Make SelectionState enum class

third_party/WebKit/Source/core/layout/line/RootInlineBox.cpp

 /*
  * Copyright (C) 2003, 2006, 2008 Apple 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
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 325 matching lines @@
         std::max(PrevRootBox()->LineBottom(), LineTop()) - result;
     result =
         PrevRootBox()->ComputeOverAnnotationAdjustment(lowest_allowed_position);
   }
 
   return result;
 }
 
 SelectionState RootInlineBox::GetSelectionState() const {
   // Walk over all of the selected boxes.
-  SelectionState state = SelectionNone;
+  SelectionState state = SelectionState::kNone;
   for (InlineBox* box = FirstLeafChild(); box; box = box->NextLeafChild()) {
     SelectionState box_state = box->GetSelectionState();
-    if ((box_state == SelectionStart && state == SelectionEnd) ||
-        (box_state == SelectionEnd && state == SelectionStart)) {
-      state = SelectionBoth;
-    } else if (state == SelectionNone ||
-               ((box_state == SelectionStart || box_state == SelectionEnd) &&
-                (state == SelectionNone || state == SelectionInside))) {
+    if ((box_state == SelectionState::kStart &&
+         state == SelectionState::kEnd) ||
+        (box_state == SelectionState::kEnd &&
+         state == SelectionState::kStart)) {
+      state = SelectionState::kStartAndEnd;
+    } else if (state == SelectionState::kNone ||
+               ((box_state == SelectionState::kStart ||
+                 box_state == SelectionState::kEnd) &&
+                (state == SelectionState::kNone ||
+                 state == SelectionState::kInside))) {
       state = box_state;
-    } else if (box_state == SelectionNone && state == SelectionStart) {
+    } else if (box_state == SelectionState::kNone &&
+               state == SelectionState::kStart) {
       // We are past the end of the selection.
-      state = SelectionBoth;
+      state = SelectionState::kStartAndEnd;
     }
-    if (state == SelectionBoth)
+    if (state == SelectionState::kStartAndEnd)
       break;
   }
 
   return state;
 }
 
 InlineBox* RootInlineBox::FirstSelectedBox() const {
   for (InlineBox* box = FirstLeafChild(); box; box = box->NextLeafChild()) {
-    if (box->GetSelectionState() != SelectionNone)
+    if (box->GetSelectionState() != SelectionState::kNone)
       return box;
   }
 
   return nullptr;
 }
 
 InlineBox* RootInlineBox::LastSelectedBox() const {
   for (InlineBox* box = LastLeafChild(); box; box = box->PrevLeafChild()) {
-    if (box->GetSelectionState() != SelectionNone)
+    if (box->GetSelectionState() != SelectionState::kNone)
       return box;
   }
 
   return nullptr;
 }
 
 LayoutUnit RootInlineBox::SelectionTop() const {
   LayoutUnit selection_top = line_top_;
   if (has_annotations_before_)
     selection_top -= !GetLineLayoutItem().Style()->IsFlippedLinesWritingMode()
@@ skipping 398 matching lines @@
   }
   end_box = nullptr;
   return nullptr;
 }
 
 const char* RootInlineBox::BoxName() const {
   return "RootInlineBox";
 }
 
 }  // namespace blink