Allow Request's Headers to be created with various objects
<!-- Please describe your changes on the following line: -->
While Headers could be constructed correctly with an array or
object (open ended dictionary/MozMap), Request's Headers failed to be
created with non-Headers object (such as array or open ended
dictionary/MozMap).
Before, Request's Headers could be filled with only a Headers object in
Step 28. This has been expanded to accommodate array and open ended
dictionary.
Step 29 empties the Request's Headers list after it had been filled in
Step 28, thus resulting in an empty Headers object when it shouldn't
be. This step has been removed with a comment in this commit.
If a RequestInit Headers is _not_ given, but a RequestInfo Headers is
given, RequestInfo Headers should be used to construct Request
Headers. That step has been added after Step 31.
Corresponding wpt result is updated in this commit.
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webgl: out-of-bounds readPixels() fixes
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Fix crashes in two WebGL readPixels() tests by adding framebuffer size validation.
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Add a generic type for sharing some CSS types
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This would be useful for types such as `T(pub Option<U>)` or any type that's a mixture of two types (like `LengthOrFoo` for example). Well, it's a bit ugly, especially because we have to address the types as `Either::First` and `Either::Second` everywhere, but I don't have a brighter idea 😄
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r? @SimonSapin (cc @Manishearth @emilio)
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layout: Mark flex items properly during construction
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Set the flag of the fragment of children in a flex container according
to the direction of the container. The mark is done on the fragment
because flex item enstablish a stacking context when its z-index is
non-zero ,despite its `position' property.
Part of #14123.
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r? @pcwalton
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Constellation manages script thread lifetime
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Yet another step towards fixing #633...
At the moment, script threads are responsible for killing themselves when they have no more pipelines to manage. This is fine right now, because script threads have a root pipeline: once it is closed, everything is closed. It's not fine once we fix#633 because there's a race condition where the constellation could kill the last pipeline in a script thread, then open a new one in the same script thread.
We can't have the constellation block on the script thread, waiting to make sure a pipeline is created, since this could introduce deadlock. The easiest solution is to have the constellation manage the script thread lifetime: when the constellation discovers that a script thread is not managing any live pipelines, it closes the script thread, and updates its own state.
Most of the commits are from #14013, its just "Script thread lifetime is now managed by the constellation." (9ac6e4d2ba) that's new.
cc @jdm @ConnorGBrewster
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Set the flag of the fragment of children in a flex container according
to the direction of the container. The mark is done on the fragment
because flex item enstablish a stacking context when its z-index is
non-zero ,despite its `position' property.
Script thread with no root document
<!-- Please describe your changes on the following line: -->
This PR removes the single root document from the script thread, and replaces it by a lookup table from `PipelineId`s to `Document`s. This is needed if we're going to share script threads, as per #633.
The last commit is the one that matters, the ones before are #13646.
cc @jdm @Ms2ger @ConnorGBrewster
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#13875 - Implement parsing/serialization for font-size-adjust.
<!-- Please describe your changes on the following line: -->
Implement parsing/serialization for font-size-adjust.
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Webbluetooth Async behaviour
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Note: depends on https://github.com/servo/servo/pull/13612
The current WBT communication is synchronous. With this, it should work properly (except the disconnect function, which will need some more work, because the current implementation differ from the spec).
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Rename media_queries::MediaQueryList to MediaList
<!-- Please describe your changes on the following line: -->
`MediaList` is the name of the interface for "collection of media queries" used in [CSSOM spec](https://drafts.csswg.org/cssom/#the-medialist-interface), `MediaQueryList` happens to mean something different in [CSSOM View spec](https://drafts.csswg.org/cssom-view/#the-mediaquerylist-interface), which also leads to naming conflict in dom code. So I think it's better renaming it to `MediaList`.
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Instead of filling request's headers whenever a `HeadersInit` is given, this
patch fills request's headers only when `HeadersInit` with a type of
`Headers` is given. Previously, the constructor tried to fill request's headers
with itself, causing Servo to crash.
Don't promote all scrollable regions to stacking contexts
<!-- Please describe your changes on the following line: -->
Don't promote all scrollable regions to stacking contexts
Instead annotate all flows with their owning ScrollRoots. When
processing the display list items into a flattened display list, we add
PushScrollRoot and PopScrollRoot to signal when scrolling regions start
and end. It is possible for content from different scrolling regions to
intersect and when they do, the stack of scrolling regions is
duplicated. When these duplicated scrolling regions stacks reach
WebRender, it will scroll them in tandem.
The PushScrollRoot and PopScrollRoot items are currently represented as
StackingContexts in WebRender, but eventually these will be replaced
with special WebRender display items.
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incremental restyle: Use more concrete types in the style system
We need to hang both snapshots and restyle damage off of ElementData, and so we need them to be concrete to avoid infecting ElementData with the trait hierarchy.
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