Main Portal browser should not be closed without closing the Pop up window.

Hi All,

In a component I have a freely programmed search help .

this search help component is called on the main component but still we are able to close the main component .

How to restrict the main window from being closed ?

I think while creating a window we have the option for setting the window as modal.

but in this case we are not creating the window we are calling another component as window.