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LibWeb: Show element namespace URI in DOM tree dumps

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This is helpful when debugging SVG-in-HTML content.
This commit is contained in:
Andreas Kling 2025-07-06 17:28:27 +02:00 • committed by Andreas Kling
commit 61df035612
Notes: github-actions[bot] 2025-07-09 12:38:01 +00:00
1 changed files with 14 additions and 1 deletions
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15
Libraries/LibWeb/Dump.cpp
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@ -95,7 +95,20 @@ void dump_tree(StringBuilder& builder, DOM::Node const& node)
for (int i = 0; i < indent; ++i) for (int i = 0; i < indent; ++i)
builder.append(" "sv); builder.append(" "sv);
if (is<DOM::Element>(node)) { if (is<DOM::Element>(node)) {
builder.appendff("<{}", as<DOM::Element>(node).local_name()); auto short_namespace = [&] -> FlyString {
auto const& namespace_uri = as<DOM::Element>(node).namespace_uri();
if (!namespace_uri.has_value())
return "n/a"_fly_string;
if (namespace_uri == "http://www.w3.org/1999/xhtml"sv)
return "html"_fly_string;
if (namespace_uri == "http://www.w3.org/2000/svg"sv)
return "svg"_fly_string;
if (namespace_uri == "http://www.w3.org/1998/Math/MathML"sv)
return "mathml"_fly_string;
return *namespace_uri;
}();
builder.appendff("<{}:{}", short_namespace, as<DOM::Element>(node).local_name());
as<DOM::Element>(node).for_each_attribute([&](auto& name, auto& value) { as<DOM::Element>(node).for_each_attribute([&](auto& name, auto& value) {
builder.appendff(" {}={}", name, value); builder.appendff(" {}={}", name, value);
}); });