/*

    Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)

    Copyright (C) 2001 Dirk Mueller (mueller@kde.org)

    Copyright (C) 2002 Waldo Bastian (bastian@kde.org)

    Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)

    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

    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.

*/

#include "config.h"

#include "CachedScript.h"

#include "CachedResourceClient.h"

#include "CachedResourceClientWalker.h"

#include "SharedBuffer.h"

#include "TextResourceDecoder.h"

#include <wtf/Vector.h>

namespace WebCore {

CachedScript::CachedScript(const String& url, const String& charset)

    : CachedResource(url, Script)

    , m_decoder(TextResourceDecoder::create("application/javascript", charset))

    , m_decodedDataDeletionTimer(this, &CachedScript::decodedDataDeletionTimerFired)

{

    // It's javascript we want.

    // But some websites think their scripts are <some wrong mimetype here>

    // and refuse to serve them if we only accept application/x-javascript.

    setAccept("*/*");

}

CachedScript::~CachedScript()

{

}

void CachedScript::allClientsRemoved()

{

    m_decodedDataDeletionTimer.startOneShot(0);

}

void CachedScript::setEncoding(const String& chs)

{

    m_decoder->setEncoding(chs, TextResourceDecoder::EncodingFromHTTPHeader);

}

String CachedScript::encoding() const

{

    return m_decoder->encoding().name();

}

const String& CachedScript::script()

{

    ASSERT(!isPurgeable());

    if (!m_script && m_data) {

        m_script = m_decoder->decode(m_data->data(), encodedSize());

        m_script += m_decoder->flush();

        setDecodedSize(m_script.length() * sizeof(UChar));

    }

    m_decodedDataDeletionTimer.startOneShot(0);

    return m_script;

}

void CachedScript::data(PassRefPtr<SharedBuffer> data, bool allDataReceived)

{

    if (!allDataReceived)

        return;

    m_data = data;

    setEncodedSize(m_data.get() ? m_data->size() : 0);

    setLoading(false);

    checkNotify();

}

void CachedScript::checkNotify()

{

    if (isLoading())

        return;

    CachedResourceClientWalker w(m_clients);

    while (CachedResourceClient* c = w.next())

        c->notifyFinished(this);

}

void CachedScript::error()

{

    setLoading(false);

    setErrorOccurred(true);

    checkNotify();

}

void CachedScript::destroyDecodedData()

{

    m_script = String();

    setDecodedSize(0);

    if (isSafeToMakePurgeable())

        makePurgeable(true);

}

void CachedScript::decodedDataDeletionTimerFired(Timer<CachedScript>*)

{

    destroyDecodedData();

}

} // namespace WebCore