text: /*
   * 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.
   *
   */
  
  #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_CSS_RESOLVER_ELEMENT_RESOLVE_CONTEXT_H_
  #define THIRD_PARTY_BLINK_RENDERER_CORE_CSS_RESOLVER_ELEMENT_RESOLVE_CONTEXT_H_
  
  #include "third_party/blink/renderer/core/dom/element.h"
  #include "third_party/blink/renderer/core/style/computed_style_constants.h"
  
  namespace blink {
  
  class ContainerNode;
  class Document;
  class Element;
  class ComputedStyle;
  
  // Wraps an Element for use by ElementRuleCollector. Computes various values
  // from the element for quick access during style calculation. It is immutable.
  class CORE_EXPORT ElementResolveContext {
    STACK_ALLOCATED();
  
   public:
    explicit ElementResolveContext(const Document&);
  
    explicit ElementResolveContext(Element&);
  
    Element* GetElement() const { return element_; }
    const ContainerNode* ParentNode() const { return parent_node_; }
    const ContainerNode* LayoutParent() const { return layout_parent_; }
    const ComputedStyle* RootElementStyle() const {
      return root_element_style_.get();
    }
    const ComputedStyle* ParentStyle() const {
      return ParentNode() && ParentNode()->IsElementNode()
                 ? ParentNode()->GetComputedStyle()
                 : nullptr;
    }
    const ComputedStyle* LayoutParentStyle() const {
      return LayoutParent() ? LayoutParent()->GetComputedStyle() : nullptr;
    }
    EInsideLink ElementLinkState() const { return element_link_state_; }
    bool DistributedToV0InsertionPoint() const {
      return distributed_to_insertion_point_;
    }
  
   private:
    Member<Element> element_;
    Member<ContainerNode> parent_node_;
    Member<ContainerNode> layout_parent_;
    scoped_refptr<const ComputedStyle> root_element_style_;
    EInsideLink element_link_state_;
    bool distributed_to_insertion_point_;
  };
  
  }  // namespace blink
  
  #endif  // THIRD_PARTY_BLINK_RENDERER_CORE_CSS_RESOLVER_ELEMENT_RESOLVE_CONTEXT_H_
  