@Override
    protected void onBind() {
        super.onBind();

        registerHandler(getView().getIsEnabledTickBox().addValueChangeHandler(event -> {
            if (event.getValue() != null) {
                onEnabledStateChange(event.getValue());
            }
        }));
    }
The Info sub-tab of UserTabPresenter
stroom-core-client/src/main/java/stroom/security/client/presenter/UserInfoPresenter.java