onMoveCursorBackwardByCharacter property Null safety
The handler for SemanticsAction.moveCursorBackwardByCharacter.
This handler is invoked when the user wants to move the cursor in a text field backward by one character.
TalkBack users can trigger this by pressing the volume down key while the input focus is in a text field.
Implementation
MoveCursorHandler? get onMoveCursorBackwardByCharacter => _onMoveCursorBackwardByCharacter;Implementation
set onMoveCursorBackwardByCharacter(MoveCursorHandler? value) {
assert(value != null);
_addAction(SemanticsAction.moveCursorBackwardByCharacter, (Object? args) {
final bool extendSelection = args! as bool;
value!(extendSelection);
});
_onMoveCursorBackwardByCharacter = value;
}