File in UI.st

To create a user interface using ModelValueViewContainer from Coad & Nicola:

Make sure that your Model class is a subclass of Model.

• Be sure to send the changed: message to update text views.

Make your View class a subclass of ModelValueViewContainer

• Create a buildView: method to create the View.
• Use makeDisplayBoxOn:for: to create display box views.
• Use makeButton:on:for: to create buttons.
• Use constraintFrame:corner: to layout the views.
• Use addView:in: to compose the views.