Custom element creation
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This implements the CE-related steps when creating elements. `is` is now support by `document.createElement` and is stored on `Element`s. Only synchronously created autonomous elements are supported as async element creation and customized built-in elements both require custom element upgrade reactions.
Spec: https://dom.spec.whatwg.org/#concept-create-element
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Force HTMLStyleElement to create a new CSSStyleSheet when re-parsing.
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Re-enabled iframe-append-to-child-document.html
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Re-enabled a WPT test. Don't get too excited, the test FAILs.
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Added exception-handling to worker wpt tests.
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Added exception-handling to worker wpt tests.
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Fix several bugs related to scrolling
* scrollLeft/scrollTop returned values of parent or even document root
Only the scroll of the node itself is returned. Otherwise 0.0.
* Scrolling via script had set viewport.
This resulted in other nodes appearing scrolled.
Now scroll_offsets are updated with correct node id.
These bugs caused other odd behavior like both body and
document.documentElement being scrolled or the view for scrolled
elements jumping.
Also try scrolling this [example page](https://pyfisch.org/stuff/scrolltest.html) in servo with and without this change.
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We already call Document::invalidate_style_sheets and set
the stylesheet member to a new Stylesheet. This matches the behavior of
Firefox, and means the new CSSStyleSheet you get from accessing .sheet
from JS will be correct instead of stale.
(::get_cssom_stylesheet already tries to use the new Stylesheet, but
MutNullableJS::or_init is called, so if we already created a
CSSStyleSheet we will continue to return that one).
`ElementStyles` holds an optional list of values for each eager pseudo-element.
However, the type was declared as a slice instead of a fixed size array, so an
extra 8 bytes were being allocated to hold the size, even though it never
changes.
Moving the constant size into the type reduces `ElementStyles` and `ElementData`
by 8 bytes.
MozReview-Commit-ID: GaO6DKFxUMo
Before this change, the `ComputedStyle` struct that is part of permanent style
data per element holds 2 `StrongRuleNode`s (unvisited and visited) and 2
`Arc<ComputedValues>` (unvisited and visited).
Both rule nodes and the visited values don't actually need to be here. This
patch moves these 3 to new temporary storage in `CascadeInputs` on
`CurrentElementInfo` during the match and cascade process. Rule nodes are
pushed down inside the `ComputedValues` for later access after the cascade.
(Visited values were already available there.)
The permanent style data per element now has just the `Arc<ComputedValues>` for
itself and eager pseudo-elements (plus the `RestyleHint`).
MozReview-Commit-ID: 3wq52ERMpdi
Paint worklet size should agree with Chrome.
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Getting our implementation to agree with Chrome about the definition of the size parameter to a paint worklet.
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Correctly test CSSStyleRule.style.
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This is part of a series of PRs to fix https://github.com/servo/servo/issues/17182
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Windows can run WPT
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This PR contains fixes that address the specific errors in #17392: WTP workarounds for Windows terminals (see #8313), modifications to `mach test --all` that allow `test_tidy` to be called properly, and modifications to the test harness for WPT that allow it to run when OpenSSL isn't found. How to handle OpenSSL on Windows is probably a separate issue because it doesn't have a straightforward answer: we either need to provide specific instructions to users or bundle it in binary form ourselves.
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Add some more tests for gradients
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@jdm proposed to add these tests directly to servo.
@bors-servo try
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Make background gradient cover padding
CSS-gradients should not only cover the content of an
element but also the padding (but not the border).
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Thanks to @atouchet for catching this.
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- [x] These changes do not require tests because gradients are hard to test automatically but you can use [this gist](https://gist.github.com/pyfisch/fa263c8dfc57e5812fe8a4869ad61513) as a manual test.
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Shrink rulenode
This shrinks rulenode by one word by removing the Option wrapper around the StyleSource and adding None to StyleSource as an additional variant. The issue mentions shrinking by two words but the free_count one was taken care of in #17368.
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Also tested with `./mach test-unit` and `./mach test-stylo` with no errors reported from either.
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r? @bholley
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* scrollLeft/scrollTop returned values of parent or even document root
Only the scroll of the node itself is returned. Otherwise 0.0.
* Scrolling via script had set viewport.
This resulted in other nodes appearing scrolled.
Now scroll_offsets are updated with correct node id.
These bugs caused other odd behavior like both body and
document.documentElement being scrolled or the view for scrolled
elements jumping.
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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