Convert first letter into a pseudo element.

Source/core/rendering/RenderObject.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 1615 matching lines @@
     if (diff.needsPaintInvalidationLayer() && !hasLayer()) {
         diff.clearNeedsPaintInvalidation();
         diff.setNeedsPaintInvalidationObject();
     }
 
     return diff;
 }
 
 void RenderObject::setPseudoStyle(PassRefPtr<RenderStyle> pseudoStyle)
 {
-    ASSERT(pseudoStyle->styleType() == BEFORE || pseudoStyle->styleType() == AFTER);
+    ASSERT(pseudoStyle->styleType() == BEFORE || pseudoStyle->styleType() == AFTER || pseudoStyle->styleType() == FIRST_LETTER);
 
     // FIXME: We should consider just making all pseudo items use an inherited style.
 
     // Images are special and must inherit the pseudoStyle so the width and height of
     // the pseudo element doesn't change the size of the image. In all other cases we
     // can just share the style.
     //
     // Quotes are also RenderInline, so we need to create an inherited style to avoid
     // getting an inline with positioning or an invalid display.
     //
@@ skipping 1001 matching lines @@
     const RenderObject* rendererForFirstLineStyle = renderer;
     if (renderer->isBeforeOrAfterContent())
         rendererForFirstLineStyle = renderer->parent();
 
     if (rendererForFirstLineStyle->isRenderBlockFlow() || rendererForFirstLineStyle->isRenderButton()) {
         if (RenderBlock* firstLineBlock = rendererForFirstLineStyle->firstLineBlock()) {
             if (type == Cached)
                 return firstLineBlock->getCachedPseudoStyle(FIRST_LINE, style);
             return firstLineBlock->getUncachedPseudoStyle(PseudoStyleRequest(FIRST_LINE), style, firstLineBlock == renderer ? style : 0);
         }
-    } else if (!rendererForFirstLineStyle->isAnonymous() && rendererForFirstLineStyle->isRenderInline()) {
+    } else if (!rendererForFirstLineStyle->isAnonymous() && rendererForFirstLineStyle->isRenderInline()
+        && (!rendererForFirstLineStyle->node() || !rendererForFirstLineStyle->node()->isFirstLetterPseudoElement())) {

[Julien - ping for review, 2014/10/09 18:24:48]

rendererForFirstLineStyle->node() will only return 0 for anonymous content and
the first close of the if checks for that. Thus I think that this check is
redundant and unneeded.

[dsinclair, 2014/10/09 21:14:22]

Done.

+
         RenderStyle* parentStyle = rendererForFirstLineStyle->parent()->firstLineStyle();
         if (parentStyle != rendererForFirstLineStyle->parent()->style()) {
             if (type == Cached) {
                 // A first-line style is in effect. Cache a first-line style for ourselves.
                 rendererForFirstLineStyle->style()->setHasPseudoStyle(FIRST_LINE_INHERITED);
                 return rendererForFirstLineStyle->getCachedPseudoStyle(FIRST_LINE_INHERITED, parentStyle);
             }
             return rendererForFirstLineStyle->getUncachedPseudoStyle(PseudoStyleRequest(FIRST_LINE_INHERITED), parentStyle, style);
         }
     }
@@ skipping 504 matching lines @@
 {
     if (object1) {
         const blink::RenderObject* root = object1;
         while (root->parent())
             root = root->parent();
         root->showRenderTreeAndMark(object1, "*", object2, "-", 0);
     }
 }
 
 #endif