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layout_2020: Tag fragments with their pseudo content type

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This will allow us to answer queries and properly handle animations in
the future for fragments generated for pseudo content.
This commit is contained in:
Martin Robinson 2020-06-05 12:06:25 +02:00
parent 7df4655b60
commit 89855afa4d
14 changed files with 271 additions and 265 deletions
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17
components/layout_2020/query.rs
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@ -5,7 +5,7 @@
//! Utilities for querying the layout, as needed by the layout thread.
use crate::context::LayoutContext;
use crate::flow::FragmentTree;
use crate::fragments::Fragment;
use crate::fragments::{Fragment, Tag};
use app_units::Au;
use euclid::default::{Point2D, Rect};
use euclid::Size2D;
@ -250,10 +250,13 @@ pub fn process_resolved_style_request<'dom>(
let computed_style =
|| style.computed_value_to_string(PropertyDeclarationId::Longhand(longhand_id));
// We do not yet support pseudo content.
if pseudo.is_some() {
return computed_style();
}
let opaque = node.opaque();
let tag_to_find = match *pseudo {
None => Tag::Node(opaque),
Some(PseudoElement::Before) => Tag::BeforePseudo(opaque),
Some(PseudoElement::After) => Tag::AfterPseudo(opaque),
Some(_) => unreachable!("Should have returned before this point."),
};
// https://drafts.csswg.org/cssom/#dom-window-getcomputedstyle
// Here we are trying to conform to the specification that says that getComputedStyle
@ -287,9 +290,7 @@ pub fn process_resolved_style_request<'dom>(
fragment_tree
.find(|fragment, containing_block| {
let box_fragment = match fragment {
Fragment::Box(ref box_fragment) if box_fragment.tag == node.opaque() => {
box_fragment
},
Fragment::Box(ref box_fragment) if box_fragment.tag == tag_to_find => box_fragment,
_ => return None,
};