This interface is able to use to define a action method for entry, exit or a transition in a Statemachine, which is implemented inside any user class.
Use the following pattern:
class MyUserClass {
Some things;
StateAction actionForSomewhat = new StateAction() {
QOverride public int exec(Event ev) {
things.dowithThem();
};
}
....
class AnotherClass {
MyUserClass associateUserClass;
class StateMachine extends StateTop
{
class StateXY extends StateSimple {
{ entry = associateUserClass.actionForSomewhat;
}
}
}
Any class defines the action which uses the context of that class, it is a non-static inner class.
Another class may contain the state machine which uses the action. It associates it via its
StateSimple.entry field.