/* | |
* Copyright (C) 2006, 2007 Rob Buis | |
* Copyright (C) 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 "StyleElement.h" | |
#include "Document.h" | |
#include "Element.h" | |
#include "MappedAttribute.h" | |
#include "MediaList.h" | |
#include "MediaQueryEvaluator.h" | |
namespace WebCore { | |
StyleElement::StyleElement() | |
{ | |
} | |
StyleSheet* StyleElement::sheet(Element* e) | |
{ | |
if (!m_sheet) | |
createSheet(e); | |
return m_sheet.get(); | |
} | |
void StyleElement::insertedIntoDocument(Document*, Element* element) | |
{ | |
process(element); | |
} | |
void StyleElement::removedFromDocument(Document* document) | |
{ | |
// If we're in document teardown, then we don't need to do any notification of our sheet's removal. | |
if (!document->renderer()) | |
return; | |
// FIXME: It's terrible to do a synchronous update of the style selector just because a <style> or <link> element got removed. | |
if (m_sheet) | |
document->updateStyleSelector(); | |
} | |
void StyleElement::process(Element* e) | |
{ | |
if (!e || !e->inDocument()) | |
return; | |
unsigned resultLength = 0; | |
for (Node* c = e->firstChild(); c; c = c->nextSibling()) { | |
Node::NodeType nodeType = c->nodeType(); | |
if (nodeType == Node::TEXT_NODE || nodeType == Node::CDATA_SECTION_NODE || nodeType == Node::COMMENT_NODE) | |
resultLength += c->nodeValue().length(); | |
} | |
UChar* text; | |
String sheetText = String::createUninitialized(resultLength, text); | |
UChar* p = text; | |
for (Node* c = e->firstChild(); c; c = c->nextSibling()) { | |
Node::NodeType nodeType = c->nodeType(); | |
if (nodeType == Node::TEXT_NODE || nodeType == Node::CDATA_SECTION_NODE || nodeType == Node::COMMENT_NODE) { | |
String nodeValue = c->nodeValue(); | |
unsigned nodeLength = nodeValue.length(); | |
memcpy(p, nodeValue.characters(), nodeLength * sizeof(UChar)); | |
p += nodeLength; | |
} | |
} | |
ASSERT(p == text + resultLength); | |
createSheet(e, sheetText); | |
} | |
void StyleElement::createSheet(Element* e, const String& text) | |
{ | |
Document* document = e->document(); | |
if (m_sheet) { | |
if (static_cast<CSSStyleSheet*>(m_sheet.get())->isLoading()) | |
document->removePendingSheet(); | |
m_sheet = 0; | |
} | |
// If type is empty or CSS, this is a CSS style sheet. | |
const AtomicString& type = this->type(); | |
if (type.isEmpty() || (e->isHTMLElement() ? equalIgnoringCase(type, "text/css") : (type == "text/css"))) { | |
RefPtr<MediaList> mediaList = MediaList::create(media(), e->isHTMLElement()); | |
MediaQueryEvaluator screenEval("screen", true); | |
MediaQueryEvaluator printEval("print", true); | |
if (screenEval.eval(mediaList.get()) || printEval.eval(mediaList.get())) { | |
document->addPendingSheet(); | |
setLoading(true); | |
m_sheet = CSSStyleSheet::create(e, String(), KURL(), document->inputEncoding()); | |
m_sheet->parseString(text, !document->inCompatMode()); | |
m_sheet->setMedia(mediaList.get()); | |
m_sheet->setTitle(e->title()); | |
setLoading(false); | |
} | |
} | |
if (m_sheet) | |
m_sheet->checkLoaded(); | |
} | |
} |