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LibWeb: Don't generate ::before/::after for BR elements

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We shouldn't be putting generated pseudo elements inside elements that
can't have children in the first place.

This patch fixes two issues:
- We stop generating pseudo elements for layout nodes that can't have
  children anyway.
- We mark Layout::BreakNode as not being able to have children.
This commit is contained in:
Andreas Kling 2023-09-14 14:30:39 +02:00
parent a7c1af08ca
commit 80a78c4deb
4 changed files with 34 additions and 1 deletions
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29
Tests/LibWeb/Layout/expected/br-should-not-generate-pseudo-before.txt Normal file
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@ -0,0 +1,29 @@
Viewport <#document> at (0,0) content-size 800x600 children: not-inline
BlockContainer <html> at (0,0) content-size 800x84.875 [BFC] children: not-inline
BlockContainer <body> at (8,16) content-size 784x68.875 children: not-inline
BlockContainer <p> at (8,16) content-size 784x17.46875 children: inline
line 0 width: 310.625, height: 17.46875, bottom: 17.46875, baseline: 13.53125
frag 0 from TextNode start: 0, length: 1, rect: [8,16 10.625x17.46875]
"+"
frag 1 from TextNode start: 0, length: 36, rect: [19,16 300x17.46875]
"P should generate a ::before pseudo."
InlineNode <(anonymous)>
TextNode <#text>
TextNode <#text>
BlockContainer <(anonymous)> at (8,49.46875) content-size 784x35.40625 children: inline
line 0 width: 0, height: 17.46875, bottom: 17.46875, baseline: 13.53125
line 1 width: 120.578125, height: 17.9375, bottom: 35.40625, baseline: 13.53125
frag 0 from TextNode start: 0, length: 14, rect: [8,66.46875 120.578125x17.46875]
"BR should not!"
BreakNode <br>
TextNode <#text>
ViewportPaintable (Viewport<#document>) [0,0 800x600]
PaintableWithLines (BlockContainer<HTML>) [0,0 800x84.875]
PaintableWithLines (BlockContainer<BODY>) [8,16 784x68.875]
PaintableWithLines (BlockContainer<P>) [8,16 784x17.46875]
InlinePaintable (InlineNode(anonymous))
TextPaintable (TextNode<#text>)
TextPaintable (TextNode<#text>)
PaintableWithLines (BlockContainer(anonymous)) [8,49.46875 784x35.40625]
TextPaintable (TextNode<#text>)