Ptidej-v5.2-master/POM Tests/data/ArgoUML_0.28/src/org/argouml/uml/diagram/static_structure/layout/ClassdiagramModelElementFactory.java
// $Id: ClassdiagramModelElementFactory.java 16236 2008-12-03 21:00:08Z tfmorris $
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package org.argouml.uml.diagram.static_structure.layout;

import org.apache.log4j.Logger;
import org.argouml.uml.diagram.layout.LayoutedObject;
import org.argouml.uml.diagram.static_structure.ui.FigComment;
import org.argouml.uml.diagram.static_structure.ui.FigEdgeNote;
import org.argouml.uml.diagram.ui.FigAbstraction;
import org.argouml.uml.diagram.ui.FigAssociation;
import org.argouml.uml.diagram.ui.FigGeneralization;
import org.argouml.uml.diagram.ui.FigNodeModelElement;
import org.tigris.gef.presentation.FigNode;

/** a class to get the proper layouter for a Fig.
 * Currently this deals only with Generalizations and Realizations.
 *
 * @author Markus Klink
 * @stereotype singleton
*/
public class ClassdiagramModelElementFactory
{
    private static final Logger LOG =
	Logger.getLogger(ClassdiagramModelElementFactory.class);

    /**
     * The singleton.
     */
    public static final ClassdiagramModelElementFactory SINGLETON =
	new ClassdiagramModelElementFactory();

    private ClassdiagramModelElementFactory() { }

    /** create layouter object from a Fig.*
     *
     * @param f Object which contains the Fig
     * @return Layouter for the Edge or Classnode or null if none exists.
     */
    public LayoutedObject getInstance(Object f) {
        if (f instanceof FigComment) {
            return (new ClassdiagramNote((FigComment) f));
        } else if (f instanceof FigNodeModelElement) {
            return (new ClassdiagramNode((FigNode) f));
        } else if (f instanceof FigGeneralization) {
            return new ClassdiagramGeneralizationEdge((FigGeneralization) f);
        } else if (f instanceof FigAbstraction) {
            return (new ClassdiagramRealizationEdge((FigAbstraction) f));
        } else if (f instanceof FigAssociation) {
            return (new ClassdiagramAssociationEdge((FigAssociation) f));
        } else if (f instanceof FigEdgeNote) {
            return (new ClassdiagramNoteEdge((FigEdgeNote) f));
        }
        LOG.debug("Do not know how to deal with: " + f.getClass().getName()
                + "\nUsing standard layout");
        return null;
    }
}
