onSetSelection property Null safety

SetSelectionHandler? onSetSelection
final

The handler for SemanticsAction.setSelection.

This handler is invoked when the user either wants to change the currently selected text in a text field or change the position of the cursor.

TalkBack users can trigger this handler by selecting "Move cursor to beginning/end" or "Select all" from the local context menu.

Implementation

final SetSelectionHandler? onSetSelection