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LibWeb/HTML: Only update the image data on fully loaded document

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Documents created by DOMParser and fragment documents do not
have an origin set on the document by the spec. These documents
also happen to never become fully active.

By properly implementing the steps for the <img> element to only
update the image data for documents which are fully active, this
fixes a crash for img elements in these types of documents.

Unfortunately, this is not a full fix for the microtask queue case.
This is because it seems possible for node document for an <img>
element to be changed during the microtask queue for that document.
It is not clear to me how this can be fixed in a nice way.
This commit is contained in:
Shannon Booth 2025-06-21 15:31:29 +12:00 • committed by Jelle Raaijmakers
commit 0bdcaf02d3
Notes: github-actions[bot] 2025-06-24 07:57:31 +00:00
7 changed files with 684 additions and 5 deletions
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19
Tests/LibWeb/Layout/expected/HTMLImageElement-update-the-image-data-temporary-document.txt Normal file
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@ -0,0 +1,19 @@
Viewport <#document> at (0,0) content-size 800x600 children: not-inline
BlockContainer <html> at (0,0) content-size 800x166 [BFC] children: not-inline
BlockContainer <body> at (8,8) content-size 784x150 children: not-inline
BlockContainer <(anonymous)> at (8,8) content-size 784x0 children: inline
TextNode <#text>
BlockContainer <div#image-container> at (8,8) content-size 784x150 children: inline
frag 0 from ImageBox start: 0, length: 0, rect: [8,8 150x150] baseline: 150
ImageBox <img> at (8,8) content-size 150x150 children: not-inline
BlockContainer <(anonymous)> at (8,158) content-size 784x0 children: inline
TextNode <#text>
TextNode <#text>
ViewportPaintable (Viewport<#document>) [0,0 800x600]
PaintableWithLines (BlockContainer<HTML>) [0,0 800x166]
PaintableWithLines (BlockContainer<BODY>) [8,8 784x150]
PaintableWithLines (BlockContainer(anonymous)) [8,8 784x0]
PaintableWithLines (BlockContainer<DIV>#image-container) [8,8 784x150]
ImagePaintable (ImageBox<IMG>) [8,8 150x150]
PaintableWithLines (BlockContainer(anonymous)) [8,158 784x0]