Simple demo Spwing application that demonstrates the use of the bidirectional binding, controller constructor parameters, and multiple button handler methods.

This demonstration builds on the SpwingLabelButtonDemo demonstration program, which introduces the concept of Spwing models, controllers, views and the SVWF view description language.

This application add bidirectional model <-> view binding. In this example, the model field textField is bound to the view JTextField element textField. The binding occurs in this SVWF statement:

bind {
    textField.text => "textField" ["evtTextFieldChanged"];
}

By adding this binding, the contexts of the JTextField are initially set to the value from the model, and the model value is modified as the user types in the JTextField. Two buttons are given in the demonstration; one will post a dialog with the current value from the model, and the other will change the model value programmatically (which will be reflected in the view).

This demonstration uses a different mechanism for communicating the model to the controller. Since multiple controller methods need access to the model, it is added as a field of the controller. The Lombok RequiredArgsConstructor constructor is used to add a constructor that takes the model instance, which will automatically be provided by the Spwing framework when the controller is created.

The demonstration also shows multiple button click handlers in the controller, which are linked to the appropriate buttons via naming convention.