Java 双击FileTreeModel中的文件
我熟悉Java,但不熟悉SwingAPI。在谷歌搜索了一段时间后,到目前为止,我的程序运行良好。现在我想要的是,双击树中的任何文件,下面是要执行的函数 有人能建议我如何添加一个侦听器来理解双击事件吗?举个例子会很有帮助Java 双击FileTreeModel中的文件,java,swing,Java,Swing,我熟悉Java,但不熟悉SwingAPI。在谷歌搜索了一段时间后,到目前为止,我的程序运行良好。现在我想要的是,双击树中的任何文件,下面是要执行的函数 有人能建议我如何添加一个侦听器来理解双击事件吗?举个例子会很有帮助 public boolean getSomeData(String fileName){ //I will make JDBC call here } 我的工作计划如下: /*http://www.chka.de/swing/tree/FileTreeModel.h
public boolean getSomeData(String fileName){
//I will make JDBC call here
}
我的工作计划如下:
/*http://www.chka.de/swing/tree/FileTreeModel.html
*/
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.tree.TreeModel;
import javax.swing.tree.TreePath;
import javax.swing.event.TreeModelListener;
import javax.swing.event.TreeModelEvent;
import javax.swing.event.EventListenerList;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.List;
import java.util.ArrayList;
import java.util.Map;
import java.util.HashMap;
import java.io.File;
import java.io.Serializable;
import java.io.ObjectOutputStream;
import java.io.ObjectInputStream;
public class FileTreeModel
implements TreeModel, Serializable, Cloneable
{
protected EventListenerList listeners;
private static final Object LEAF = new Serializable() { };
private Map map;
private File root;
public FileTreeModel(File root)
{
this.root = root;
if (!root.isDirectory())
map.put(root, LEAF);
this.listeners = new EventListenerList();
this.map = new HashMap();
}
public Object getRoot()
{
return root;
}
public boolean isLeaf(Object node)
{
return map.get(node) == LEAF;
}
public int getChildCount(Object node)
{
List children = children(node);
if (children == null)
return 0;
return children.size();
}
public Object getChild(Object parent, int index)
{
return children(parent).get(index);
}
public int getIndexOfChild(Object parent, Object child)
{
return children(parent).indexOf(child);
}
protected List children(Object node)
{
File f = (File)node;
Object value = map.get(f);
if (value == LEAF)
return null;
List children = (List)value;
if (children == null)
{
File[] c = f.listFiles();
if (c != null)
{
children = new ArrayList(c.length);
for (int len = c.length, i = 0; i < len; i++)
{
children.add(c[i]);
if (!c[i].isDirectory())
map.put(c[i], LEAF);
}
}
else
children = new ArrayList(0);
map.put(f, children);
}
return children;
}
public void valueForPathChanged(TreePath path, Object value)
{
}
public void addTreeModelListener(TreeModelListener l)
{
listeners.add(TreeModelListener.class, l);
}
public void removeTreeModelListener(TreeModelListener l)
{
listeners.remove(TreeModelListener.class, l);
}
public Object clone()
{
try
{
FileTreeModel clone = (FileTreeModel)super.clone();
clone.listeners = new EventListenerList();
clone.map = new HashMap(map);
return clone;
}
catch (CloneNotSupportedException e)
{
throw new InternalError();
}
}
public static void main(String[] args)
{
if (args.length != 1)
{
System.err.println("Usage: java FileTreeModel path");
System.exit(1);
}
File root = new File(args[0]);
if (!root.exists())
{
System.err.println(root+ ": No such file or directory");
System.exit(2);
}
JTree tree = new JTree(new FileTreeModel(root));
JFrame f = new JFrame(root.toString());
f.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
});
f.getContentPane().add(new JScrollPane(tree));
f.pack();
f.setVisible(true);
}
}
/*http://www.chka.de/swing/tree/FileTreeModel.html
*/
导入javax.swing.JFrame;
导入javax.swing.JScrollPane;
导入javax.swing.JTree;
导入javax.swing.tree.TreeModel;
导入javax.swing.tree.TreePath;
导入javax.swing.event.TreeModelListener;
导入javax.swing.event.treemodelent;
导入javax.swing.event.EventListenerList;
导入java.awt.event.WindowAdapter;
导入java.awt.event.WindowEvent;
导入java.util.List;
导入java.util.ArrayList;
导入java.util.Map;
导入java.util.HashMap;
导入java.io.File;
导入java.io.Serializable;
导入java.io.ObjectOutputStream;
导入java.io.ObjectInputStream;
公共类FileTreeModel
实现TreeModel、可序列化、可克隆
{
受保护的EventListenerList侦听器;
private static final Object LEAF=new Serializable(){};
私人地图;
私有文件根;
公共文件树模型(文件根)
{
this.root=根;
如果(!root.isDirectory())
地图。放置(根、叶);
this.listeners=新的EventListenerList();
this.map=新的HashMap();
}
公共对象getRoot()
{
返回根;
}
公共布尔isLeaf(对象节点)
{
返回map.get(node)=LEAF;
}
public int getChildCount(对象节点)
{
列表子节点=子节点;
if(children==null)
返回0;
返回children.size();
}
公共对象getChild(对象父对象,int索引)
{
返回子项(父项).get(索引);
}
public int getIndexOfChild(对象父对象、对象子对象)
{
返回子项(父项)。索引(子项);
}
受保护的列表子对象(对象节点)
{
文件f=(文件)节点;
对象值=map.get(f);
如果(值==叶)
返回null;
列表子项=(列表)值;
if(children==null)
{
文件[]c=f.listFiles();
如果(c!=null)
{
children=新数组列表(c.长度);
for(int len=c.length,i=0;i
我认为您应该添加MouseListener
并实现mousePressed
方法
MouseListener ml = new MouseAdapter() {
public void mousePressed(MouseEvent e) {
if(e.getClickCount() == 2) {
getSomeData(...);
}
}
};
tree.addMouseListener(ml);
这有用吗@sanbhat让我不用这么做;)。。。阿加纳斯在书中提出;更多