text: /*
   * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
   *           (C) 1999 Antti Koivisto (koivisto@kde.org)
   *           (C) 2001 Dirk Mueller (mueller@kde.org)
   *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
   * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
   * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
   * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
   * Copyright (C) 2013 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
   * 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.
   *
   */
  
  #ifndef ShadowTreeStyleSheetCollection_h
  #define ShadowTreeStyleSheetCollection_h
  
  #include "core/dom/TreeScopeStyleSheetCollection.h"
  
  namespace blink {
  
  class ShadowRoot;
  class StyleSheetCollection;
  class StyleEngine;
  
  class ShadowTreeStyleSheetCollection final : public TreeScopeStyleSheetCollection {
      WTF_MAKE_NONCOPYABLE(ShadowTreeStyleSheetCollection);
  public:
      explicit ShadowTreeStyleSheetCollection(ShadowRoot&);
  
      void updateActiveStyleSheets(StyleEngine&, StyleResolverUpdateMode);
  
      DEFINE_INLINE_VIRTUAL_TRACE()
      {
          TreeScopeStyleSheetCollection::trace(visitor);
      }
  
  private:
      void collectStyleSheets(StyleEngine&, StyleSheetCollection&);
  };
  
  } // namespace blink
  
  #endif
  
  