final OverwritePromptDialog overwriteDialog = new OverwritePromptDialog();
final IDialogCallback callback = new IDialogCallback() {
public void cancelPressed() {
event.setMessage( "Cancel" );
EventBusUtil.EVENT_BUS.fireEvent( event );
overwriteDialog.hide();
}
public void okPressed() {
performSave( clipBoard, overwriteDialog.getOverwriteMode() );
}