Preventing going to a Previous Page on Backspace

Vaadin 6 / 7 / 8
1

Hello Team,

I would like to know if there is way where user is taken to previous page on keying backspace. I have tried some thing like the folloiwng using actions, though it is working fine, it is preventing backspace ops even on Fields. Can anyone suggest a way in achieving this.

Following is the snippet that i have built

[code]
mainPanel.addActionHandler(new Handler() {

        Action actionBackSpace = new ShortcutAction("BackSpace key", ShortcutAction.KeyCode.BACKSPACE, null);

        Action actions = new Action { actionBackSpace };

        @Override
        public void handleAction(Action action, Object sender, Object target) {

            if (target instanceof Field<?>) {
                //TODO Do default Action i.e., default action on the fields like TextField, TextArea etc
            } else {
                //DO nothing
            }
        }

        @Override
        public Action getActions(Object target, Object sender) {

            return actions;
        }
    });

[/code]I would really appreciate if I can get any help regarding the same.

Thanks,
Krishna