text: /*
   * Copyright (C) 2014 Google Inc. All Rights Reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
   * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
   * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   */
  
  #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_DOM_EVENTS_NODE_EVENT_CONTEXT_H_
  #define THIRD_PARTY_BLINK_RENDERER_CORE_DOM_EVENTS_NODE_EVENT_CONTEXT_H_
  
  #include "base/memory/scoped_refptr.h"
  #include "third_party/blink/renderer/core/core_export.h"
  #include "third_party/blink/renderer/core/dom/events/tree_scope_event_context.h"
  
  namespace blink {
  
  class EventTarget;
  class Node;
  class TouchEventContext;
  
  class CORE_EXPORT NodeEventContext {
    DISALLOW_NEW();
  
   public:
    // FIXME: Use ContainerNode instead of Node.
    NodeEventContext(Node&, EventTarget& current_target);
    void Trace(Visitor*) const;
  
    Node& GetNode() const { return *node_; }
  
    void SetTreeScopeEventContext(
        TreeScopeEventContext* tree_scope_event_context) {
      tree_scope_event_context_ = tree_scope_event_context;
    }
    TreeScopeEventContext& GetTreeScopeEventContext() {
      DCHECK(tree_scope_event_context_);
      return *tree_scope_event_context_;
    }
  
    EventTarget* Target() const { return tree_scope_event_context_->Target(); }
    EventTarget* RelatedTarget() const {
      return tree_scope_event_context_->RelatedTarget();
    }
    TouchEventContext* GetTouchEventContext() const {
      return tree_scope_event_context_->GetTouchEventContext();
    }
  
    bool CurrentTargetSameAsTarget() const {
      return current_target_.Get() == Target();
    }
    void HandleLocalEvents(Event&) const;
  
   private:
    Member<Node> node_;
    Member<EventTarget> current_target_;
    Member<TreeScopeEventContext> tree_scope_event_context_;
  };
  
  }  // namespace blink
  
  namespace WTF {
  
  template <>
  struct VectorTraits<blink::NodeEventContext>
      : SimpleClassVectorTraits<blink::NodeEventContext> {
    static constexpr bool kCanTraceConcurrently = true;
  };
  
  }  // namespace WTF
  
  #endif  // THIRD_PARTY_BLINK_RENDERER_CORE_DOM_EVENTS_NODE_EVENT_CONTEXT_H_
  