DocumentMarkerList refactor as an interface

third_party/WebKit/Source/core/editing/markers/DocumentMarkerListEditor.h

+// Copyright 2017 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 DocumentMarkerListEditor_h
+#define DocumentMarkerListEditor_h
+
+#include "core/editing/markers/DocumentMarkerList.h"
+
+namespace blink {
+
+class DocumentMarkerListEditor {
+ public:
+  static DocumentMarkerVector::iterator
+  GetPosOfFirstMarkerNotEndingBeforeInSortedList(
+      DocumentMarkerVector* marker_list,
+      size_t start_offset);
+
+  static DocumentMarkerList::DidMoveMarkerOrNot MoveUnsortedMarkers(
+      DocumentMarkerVector* marker_list,
+      int length,
+      DocumentMarkerList* dst_list);
+  static DocumentMarkerList::DidMoveMarkerOrNot MoveSortedMarkers(
+      DocumentMarkerVector* marker_list,
+      int length,
+      DocumentMarkerList* dst_list);
+
+  static DocumentMarkerList::DidRemoveMarkerOrNot RemoveUnsortedMarkers(
+      DocumentMarkerVector* marker_list,
+      unsigned start_offset,
+      int length);
+  static DocumentMarkerList::DidRemoveMarkerOrNot RemoveSortedMarkers(
+      DocumentMarkerVector* marker_list,
+      unsigned start_offset,
+      int length);
+
+  static DocumentMarkerList::DidShiftMarkerOrNot ShiftUnsortedMarkers(
+      DocumentMarkerVector* marker_list,
+      unsigned offset,
+      unsigned old_length,
+      unsigned new_length);
+  static DocumentMarkerList::DidShiftMarkerOrNot ShiftSortedMarkers(
+      DocumentMarkerVector* marker_list,
+      unsigned offset,
+      unsigned old_length,
+      unsigned new_length);
+
+ private:
+  DocumentMarkerListEditor();
+
+  static DocumentMarkerList::DidMoveMarkerOrNot MoveMarkersHelper(
+      DocumentMarkerVector* marker_list,
+      int length,
+      DocumentMarkerList* dst_list,
+      bool is_sorted);
+};
+
+}  // namespace blink
+
+#endif  // DocumentMarkerListEditor_h