Support display: contents for elements, first-line and first-letter pseudos.

third_party/WebKit/Source/core/dom/Text.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 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.
@@ skipping 332 matching lines @@
   if (isSVGText(this))
     return new LayoutSVGInlineText(this, dataImpl());
 
   if (style.hasTextCombine())
     return new LayoutTextCombine(this, dataImpl());
 
   return new LayoutText(this, dataImpl());
 }
 
 void Text::attachLayoutTree(const AttachContext& context) {
-  if (ContainerNode* layoutParent = LayoutTreeBuilderTraversal::parent(*this)) {
-    if (LayoutObject* parentLayoutObject = layoutParent->layoutObject()) {
-      if (textLayoutObjectIsNeeded(*parentLayoutObject->style(),
-                                   *parentLayoutObject))
-        LayoutTreeBuilderForText(*this, parentLayoutObject)
-            .createLayoutObject();
+  ContainerNode* styleParent = LayoutTreeBuilderTraversal::parent(*this);
+  LayoutObject* parentLayoutObject =
+      LayoutTreeBuilderTraversal::parentLayoutObject(*this);
+
+  if (styleParent && parentLayoutObject) {
+    DCHECK(styleParent->computedStyle());
+    if (textLayoutObjectIsNeeded(*styleParent->computedStyle(),
+                                 *parentLayoutObject)) {
+      LayoutTreeBuilderForText(*this, parentLayoutObject,
+                               styleParent->mutableComputedStyle())
+          .createLayoutObject();
     }
   }
   CharacterData::attachLayoutTree(context);
 }
 
 void Text::reattachLayoutTreeIfNeeded(const AttachContext& context) {
   bool layoutObjectIsNeeded = false;
-  ContainerNode* layoutParent = LayoutTreeBuilderTraversal::parent(*this);
-  if (layoutParent) {
-    if (LayoutObject* parentLayoutObject = layoutParent->layoutObject()) {
-      if (textLayoutObjectIsNeeded(*parentLayoutObject->style(),
-                                   *parentLayoutObject))
-        layoutObjectIsNeeded = true;
-    }
+  ContainerNode* styleParent = LayoutTreeBuilderTraversal::parent(*this);
+  LayoutObject* parentLayoutObject =
+      LayoutTreeBuilderTraversal::parentLayoutObject(*this);
+  if (styleParent && parentLayoutObject) {
+    layoutObjectIsNeeded = textLayoutObjectIsNeeded(
+        *styleParent->computedStyle(), *parentLayoutObject);
   }
 
   if (layoutObjectIsNeeded == !!layoutObject())
     return;
 
   // The following is almost the same as Node::reattachLayoutTree() except that
   // we create a layoutObject only if needed.  Not calling reattachLayoutTree()
   // to avoid repeated calls to Text::textLayoutObjectIsNeeded().
   AttachContext reattachContext(context);
   reattachContext.performingReattach = true;
 
   if (getStyleChangeType() < NeedsReattachStyleChange)
     detachLayoutTree(reattachContext);
-  if (layoutObjectIsNeeded)
-    LayoutTreeBuilderForText(*this, layoutParent->layoutObject())
+  if (layoutObjectIsNeeded) {
+    LayoutTreeBuilderForText(*this, parentLayoutObject,
+                             styleParent->mutableComputedStyle())
         .createLayoutObject();
+  }
   CharacterData::attachLayoutTree(reattachContext);
 }
 
 void Text::recalcTextStyle(StyleRecalcChange change, Text* nextTextSibling) {
   if (LayoutTextItem layoutItem = LayoutTextItem(this->layoutObject())) {
     if (change != NoChange || needsStyleRecalc())
       layoutItem.setStyle(document().ensureStyleResolver().styleForText(this));
     if (needsStyleRecalc())
       layoutItem.setText(dataImpl());
     clearNeedsStyleRecalc();
@@ skipping 47 matching lines @@
 
 Text* Text::cloneWithData(const String& data) {
   return create(document(), data);
 }
 
 DEFINE_TRACE(Text) {
   CharacterData::trace(visitor);
 }
 
 }  // namespace blink