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LibWeb: Add JSON serialization method to DOM::Node

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This method builds a JSON object representing the full state of the
DOM tree.

The JSON that is built will be used for building the DOM Inspector
widget for the OutOfProcessWebView.
This commit is contained in:
Adam Hodgen 2021-06-07 16:32:24 +01:00 • committed by Andreas Kling
parent f4eab69785
commit 4affe052b8
4 changed files with 48 additions and 0 deletions
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32
Userland/Libraries/LibWeb/DOM/Node.cpp
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@ -606,4 +606,36 @@ RefPtr<Document> Node::owner_document() const
return m_document;
}
void Node::serialize_tree_as_json(JsonObjectSerializer<StringBuilder>& object) const
{
object.add("name", node_name().view());
object.add("internal_id", (size_t)this);
if (is_document())
object.add("type", "document");
else if (is_element()) {
object.add("type", "element");
auto element = downcast<DOM::Element>(this);
if (element->has_attributes()) {
auto attributes = object.add_object("attributes");
element->for_each_attribute([&attributes](auto& name, auto& value) {
attributes.add(name, value);
});
}
} else if (is_text()) {
object.add("type", "text");
auto text_node = downcast<DOM::Text>(this);
object.add("text", text_node->data());
}
if (has_child_nodes()) {
auto children = object.add_array("children");
for_each_child([&children](DOM::Node& child) {
JsonObjectSerializer<StringBuilder> child_object = children.add_object();
child.serialize_tree_as_json(child_object);
});
}
}
}