Source Code : force radio behavior on two different composites

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force radio behavior on two different composites

/*
 * Composite example snippet: force radio behavior on two different composites
 *
 * For a list of all SWT example snippets see
 * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
 */
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;

public class Snippet115 {

public static void main (String [] args) {
  Display display = new Display ();
  Shell shell = new Shell (display);
  shell.setLayout (new RowLayout (SWT.VERTICAL));
  Composite c1 = new Composite (shell, SWT.BORDER | SWT.NO_RADIO_GROUP);
  c1.setLayout (new RowLayout ());
  Composite c2 = new Composite (shell, SWT.BORDER | SWT.NO_RADIO_GROUP);
  c2.setLayout (new RowLayout ());
  final Composite [] composites = new Composite [] {c1, c2};
  Listener radioGroup = new Listener () {
    public void handleEvent (Event event) {
      for (int i=0; i<composites.length; i++) {
        Composite composite = composites [i];
        Control [] children = composite.getChildren ();
        for (int j=0; j<children.length; j++) {
          Control child = children [j];
          if (child instanceof Button) {
            Button button = (Button) child;
            if ((button.getStyle () & SWT.RADIO) != 0) button.setSelection (false);
          }
        }
      }
      Button button = (Button) event.widget;
      button.setSelection (true);
    }
  };
  for (int i=0; i<4; i++) {
    Button button = new Button (c1, SWT.RADIO);
    button.setText ("Button " + i);
    button.addListener (SWT.Selection, radioGroup);
  }
  for (int i=0; i<4; i++) {
    Button button = new Button (c2, SWT.RADIO);
    button.setText ("Button " + (i + 4));
    button.addListener (SWT.Selection, radioGroup);
  }
  shell.pack ();
  shell.open ();
  while (!shell.isDisposed()) {
    if (!display.readAndDispatch ()) display.sleep ();
  }
  display.dispose ();
}
}

           
       

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