ActionSetStructuralFeatureMultiplicity.java example

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// $Id: ActionSetStructuralFeatureMultiplicity.java 15773 2008-09-22 23:37:17Z tfmorris $
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package org.argouml.uml.ui.foundation.core;

import org.argouml.model.Model;
import org.argouml.uml.ui.ActionSetMultiplicity;

/**
 * Action to set the multiplicity of a structural feature.
 * @author jaap.branderhorst@xs4all.nl
 * @since Jan 6, 2003
 */
public class ActionSetStructuralFeatureMultiplicity
    extends ActionSetMultiplicity {

    private static final ActionSetStructuralFeatureMultiplicity SINGLETON =
        new ActionSetStructuralFeatureMultiplicity();

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

    /*
     * @see org.argouml.uml.ui.ActionSetMultiplicity#setSelectedItem(
     * java.lang.Object, java.lang.Object)
     */
    public void setSelectedItem(Object item, Object target) {
        if (target != null
                && Model.getFacade().isAStructuralFeature(target)) {
            if (Model.getFacade().isAMultiplicity(item)) {
                if (!item.equals(Model.getFacade().getMultiplicity(target))) {
                    Model.getCoreHelper().setMultiplicity(target, item);
                }
            } else if (item instanceof String) {
                if (!item.equals(Model.getFacade().toString(
                        Model.getFacade().getMultiplicity(target)))) {
                    Model.getCoreHelper().setMultiplicity(
                            target,
                            Model.getDataTypesFactory().createMultiplicity(
                                    (String) item));
                }
            } else {
                Model.getCoreHelper().setMultiplicity(target, null);
            }
        }
    }

    /**
     * @return Returns the sINGLETON.
     */
    public static ActionSetStructuralFeatureMultiplicity getInstance() {
        return SINGLETON;
    }

}