The HTML specification defines the 'width' and 'height' attributes as
dimension attributes for the embedded content and images (img, iframe,
embed, object, video, source, input with image type)
https://html.spec.whatwg.org/multipage/#dimension-attributes and for the
tables (table, col, colgroup, thead, tbody, tfoot, tr, td, th) even
these attributes are marked as obsolete.
And UA are expected to use these 'width' and 'height' attributes as
style presentational hints for the rendering.
The embedded content and images:
https://html.spec.whatwg.org/multipage/#dimRendering
The tables:
https://html.spec.whatwg.org/multipage/#tables-2:the-table-element-4
Added missing 'width' and/or 'height' reflected IDL attributes:
- conformant 'unsigned long' IDL attributes for the 'img, source, video'
(with new macro 'make_dimension_uint*)
- obsolete 'DOMString' IDL attributes for the 'td, th, col, colgroup'
Moved the `fn attribute_affects_presentational_hints()` from Element to
specific HTML and SVG elements with attributes which affects
presentational hints for rendering.
Testing: Improvements in the following tests
- html/dom/idlharness.https.html
- html/dom/reflection-embedded.html
- html/dom/reflection-tabular.html
-
html/rendering/replaced-elements/attributes-for-embedded-content-and-images/picture-aspect-ratio.html
Signed-off-by: Andrei Volykhin <andrei.volykhin@gmail.com>
Follow the HTML implemetation and support selection of the 'media'
element loading source from 'source' children elements with validation
processing over their 'media/src/type' attributes.
See https://html.spec.whatwg.org/multipage/#concept-media-load-algorithm
To handle loading with multiple 'source' children was introduced source
children pointer to track the remaining unprocessed 'source' elements
after the resource selection algorithm was invoked.
Testing: Changes in the following tests
with improvements:
-
html/semantics/embedded-content/media-elements/loading-the-media-resource/*
- webgl/tests/conformance/textures/misc/texture-video-transparent.html
with regressions (after enabled 'source' type attribute validation):
- content-security-policy/media-src/media-src*
- mixed-content/gen/top\*audio|video-tag*
- resource-timing/initiator-type/*
Fixes: https://github.com/servo/servo/issues/21481
Fixes: https://github.com/servo/servo/issues/34127
Signed-off-by: Andrei Volykhin <andrei.volykhin@gmail.com>
Follow the HTML specification and take into account that the HTML
`<image>/<source>` element inserting/removal steps should only be
counted as relevant mutations for `<image>` element if the parent of the
inclusive ancestor that was inserted/removed is the parent `<picture>`
element.
See <https://html.spec.whatwg.org/multipage/#relevant-mutations>.
Testing: Improvements in the following tests
-
html/semantics/embedded-content/the-img-element/relevant-mutations.html
Signed-off-by: Andrei Volykhin <andrei.volykhin@gmail.com>
