/* * 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(), 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(); } }