Source Code : Simple Tree

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Simple Tree

/******************************************************************************
 * All Right Reserved. 
 * Copyright (c) 1998, 2004 Jackwind Li Guojie
 * 
 * Created on Mar 10, 2004 8:08:56 PM by JACK
 * $Id$
 * 
 *****************************************************************************/



import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeItem;

public class SWTSimpleTree {
  Display display = new Display();
  Shell shell = new Shell(display);
  
  Tree tree;

  public SWTSimpleTree() {
    shell.setLayout(new GridLayout());
    
    tree = new Tree(shell, SWT.BORDER);
    
    tree.setLayoutData(new GridData(GridData.FILL_BOTH));
    
    TreeItem item = new TreeItem(tree, SWT.NULL);
    item.setText("ITEM");
    
    TreeItem item2 = new TreeItem(item, SWT.NULL);
    item2.setText("ITEM2");
    
    TreeItem item3 = new TreeItem(item2, SWT.NULL);
    item3.setText("ITEM3");
    
    System.out.println("item: " + item.getParent() + ", " + item.getParentItem());
    System.out.println("item2: " + item2.getParent() + ", " + item2.getParentItem());
    
    System.out.println(tree.getItemCount());
    System.out.println(tree.getItems().length);
    
    shell.setSize(300, 200);
    shell.open();
    //textUser.forceFocus();

    // Set up the event loop.
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        // If no more entries in event queue
        display.sleep();
      }
    }

    display.dispose();
  }

  private void init() {

  }

  public static void main(String[] args) {
    new SWTSimpleTree();
  }
}



           
       

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