Make SelectionState enum class

third_party/WebKit/Source/core/layout/LayoutBoxModelObject.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  *           (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 99 matching lines @@
 LayoutBoxModelObject* FloatStateForStyleChange::box_model_object_ = nullptr;
 
 // The HashMap for storing continuation pointers.
 // The continuation chain is a singly linked list. As such, the HashMap's value
 // is the next pointer associated with the key.
 typedef HashMap<const LayoutBoxModelObject*, LayoutBoxModelObject*>
     ContinuationMap;
 static ContinuationMap* g_continuation_map = nullptr;
 
 void LayoutBoxModelObject::SetSelectionState(SelectionState state) {
-  if (state == SelectionInside && GetSelectionState() != SelectionNone)
+  if (state == SelectionState::kInside &&
+      GetSelectionState() != SelectionState::kNone)
     return;
 
-  if ((state == SelectionStart && GetSelectionState() == SelectionEnd) ||
-      (state == SelectionEnd && GetSelectionState() == SelectionStart))
-    LayoutObject::SetSelectionState(SelectionBoth);
+  if ((state == SelectionState::kStart &&
+       GetSelectionState() == SelectionState::kEnd) ||
+      (state == SelectionState::kEnd &&
+       GetSelectionState() == SelectionState::kStart))
+    LayoutObject::SetSelectionState(SelectionState::kStartAndEnd);
   else
     LayoutObject::SetSelectionState(state);
 
   // FIXME: We should consider whether it is OK propagating to ancestor
   // LayoutInlines. This is a workaround for http://webkit.org/b/32123
   // The containing block can be null in case of an orphaned tree.
   LayoutBlock* containing_block = this->ContainingBlock();
   if (containing_block && !containing_block->IsLayoutView())
     containing_block->SetSelectionState(state);
 }
@@ skipping 1347 matching lines @@
   if (root_element_style->HasBackground())
     return false;
 
   if (GetNode() != GetDocument().FirstBodyElement())
     return false;
 
   return true;
 }
 
 }  // namespace blink