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layout: Add support for table rows, columns, rowgroups and colgroups (#31341)

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This adds support for table rows, columns, rowgroups and colgroups.
There are few additions here:

1. The createion of fragments, which allows script queries and hit
   testing to work properly. These fragments are empty as all cells are
   still direct descendants of the table fragment.
2. Properly handling size information from tracks and track groups as
   well as frustrating rules about reordering rowgroups.
3. Painting a background seemlessly across track groups and groups. This
   is a thing that isn't done in legacy layout (nor WebKit)!

Co-authored-by: Oriol Brufau <obrufau@igalia.com>
This commit is contained in:
Martin Robinson 2024-02-20 14:22:02 +01:00 • committed by GitHub
parent 74c07db56c
commit 02ae1f448e
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57 changed files with 4274 additions and 21000 deletions
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4
components/script/dom/virtualmethods.rs
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@ -5,6 +5,7 @@
use html5ever::LocalName;
use style::attr::AttrValue;
use super::htmltablecolelement::HTMLTableColElement;
use crate::dom::attr::Attr;
use crate::dom::bindings::inheritance::{
Castable, ElementTypeId, HTMLElementTypeId, HTMLMediaElementTypeId, NodeTypeId,
@ -250,6 +251,9 @@ pub fn vtable_for(node: &Node) -> &dyn VirtualMethods {
NodeTypeId::Element(ElementTypeId::HTMLElement(
HTMLElementTypeId::HTMLTableCellElement,
)) => node.downcast::<HTMLTableCellElement>().unwrap() as &dyn VirtualMethods,
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLTableColElement)) => {
node.downcast::<HTMLTableColElement>().unwrap() as &dyn VirtualMethods
},
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLTableRowElement)) => {
node.downcast::<HTMLTableRowElement>().unwrap() as &dyn VirtualMethods
},