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LibWeb: Traverse shadow-including subtree when adopting DOM nodes

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This takes care of two FIXMEs and fixes an issue on Google Docs where
we'd mix boxes from different documents in the same layout tree.
(This happened because shadow trees remained attached to their old
document when their host was adopted.)
This commit is contained in:
Andreas Kling
2022-07-12 23:13:57 +02:00
parent 7d7d5f0b1b
commit 3ee5bdcfb7
Notes: sideshowbarker 2024-07-17 09:26:19 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/3ee5bdcfb7
3 changed files with 24 additions and 4 deletions
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18
Userland/Libraries/LibWeb/DOM/ShadowRoot.h
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@@ -45,4 +45,22 @@ private:
template<>
inline bool Node::fast_is<ShadowRoot>() const { return is_shadow_root(); }
template<typename Callback>
inline IterationDecision Node::for_each_shadow_including_descendant(Callback callback)
{
if (callback(*this) == IterationDecision::Break)
return IterationDecision::Break;
for (auto* child = first_child(); child; child = child->next_sibling()) {
if (child->is_element()) {
if (RefPtr<ShadowRoot> shadow_root = static_cast<Element*>(child)->shadow_root()) {
if (shadow_root->for_each_shadow_including_descendant(callback) == IterationDecision::Break)
return IterationDecision::Break;
}
}
if (child->for_each_shadow_including_descendant(callback) == IterationDecision::Break)
return IterationDecision::Break;
}
return IterationDecision::Continue;
}
}