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/*
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 "MemoryCache.h"
#include "CachedResourceClient.h"
#include "CachedResourceClientWalker.h"
#include "SharedBuffer.h"
#include "TextResourceDecoder.h"
#include <wtf/Vector.h>
#if USE(JSC)
#include <parser/SourceProvider.h>
#endif
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::didAddClient(CachedResourceClient* c)
{
if (m_decodedDataDeletionTimer.isActive())
m_decodedDataDeletionTimer.stop();
CachedResource::didAddClient(c);
}
void CachedScript::allClientsRemoved()
{
if (double interval = memoryCache()->deadDecodedDataDeletionInterval())
m_decodedDataDeletionTimer.startOneShot(interval);
}
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::error(CachedResource::Status status)
{
setStatus(status);
ASSERT(errorOccurred());
setLoading(false);
checkNotify();
}
void CachedScript::destroyDecodedData()
{
m_script = String();
unsigned extraSize = 0;
#if USE(JSC)
if (m_sourceProviderCache && m_clients.isEmpty())
m_sourceProviderCache->clear();
extraSize = m_sourceProviderCache ? m_sourceProviderCache->byteSize() : 0;
#endif
setDecodedSize(extraSize);
if (!MemoryCache::shouldMakeResourcePurgeableOnEviction() && isSafeToMakePurgeable())
makePurgeable(true);
}
void CachedScript::decodedDataDeletionTimerFired(Timer<CachedScript>*)
{
destroyDecodedData();
}
#if USE(JSC)
JSC::SourceProviderCache* CachedScript::sourceProviderCache() const
{
if (!m_sourceProviderCache)
m_sourceProviderCache = adoptPtr(new JSC::SourceProviderCache);
return m_sourceProviderCache.get();
}
void CachedScript::sourceProviderCacheSizeChanged(int delta)
{
setDecodedSize(decodedSize() + delta);
}
#endif
} // namespace WebCore
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