Comment 22 for bug 739812

So according to Sam, our resident Xorg expert, the only way to fix this is to have Onboard set itself as a transient of the Dash window, allowing it to then correctly get stacked above the Dash (which, obviously, has the right hints set to stay above other apps).

I'm somewhat sure this will work as we already have Input Method support working (specifically IBus) which happily throws up a GtkWindow above the Dash and allows the user to click on it etc.

I also quickly converted Onboard's gtk-window to say it was type dock, and it stayed above the Dash and could be used to drive search just fine.

There are two ways we could do this, either I have Unity publicise the Dash's xid over D-Bus or as a xproperty on the root window, or Unity itself looks out for the Onboard window and makes it a transient when the Dash shows (and maybe unset's when it hides).

I'm prepared to have a go at the latter, if nothing else than for a test case, though it's obviously flawed in that it would be only useful for Onboard (which, this late in the cycle, might well be acceptable).

Thoughts?