CSS Custom Properties (Variables)

Source/core/css/resolver/StyleResolverState.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #include "config.h"
 #include "core/css/resolver/StyleResolverState.h"
 
 #include "core/animation/css/CSSAnimations.h"
 #include "core/dom/Node.h"
 #include "core/dom/NodeComputedStyle.h"
+#include "core/dom/StyleEngine.h"
 #include "core/frame/FrameHost.h"
 
 namespace blink {
 
 StyleResolverState::StyleResolverState(Document& document, const ElementResolveContext& elementContext, const ComputedStyle* parentStyle)
     : m_elementContext(elementContext)
     , m_document(document)
     , m_style(nullptr)
     // TODO(jchaffraix): We should make m_parentStyle const (https://crbug.com/468152)
     , m_parentStyle(const_cast<ComputedStyle*>(parentStyle))
@@ skipping 18 matching lines @@
 
 StyleResolverState::~StyleResolverState()
 {
 }
 
 void StyleResolverState::setAnimationUpdate(PassOwnPtrWillBeRawPtr<CSSAnimationUpdate> update)
 {
     m_animationUpdate = update;
 }
 
+bool StyleResolverState::documentUsesCSSVariables() const
+{
+    return m_document->styleEngine().usesVariables();
+}
+
 PassOwnPtrWillBeRawPtr<CSSAnimationUpdate> StyleResolverState::takeAnimationUpdate()
 {
     return m_animationUpdate.release();
 }
 
 } // namespace blink