How to communicated between sibling in Flutter? - flutter

Question

So I have 3 tabs HEX , RGB, and HSL as StatefulWidget.
I have these 3 tabs in a Row in a StatelessWidget.
By default, HEX is selected, which I achieved successfully by initialising initState(). What I want to achieve now is that if I tap on any tab, the other two have to automatically go to a deselected state.
I used GestureDetector but it only changes the state of the tab I tapped on. I toggled the styles of all 3 tabs in the setState() function, but I guess the changes don't take place as the other 2 tabs are not built again, only the tab I tapped on is built again. By built I mean createState().
I am a beginner in Flutter, and I have spent a whole day finding solutions to this but to no avail.
I tried rebuilding the parent Row but I am not able to do so. I am trying to find a method by which I can rebuild widgets by key.
Any solution?
EDIT: The code for that section ->
key arrayKey = GlobalKey();
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//++++++++++++++++++++CHIPS++++++++++++++++++++++++++++++++++++++++++++++++
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
class chipMaker extends StatefulWidget {
chipMaker({required this.label}) : key = ObjectKey(label), chipSelect = false;
final String label;
final Key key;
bool chipSelect;
#override
_chipState createState() => _chipState();
}
class _chipState extends State<chipMaker> {
chipMaker get chip => super.widget;
//need to add setState();
#override
Widget build(BuildContext context) {
// TODO: implement build
return GestureDetector(
onTap: () {
//function
},
child: Container(
margin: EdgeInsets.only(left: 8),
padding: EdgeInsets.symmetric(horizontal: 8, vertical: 2),
decoration: BoxDecoration(
border: Border.all(
color: defaultColor,
width: 2,
style: BorderStyle.solid,
),
borderRadius: BorderRadius.all(Radius.circular(4)),
color: chip.chipSelect ? defaultColor : Colors.white,
),
child: Text(
chip.label,
style: TextStyle(
fontSize: 10,
height: 1.2,
color: chip.chipSelect ? Colors.white : defaultColor,
),
),
),
);
}
}
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//++++++++++++++++++++ARRAY++++++++++++++++++++++++++++++++++++++++++++++++
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
class chipArray extends StatelessWidget {
chipArray({Key? arrayKey,}) : super(key: arrayKey);
#override
Widget build(BuildContext context) {
// TODO: implement build
return Row(
children: [
chipMaker(label: 'HEX',),
chipMaker(label: 'RGB',),
chipMaker(label: 'HSL',),
],
);
}
}