[MarkersIntersectingRange #2] Add DocumentMarkerController::MarkersIntersectingRange()

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights
  * reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
@@ skipping 380 matching lines @@
 
     const HeapVector<Member<DocumentMarker>>& results =
         list->MarkersIntersectingRange(offset, offset);
     if (!results.IsEmpty())
       return results.front();
   }
 
   return nullptr;
 }
 
+HeapVector<std::pair<Member<Node>, Member<DocumentMarker>>>
+DocumentMarkerController::MarkersIntersectingRange(
+    const EphemeralRangeInFlatTree& range,
+    DocumentMarker::MarkerTypes types) {
+  HeapVector<std::pair<Member<Node>, Member<DocumentMarker>>> node_marker_pairs;
+  if (!PossiblyHasMarkers(types))
+    return node_marker_pairs;
+
+  Node* const range_start_container =
+      range.StartPosition().ComputeContainerNode();
+  const unsigned range_start_offset =
+      range.StartPosition().ComputeOffsetInContainerNode();
+  Node* const range_end_container = range.EndPosition().ComputeContainerNode();
+  const unsigned range_end_offset =
+      range.EndPosition().ComputeOffsetInContainerNode();
+
+  for (Node& node : range.Nodes()) {
+    MarkerLists* const markers = markers_.at(&node);
+    if (!markers)
+      continue;
+
+    for (DocumentMarker::MarkerType type : types) {
+      const DocumentMarkerList* const list = ListForType(markers, type);
+      if (!list)
+        continue;
+
+      const unsigned start_offset =
+          node == range_start_container ? range_start_offset : 0;
+      const unsigned end_offset = node == range_end_container
+                                      ? range_end_offset
+                                      : node.MaxCharacterOffset();
+
+      const DocumentMarkerVector& markers_from_this_list =
+          list->MarkersIntersectingRange(start_offset, end_offset);
+      for (DocumentMarker* marker : markers_from_this_list)
+        node_marker_pairs.push_back(std::make_pair(&node, marker));
+    }
+  }
+
+  return node_marker_pairs;
+}
+
 DocumentMarkerVector DocumentMarkerController::MarkersFor(
     Node* node,
     DocumentMarker::MarkerTypes marker_types) {
   DocumentMarkerVector result;
 
   MarkerLists* markers = markers_.at(node);
   if (!markers)
     return result;
 
   for (DocumentMarker::MarkerType type : DocumentMarker::AllMarkers()) {
@@ skipping 341 matching lines @@
 }
 
 }  // namespace blink
 
 #ifndef NDEBUG
 void showDocumentMarkers(const blink::DocumentMarkerController* controller) {
   if (controller)
     controller->ShowMarkers();
 }
 #endif