/*
Java Swing, 2nd Edition
By Marc Loy, Robert Eckstein, Dave Wood, James Elliott, Brian Cole
ISBN: 0-596-00408-7
Publisher: O'Reilly
*/
// TestTree3.java
//A variation on TestTree that installs custom icons. The icons installed
//will appear on *every* tree.
//
import java.awt.BorderLayout;
import java.util.Hashtable;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JTree;
import javax.swing.UIManager;
import javax.swing.tree.DefaultTreeModel;
public class TestTree3 extends JFrame {
JTree tree;
DefaultTreeModel treeModel;
public TestTree3() {
super("Tree Test Example");
setSize(200, 150);
setDefaultCloseOperation(EXIT_ON_CLOSE);
// Add our own customized tree icons.
UIManager.put("Tree.leafIcon", new ImageIcon("world.gif"));
UIManager.put("Tree.openIcon", new ImageIcon("door.open.gif"));
UIManager.put("Tree.closedIcon", new ImageIcon("door.closed.gif"));
UIManager.put("Tree.expandedIcon", new ImageIcon("unlocked.gif"));
UIManager.put("Tree.collapsedIcon", new ImageIcon("locked.gif"));
}
public void init() {
// Build the hierarchy of containers & objects.
String[] schoolyard = { "School", "Playground", "Parking Lot", "Field" };
String[] mainstreet = { "Grocery", "Shoe Shop", "Five & Dime",
"Post Office" };
String[] highway = { "Gas Station", "Convenience Store" };
String[] housing = { "Victorian_blue", "Faux Colonial",
"Victorian_white" };
String[] housing2 = { "Mission", "Ranch", "Condo" };
Hashtable homeHash = new Hashtable();
homeHash.put("Residential 1", housing);
homeHash.put("Residential 2", housing2);
Hashtable cityHash = new Hashtable();
cityHash.put("School grounds", schoolyard);
cityHash.put("Downtown", mainstreet);
cityHash.put("Highway", highway);
cityHash.put("Housing", homeHash);
Hashtable worldHash = new Hashtable();
worldHash.put("My First VRML World", cityHash);
// Build our tree out of our big hash table.
tree = new JTree(worldHash);
// Pick an angled line style.
tree.putClientProperty("JTree.lineStyle", "Angled");
getContentPane().add(tree, BorderLayout.CENTER);
}
public static void main(String args[]) {
TestTree3 tt = new TestTree3();
tt.init();
tt.setVisible(true);
}
}