Andreas Kling aae191aa33 LibWeb: Bail from various navigable operations when no active window ...

If we end up in a situation where the navigable no longer has an active
window, we can't perform navigation or many other navigable operations.

These are all ad-hoc, since the navigables spec is basically all written
as if there's always an active window. Unfortunately, the active window
comes from the active document's browsing context, which is a nullable
concept even in the spec, so we do need to deal with null here.

This removes all the locally reproducible crashes when running WPT over
the legacy Japanese encoding directory on my computer.

Yes, this is a bit of a monkey patch, but it should be harmless since
we're (as I understand it) dealing with navigables that are still
hanging around with related tasks queued on them. Once all these tasks
have been completed, the navigables will go away anyway.

2024-10-05 16:24:10 +02:00

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