378cddbc41
Otherwise we might end up in the situation where we print something that was not previewed. This is of course bad for the user as he prints something he has not seen. It is also bad for the print spooler as in the case the layout did not describe the amount of pages, we do not know the number of pages available until the update is complete. We now allow changing of printer at any time unless printing is in final stage. If we don't allow this the changing of printer would be blocked until the intial document was written which might take some time. Fixes: 36599750 Test: cts-tradefed run cts-dev -m Print Change-Id: I93e910c02f2a770008b845028f0adf17b3d410e2