selectionControls property
final
Optional delegate for building the text selection handles.
Historically, this field also controlled the toolbar. This is now handled by contextMenuBuilder instead. However, for backwards compatibility, when selectionControls is set to an object that does not mix in TextSelectionHandleControls, contextMenuBuilder is ignored and the TextSelectionControls.buildToolbar method is used instead.
Implementation
final TextSelectionControls? selectionControls;