protected function getData(ContextInterface $context)
{
/** @var \Drupal\Core\TypedData\ComplexDataInterface $base */
$base = $context->getContextValue();
$name = $this->getPluginDefinition()['property_name'];
$data = $base->get($name);
// @todo add configuration to get N instead of first.
if ($data instanceof ListInterface) {
$data = $data->first();
}
if ($data instanceof DataReferenceInterface) {
$data = $data->getTarget();
}
return $data;
}
/**
* Convert a property to a context.
*
* This method will respect the value of contexts as well, so if a context
* object is pass that contains a value, the appropriate value will be
* extracted and injected into the resulting context object if available.
*
* @param string $property_name
* The name of the property.
* @param \Drupal\Core\TypedData\ListDataDefinitionInterface $property
* The property object data definition.
* @param \Drupal\Core\Plugin\Context\ContextInterface $context
* The context from which we will extract values if available.
*
* @return \Drupal\Core\Plugin\Context\Context
* A context object that represents the definition & value of the property.
*/
public function getContextFromProperty($property_name, ListDataDefinitionInterface $property, ContextInterface $context)
{
$value = NULL;
if ($context->hasContextValue()) {
$value = $this->getFirstApplicableTypeResolver($property)->getValueFromProperty($context->getContextValue()->{$property_name});
}
$context_definition = new ContextDefinition($this->getDataTypeFromProperty($property));
return new Context($context_definition, $value);
}
