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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef EditingStrategy_h
#define EditingStrategy_h
#include "core/CoreExport.h"
#include "core/dom/FlatTreeTraversal.h"
#include "core/dom/NodeTraversal.h"
#include "platform/wtf/Allocator.h"
namespace blink {
// Editing algorithm defined on node traversal.
template <typename Traversal>
class CORE_TEMPLATE_CLASS_EXPORT EditingAlgorithm : public Traversal {
static int CaretMaxOffset(const Node&);
// This method is used to create positions in the DOM. It returns the
// maximum valid offset in a node. It returns 1 for some elements even
// though they do not have children, which creates technically invalid DOM
// Positions. Be sure to call |parentAnchoredEquivalent()| on a Position
// before using it to create a DOM Range, or an exception will be thrown.
static int LastOffsetForEditing(const Node*);
static Node* RootUserSelectAllForNode(Node*);
extern template class CORE_EXTERN_TEMPLATE_EXPORT
extern template class CORE_EXTERN_TEMPLATE_EXPORT
// DOM tree version of editing algorithm
using EditingStrategy = EditingAlgorithm<NodeTraversal>;
// Flat tree version of editing algorithm
using EditingInFlatTreeStrategy = EditingAlgorithm<FlatTreeTraversal>;
} // namespace blink
#endif // EditingStrategy_h