treeclass.java

eclipse cookbook the source code of the book

package org.cookbook.ch09;

import org.eclipse.swt.*;
import org.eclipse.swt.widgets.*;

public class TreeClass {

    public static void main(String [] args) {
        Display display = new Display();
        Shell shell = new Shell(display);
        shell.setText("Trees");

        final Tree tree = new Tree(shell, SWT.BORDER);
        tree.setSize(290, 290);
        shell.setSize(300, 300);
        
        for(int loopIndex1 = 0; loopIndex1 < 5; loopIndex1++) {
            TreeItem item0 = new TreeItem(tree, 0);
            item0.setText("Level 0 Item " + loopIndex1);
            for(int loopIndex2 = 0; loopIndex2 < 5; loopIndex2++) {
                TreeItem item1 = new TreeItem(item0, 0);
                item1.setText("Level 1 Item " + loopIndex2);
                for(int loopIndex3 = 0; loopIndex3 < 5; loopIndex3++) {
                    TreeItem item2 = new TreeItem(item1, 0);
                    item2.setText("Level 2 Item " + loopIndex3);
                }
            }
        }
        
        shell.open();
        while(!shell.isDisposed()) {
            if(!display.readAndDispatch()) display.sleep();
        }
        display.dispose();
    } 
}