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/*
Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
Copyright (C) 2001 Dirk Mueller <mueller@kde.org>
Copyright (C) 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.
This class provides all functionality needed for loading images, style sheets and html
pages from the web. It has a memory cache for these objects.
*/
#pragma once
#include <wtf/HashSet.h>
#include <wtf/Noncopyable.h>
#include <wtf/WeakPtr.h>
namespace WebCore {
class CachedResource;
class NetworkLoadMetrics;
class CachedResourceClient : public CanMakeWeakPtr<CachedResourceClient> {
WTF_MAKE_NONCOPYABLE(CachedResourceClient);
public:
enum CachedResourceClientType {
BaseResourceType,
ImageType,
FontType,
StyleSheetType,
SVGDocumentType,
RawResourceType
};
virtual ~CachedResourceClient()
{
ASSERT(m_associatedResources.isEmpty());
}
virtual void notifyFinished(CachedResource&, const NetworkLoadMetrics&) { }
virtual void deprecatedDidReceiveCachedResource(CachedResource&) { }
static CachedResourceClientType expectedType() { return BaseResourceType; }
virtual CachedResourceClientType resourceClientType() const { return expectedType(); }
virtual bool shouldMarkAsReferenced() const { return true; }
#if ASSERT_ENABLED
void addAssociatedResource(CachedResource& resource)
{
m_associatedResources.add(&resource);
}
void removeAssociatedResource(CachedResource& resource)
{
m_associatedResources.remove(&resource);
}
#endif
protected:
CachedResourceClient() = default;
private:
#if ASSERT_ENABLED
HashSet<CachedResource*> m_associatedResources;
#endif
};
} // namespace WebCore
#define SPECIALIZE_TYPE_TRAITS_CACHED_RESOURCE_CLIENT(ToClassName, CachedResourceTypeValue) \
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::ToClassName) \
static bool isType(const WebCore::CachedResourceClient& client) { return client.resourceClientType() == WebCore::CachedResourceClient::CachedResourceTypeValue; } \
SPECIALIZE_TYPE_TRAITS_END()
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