image = CatalogUIPlugin.getDefault().getImageDescriptor(ISharedImages.WARNING_OVR).createImage();
imageRegistry.put(REQUIRED_DECORATION, image);
}
decoration.setImage(image);
decoration.setDescriptionText(localization.requiredField);
decoration.show();
text.addListener(SWT.Modify, new Listener(){
public void handleEvent( Event event ) {
getContainer().updateButtons();