/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */ 

package org.apache.commons.digester;

import java.util.List;
import java.util.LinkedList;
import java.util.Iterator;

/**
 * Simple class for use in unit tests. A box has an ID, and can have
 * multiple boxes within it.
 */
public class Box {
    private String id;
    
    private List children = new LinkedList();

    public Box() {}
    
    public String getId() {
        return id;
    }
    
    public void setId(String id) {
        this.id = id;
    }
    
    public void addChild(Box child) {
        this.children.add(child);
    }
    
    public List getChildren() {
        return children;
    }
    
    public String toString()
    {
        StringBuffer buf = new StringBuffer();
        buf.append("[Box] id=");
        buf.append(id);
        buf.append(" nchildren=");
        buf.append(children.size());
        
        for(Iterator i = children.iterator(); i.hasNext(); ) {
            Box child = (Box) i.next();
            buf.append("  ");
            buf.append(child.toString());
        }
        return buf.toString();
    }
    
    /**
     * Return a string containing this object's name value, followed by the
     * names of all child objects (and their children etc) in pre-order
     * sequence. Each name is separated by a space from the preceding one.
     */
    public String getIds() {
        StringBuffer buf = new StringBuffer();
        buf.append(this.id);
        for(Iterator i = children.iterator(); i.hasNext(); ) {
            Box child = (Box) i.next();
            buf.append(" ");
            buf.append(child.getIds());
        }
        return buf.toString();
    }
}