Icon Selector : Button « SWT JFace Eclipse « Java

Icon Selector

Icon Selector
 * Copyright (c) 1998, 2004 Jackwind Li Guojie
 * All right reserved. 
 * Created on Jan 5, 2004 2:15:34 PM by JACK
 * $Id$
 * visit: http://www.asprise.com/swt
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.FileDialog;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

public class IconSelector {

  Display display = new Display();
  Shell shell = new Shell(display);

  Label labelIconFile;

  Text textIconFile;
  Button buttonIconBrowse;
  Button buttonSetIcon;
  Image shellIcon;
  Image buttonIcon;
  public IconSelector() {
    // Set up the event loop.
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        // If no more entries in event queue

  private void initializeUI() {
    GridLayout gridLayout = new GridLayout(3, false);

    // Adds components to the first row.
    labelIconFile = new Label(shell, SWT.NULL);
    textIconFile = new Text(shell, SWT.SINGLE | SWT.BORDER);
    GridData gridData = new GridData(GridData.FILL_HORIZONTAL);
    gridData.grabExcessHorizontalSpace = true;

    buttonIconBrowse = new Button(shell, SWT.PUSH);

    // last row.
    gridData = new GridData();
    gridData.horizontalSpan = 3;
    gridData.horizontalAlignment = GridData.CENTER;
    buttonSetIcon = new Button(shell, SWT.PUSH);

    shell.setText("Icon Selector");

    labelIconFile.setText("Select an icon:");

    buttonSetIcon.setText("Set Icon");

    // Register listeners.
    buttonIconBrowse.addSelectionListener(new SelectionAdapter() {
      public void widgetSelected(SelectionEvent e) {
        FileDialog dialog = new FileDialog(shell, SWT.OPEN);
        String file = dialog.open();
        if (file != null) {

    buttonSetIcon.addSelectionListener(new SelectionAdapter() {
      public void widgetSelected(SelectionEvent e) {
        if(shellIcon != null) 
        try {
          shellIcon = new Image(display, textIconFile.getText());
        }catch(Exception ex) {
  public static void main(String[] args) {
    IconSelector iconSelector = new IconSelector();

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