blob: 7ba9845fdbaf0e420e3eedde926e972013858de1 [file] [log] [blame]
/*
* This file is part of the XSL implementation.
*
* Copyright (C) 2004, 2005, 2006, 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.
*/
#include "config.h"
#include "core/xml/XSLImportRule.h"
#include "core/dom/Document.h"
#include "core/fetch/FetchInitiatorTypeNames.h"
#include "core/fetch/FetchRequest.h"
#include "core/fetch/RawResource.h"
#include "core/fetch/ResourceFetcher.h"
#include "core/fetch/XSLStyleSheetResource.h"
#include "platform/SharedBuffer.h"
#include "wtf/text/TextEncoding.h"
namespace blink {
XSLImportRule::XSLImportRule(XSLStyleSheet* parent, const String& href)
: m_parentStyleSheet(parent)
, m_strHref(href)
, m_loading(false)
{
}
XSLImportRule::~XSLImportRule()
{
#if !ENABLE(OILPAN)
if (m_styleSheet)
m_styleSheet->setParentStyleSheet(0);
#endif
}
void XSLImportRule::setXSLStyleSheet(const String& href, const KURL& baseURL, const String& sheet)
{
if (m_styleSheet)
m_styleSheet->setParentStyleSheet(0);
m_styleSheet = XSLStyleSheet::create(this, href, baseURL);
XSLStyleSheet* parent = parentStyleSheet();
if (parent)
m_styleSheet->setParentStyleSheet(parent);
m_styleSheet->parseString(sheet);
m_loading = false;
if (parent)
parent->checkLoaded();
}
bool XSLImportRule::isLoading()
{
return m_loading || (m_styleSheet && m_styleSheet->isLoading());
}
void XSLImportRule::loadSheet()
{
Document* ownerDocument = nullptr;
XSLStyleSheet* rootSheet = parentStyleSheet();
if (rootSheet) {
while (XSLStyleSheet* parentSheet = rootSheet->parentStyleSheet())
rootSheet = parentSheet;
}
if (rootSheet)
ownerDocument = rootSheet->ownerDocument();
String absHref = m_strHref;
XSLStyleSheet* parentSheet = parentStyleSheet();
if (!parentSheet->baseURL().isNull()) {
// Use parent styleheet's URL as the base URL
absHref = KURL(parentSheet->baseURL(), m_strHref).string();
}
// Check for a cycle in our import chain. If we encounter a stylesheet in
// our parent chain with the same URL, then just bail.
for (XSLStyleSheet* parentSheet = parentStyleSheet(); parentSheet; parentSheet = parentSheet->parentStyleSheet()) {
if (absHref == parentSheet->baseURL().string())
return;
}
ResourceLoaderOptions fetchOptions(ResourceFetcher::defaultResourceOptions());
FetchRequest request(ResourceRequest(ownerDocument->completeURL(absHref)), FetchInitiatorTypeNames::xml, fetchOptions);
request.setOriginRestriction(FetchRequest::RestrictToSameOrigin);
ResourcePtr<Resource> resource = RawResource::fetchSynchronously(request, ownerDocument->fetcher());
if (!resource)
return;
ASSERT(!m_styleSheet);
if (SharedBuffer* data = resource->resourceBuffer())
setXSLStyleSheet(absHref, resource->response().url(), UTF8Encoding().decode(data->data(), data->size()));
}
DEFINE_TRACE(XSLImportRule)
{
visitor->trace(m_parentStyleSheet);
visitor->trace(m_styleSheet);
}
} // namespace blink