text: /*
   * Copyright (C) 2010-2017 Apple 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 INC. AND ITS CONTRIBUTORS ``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 INC. OR ITS 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.
   */
  
  #pragma once
  
  #include "APIObject.h"
  #include "MessageReceiver.h"
  #include "SharedStringHashStore.h"
  #include "WebPageProxyIdentifier.h"
  #include <wtf/Forward.h>
  #include <wtf/Identified.h>
  #include <wtf/RefCounted.h>
  #include <wtf/WeakHashSet.h>
  
  namespace WebKit {
  
  class WebProcessProxy;
      
  class VisitedLinkStore final : public API::ObjectImpl<API::Object::Type::VisitedLinkStore>, private IPC::MessageReceiver, public Identified<VisitedLinkStore>, private SharedStringHashStore::Client {
  public:
      static Ref<VisitedLinkStore> create();
      VisitedLinkStore();
  
      virtual ~VisitedLinkStore();
  
      void addProcess(WebProcessProxy&);
      void removeProcess(WebProcessProxy&);
  
      void addVisitedLinkHash(WebCore::SharedStringHash);
      bool containsVisitedLinkHash(WebCore::SharedStringHash);
      void removeVisitedLinkHash(WebCore::SharedStringHash);
      void removeAll();
  
  private:
      // IPC::MessageReceiver
      void didReceiveMessage(IPC::Connection&, IPC::Decoder&) final;
  
      // SharedStringHashStore::Client
      void didInvalidateSharedMemory() final;
      void didUpdateSharedStringHashes(const Vector<WebCore::SharedStringHash>& addedHashes, const Vector<WebCore::SharedStringHash>& removedHashes) final;
  
      void addVisitedLinkHashFromPage(WebPageProxyIdentifier, WebCore::SharedStringHash);
  
      void sendStoreHandleToProcess(WebProcessProxy&);
  
      WeakHashSet<WebProcessProxy> m_processes;
      SharedStringHashStore m_linkHashStore;
  };
  
  } // namespace WebKit
  