...and clean up afterwards, of course. Additionally to preparing to run
a script, we also prepare to run a callback here. This matches WebIDL's
invoke_callback() / call_user_object_operation() functions, and prevents
a crash in host_make_job_callback() when getting the incumbent settings
object.
Running the following JS no longer crashes after this change:
```js
new Promise((resolve) => {
setTimeout(resolve, 0);
}).then(() => {
return Promise.reject();
});
```
See further discussion/investigation here:
995019647210268246241026922985
Many thanks to Luke for doing the hard work here, tracking this down,
and suggesting the fix!
Co-authored-by: Luke Wilde <lukew@serenityos.org>
This includes punting on the actual file picker implementation all the
way out to the PageClient. It's likely that some of the real details
should be implemented somewhere closer, like the BrowsingContext or the
Page, but we'll get there.
For now, this allows https://copy.sh/v86 to load the emulation of the
preselected images all the way until it hits a call to
URL.createObjectURL.
We parse the arguments that come in, but since we don't yet track
scrollable overflow, we can't do the full "scroll an element into view"
algorithm. For now, we just call out to the PageClient and ask it to
bring the nearest principal box into the visible viewport.
When we have nested flexbox layouts within one another, and the child
context wants to call up to the parent context and ask for help with
dimensioning the child flex container, we now simply do nothing.
As far as I can tell, this works out just fine, since the child flex
container will already be dimensioned by the flex layout algorithm.
Previously, FlexFormattingContext would calculate intrinsic sizes in
both axes simultaneously, despite only one being needed.
This patch reduces the amount of unnecessary work by only calculating
the requested intrinsic size.
After speaking with fantasai at CSSWG about this, it turns out I had
misunderstood intrinsic heights. I originally believed all intrinsic
sizes had to be computed with no influence from the surrounding context.
As it turns out, intrinsic heights *are* influenced by the available
width, since it's needed to determine where lines break.
The APIs for calculating min-content and max-content heights now take
the available width as inputs. This instantly improves layout in many
cases where we'd previously make things way too wide.
This was fairly straightforward, although a small part had to be ad-hoc
since we don't yet load images through Fetch.
With this, we can now see annotation labels on deskto.ps :^)
I've left a FIXME here about populating the events with mouse
coordinates, button states, etc. We also need to verify that the
dispatch order either doesn't matter or at least match other engines.
Inline-level blocks already have the half-leading applied internally,
so by adding it twice, we were offsetting their baseline by the
half-leading of the line.
This fixes an issue where inline-blocks were vertically offset from
the line they're supposed to sit on.
A struct with three raw pointers to other GC'd types is a pretty big
liability, let's just turn this into a Cell itself.
This comes with the additional benefit of being able to capture it in
a lambda effortlessly, without having to create handles for individual
members.
`.split_view(Infra::ASCII_WHITESPACE)` tries to split the string view on
the string "\t\n\f\r " (not any of the individual characters of that
string).
The correct way to split this string views here is
`.split_view_if(Infra::is_ascii_whitespace)`, this is a little
inconsistent with String, so probably should be addressed.
This matches the Infra spec's definition of 'ASCII whitespace', and we
can at last stop using AK::is_ascii_space(), which has a different idea
about what 'whitespace' means.
When an absolutely positioned box has auto insets on both sides of an
axis, it's placed according to the "static position rectangle". This is,
roughly, the rectangle a box would occupy if it were position:static
instead of position:absolute or position:fixed.
This patch implements a rough, but still significantly better,
estimation of such static positions. It gets pretty hairy in the case
where an abspos box has a parent whose children are inline.
This is a big and messy change, and here's the gist:
- AvaliableSpace is now 2x AvailableSize (width and height)
- Layout algorithms are redesigned around the idea of available space
- When doing layout across nested formatting contexts, the parent
context tells the child context how much space is available for the
child's root box in both axes.
- "Available space" replaces "containing block width" in most places.
- The width and height in a box's UsedValues are considered to be
definite after they're assigned to. Marking something as having
definite size is no longer a separate step,
This probably introduces various regressions, but the big win here is
that our layout system now works with available space, just like the
specs are written. Fixing issues will be much easier going forward,
since you don't need to do nearly as much conversion from "spec logic"
to "LibWeb logic" as you previously did.
The HTMLIFrameElement does not create the nested browsing context on
insertion if the document does not have browsing context, which is not
set unless it's the active document.
Previously, in FrameLoader the document was not set as active until
after parsing, which led to iframes without nested browsing contexts,
and crashes.
Fixes#14207
