讀取XML來創建菜單

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最新代碼版本： :1.0

				
						/**
 * 標題：制作菜單
 * 
 * 注：通過XML就可以制作出菜單來
 * 
 * 作者：元杰(夏祥均)
 * 時間：2006.09.28
 */
package yuanjie.myconfig.frame;

import java.awt.event.ActionListener;

import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.w3c.dom.DOMException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

public class CreateMenu 
{
	private String fileName = null;
	private ActionListener actionListener = null;
	private JMenuBar rootMenu = null;
	//構造函數
	public CreateMenu(String fileName, ActionListener action)
	{
		this.fileName = fileName;
		this.actionListener = action;
		this.rootMenu = new JMenuBar();
		init();
	}
	//返回菜單的內容
	public JMenuBar getMenuBar() 
	{
		return rootMenu;
	}
	//初始化菜單
	private void init()
	{
		//讀取XML文檔
		DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
		DocumentBuilder db = null;
		try{
			db = dbf.newDocumentBuilder();
		} catch(ParserConfigurationException pce)
		{
			System.err.println(pce.getMessage());
			System.exit(1);
		}
		//加載XML文檔
		Document doc = null;
		try{
			doc = db.parse(this.fileName);
		} catch(DOMException dom)
		{
			System.err.println(dom.getMessage());
			System.exit(1);
		} catch(Exception ioe)
		{
			System.err.println(ioe.getMessage());
			System.exit(1);
		}
		//開始讀取數據
		Element root = doc.getDocumentElement();
		//開始top的讀取
		NodeList top = root.getElementsByTagName("top");
		
		for (int i = 0; i < top.getLength(); i++)
		{
			Element menu = (Element) top.item(i); 
			//創建頂層菜單
			String menuName = menu.getAttribute("name");
			JMenu topMenu = new JMenu(menuName);
			this.rootMenu.add(topMenu);
			
			NodeList menuChild = menu.getChildNodes();
			for(int j = 1; j < menuChild.getLength(); j += 2)
			{
				//創建次級菜單
				Element child = (Element) menuChild.item(j);
				String nodeName = child.getNodeName();
				if(nodeName.equals("separator"))
				{
					//為分隔線
					topMenu.addSeparator();
				} else if(nodeName.equals("menu"))
				{
					//菜單項
					NodeList n1 = child.getChildNodes();
					//菜單標題
					String str1 = n1.item(0).getNodeValue();
					//添加菜單
					JMenuItem mItem = new JMenuItem(str1);
					topMenu.add(mItem);
					mItem.addActionListener(this.actionListener);
				} else if(nodeName.equals("popup"))
				{
					//彈出菜單項
					String str2 = child.getAttribute("name");
					JMenu popupMenu = new JMenu(str2);
					//添加彈出菜單
					topMenu.add(popupMenu);
					NodeList popup = child.getChildNodes();
					for(int k = 1; k < popup.getLength(); k += 2)
					{
						Element popupChild = (Element) popup.item(k);
						String popupName = popupChild.getNodeName();
						if(popupName.equals("separator"))
						{
							//為分隔線
							popupMenu.addSeparator();
						} else if(popupName.equals("menu"))
						{
							//菜單項
							NodeList n3 = popupChild.getChildNodes();
							String str3 = n3.item(0).getNodeValue();
							JMenuItem pItem = new JMenuItem(str3);
							popupMenu.add(pItem);
							pItem.addActionListener(this.actionListener);
						}
					}
				}
			}
		}
	}
}




來源：http://gforge.osdn.net.cn/snippet/detail.php?type=snippet&id=9
				
		

posted on 2006-11-27 13:48 零一的偉大 閱讀(223) 評論(0)  編輯  收藏