[DMC #4] Add CompositionMarkerListImpl

third_party/WebKit/Source/core/editing/markers/CompositionMarkerListImpl.cpp

+// 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.
+
+#include "core/editing/markers/CompositionMarkerListImpl.h"
+
+#include "core/editing/markers/DocumentMarkerListEditor.h"
+#include "core/editing/markers/RenderedDocumentMarker.h"
+
+namespace blink {
+
+bool CompositionMarkerListImpl::IsEmpty() const {
+  return markers_.IsEmpty();
+}
+
+void CompositionMarkerListImpl::Add(DocumentMarker* marker) {
+  DocumentMarkerListEditor::AddMarkerWithoutMergingOverlapping(&markers_,
+                                                               marker);
+}
+
+void CompositionMarkerListImpl::Clear() {
+  markers_.clear();
+}
+
+const HeapVector<Member<RenderedDocumentMarker>>&
+CompositionMarkerListImpl::GetMarkers() const {
+  return markers_;
+}
+
+bool CompositionMarkerListImpl::MoveMarkers(int length,
+                                            DocumentMarkerList* dst_markers_) {
+  return DocumentMarkerListEditor::MoveMarkers(&markers_, length, dst_markers_);
+}
+
+bool CompositionMarkerListImpl::RemoveMarkers(unsigned start_offset,
+                                              int length) {
+  return DocumentMarkerListEditor::RemoveMarkers(&markers_, start_offset,
+                                                 length);
+}
+
+bool CompositionMarkerListImpl::RemoveMarkersUnderWords(
+    const String& node_text,
+    const Vector<String>& words) {
+  // This method will be removed from the DocumentMarkerList interface once
+  // TextMatchMarkerListImpl is added. DocumentMarkerController shouldn't try to

[Xiaocheng, 2017/04/28 18:13:12]

nit: s/TextMatch/SpellCheck/

+  // call it on a list storing Composition markers.
+  NOTREACHED();
+  return false;
+}
+
+bool CompositionMarkerListImpl::ShiftMarkers(unsigned offset,
+                                             unsigned old_length,
+                                             unsigned new_length) {
+  return DocumentMarkerListEditor::ShiftMarkers(&markers_, offset, old_length,
+                                                new_length);
+}
+
+DEFINE_TRACE(CompositionMarkerListImpl) {
+  visitor->Trace(markers_);
+  DocumentMarkerList::Trace(visitor);
+}
+
+}  // namespace blink