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/*
* 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 "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/loader/resource/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() {}
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).getString();
}
// 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().getString())
return;
}
ResourceLoaderOptions fetchOptions(ResourceFetcher::defaultResourceOptions());
FetchRequest request(ResourceRequest(ownerDocument->completeURL(absHref)),
FetchInitiatorTypeNames::xml, fetchOptions);
request.setOriginRestriction(FetchRequest::RestrictToSameOrigin);
XSLStyleSheetResource* resource = XSLStyleSheetResource::fetchSynchronously(
request, ownerDocument->fetcher());
if (!resource || !resource->sheet())
return;
DCHECK(!m_styleSheet);
setXSLStyleSheet(absHref, resource->response().url(), resource->sheet());
}
DEFINE_TRACE(XSLImportRule) {
visitor->trace(m_parentStyleSheet);
visitor->trace(m_styleSheet);
}
} // namespace blink
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