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LibWeb: Add the cloning steps in clone_node

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This will be used in HTMLTemplateElement later to clone template
contents.

This makes the clone functions non-const in the process, as the cloning
steps can have side effects.
This commit is contained in:
Luke 2021-07-05 05:30:24 +01:00 • committed by Andreas Kling
parent e4ae1cdd1f
commit f3f2170ac6
2 changed files with 8 additions and 5 deletions
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8
Userland/Libraries/LibWeb/DOM/Node.cpp
View file

@ -406,7 +406,7 @@ ExceptionOr<NonnullRefPtr<Node>> Node::replace_child(NonnullRefPtr<Node> node, N
}
// https://dom.spec.whatwg.org/#concept-node-clone
NonnullRefPtr<Node> Node::clone_node(Document* document, bool clone_children) const
NonnullRefPtr<Node> Node::clone_node(Document* document, bool clone_children)
{
if (!document)
document = m_document;
@ -454,7 +454,9 @@ NonnullRefPtr<Node> Node::clone_node(Document* document, bool clone_children) co
TODO();
}
// FIXME: 4. Set copy’s node document and document to copy, if copy is a document, and set copy’s node document to document otherwise.
// FIXME: 5. Run any cloning steps defined for node in other applicable specifications and pass copy, node, document and the clone children flag if set, as parameters.
cloned(*copy, clone_children);
if (clone_children) {
for_each_child([&](auto& child) {
copy->append_child(child.clone_node(document, true));
@ -464,7 +466,7 @@ NonnullRefPtr<Node> Node::clone_node(Document* document, bool clone_children) co
}
// https://dom.spec.whatwg.org/#dom-node-clonenode
ExceptionOr<NonnullRefPtr<Node>> Node::clone_node_binding(bool deep) const
ExceptionOr<NonnullRefPtr<Node>> Node::clone_node_binding(bool deep)
{
if (is<ShadowRoot>(*this))
return NotSupportedError::create("Cannot clone shadow root");

5
Userland/Libraries/LibWeb/DOM/Node.h
View file

@ -85,8 +85,8 @@ public:
ExceptionOr<NonnullRefPtr<Node>> replace_child(NonnullRefPtr<Node> node, NonnullRefPtr<Node> child);
NonnullRefPtr<Node> clone_node(Document* document = nullptr, bool clone_children = false) const;
ExceptionOr<NonnullRefPtr<Node>> clone_node_binding(bool deep) const;
NonnullRefPtr<Node> clone_node(Document* document = nullptr, bool clone_children = false);
ExceptionOr<NonnullRefPtr<Node>> clone_node_binding(bool deep);
// NOTE: This is intended for the JS bindings.
bool has_child_nodes() const { return has_children(); }
@ -134,6 +134,7 @@ public:
virtual void removed_from(Node*) { }
virtual void children_changed() { }
virtual void adopted_from(const Document&) { }
virtual void cloned(Node&, bool) {};
const Layout::Node* layout_node() const { return m_layout_node; }
Layout::Node* layout_node() { return m_layout_node; }