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/*
* Copyright (C) 2000 Peter Kelly (pmk@post.com)
* Copyright (C) 2006, 2008, 2009 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/dom/ProcessingInstruction.h"
#include "core/FetchInitiatorTypeNames.h"
#include "core/css/CSSStyleSheet.h"
#include "core/css/MediaList.h"
#include "core/css/StyleSheetContents.h"
#include "core/dom/Document.h"
#include "core/dom/StyleEngine.h"
#include "core/fetch/CSSStyleSheetResource.h"
#include "core/fetch/FetchRequest.h"
#include "core/fetch/ResourceFetcher.h"
#include "core/fetch/XSLStyleSheetResource.h"
#include "core/xml/XSLStyleSheet.h"
#include "core/xml/parser/XMLDocumentParser.h" // for parseAttributes()
namespace blink {
inline ProcessingInstruction::ProcessingInstruction(Document& document, const String& target, const String& data)
: CharacterData(document, data, CreateOther)
, m_target(target)
, m_loading(false)
, m_alternate(false)
, m_createdByParser(false)
, m_isCSS(false)
, m_isXSL(false)
{
ScriptWrappable::init(this);
}
PassRefPtrWillBeRawPtr<ProcessingInstruction> ProcessingInstruction::create(Document& document, const String& target, const String& data)
{
return adoptRefWillBeNoop(new ProcessingInstruction(document, target, data));
}
ProcessingInstruction::~ProcessingInstruction()
{
#if !ENABLE(OILPAN)
if (m_sheet)
clearSheet();
// FIXME: ProcessingInstruction should not be in document here.
// However, if we add ASSERT(!inDocument()), fast/xsl/xslt-entity.xml
// crashes. We need to investigate ProcessingInstruction lifetime.
if (inDocument()) {
if (m_isCSS)
document().styleEngine()->removeStyleSheetCandidateNode(this);
else if (m_isXSL)
document().styleEngine()->removeXSLStyleSheet(this);
}
#endif
}
String ProcessingInstruction::nodeName() const
{
return m_target;
}
Node::NodeType ProcessingInstruction::nodeType() const
{
return PROCESSING_INSTRUCTION_NODE;
}
PassRefPtrWillBeRawPtr<Node> ProcessingInstruction::cloneNode(bool /*deep*/)
{
// FIXME: Is it a problem that this does not copy m_localHref?
// What about other data members?
return create(document(), m_target, m_data);
}
void ProcessingInstruction::didAttributeChanged()
{
if (m_sheet)
clearSheet();
String href;
String charset;
if (!checkStyleSheet(href, charset))
return;
process(href, charset);
}
bool ProcessingInstruction::checkStyleSheet(String& href, String& charset)
{
if (m_target != "xml-stylesheet" || !document().frame() || parentNode() != document())
return false;
// see http://www.w3.org/TR/xml-stylesheet/
// ### support stylesheet included in a fragment of this (or another) document
// ### make sure this gets called when adding from javascript
bool attrsOk;
const HashMap<String, String> attrs = parseAttributes(m_data, attrsOk);
if (!attrsOk)
return false;
HashMap<String, String>::const_iterator i = attrs.find("type");
String type;
if (i != attrs.end())
type = i->value;
m_isCSS = type.isEmpty() || type == "text/css";
m_isXSL = (type == "text/xml" || type == "text/xsl" || type == "application/xml" || type == "application/xhtml+xml" || type == "application/rss+xml" || type == "application/atom+xml");
if (!m_isCSS && !m_isXSL)
return false;
href = attrs.get("href");
charset = attrs.get("charset");
String alternate = attrs.get("alternate");
m_alternate = alternate == "yes";
m_title = attrs.get("title");
m_media = attrs.get("media");
return !m_alternate || !m_title.isEmpty();
}
void ProcessingInstruction::process(const String& href, const String& charset)
{
if (href.length() > 1 && href[0] == '#') {
m_localHref = href.substring(1);
// We need to make a synthetic XSLStyleSheet that is embedded.
// It needs to be able to kick off import/include loads that
// can hang off some parent sheet.
if (m_isXSL) {
KURL finalURL(ParsedURLString, m_localHref);
m_sheet = XSLStyleSheet::createEmbedded(this, finalURL);
m_loading = false;
}
return;
}
clearResource();
String url = document().completeURL(href).string();
ResourcePtr<StyleSheetResource> resource;
FetchRequest request(ResourceRequest(document().completeURL(href)), FetchInitiatorTypeNames::processinginstruction);
if (m_isXSL) {
resource = document().fetcher()->fetchXSLStyleSheet(request);
} else {
request.setCharset(charset.isEmpty() ? document().charset() : charset);
resource = document().fetcher()->fetchCSSStyleSheet(request);
}
if (resource) {
m_loading = true;
document().styleEngine()->addPendingSheet();
setResource(resource);
}
}
bool ProcessingInstruction::isLoading() const
{
if (m_loading)
return true;
if (!m_sheet)
return false;
return m_sheet->isLoading();
}
bool ProcessingInstruction::sheetLoaded()
{
if (!isLoading()) {
document().styleEngine()->removePendingSheet(this);
return true;
}
return false;
}
void ProcessingInstruction::setCSSStyleSheet(const String& href, const KURL& baseURL, const String& charset, const CSSStyleSheetResource* sheet)
{
if (!inDocument()) {
ASSERT(!m_sheet);
return;
}
ASSERT(m_isCSS);
CSSParserContext parserContext(document(), 0, baseURL, charset);
RefPtrWillBeRawPtr<StyleSheetContents> newSheet = StyleSheetContents::create(href, parserContext);
RefPtrWillBeRawPtr<CSSStyleSheet> cssSheet = CSSStyleSheet::create(newSheet, this);
cssSheet->setDisabled(m_alternate);
cssSheet->setTitle(m_title);
cssSheet->setMediaQueries(MediaQuerySet::create(m_media));
m_sheet = cssSheet.release();
// We don't need the cross-origin security check here because we are
// getting the sheet text in "strict" mode. This enforces a valid CSS MIME
// type.
parseStyleSheet(sheet->sheetText(true));
}
void ProcessingInstruction::setXSLStyleSheet(const String& href, const KURL& baseURL, const String& sheet)
{
if (!inDocument()) {
ASSERT(!m_sheet);
return;
}
ASSERT(m_isXSL);
m_sheet = XSLStyleSheet::create(this, href, baseURL);
RefPtrWillBeRawPtr<Document> protect(&document());
parseStyleSheet(sheet);
}
void ProcessingInstruction::parseStyleSheet(const String& sheet)
{
if (m_isCSS)
toCSSStyleSheet(m_sheet.get())->contents()->parseString(sheet);
else if (m_isXSL)
toXSLStyleSheet(m_sheet.get())->parseString(sheet);
clearResource();
m_loading = false;
if (m_isCSS)
toCSSStyleSheet(m_sheet.get())->contents()->checkLoaded();
else if (m_isXSL)
toXSLStyleSheet(m_sheet.get())->checkLoaded();
}
void ProcessingInstruction::setCSSStyleSheet(PassRefPtrWillBeRawPtr<CSSStyleSheet> sheet)
{
ASSERT(!resource());
ASSERT(!m_loading);
m_sheet = sheet;
sheet->setTitle(m_title);
sheet->setDisabled(m_alternate);
}
Node::InsertionNotificationRequest ProcessingInstruction::insertedInto(ContainerNode* insertionPoint)
{
CharacterData::insertedInto(insertionPoint);
if (!insertionPoint->inDocument())
return InsertionDone;
String href;
String charset;
bool isValid = checkStyleSheet(href, charset);
if (m_isCSS)
document().styleEngine()->addStyleSheetCandidateNode(this, m_createdByParser);
else if (m_isXSL)
document().styleEngine()->addXSLStyleSheet(this, m_createdByParser);
if (isValid)
process(href, charset);
return InsertionDone;
}
void ProcessingInstruction::removedFrom(ContainerNode* insertionPoint)
{
CharacterData::removedFrom(insertionPoint);
if (!insertionPoint->inDocument())
return;
if (m_isCSS)
document().styleEngine()->removeStyleSheetCandidateNode(this);
else if (m_isXSL)
document().styleEngine()->removeXSLStyleSheet(this);
RefPtrWillBeRawPtr<StyleSheet> removedSheet = m_sheet;
if (m_sheet) {
ASSERT(m_sheet->ownerNode() == this);
clearSheet();
}
// If we're in document teardown, then we don't need to do any notification of our sheet's removal.
if (document().isActive())
document().removedStyleSheet(removedSheet.get());
}
void ProcessingInstruction::clearSheet()
{
ASSERT(m_sheet);
if (m_sheet->isLoading())
document().styleEngine()->removePendingSheet(this);
m_sheet.release()->clearOwnerNode();
}
void ProcessingInstruction::trace(Visitor* visitor)
{
visitor->trace(m_sheet);
CharacterData::trace(visitor);
}
} // namespace