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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.
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_DOM_PART_ROOT_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_DOM_PART_ROOT_H_
#include "third_party/blink/renderer/bindings/core/v8/v8_union_childnodepart_documentpartroot.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/dom/part.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/heap/collection_support/heap_vector.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/heap/member.h"
namespace blink {
class ContainerNode;
class Document;
using PartRootUnion = V8UnionChildNodePartOrDocumentPartRoot;
// These should be the data (text content) of the start and end comment nodes
// that represent the endpoints of a ChildNodePart range.
#define kChildNodePartStartCommentData "#"
#define kChildNodePartEndCommentData "/"
// Implementation of the PartRoot class, which is part of the DOM Parts API.
// PartRoot is the base of the class hierarchy.
class CORE_EXPORT PartRoot : public GarbageCollectedMixin {
public:
PartRoot(const PartRoot&) = delete;
void operator=(const PartRoot&) = delete;
~PartRoot() = default;
void Trace(Visitor* visitor) const override;
// Adds a new part to this PartRoot's collection of maintained parts.
void AddPart(Part& new_part);
void RemovePart(Part& part);
static void CloneParts(const Node& source_node,
Node& destination_node,
NodeCloningData& data);
void MarkPartsDirty() {
DCHECK(!RuntimeEnabledFeatures::DOMPartsAPIMinimalEnabled());
cached_parts_list_dirty_ = true;
}
void SwapPartsList(PartRoot& other);
virtual Document& GetDocument() const = 0;
virtual bool IsDocumentPartRoot() const = 0;
virtual Node* FirstIncludedChildNode() const = 0;
virtual Node* LastIncludedChildNode() const = 0;
// Utilities to convert to/from the IDL union.
static PartRootUnion* GetUnionFromPartRoot(PartRoot* root);
static PartRoot* GetPartRootFromUnion(PartRootUnion* root_union);
static const PartRoot* GetPartRootFromUnion(const PartRootUnion* root_union) {
return GetPartRootFromUnion(const_cast<PartRootUnion*>(root_union));
}
// PartRoot API
using PartNodeList = GCedHeapVector<Member<Node>, 20>;
using PartList = GCedHeapVector<Member<Part>, 20>;
const PartList& getParts();
const PartNodeList& getNodePartNodes();
const PartNodeList& getChildNodePartNodes();
virtual ContainerNode* rootContainer() const = 0;
protected:
PartRoot();
virtual const PartRoot* GetParentPartRoot() const = 0;
private:
void RebuildPartsList();
Member<PartList> cached_ordered_parts_;
bool cached_parts_list_dirty_{false};
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_DOM_PART_ROOT_H_
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