Ptidej-v5.2-master/POM Tests/data/ArgoUML_0.28/src/org/argouml/uml/ui/ActionStateDiagram.java
// $Id: ActionStateDiagram.java 15723 2008-09-16 20:19:50Z mvw $
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// software and its documentation without fee, and without a written
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package org.argouml.uml.ui;

import org.argouml.kernel.Project;
import org.argouml.kernel.ProjectManager;
import org.argouml.model.Model;
import org.argouml.ui.targetmanager.TargetManager;
import org.argouml.uml.diagram.ArgoDiagram;
import org.argouml.uml.diagram.DiagramFactory;
import org.argouml.uml.diagram.state.ui.UMLStateDiagram;

/**
 * Action to create a new statechart diagram.
 */
public class ActionStateDiagram extends ActionNewDiagram {

    /**
     * Constructor.
     */
    public ActionStateDiagram() {
        super("action.state-diagram");
    }

    /*
     * @see org.argouml.uml.ui.ActionNewDiagram#createDiagram()
     */
    protected ArgoDiagram createDiagram(Object namespace) {
        Object target = TargetManager.getInstance().getModelTarget();
        if (Model.getFacade().isAUMLElement(target) 
                && Model.getModelManagementHelper().isReadOnly(target)) {
            target = namespace;
        }
        Object machine = null;
        if (Model.getStateMachinesHelper().isAddingStatemachineAllowed(
              target)) {
            /* The target is a valid context. */
            machine = Model.getStateMachinesFactory().buildStateMachine(target);
        } else if (Model.getFacade().isAStateMachine(target)
                && hasNoDiagramYet(target)) {
            /* This target is a statemachine, 
             * for which no diagram exists yet, 
             * so, let's use it. */
            machine = target;
        } else {
            /* Let's just build a Statemachine, 
             * and put it in a suitable namespace. */
            machine = Model.getStateMachinesFactory().createStateMachine();
            if (Model.getFacade().isANamespace(target)) {
                namespace = target;
            }
            Model.getCoreHelper().setNamespace(machine, namespace);
            Model.getStateMachinesFactory()
                    .buildCompositeStateOnStateMachine(machine);
        }
        
        return DiagramFactory.getInstance().createDiagram(
                DiagramFactory.DiagramType.State,
                Model.getFacade().getNamespace(machine),
                machine);
    }
    
    private boolean hasNoDiagramYet(Object machine) {
        Project p = ProjectManager.getManager().getCurrentProject();
        for (ArgoDiagram d : p.getDiagramList()) {
            if (d instanceof UMLStateDiagram) {
                if (((UMLStateDiagram) d).getStateMachine() == machine) {
                    return false;
                }
            }
        }
        return true;
    }

    /**
     * The UID.
     */
    private static final long serialVersionUID = -5197718695001757808L;

}
