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// This example shows a simple state machine
// without any actions or guards
//
// In the following, status is a state machine,
// and acts like an attribute, whose value is set
// by various events.
//
// Open, Closing, Closed, Opening and HalfOpen are
// the possible values, or states, of status.
//
// buttonOrObstacle, reachBottom and reachTop are
// events. These become generated methods that can
// be called to cause a state change.
//
// To make the state diagram appear in
// UmpleOnline, select 'Options' then choose
// 'GraphViz State Diagram'
class GarageDoor
{
status {
Open { buttonOrObstacle -> Closing; }
Closing {
buttonOrObstacle -> Opening;
reachBottom -> Closed;
}
Closed { buttonOrObstacle -> Opening; }
Opening {
buttonOrObstacle -> HalfOpen;
reachTop -> Open;
}
HalfOpen { buttonOrObstacle -> Opening; }
}
}
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