SC.ask() and SC.confirm() behave like modal window

[alina.frey]

How do I make SC.ask() or SC.confirm() windows behave like a modal window?

[Isomorphic]

Nothing is required, since they already do behave as modal windows.

If there is some way in which you think they don't behave like modal windows, please be specific.

[alina.frey]

I was looking for a way to set opacity, just like we can do with Window objects.

myWindow.setShowModalMask(true);
myWindow.setModalMaskOpacity(25);

Not sure how to do that with SC.ask() or SC.confirm().
I'm using theme Stratus.

[alina.frey]

I found my own answer.

In the entry point class, we can set the default properties for the Dialog class behavior:

Dialog dialogDefaultProperties = new Dialog();
dialogDefaultProperties.setShowModalMask(true);
dialogDefaultProperties.setModalMaskOpacity(25);
Dialog.setDefaultProperties(dialogDefaultProperties);