Introduce FrameSelection::moveCaretSelection() as replacement of moveTo()

third_party/WebKit/Source/core/editing/FrameSelection.cpp

 /*
  * Copyright (C) 2004, 2008, 2009, 2010 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 136 matching lines @@
 }
 
 const VisibleSelection& FrameSelection::selection() const {
   return visibleSelection<EditingStrategy>();
 }
 
 const VisibleSelectionInFlatTree& FrameSelection::selectionInFlatTree() const {
   return visibleSelection<EditingInFlatTreeStrategy>();
 }
 
-void FrameSelection::moveTo(const VisiblePosition& pos,
-                            EUserTriggered userTriggered,
-                            CursorAlignOnScroll align) {
-  SetSelectionOptions options = CloseTyping | ClearTypingStyle | userTriggered;
-  setSelection(createVisibleSelection(pos, pos, selection().isDirectional()),
-               options, align);
+void FrameSelection::moveCaretSelection(const IntPoint& point) {
+  DCHECK(!document().needsLayoutTreeUpdate());
+
+  Element* const editable = rootEditableElement();
+  if (!editable)
+    return;
+
+  const VisiblePosition position =
+      visiblePositionForContentsPoint(point, frame());
+  SelectionInDOMTree::Builder builder;
+  builder.setIsDirectional(selection().isDirectional());
+  if (position.isNotNull())
+    builder.collapse(position.toPositionWithAffinity());
+  setSelection(builder.build(), CloseTyping | ClearTypingStyle | UserTriggered);
 }
 
 // TODO(xiaochengh): We should not use reference to return value.
 template <typename Strategy>
 static void adjustEndpointsAtBidiBoundary(
     VisiblePositionTemplate<Strategy>& visibleBase,
     VisiblePositionTemplate<Strategy>& visibleExtent) {
   DCHECK(visibleBase.isValid());
   DCHECK(visibleExtent.isValid());
 
@@ skipping 1328 matching lines @@
 }
 
 void showTree(const blink::FrameSelection* sel) {
   if (sel)
     sel->showTreeForThis();
   else
     LOG(INFO) << "Cannot showTree for <null> FrameSelection.";
 }
 
 #endif