Before this patch, we were setting the dirty descendants bit in animation-only
restyles and it triggered unnecessary traversal for elements that does not need
the traversal (i.e no need selector matching).
If we check it and skip the child after ensure_element_data() call,
the child will have an empty element data, so we will succeed
element_data.is_some() check unexpectedly.
Make filter property animatable.
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This is a PR for https://bugzilla.mozilla.org/show_bug.cgi?id=1362897
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We will need to convert from URLValueData to SpecifiedUrl when cloning the
stylo's data from gecko's data. Because the filter structure on gecko has url as
URLValue type. We will use this convert function when interpolating as
discrete also(Bug 1368610).
If the units of two angles being interpolated/added matches, we should preserve
the original unit; otherwise, we fall back to radians. This matches the behavior
of Gecko.
Added Async HTML Tokenizer
Design: I realized having two different parsers for sync and async was wrong, because the API for both was fundamentally the same. All I needed to do was create another Tokenizer, because `ParseNode` ( representation for nodes which are yet to be created) is used by the TreeBuilder and the Sink, and the `Tokenizer` is the 'lowermost' type concerned with these two types.
Therefore, I created one and placed it in `async_html.rs`, and also created a new Sink which deals with `ParseNode`s. I changed the methods in ServoParser to take an `async` argument too, which decides which Tokenizer will be used. The Tokenizer isn't exactly *async* for now, but this PR separates action creation from execution, which allows the async behaviour to be implemented later. Right now, all actions are executed soon after they are created.
The Sink consists of two Hashmaps, `nodes`, which contains the actual nodes, with the key being their corresponding `ParseNode`'s id, and `parse_node_data`, which contains metadata about the nodes.
It's still a bit rough, (I can't figure out how to deal with `complete_script` and `is_mathml_annotation_xml_integration_point`, along with some other parts I wrote in a hurry), but I believe the overall design is sound. I'd like to hear what you think about it.
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Fix over-alignment assert crash on Android.
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See https://github.com/servo/servo/issues/17320
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Hold stderr lock when using stdout through Console APIs.
This addresses a longstanding source of intermittent test failures where the stderr and stdout outputs get interleaved and the test harness becomes confused.
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Propagate changes in custom properties' computed values to descendants
If ComputedValues.custom_properties differs between the old and new
ComputedValues, indicate that we have to propogate changes to
descendants by setting child_cascade_requirement to
MustCascadeDescendants in cascade_primary.
style::matching::TElement::cascade_primary already calls
accumulate_damage, which eventually calls
ServoRestyleDamage::compute_style_difference in order to check if other
properties' computed values changed. If any of those change, we signal
that we need to propogate changes for inherited properties.
With Properties & Values, some custom properties will not be inherited,
and we will need to revisit this.
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WebIDL HTMLConstructor support
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spec: https://html.spec.whatwg.org/multipage/#htmlconstructor
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