print: Make the firefox printing code able to fail and be re-invoked. #12315
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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
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I added a comment, let me know if you want me to tweak it :) |
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This fixes a set of issues described in Mozilla bug 16624261.
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.