirdPartySetting | |
WidgetBase::$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::deleteAjax | public static | function | Ajax refresh callback for the "Remove" button. | ||
WidgetBase::deleteSubmit | public static | function | Ajax submit callback for the "Remove" button. | ||
WidgetBase::errorElement | public | function | Assigns a field-level validation error to the right widget sub-element. | Overrides WidgetInterface::errorElement | 8 |
WidgetBase::form | public | function | Creates a form element for a field. | Overrides WidgetBaseInterface::form | 3 |
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::setWidgetState | public static | function | Stores processing information about the widget in $form_state. | Overrides WidgetBaseInterface::setWidgetState |
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