This allows us to use HeapFunction all of the way down, allowing us
to remove the Handle usage in after_session_callback for
create_new_child_navigable.
If initial src of an iframe is "about:blank", it does synchronous
navigation that is not supposed to be interleaved by other navigation
or usage of Document.open().
Fixes crashing in navigation on https://twinings.co.uk/
`HTMLIFrameElement::inserted()` does following:
1. Init a new navigable. This step appends a task on session history
traversal queue (SHTQ) that creates a new nested history.
2. Process iframe's attributes
Processing of iframe's attributes might result in synchronous
navigation that fails to get active SHE if SHTQ task that creates
new nested history is not yet completed.
Before this change, a workaround involved forcing the processing of
SHTQ, which was terrible hack because it could occur in the middle of
another SHTQ task.
This change removes the need for "force SHTQ processing" by ensuring
that the processing of iframe's attributes is always executed after
the iframe's navigable nested history has been created.
This URL library ends up being a relatively fundamental base library of
the system, as LibCore depends on LibURL.
This change has two main benefits:
* Moving AK back more towards being an agnostic library that can
be used between the kernel and userspace. URL has never really fit
that description - and is not used in the kernel.
* URL _should_ depend on LibUnicode, as it needs punnycode support.
However, it's not really possible to do this inside of AK as it can't
depend on any external library. This change brings us a little closer
to being able to do that, but unfortunately we aren't there quite
yet, as the code generators depend on LibCore.
Four elements match the "potentially delay the load event" check in the
spec: `<embed>`, `<frame>`, `<iframe>`, and `<object>`. These four are
the same set of elements that are NavigableContainers (or will be once
we implement them) so let's put this logic there.
Note that other things can delay the load event, this is just the name
the spec gives to this particular behaviour.
This is only needed because currently spec doesn't explicitly define
that navigable should have a pointer to associated container and when
this pointer should be set.
The "browsing context container" concept in the HTML spec has been
replaced with "navigable container". Renaming this is the first step of
many towards implementing the new world.
Co-authored-by: Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
2023-04-19 18:26:45 +02:00
Renamed from Userland/Libraries/LibWeb/HTML/BrowsingContextContainer.h (Browse further)
