third_party/WebKit/Source/core/fetch/DocumentResourceReference.h

/*
 * Copyright (C) 2012 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 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 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.
 */

#ifndef DocumentResourceReference_h
#define DocumentResourceReference_h

#include "core/fetch/DocumentResource.h"
#include "platform/heap/Handle.h"

namespace blink {

class DocumentResourceReference final : public GarbageCollectedFinalized<DocumentResourceReference>, public DocumentResourceClient {
    USING_GARBAGE_COLLECTED_MIXIN(DocumentResourceReference);
    USING_PRE_FINALIZER(DocumentResourceReference, removeSelf);
public:
    DocumentResourceReference(DocumentResource* document)
        : m_document(document)
    {
        ThreadState::current()->registerPreFinalizer(this);
        m_document->addClient(this);
    }
    ~DocumentResourceReference() override {}
    DocumentResource* document() { return m_document.get(); }
    DEFINE_INLINE_TRACE()
    {
        visitor->trace(m_document);
        DocumentResourceClient::trace(visitor);
    }

private:
    void removeSelf() { m_document->removeClient(this); }

    String debugName() const override { return "DocumentResourceReference"; }
    Member<DocumentResource> m_document;
};

} // namespace blink

#endif