Make first-letter style to work with editing

Source/core/editing/VisiblePosition.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Portions Copyright (c) 2011 Motorola Mobility, 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
@@ skipping 20 matching lines @@
 #include "bindings/v8/ExceptionState.h"
 #include "core/dom/Document.h"
 #include "core/dom/Range.h"
 #include "core/dom/Text.h"
 #include "core/editing/VisibleUnits.h"
 #include "core/editing/htmlediting.h"
 #include "core/html/HTMLElement.h"
 #include "core/html/HTMLHtmlElement.h"
 #include "core/platform/graphics/FloatQuad.h"
 #include "core/rendering/RenderBlock.h"
+#include "core/rendering/RenderText.h"
 #include "core/rendering/RootInlineBox.h"
 #include "wtf/text/CString.h"
 
 #ifndef NDEBUG
 #include <stdio.h>
 #endif
 
 namespace WebCore {
 
 using namespace HTMLNames;
@@ skipping 201 matching lines @@
                     if (box->bidiLevel() == level)
                         break;
                     level = box->bidiLevel();
                 }
                 renderer = box->renderer();
                 offset = primaryDirection == LTR ? box->caretMinOffset() : box->caretMaxOffset();
             }
             break;
         }
 
+        if (renderer->isText())
+            offset += toRenderText(renderer)->textStartOffset();
         p = createLegacyEditingPosition(renderer->node(), offset);
 
         if ((p.isCandidate() && p.downstream() != downstreamStart) || p.atStartOfTree() || p.atEndOfTree())
             return p;
 
         ASSERT(p != m_deepPosition);
     }
 }
 
 VisiblePosition VisiblePosition::left(bool stayInEditableContent) const
@@ skipping 148 matching lines @@
                     if (box->bidiLevel() == level)
                         break;
                     level = box->bidiLevel();
                 }
                 renderer = box->renderer();
                 offset = primaryDirection == LTR ? box->caretMaxOffset() : box->caretMinOffset();
             }
             break;
         }
 
+        if (renderer->isText())
+            offset += toRenderText(renderer)->textStartOffset();
         p = createLegacyEditingPosition(renderer->node(), offset);
 
         if ((p.isCandidate() && p.downstream() != downstreamStart) || p.atStartOfTree() || p.atEndOfTree())
             return p;
 
         ASSERT(p != m_deepPosition);
     }
 }
 
 VisiblePosition VisiblePosition::right(bool stayInEditableContent) const
@@ skipping 207 matching lines @@
 
     return textNode->data().characterStartingAt(offset);
 }
 
 LayoutRect VisiblePosition::localCaretRect(RenderObject*& renderer) const
 {
     if (m_deepPosition.isNull()) {
         renderer = 0;
         return IntRect();
     }
-    Node* node = m_deepPosition.anchorNode();
-
-    renderer = node->renderer();
+    renderer = m_deepPosition.rendererOfAnchorNode();
     if (!renderer)
         return LayoutRect();
 
     InlineBox* inlineBox;
     int caretOffset;
     getInlineBoxAndOffset(inlineBox, caretOffset);
 
     if (inlineBox)
         renderer = inlineBox->renderer();
 
@@ skipping 135 matching lines @@
     if (vpos)
         vpos->showTreeForThis();
 }
 
 void showTree(const WebCore::VisiblePosition& vpos)
 {
     vpos.showTreeForThis();
 }
 
 #endif