Indeterminate progress bar as popup window

A small indeterminate progress bar. Use like this:

pleaseWait wait = new pleaseWait();

wait.start();

/* some long operation */

wait.stop();

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import org.eclipse.swt.SWT;

import org.eclipse.swt.graphics.Rectangle;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.Monitor;

import org.eclipse.swt.widgets.ProgressBar;

import org.eclipse.swt.widgets.Shell;

public class pleaseWait extends Thread {

        public void run() {

                Display display = new Display();

                Shell shell = new Shell(display, SWT.TITLE | SWT.BORDER | SWT.APPLICATION_MODAL);

                shell.setText("Please wait...");

                ProgressBar bar = new ProgressBar(shell, SWT.INDETERMINATE);

                bar.setBounds(1, 0, 200, 20);

                bar.setMaximum(5);

                bar.setMinimum(0);

                shell.pack();

                Monitor primary = display.getPrimaryMonitor();

                Rectangle bounds = primary.getBounds();

                Rectangle rect = shell.getBounds();

                int x = bounds.x + (bounds.width - rect.width) / 2;

                int y = bounds.y + (bounds.height - rect.height) / 2;

                shell.setLocation(x, y);

                shell.open();

                while (!shell.isDisposed()) {

                        if (!display.readAndDispatch())

                                display.sleep();

                }

        }

}

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