Emilio Cobos Álvarez f4f4ec30f4
print: Make the firefox printing code able to fail and be re-invoked.
This fixes a set of issues described in Mozilla bug 1662426[1].

In particular, once the print callback fails once (because the printing
operation has been canceled in Gecko / replaced by a newer one, for example) it
can't be re-invoked.

This patch fixes it by properly cancelling the render task if it throws, or if
the print callback is called again while ongoing.

[1]: https://bugzilla.mozilla.org/show_bug.cgi?id=1662426
2020-09-02 22:56:21 +02:00
..
2020-04-14 12:28:14 +02:00
2020-04-14 12:28:14 +02:00
2020-04-14 12:28:14 +02:00