package org.apache.maven.doxia.module.confluence.parser.list;

/*
 * 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.
 */

import java.util.List;
import java.util.ArrayList;
import java.util.Iterator;

import org.apache.maven.doxia.module.confluence.ConfluenceMarkup;
import org.apache.maven.doxia.module.confluence.Messages;

/**
 * @author <a href="mailto:jason@maven.org">Jason van Zyl</a>
 * @version $Id: TreeComponent.java 638290 2008-03-18 09:45:22Z bentmann $
 */
class TreeComponent {
	private static final String EOL = System.getProperty("line.separator");

	private static final String EMPTY_STRING = "";
	private static final String START_TAG = "- ";

	private List<TreeComponent> children = new ArrayList<TreeComponent>();

	private String text;

	private TreeComponent father;

	private String type;

	public TreeComponent(TreeComponent father, String text, String type) {
		this.text = text;
		this.father = father;
		this.type = type;
	}

	public List<TreeComponent> getChildren() {
		return children;
	}

	public TreeComponent addChildren(String t, String ttype) {
		if (t == null) {
			throw new IllegalArgumentException(
					Messages.ILLEGAL_ARGUMENT_EXCEPTION_MESSAGE);
		}

		TreeComponent ret = new TreeComponent(this, t, ttype);

		children.add(ret);

		return ret;
	}

	public TreeComponent getFather() {
		return father;
	}

	public int getDepth() {
		int ret = 0;

		TreeComponent c = this;

		while ((c = c.getFather()) != null) {
			ret++;
		}

		return ret;
	}

	public String toString() {
		return toString(EMPTY_STRING);
	}

	public String toString(String indent) {
		StringBuffer sb = new StringBuffer();

		if (father != null) {
			sb.append(indent);
			sb.append(START_TAG);
			sb.append(text);
			sb.append(EOL);
		}

		for (Iterator<TreeComponent> i = children.iterator(); i.hasNext();) {
			TreeComponent lc = (TreeComponent) i.next();

			sb.append(lc.toString(indent + ConfluenceMarkup.SPACE
					+ ConfluenceMarkup.SPACE + ConfluenceMarkup.SPACE));
		}

		return sb.toString();
	}

	public String getText() {
		return text;
	}

	public String getType() {
		return type;
	}
}