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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 "ProcessingInstruction.h"
#include "CSSStyleSheet.h"
#include "CachedCSSStyleSheet.h"
#include "CachedXSLStyleSheet.h"
#include "Document.h"
#include "CachedResourceLoader.h"
#include "ExceptionCode.h"
#include "Frame.h"
#include "FrameLoader.h"
#include "XSLStyleSheet.h"
#include "XMLDocumentParser.h" // for parseAttributes()
#include "MediaList.h"
namespace WebCore {
inline ProcessingInstruction::ProcessingInstruction(Document* document, const String& target, const String& data)
: ContainerNode(document)
, m_target(target)
, m_data(data)
, m_cachedSheet(0)
, m_loading(false)
, m_alternate(false)
, m_createdByParser(false)
, m_isCSS(false)
#if ENABLE(XSLT)
, m_isXSL(false)
#endif
{
}
PassRefPtr<ProcessingInstruction> ProcessingInstruction::create(Document* document, const String& target, const String& data)
{
return adoptRef(new ProcessingInstruction(document, target, data));
}
ProcessingInstruction::~ProcessingInstruction()
{
if (m_sheet)
m_sheet->clearOwnerNode();
if (m_cachedSheet)
m_cachedSheet->removeClient(this);
}
void ProcessingInstruction::setData(const String& data, ExceptionCode&)
{
int oldLength = m_data.length();
m_data = data;
document()->textRemoved(this, 0, oldLength);
checkStyleSheet();
}
String ProcessingInstruction::nodeName() const
{
return m_target;
}
Node::NodeType ProcessingInstruction::nodeType() const
{
return PROCESSING_INSTRUCTION_NODE;
}
String ProcessingInstruction::nodeValue() const
{
return m_data;
}
void ProcessingInstruction::setNodeValue(const String& nodeValue, ExceptionCode& ec)
{
// NO_MODIFICATION_ALLOWED_ERR: taken care of by setData()
setData(nodeValue, ec);
}
PassRefPtr<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);
}
// DOM Section 1.1.1
bool ProcessingInstruction::childTypeAllowed(NodeType) const
{
return false;
}
void ProcessingInstruction::checkStyleSheet()
{
if (m_target == "xml-stylesheet" && document()->frame() && parentNode() == document()) {
// 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;
HashMap<String, String>::const_iterator i = attrs.find("type");
String type;
if (i != attrs.end())
type = i->second;
m_isCSS = type.isEmpty() || type == "text/css";
#if ENABLE(XSLT)
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)
#else
if (!m_isCSS)
#endif
return;
String href = attrs.get("href");
String alternate = attrs.get("alternate");
m_alternate = alternate == "yes";
m_title = attrs.get("title");
m_media = attrs.get("media");
if (href.length() > 1 && href[0] == '#') {
m_localHref = href.substring(1);
#if ENABLE(XSLT)
// 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;
}
#endif
} else {
if (m_cachedSheet) {
m_cachedSheet->removeClient(this);
m_cachedSheet = 0;
}
String url = document()->completeURL(href).string();
if (!dispatchBeforeLoadEvent(url))
return;
m_loading = true;
document()->addPendingSheet();
#if ENABLE(XSLT)
if (m_isXSL)
m_cachedSheet = document()->cachedResourceLoader()->requestXSLStyleSheet(url);
else
#endif
{
String charset = attrs.get("charset");
if (charset.isEmpty())
charset = document()->charset();
m_cachedSheet = document()->cachedResourceLoader()->requestCSSStyleSheet(url, charset);
}
if (m_cachedSheet)
m_cachedSheet->addClient(this);
else {
// The request may have been denied if (for example) the stylesheet is local and the document is remote.
m_loading = false;
document()->removePendingSheet();
}
}
}
}
bool ProcessingInstruction::isLoading() const
{
if (m_loading)
return true;
if (!m_sheet)
return false;
return m_sheet->isLoading();
}
bool ProcessingInstruction::sheetLoaded()
{
if (!isLoading()) {
document()->removePendingSheet();
return true;
}
return false;
}
void ProcessingInstruction::setCSSStyleSheet(const String& href, const KURL& baseURL, const String& charset, const CachedCSSStyleSheet* sheet)
{
if (!inDocument()) {
ASSERT(!m_sheet);
return;
}
ASSERT(m_isCSS);
RefPtr<CSSStyleSheet> newSheet = CSSStyleSheet::create(this, href, baseURL, charset);
m_sheet = newSheet;
// 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));
newSheet->setTitle(m_title);
newSheet->setMedia(MediaList::create(newSheet.get(), m_media));
newSheet->setDisabled(m_alternate);
}
#if ENABLE(XSLT)
void ProcessingInstruction::setXSLStyleSheet(const String& href, const KURL& baseURL, const String& sheet)
{
ASSERT(m_isXSL);
m_sheet = XSLStyleSheet::create(this, href, baseURL);
parseStyleSheet(sheet);
}
#endif
void ProcessingInstruction::parseStyleSheet(const String& sheet)
{
m_sheet->parseString(sheet, true);
if (m_cachedSheet)
m_cachedSheet->removeClient(this);
m_cachedSheet = 0;
m_loading = false;
m_sheet->checkLoaded();
}
void ProcessingInstruction::setCSSStyleSheet(PassRefPtr<CSSStyleSheet> sheet)
{
ASSERT(!m_cachedSheet);
ASSERT(!m_loading);
m_sheet = sheet;
m_sheet->setTitle(m_title);
m_sheet->setDisabled(m_alternate);
}
bool ProcessingInstruction::offsetInCharacters() const
{
return true;
}
int ProcessingInstruction::maxCharacterOffset() const
{
return static_cast<int>(m_data.length());
}
void ProcessingInstruction::addSubresourceAttributeURLs(ListHashSet<KURL>& urls) const
{
if (!sheet())
return;
addSubresourceURL(urls, sheet()->baseURL());
}
void ProcessingInstruction::insertedIntoDocument()
{
ContainerNode::insertedIntoDocument();
document()->addStyleSheetCandidateNode(this, m_createdByParser);
checkStyleSheet();
}
void ProcessingInstruction::removedFromDocument()
{
ContainerNode::removedFromDocument();
document()->removeStyleSheetCandidateNode(this);
if (m_sheet) {
ASSERT(m_sheet->ownerNode() == this);
m_sheet->clearOwnerNode();
m_sheet = 0;
}
if (m_cachedSheet)
document()->styleSelectorChanged(DeferRecalcStyle);
}
void ProcessingInstruction::finishParsingChildren()
{
m_createdByParser = false;
ContainerNode::finishParsingChildren();
}
} // namespace