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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/core/dom/node_part.h"
#include "third_party/blink/renderer/core/dom/child_node_part.h"
#include "third_party/blink/renderer/core/dom/node_cloning_data.h"
#include "third_party/blink/renderer/core/dom/part_root.h"
#include "third_party/blink/renderer/core/dom/tree_scope.h"
#include "third_party/blink/renderer/platform/runtime_enabled_features.h"
namespace blink {
// static
NodePart* NodePart::Create(PartRootUnion* root_union,
Node* node,
const PartInit* init,
ExceptionState& exception_state) {
if (!IsAcceptableNodeType(*node)) {
exception_state.ThrowDOMException(
DOMExceptionCode::kInvalidNodeTypeError,
"The provided node is not a valid node for a NodePart.");
return nullptr;
}
return MakeGarbageCollected<NodePart>(
*PartRoot::GetPartRootFromUnion(root_union), *node, init);
}
NodePart::NodePart(PartRoot& root,
Node& node,
Vector<String> metadata)
: Part(root, std::move(metadata)), node_(node) {
CHECK(IsAcceptableNodeType(node));
if (RuntimeEnabledFeatures::DOMPartsAPIMinimalEnabled()) {
node.SetHasNodePart();
} else {
node.AddDOMPart(*this);
root.AddPart(*this);
}
}
void NodePart::disconnect() {
if (!IsConnected()) {
CHECK(!node_);
return;
}
if (node_) {
if (RuntimeEnabledFeatures::DOMPartsAPIMinimalEnabled()) {
// TODO(crbug.com/40271855): This assumes that each Node has at most one
// NodePart attached. The consequence of that is that if you
// (imperatively) construct multiple Parts attached to the same Node,
// disconnecting one of them will disconnect all of them.
node_->ClearHasNodePart();
} else {
node_->RemoveDOMPart(*this);
}
}
node_ = nullptr;
Part::disconnect();
}
void NodePart::Trace(Visitor* visitor) const {
visitor->Trace(node_);
Part::Trace(visitor);
}
Node* NodePart::NodeToSortBy() const {
return node_.Get();
}
Part* NodePart::ClonePart(NodeCloningData& data, Node& node_clone) const {
DCHECK(IsValid());
return MakeGarbageCollected<NodePart>(data.CurrentPartRoot(), node_clone,
metadata().AsVector());
}
Document& NodePart::GetDocument() const {
DCHECK(IsValid());
return node_->GetDocument();
}
} // namespace blink
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