@namespace(uri="flowchart", prefix="flowchart")
package flowchart;

@gmf.diagram(foo="bar")
class Flowchart {
   val Node[*] nodes;
   val Transition[*] transitions;
}

@gmf.node(label="name", label.icon="false")
abstract class Node {
   attr String name;
   ref Transition[*]#source outgoing;
   ref Transition[*]#target incoming;
}

@gmf.link(label="name", source="source", target="target", target.decoration="arrow")
class Transition {
   attr String name;
   ref Node#outgoing source;
   ref Node#incoming target;
}

class Subflow extends Flowchart, Node{
   
}

@gmf.node(figure=
	"org.eclipse.epsilon.eugenia.examples.flowchart.diagram.figures.SquareFigure")
class Action extends Node {
   
}

@gmf.node(figure=
	"org.eclipse.epsilon.eugenia.examples.flowchart.diagram.figures.DiamondFigure")
class Decision extends Node {
   
}

wizard IntroduceAction {

	guard : self.isKindOf(Transition)

	title : 'Introduce an action'

	do {
		var action = new Action;
		var transition = new Transition;
		
		transition.source = action;
		transition.target = self.target;
		
		self.target = action;
		
		Flowchart.all.first.nodes.add(action);
		Flowchart.all.first.transitions.add(transition);
	}
}