helptreenode.java

具有不同语法高亮的编辑器实例

/*
 * 11/14/2003
 *
 * HelpTreeNode.java - Class used by HelpDialog.  Represents a "node" in the
 *                     Contents tree.
 * Copyright (C) 2003 Robert Futrell
 * [e-mail]
 * www.website.com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or any later version.
 *
 * 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
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
package org.fife.help;

import java.net.URL;


/**
 * Helper class to {@link HelpDialog}; your
 * <code>DefaultMutableTreeNodes</code> need to
 * contain instances of this class when creating a <code>HelpDialog</code>.
 *
 * @author Robert Futrell
 *
 * @version 1.0
 */
public class HelpTreeNode {

	/**
	 * The help page that will be loaded when the user clicks on this node in
	 * the Contents tree.
	 */
	public URL url;

	/**
	 * The text of the node.
	 */
	public String title;


/*****************************************************************************/


	/**
	 * Creates a <code>HelpTreeNode</code> with no URL.  This constructor should
	 * be used for nodes that you do not wish to associate a help page with, such
	 * as expandable ("folder") nodes.
	 *
	 * @param title The text displayed beside this Contents tree node.
	 */
	public HelpTreeNode(String title) {
		this.title = title;
		this.url = null;
	}


/*****************************************************************************/


	/**
	 * Creates a <code>HelpTreeNode</code>.
	 *
	 * @param title The text displayed beside this Contents tree node.
	 * @param url The help page that will be loaded when the user clicks on
	 *        this node.
	 */
	public HelpTreeNode(String title, URL url) {
		this.title = title;
		this.url = url;
	}


/*****************************************************************************/


	/**
	 * Creates a <code>HelpTreeNode</code>.
	 *
	 * @param title The text displayed beside this Contents tree node.
	 * @param urlString The URL path to the help page that will be loaded when
	 *        the user clicks on this node.
	 */
	public HelpTreeNode(String title, String urlString) {
		this.title = title;
		try {
			url = new java.io.File(urlString).toURL();
		} catch (Exception e) {}
		//System.err.println(url);
	}


/*****************************************************************************/


	/**
	 * Returns the title of this node.
	 */
	public String toString() {
		return title;
	}


/*****************************************************************************/

}