Ptidej-v5.2-master/POM Tests/data/ArgoUML_0.28/src/org/argouml/uml/ui/behavior/state_machines/ActionNewEvent.java
// $Id: ActionNewEvent.java 11531 2006-11-27 17:40:06Z tfmorris $
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// $header$
package org.argouml.uml.ui.behavior.state_machines;

import java.awt.event.ActionEvent;

import org.argouml.kernel.ProjectManager;
import org.argouml.model.Model;
import org.argouml.ui.targetmanager.TargetManager;
import org.argouml.uml.ui.AbstractActionNewModelElement;

/**
 * Abstract action to create new events.
 * @since Dec 15, 2002
 * @author jaap.branderhorst@xs4all.nl
 */
public abstract class ActionNewEvent extends AbstractActionNewModelElement {

    /**
     * The constant defining the role the event to be created plays for its
     * parent. For example, if one wishes to create a trigger event for a
     * transition, this is filled with "trigger". The values are defined in the
     * interface Roles
     */
    public static final String ROLE = "role";

    /**
     *
     *
     */
    public static interface Roles {

        /**
         * The trigger for some transition
         */
        public static final  String TRIGGER = "trigger";

        /**
         * The deferrable event key
         */
        public static final String DEFERRABLE_EVENT = "deferrable-event";

    }
    /**
     * Constructor for ActionNewEvent.
     */
    protected ActionNewEvent() {
        super();
    }

    /**
     * Implementors should create a concrete event like an instance of
     * SignalEvent in this method.
     * @param ns the namespace
     * @return Object
     */
    protected abstract Object createEvent(Object ns);

    /**
     * Creates the event, sets its role and namespace,
     * and navigates towards it.
     *
     * {@inheritDoc}
     */
    public void actionPerformed(ActionEvent e) {
        super.actionPerformed(e);
        Object target = getTarget();
        Object model =
        	ProjectManager.getManager().getCurrentProject().getModel();
        Object ns = Model.getStateMachinesHelper()
        		.findNamespaceForEvent(target, model);
        Object event = createEvent(ns);
        if (getValue(ROLE).equals(Roles.TRIGGER)) {
            Model.getStateMachinesHelper()
                        .setEventAsTrigger(target, event);
        }
        if (getValue(ROLE).equals(Roles.DEFERRABLE_EVENT)) {
            Model.getStateMachinesHelper()
                        .addDeferrableEvent(target, event);
        }
        TargetManager.getInstance().setTarget(event);
    }

    /**
     * @param role the role the event plays
     * @param t the transition or state to get the event for
     * @return the event
     */
    public static Object getAction(String role, Object t) {
        if (role.equals(Roles.TRIGGER)) {
            return Model.getFacade().getTrigger(t);
        }
        return null;
    }
}
