selection property Null safety
The region of text that is selected, if any.
The caret position is represented by a collapsed selection.
If selection is null, there is no selection and attempts to manipulate the selection will throw.
Implementation
TextSelection? get selection => _selection;
Implementation
set selection(TextSelection? value) {
if (_selection == value) {
return;
}
_selection = value;
_selectionPainter.highlightedRange = value;
markNeedsPaint();
markNeedsSemanticsUpdate();
}