Add TextMatchMarkerList in preparation for DocumentMarkerController refactor

third_party/WebKit/Source/core/editing/markers/TextMatchMarkerList.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 TextMatchMarkerList_h
+#define TextMatchMarkerList_h
+
+#include "core/editing/markers/DocumentMarkerList.h"
+
+#include "core/editing/markers/TextMatchMarker.h"
+
+namespace blink {
+
+class DocumentMarker;
+
+// TextMatchMarkerList only supports adding TextMatch markers in sorted order,
+// and adds some functionality specific to TextMatch markers.
+class CORE_EXPORT TextMatchMarkerList : public DocumentMarkerList {
+ public:
+  explicit TextMatchMarkerList();
+
+  // DocumentMarkerList implementations
+  DocumentMarker::MarkerType allowedMarkerType() const final;
+  void add(DocumentMarker*) final;
+
+  // TextMatchMarkerList-specific methods
+  void appendRenderedRectsToInputList(const Node&,
+                                      Vector<IntRect>* result) const;
+  void invalidateRects();
+  bool setTextMatchMarkersActive(unsigned startOffset,

[Xiaocheng, 2017/03/30 21:12:07]

nit: please use |enum class| return type for better clarity.

+                                 unsigned endOffset,
+                                 bool active);
+
+ protected:
+  bool markerListIsSorted() const final;
+
+  DECLARE_VIRTUAL_TRACE();
+  DISALLOW_COPY_AND_ASSIGN(TextMatchMarkerList);
+};
+
+DEFINE_TYPE_CASTS(TextMatchMarkerList,
+                  DocumentMarkerList,
+                  list,
+                  list->allowedMarkerType() == DocumentMarker::TextMatch,
+                  list.allowedMarkerType() == DocumentMarker::TextMatch);
+
+}  // namespace blink
+
+#endif  // TextMatchMarkerList_h