Use CodeGen to reduce boilerplate

[MisterJimson]

Quite a few lines per property are needed currently, and you need to keep Strings of your property names around, which is error prone and not compile time safe.

The below example takes 10 lines to implement 1 property.

class MyModel with PropertyChangeNotifier<String> {
  int _foo = 0;
  int get foo => _foo;

  set foo(int value) {
    _foo = value;
    notifyListeners('foo');
  }

  set bar(int value) {
    _bar = value;
    notifyListeners('bar');
  }
}

Recommended syntax

class MyModel with PropertyChangeNotifier<String> extends $MyModel {

 @PropertyNotifiy
  int _$foo = 0;
}

The idea is that the required code would be generated, creating a public getter and setter of foo in $MyModel. Then, extending $MyModel gives you those properties on MyModel. This reduces the lines of code to 2 per property and removes the property name String.

[MisterJimson]

Actually, the generated $MyModel can extend the PropertyChangeNotifier as an option as well, so you don't need to have both in the class definition.

[martinrybak]

That would be a nice addition! I'm not that familiar with codegen, would you mind making a PR?

[MisterJimson]

I may be able to, I recently started a project very similar to this, but codegen was a mandatory feature for me to reduce lines of code to implement each property. May just move my efforts here instead.