An interesting restriction

With this event model, if I were to instantiate multiple buttons of this type,

• the same processMouseEvent method would be called
• no matter which of the buttons fired a mouse event.

If I wanted different behavior as a result of the different buttons firing mouse events,

• I would have to write code inside the processMouseEvent method
• to deal with that issue.

(The source-listener event model that I will illustrate later doesn't suffer from this restriction.)