求 Java实现资源管理器或与之相关的程序

http://sunfruit.blogchina.com/985893.html 这个有源代码是一个带有复选框的资源管理器
//复制了一下楼上那分源码，加了个main函数import javax.swing.tree.*;
import javax.swing.filechooser.*;
import javax.swing.event.*;
import java.awt.Cursor;
import java.awt.Component;
import java.awt.Font;
import java.io.*;
import java.awt.*;
import javax.swing.*;
import java.util.*;
import java.awt.event.MouseListener;
import java.awt.event.MouseEvent;/**
*
*
* Title: 系统级树目录
*
*
*
* Description:
*
*
*
* Copyright: Copyright (c) 2004
*
*
*
* Company:
*
*
* @author cuijiang contact [email protected] or [email protected]
* @version 1.0
*/public class AgileSuperJTreeBasic extends JTree implements
TreeExpansionListener, TreeSelectionListener, MouseListener {
protected DefaultTreeModel treeModel; protected FileSystemView fileSystemView; // 建立文件系统视类对象 protected FileNode root; public AgileSuperJTreeBasic() {
Font myFont = new Font("宋体", 11, 12);
fileSystemView = FileSystemView.getFileSystemView();
root = new FileNode(fileSystemView.getRoots()[0]);
root.explore();
treeModel = new DefaultTreeModel(root);
this.setModel(treeModel); // 设定树形菜单
this.addTreeExpansionListener(this); // 打开/关闭节点事件
this.addTreeSelectionListener(this); // 选择的事件
this.setCellRenderer(new MyTreeCellRenderer()); // 生成图标
this.setFont(myFont);
this.setRootVisible(true);
this.setRowHeight(18);
this.addMouseListener(this);
} // 图标生成类
protected class MyTreeCellRenderer extends JPanel implements
TreeCellRenderer {
JCheckBox check = new JCheckBox(); BorderLayout borderLayout1 = new BorderLayout(); JLabel label = new JLabel(); public MyTreeCellRenderer() {
this.setLayout(null); this.add(check);
this.add(label);
check.setBackground(UIManager.getColor("Tree.textBackground"));
label.setBackground(UIManager.getColor("Tree.textBackground"));
this.setBackground(UIManager.getColor("Tree.textBackground")); } public Dimension getPreferredSize() {
Dimension checkDimension = check.getPreferredSize();
Dimension labelDimension = label.getPreferredSize();
return new Dimension(
checkDimension.width + labelDimension.width,
(checkDimension.height < labelDimension.height ? labelDimension.height
: checkDimension.height));
} public Component getTreeCellRendererComponent(JTree tree, Object value,
boolean sel, boolean expanded, boolean leaf, int row,
boolean hasFocus) {
String stringValue = tree.convertValueToText(value, sel, expanded,
leaf, row, hasFocus);
setEnabled(tree.isEnabled());
label.setFont(tree.getFont());
check.setSelected(((FileNode) value).isSelected());
// 设置图标为系统的文件类型图标
FileSystemView fileSystemView = FileSystemView.getFileSystemView();
label.setIcon(fileSystemView.getSystemIcon(((FileNode) value)
.getFile()));
label.setText(stringValue);
return this;
} public void doLayout() {
Dimension checkDimension = check.getPreferredSize();
Dimension labelDimension = label.getPreferredSize();
int checkY = 0;
int labelY = 0;
if (checkDimension.height > labelDimension.height) {
labelY = (checkDimension.height - labelDimension.height) / 2;
} else {
checkY = (labelDimension.height - checkDimension.height) / 2;
}
check.setLocation(0, checkY);
check.setBounds(0, checkY, checkDimension.width,
checkDimension.height);
label.setLocation(checkDimension.width, labelY);
label.setBounds(checkDimension.width, labelY, labelDimension.width,
labelDimension.height);
} } // 节点张开事件
public void treeExpanded(TreeExpansionEvent event) {
// 判断是否是叶节点
// if (this.getLastSelectedPathComponent() == null) {
// System.out.println("ok");
// return;
// }
setCursor(new Cursor(Cursor.WAIT_CURSOR));
TreePath path = event.getPath();
// System.out.println(path.toString());
FileNode node = (FileNode) path.getLastPathComponent();
node.explore();
treeModel.nodeStructureChanged(node);
this.setCursor(new Cursor(Cursor.DEFAULT_CURSOR)); } // 节点闭合事件
public void treeCollapsed(TreeExpansionEvent event) { }
// 文件节点类
protected class FileNode extends DefaultMutableTreeNode { private boolean isSelected = false; private boolean explored = false; public FileNode(File file) {
this(file, false);
} public FileNode(File file, boolean bool) {
super(file);
this.isSelected = bool;
} //
public boolean isSelected() {
return isSelected;
} public void setSelected(boolean isSelected) {
this.isSelected = isSelected;
if (children != null) {
Enumeration enums = children.elements();
while (enums.hasMoreElements()) {
FileNode node = (FileNode) enums.nextElement();
node.setSelected(isSelected);
}
}
} //
public boolean getAllowsChildren() {
return isDirectory();
} public boolean isLeaf() {
return !isDirectory();
} public File getFile() {
return (File) getUserObject();
} public boolean isExplored() {
return explored;
} public void setExplored(boolean b) {
explored = b;
} public boolean isDirectory() {
return getFile().isDirectory();
} public String toString() {
File file = (File) getUserObject();
String filename = file.toString();
int index = filename.lastIndexOf(File.separator);
return (index != -1 && index != filename.length() - 1) ? filename
.substring(index + 1) : filename;
} public void explore() {
if (!isExplored()) {
File file = getFile();
File[] children = file.listFiles();
if (children == null || children.length == 0)
return;
for (int i = 0; i < children.length; ++i) {
File f = children[i];
if (f.isDirectory())
add(new FileNode(children[i], isSelected));
}
explored = true;
}
} } /**
* 选择节点触发的事件继承或是直接引用需要重新写此方法
*
* @param e
*/
public void valueChanged(TreeSelectionEvent e) {
// 文件路径
String sFilePath = "";
Object myobj = this.getLastSelectedPathComponent();
if (myobj != null) {
sFilePath = ((File) (((DefaultMutableTreeNode) (myobj))
.getUserObject())).getPath();
}
// System.out.println(sFilePath);
} /**
* Invoked when the mouse button has been clicked (pressed and released) on
* a component.
*
* @param e
*            MouseEvent
* @todo Implement this java.awt.event.MouseListener method
*/
public void mouseClicked(MouseEvent e) {
int count = e.getClickCount(); if (count != 1) {
// System.out.println(count); } else {
int x = e.getX();
int y = e.getY();
int row = this.getRowForLocation(x, y);
TreePath path = this.getPathForRow(row);
if (path != null) {
FileNode node = (FileNode) path.getLastPathComponent();
boolean isSelected = !(node.isSelected());
node.setSelected(isSelected);
((DefaultTreeModel) this.getModel()).nodeChanged(node);
}
} } /**
* Invoked when a mouse button has been pressed on a component.
*
* @param e
*            MouseEvent
* @todo Implement this java.awt.event.MouseListener method
*/
public void mousePressed(MouseEvent e) {
} /**
* Invoked when a mouse button has been released on a component.
*
* @param e
*            MouseEvent
* @todo Implement this java.awt.event.MouseListener method
*/
public void mouseReleased(MouseEvent e) {
} /**
* Invoked when the mouse enters a component.
*
* @param e
*            MouseEvent
* @todo Implement this java.awt.event.MouseListener method
*/
public void mouseEntered(MouseEvent e) {
} /**
* Invoked when the mouse exits a component.
*
* @param e
*            MouseEvent
* @todo Implement this java.awt.event.MouseListener method
*/
public void mouseExited(MouseEvent e) {
}

public static void main(String args[]){
JFrame f = new JFrame();
f.getContentPane().setLayout(new BorderLayout());
f.getContentPane().add(new AgileSuperJTreeBasic(),BorderLayout.CENTER);
f.setSize(400,300);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setVisible(true);

}
}

调试易

求 Java实现资源管理器或与之相关的程序

解决方案 »

求 Java实现资源管理器 或与之相关的程序

解决方案 »

求 Java实现资源管理器或与之相关的程序