webengine/osswebengine/WebCore/loader/CachedXSLStyleSheet.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 03 May 2010 13:32:15 +0300
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Revision: 201015 Kit: 201018
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/*
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    This file is part of the KDE libraries
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    Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
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    Copyright (C) 2001 Dirk Mueller (mueller@kde.org)
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    Copyright (C) 2002 Waldo Bastian (bastian@kde.org)
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    Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
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    Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Library General Public
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    License as published by the Free Software Foundation; either
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    version 2 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Library General Public License for more details.
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    You should have received a copy of the GNU Library General Public License
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    along with this library; see the file COPYING.LIB.  If not, write to
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    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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    Boston, MA 02110-1301, USA.
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    This class provides all functionality needed for loading images, style sheets and html
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    pages from the web. It has a memory cache for these objects.
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*/
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#include "config.h"
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#include "CachedXSLStyleSheet.h"
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#include "Cache.h"
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#include "CachedResourceClient.h"
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#include "CachedResourceClientWalker.h"
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#include "TextResourceDecoder.h"
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#include "loader.h"
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#include <wtf/Vector.h>
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namespace WebCore {
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#if ENABLE(XSLT)
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CachedXSLStyleSheet::CachedXSLStyleSheet(DocLoader* dl, const String &url)
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    : CachedResource(url, XSLStyleSheet)
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    , m_decoder(new TextResourceDecoder("text/xsl"))
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{
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    // It's XML we want.
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    // FIXME: This should accept more general xml formats */*+xml, image/svg+xml for example.
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    setAccept("text/xml, application/xml, application/xhtml+xml, text/xsl, application/rss+xml, application/atom+xml");
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    // load the file
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    cache()->loader()->load(dl, this, false);
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    m_loading = true;
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}
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void CachedXSLStyleSheet::ref(CachedResourceClient *c)
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{
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    CachedResource::ref(c);
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    if (!m_loading)
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        c->setXSLStyleSheet(m_url, m_sheet);
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}
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void CachedXSLStyleSheet::setEncoding(const String& chs)
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{
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    m_decoder->setEncoding(chs, TextResourceDecoder::EncodingFromHTTPHeader);
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}
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void CachedXSLStyleSheet::data(PassRefPtr<SharedBuffer> data, bool allDataReceived)
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{
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    if (!allDataReceived)
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        return;
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    m_data = data;     
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    setEncodedSize(m_data.get() ? m_data->size() : 0);
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    if (m_data.get()) {
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        m_sheet = String(m_decoder->decode(m_data->data(), encodedSize()));
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        m_sheet += m_decoder->flush();
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    }
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    m_loading = false;
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    checkNotify();
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}
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void CachedXSLStyleSheet::checkNotify()
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{
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    if (m_loading)
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        return;
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    CachedResourceClientWalker w(m_clients);
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    while (CachedResourceClient *c = w.next())
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        c->setXSLStyleSheet(m_url, m_sheet);
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}
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void CachedXSLStyleSheet::error()
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{
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    m_loading = false;
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    m_errorOccurred = true;
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    checkNotify();
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}
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#endif
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}