求一个java实现的资源管理器的源码,类似windows的树状结构.谢谢
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光是写界面。就写到你头疼死了。更不用说功能。
嘿嘿,能写,就是比较懒,本着不重复别人劳动的精神,来求一下!
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.io.File;
import java.io.IOException; import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.event.TreeExpansionEvent;
import javax.swing.event.TreeExpansionListener;
import javax.swing.filechooser.FileSystemView;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreePath;
import javax.swing.tree.TreeSelectionModel; public class FileTree extends JDialog {
private JLabel path_ = new JLabel(" ");
private JTree tree_;
private static String filepath; public FileTree() {
init();
}
private void init() {
JPanel labelPanel = new JPanel(new FlowLayout(FlowLayout.LEFT));
labelPanel.setSize(300, 40);
JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT));
JLabel current = new JLabel("Current Selection");
labelPanel.setLayout(new BorderLayout());
labelPanel.add(current, BorderLayout.NORTH);
labelPanel.add(path_, BorderLayout.SOUTH); File[] roots = (new PFileSystemView()).getRoots();
FileNode nod = new FileNode (roots[0]);
nod.explore();
tree_ = new JTree(new DefaultTreeModel(nod));
tree_.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION); JScrollPane sp = new JScrollPane(tree_);
sp.setBorder(BorderFactory.createEtchedBorder(Color.white, new Color(148, 145, 140))); labelPanel.setBorder(BorderFactory.createEmptyBorder(0, 19, 0, 0));
JButton buttonOK = new JButton("OK");
buttonOK.setPreferredSize(new Dimension(70, 25));
JButton buttonCanel = new JButton("Canel");
buttonCanel.setPreferredSize(new Dimension(70, 25));
buttonPanel.add(buttonOK);
buttonPanel.add(buttonCanel);//canel action
buttonCanel.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
//ok action
buttonOK.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.err.println(filepath);
}
});
tree_.setShowsRootHandles(true);
tree_.addTreeExpansionListener(new TreeExpansionListener() {
public void treeCollapsed(TreeExpansionEvent e) { }
public void treeExpanded (TreeExpansionEvent e) {
TreePath path = e.getPath();
FileNode node = (FileNode)path.getLastPathComponent();
if (!node.isExplored()) {
DefaultTreeModel model = (
(DefaultTreeModel) tree_.getModel());
node.explore();
model.nodeStructureChanged(node);
}
}
});
tree_.addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent e) {
JTree tree = (JTree)e.getSource();
int row = tree.getRowForLocation(e.getX(), e.getY());
if (row == -1) {
return;
}
TreePath path = tree.getPathForRow(row);
if (path == null) {
return;
}
FileNode node = (FileNode)path.getLastPathComponent();
if (node == null) {
return;
}
filepath = node.getString();
path_.setText(filepath);
}
});
getContentPane().add(sp, BorderLayout.CENTER);
getContentPane().add(labelPanel, BorderLayout.NORTH);
getContentPane().add(buttonPanel, BorderLayout.SOUTH);
setSize(350, 400);
this.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
this.setTitle("File Tree");
}
class FileNode extends DefaultMutableTreeNode {
private boolean explored_ = false; public FileNode(File file) {
setUserObject (file);
}
public boolean getAllowChildren() {
return isDirectory();
}
public boolean isLeaf() {
return !isDirectory();
} public File getFile() {
return (File)getUserObject();
}
public boolean isExplored() {
return explored_;
}
public boolean isDirectory() {
File file = getFile();
return file.isDirectory();
}
public String toString() {
File file = getFile ();
String filename = file.toString();
int index = filename.lastIndexOf("\\");
return (index != -1 && index != filename.length() - 1) ?
filename.substring(index + 1) :
filename;
}
public String getString() {
File file = getFile ();
String filename = file.getAbsolutePath();
return filename;
}
public void explore() {
if (!isDirectory()) {
return;
}
if (!isExplored()) {
File file = getFile ();
File [] children = file.listFiles();
for (int i = 0; i < children.length; ++i) {
if (children[i].isDirectory()) {
add(new FileNode (children[i]));
}
}
explored_ = true;
}
}
} class PFileSystemView extends FileSystemView {
public File createNewFolder(File containingDir) throws IOException {
return null;
}
}
public static void main(String[] args) {
(new FileTree()).show(true);
}
}
JTree JLabel JList
..too big..