CachedScript.h   [plain text]

    Copyright (C) 1998 Lars Knoll (
    Copyright (C) 2001 Dirk Mueller <>
    Copyright (C) 2006 Samuel Weinig (
    Copyright (C) 2004, 2005, 2006, 2007, 2008 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
    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.

#ifndef CachedScript_h
#define CachedScript_h

#include "CachedResource.h"
#include "Timer.h"

#if USE(JSC)
namespace JSC {
    class SourceProviderCache;

namespace WebCore {

    class CachedResourceLoader;
    class TextResourceDecoder;

    class CachedScript : public CachedResource {
        CachedScript(const ResourceRequest&, const String& charset);
        virtual ~CachedScript();

        const String& script();

        virtual void didAddClient(CachedResourceClient*);
        virtual void allClientsRemoved();

        virtual void setEncoding(const String&);
        virtual String encoding() const;
        virtual void data(PassRefPtr<SharedBuffer> data, bool allDataReceived);
        virtual void error(Status);

        virtual void destroyDecodedData();
#if USE(JSC)        
        // Allows JSC to cache additional information about the source.
        JSC::SourceProviderCache* sourceProviderCache() const;
        void sourceProviderCacheSizeChanged(int delta);
        void decodedDataDeletionTimerFired(Timer<CachedScript>*);
        virtual PurgePriority purgePriority() const { return PurgeLast; }

        String m_script;
        RefPtr<TextResourceDecoder> m_decoder;
        Timer<CachedScript> m_decodedDataDeletionTimer;
#if USE(JSC)        
        mutable OwnPtr<JSC::SourceProviderCache> m_sourceProviderCache;