Revert of Convert first letter into a pseudo element.

Source/core/rendering/RenderBoxModelObject.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 42 matching lines @@
 // The HashMap for storing continuation pointers.
 // An inline can be split with blocks occuring in between the inline content.
 // When this occurs we need a pointer to the next object. We can basically be
 // split into a sequence of inlines and blocks. The continuation will either be
 // an anonymous block (that houses other blocks) or it will be an inline flow.
 // <b><i><p>Hello</p></i></b>. In this example the <i> will have a block as
 // its continuation but the <b> will just have an inline as its continuation.
 typedef WillBeHeapHashMap<RawPtrWillBeMember<const RenderBoxModelObject>, RawPtrWillBeMember<RenderBoxModelObject> > ContinuationMap;
 static OwnPtrWillBePersistent<ContinuationMap>* continuationMap = 0;
 
+// This HashMap is similar to the continuation map, but connects first-letter
+// renderers to their remaining text fragments.
+typedef WillBeHeapHashMap<RawPtrWillBeMember<const RenderBoxModelObject>, RawPtrWillBeMember<RenderTextFragment> > FirstLetterRemainingTextMap;
+static OwnPtrWillBePersistent<FirstLetterRemainingTextMap>* firstLetterRemainingTextMap = 0;
+
 void RenderBoxModelObject::setSelectionState(SelectionState state)
 {
     if (state == SelectionInside && selectionState() != SelectionNone)
         return;
 
     if ((state == SelectionStart && selectionState() == SelectionEnd)
         || (state == SelectionEnd && selectionState() == SelectionStart))
         RenderObject::setSelectionState(SelectionBoth);
     else
         RenderObject::setSelectionState(state);
@@ skipping 28 matching lines @@
 {
 }
 
 void RenderBoxModelObject::willBeDestroyed()
 {
     ImageQualityController::remove(this);
 
     // A continuation of this RenderObject should be destroyed at subclasses.
     ASSERT(!continuation());
 
+    // If this is a first-letter object with a remaining text fragment then the
+    // entry needs to be cleared from the map.
+    if (firstLetterRemainingText())
+        setFirstLetterRemainingText(0);
+
     RenderLayerModelObject::willBeDestroyed();
 }
 
 bool RenderBoxModelObject::calculateHasBoxDecorations() const
 {
     RenderStyle* styleToUse = style();
     ASSERT(styleToUse);
     return hasBackground() || styleToUse->hasBorder() || styleToUse->hasAppearance() || styleToUse->boxShadow();
 }
 
@@ skipping 354 matching lines @@
     RenderLayerModelObject::computeLayerHitTestRects(rects);
 
     // If there is a continuation then we need to consult it here, since this is
     // the root of the tree walk and it wouldn't otherwise get picked up.
     // Continuations should always be siblings in the tree, so any others should
     // get picked up already by the tree walk.
     if (continuation())
         continuation()->computeLayerHitTestRects(rects);
 }
 
+RenderTextFragment* RenderBoxModelObject::firstLetterRemainingText() const
+{
+    if (!firstLetterRemainingTextMap)
+        return 0;
+    return (*firstLetterRemainingTextMap)->get(this);
+}
+
+void RenderBoxModelObject::setFirstLetterRemainingText(RenderTextFragment* remainingText)
+{
+    if (remainingText) {
+        if (!firstLetterRemainingTextMap)
+            firstLetterRemainingTextMap = new OwnPtrWillBePersistent<FirstLetterRemainingTextMap>(adoptPtrWillBeNoop(new FirstLetterRemainingTextMap));
+        (*firstLetterRemainingTextMap)->set(this, remainingText);
+    } else if (firstLetterRemainingTextMap) {
+        (*firstLetterRemainingTextMap)->remove(this);
+    }
+}
+
 LayoutRect RenderBoxModelObject::localCaretRectForEmptyElement(LayoutUnit width, LayoutUnit textIndentOffset)
 {
     ASSERT(!slowFirstChild());
 
     // FIXME: This does not take into account either :first-line or :first-letter
     // However, as soon as some content is entered, the line boxes will be
     // constructed and this kludge is not called any more. So only the caret size
     // of an empty :first-line'd block is wrong. I think we can live with that.
     RenderStyle* currentStyle = firstLineStyle();
 
@@ skipping 150 matching lines @@
     ASSERT(!beforeChild || toBoxModelObject == beforeChild->parent());
     for (RenderObject* child = startChild; child && child != endChild; ) {
         // Save our next sibling as moveChildTo will clear it.
         RenderObject* nextSibling = child->nextSibling();
         moveChildTo(toBoxModelObject, child, beforeChild, fullRemoveInsert);
         child = nextSibling;
     }
 }
 
 } // namespace blink