iconnodetreeexample.java

自制java的swing组件

/* (swing1.1) */
package zb.swing;

import java.util.*;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.plaf.metal.*;

import zb.swing.icons.*;
import zb.swing.renderer.*;

/**
 * @version 1.0 01/12/99
 */
public class IconNodeTreeExample
    extends JFrame {
  public IconNodeTreeExample() {
    super("IconNode TreeExample");

    String[] strs = {
        "swing home", // 0
        "platf", // 1
        "basic.txt", // 2
        "metal.c", // 3
        "metal.java", // 4
        "metal.html", // 5
        "Computer", // 6
        "A:", // 7
        "C:", // 8
        "D:"}; // 9

    IconNode[] nodes = new IconNode[strs.length];
    for (int i = 0; i < strs.length; i++) {
      nodes[i] = new IconNode(strs[i]);
    }
    nodes[0].add(nodes[1]);
    for (int i = 2; i <= 5; i++) {
      nodes[1].add(nodes[i]);
    }
    nodes[0].add(nodes[6]);
    for (int i = 7; i <= 9; i++) {
      nodes[6].add(nodes[i]);

      //
      // set Icon directly
      //
    }
    nodes[0].setIcon(MetalIconFactory.getFileChooserHomeFolderIcon());

    //
    // use JTree default Icon
    //
    // nodes[1]
    // nodes[2]

    //
    // set Icon by user Object
    //
    // nodes[3]
    // nodes[4]
    // nodes[5]

    //
    // set Icon by name
    //
    nodes[6].setIconName("computer");
    nodes[7].setIconName("floppyDrive");
    nodes[8].setIconName("hardDrive");
    nodes[9].setIconName("hardDrive");

    JTree tree = new JTree(nodes[0]);
    tree.putClientProperty("JTree.icons", makeIcons());
    tree.setCellRenderer(new IconNodeRenderer());
    JScrollPane sp = new JScrollPane(tree);
    getContentPane().add(sp, BorderLayout.CENTER);
  }

  private Hashtable makeIcons() {
    Hashtable icons = new Hashtable();
    icons.put("floppyDrive", MetalIconFactory.getTreeFloppyDriveIcon());
    icons.put("hardDrive", MetalIconFactory.getTreeHardDriveIcon());
    icons.put("computer", MetalIconFactory.getTreeComputerIcon());
    icons.put("c", TextIcons.getIcon("c"));
    icons.put("java", TextIcons.getIcon("java"));
    icons.put("html", TextIcons.getIcon("html"));
    return icons;
  }

  public static void main(String args[]) {
    IconNodeTreeExample frame = new IconNodeTreeExample();
    frame.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
        System.exit(0);
      }
    });
    frame.setSize(300, 150);
    frame.setVisible(true);
  }
}