Can changeDefaults() be used for nested auto children?

[wallytax]

I have a custom grid class (extending ListGrid) with auto children for buttons in it. I now want to use this grid itself as auto child of a Controller class. When the grid is part of this controller, I want some properties of the buttons different. I was wondering if this can be changed via changeDefaults(). I have a working thing by changing the *Properties, but was wondering if this is the right approach.

isc.defineClass('MyGrid', isc.ListGrid).addProperties({
  createButtonConstructor: 'ToolStripButton',
  createButtonDefaults: {
    title: 'Show',
    click: function() {
      doSomething();
    }
  }
});

isc.defineClass('MyController', isc.TabSet).addProperties({
  gridConstructor: 'MyGrid',
  gridDefaults: {
    init: function() {
      this.createButtonProperties = isc.addProperties({
        click: function() {
          doSomethingElse(); // this is different when the grid is inside a controller, the title remains the same
        }
      }, this.createButtonProperties);
      this.Super('init', arguments);
    }
  }
});

// something like this seems to be impossible
isc.MyController.changeDefaults('gridProperties.createButtonDefaults', {
  ...
});

Any comments on this?

[Isomorphic]

You could create a further subclass of the grid, call changeDefaults on that subclass, then use the subclass as a replacement gridConstructor on your MyController class.