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/*******************************************************************************
 * Copyright (c) 2000, 2005 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.snippets;

/*
 * Create a virtual table and add 1000 entries to it every 500 ms.
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 * 
 * @since 3.0
 */
import java.util.*;
import org.eclipse.swt.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

public class Snippet151 {

static int[] data = new int[0];

public static void main (String [] args) {
  final Display display = new Display ();
  Shell shell = new Shell (display);
  shell.setLayout(new FillLayout());
  final Table table = new Table(shell, SWT.BORDER | SWT.VIRTUAL);
  table.addListener(SWT.SetData, new Listener() {
    public void handleEvent(Event e) {
      TableItem item = (TableItem)e.item;
      int index = table.indexOf(item);
      item.setText("Item "+data[index]);
    }
  });
  Thread thread = new Thread() {
    public void run() {
      int count = 0;
      Random random = new Random();
      while (count++ < 500) {
        if (table.isDisposed()) return;
        // add 10 random numbers to array and sort
        int grow = 10;
        int[] newData = new int[data.length + grow];
        System.arraycopy(data, 0, newData, 0, data.length);
        int index = data.length;
        data = newData;
        for (int j = 0; j < grow; j++) {
          data[index++] = random.nextInt();
        }
        Arrays.sort(data);
        display.syncExec(new Runnable() {
          public void run() {
            if (table.isDisposed()) return;
            table.setItemCount(data.length);
            table.clearAll();
          }
        });
        try {Thread.sleep(500);} catch (Throwable t) {}
      }
    }
  };
  thread.start();
  shell.open ();
  while (!shell.isDisposed() || thread.isAlive()) {
    if (!display.readAndDispatch ()) display.sleep ();
  }
  display.dispose ();
}
}
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