React to changes to a child item.
Note that this is invoked before any changes are applied.
Parameters
$delta:
The delta of the item which is changed.
File
- drupal/core/lib/Drupal/Core/TypedData/ListInterface.php, line 49
- Contains \Drupal\Core\TypedData\ListInterface.
Class
- ListInterface
- Interface for a list of typed data.
Namespace
Drupal\Core\TypedData
Code
public function onChange($delta);