extend widget flutter code example

Example 1: extend class flutter

class Class1 {
  String text;
  
  Class1({this.text});
}

class Class2 extends Class1 {
  List<FormControls> form;
  
  Class2({text, this.form}) : super(text: text);
}

Example 2: flutter inhereted widget

class MyInherited extends InheritedWidget {
  const MyInherited({
    Key key,
    @required Widget child,
  }) : super(key: key, child: child);


  static MyInherited of(BuildContext context) {
    return context.dependOnInheritedWidgetOfExactType<MyInherited>();
  }

  //if you have properties, it should look something like:
  // bool updateShouldNotify(MyInherited old) => old.prop !== new.prop;
  
  //if you don't: 
  @override
  bool updateShouldNotify(MyInherited old) => false;
  
}