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/* 
 * Spoon - http://spoon.gforge.inria.fr/
 * Copyright (C) 2006 INRIA Futurs 
 * 
 * This software is governed by the CeCILL-C License under French law and
 * abiding by the rules of distribution of free software. You can use, modify 
 * and/or redistribute the software under the terms of the CeCILL-C license as 
 * circulated by CEA, CNRS and INRIA at http://www.cecill.info. 
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT 
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
 * FITNESS FOR A PARTICULAR PURPOSE. See the CeCILL-C License for more details.
 *  
 * The fact that you are presently reading this means that you have had
 * knowledge of the CeCILL-C license and that you accept its terms.
 */

package spoon.support.gui;

import java.util.Stack;

import javax.swing.tree.DefaultMutableTreeNode;

import spoon.reflect.declaration.CtElement;
import spoon.reflect.declaration.CtNamedElement;
import spoon.reflect.reference.CtReference;
import spoon.reflect.visitor.CtScanner;

public class SpoonTreeBuilder extends CtScanner {
	Stack nodes;

	DefaultMutableTreeNode root;

	public SpoonTreeBuilder() {
		super();
		root = new DefaultMutableTreeNode("Spoon Tree Root");
		nodes = new Stack();
		nodes.push(root);
	}

	private void createNode(Object o) {
		DefaultMutableTreeNode node = new DefaultMutableTreeNode(o) {
			private static final long serialVersionUID = 1L;

			@Override
			public String toString() {
				if (getUserObject() instanceof CtNamedElement) {
					return getUserObject().getClass().getSimpleName()
							+ " - "
							+ ((CtNamedElement) getUserObject())
									.getSimpleName();
				}
				return getUserObject().getClass().getSimpleName() + " - "
						+ getUserObject().toString();
			}
		};
		nodes.peek().add(node);
		nodes.push(node);
	}

	@Override
	public void enter(CtElement element) {
		createNode(element);
		super.enter(element);
	}

	@Override
	public void enterReference(CtReference e) {
		createNode(e);
		super.enterReference(e);
	}

	@Override
	public void exitReference(CtReference e) {
		nodes.pop();
		super.exitReference(e);
	}

	@Override
	public void exit(CtElement element) {
		nodes.pop();
		super.exit(element);
	}

	public DefaultMutableTreeNode getRoot() {
		return root;
	}

}