--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/dom/StyleElement.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,118 @@
+/*
+ * 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 "Attribute.h"
+#include "Document.h"
+#include "Element.h"
+#include "MediaList.h"
+#include "MediaQueryEvaluator.h"
+
+namespace WebCore {
+
+StyleElement::StyleElement()
+{
+}
+
+StyleSheet* StyleElement::sheet(Element* e)
+{
+    if (!m_sheet)
+        createSheet(e, 0);
+    return m_sheet.get();
+}
+
+void StyleElement::insertedIntoDocument(Document*, Element* element)
+{
+    process(element, 0);
+}
+
+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, int startLineNumber)
+{
+    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, startLineNumber, sheetText);
+}
+
+void StyleElement::createSheet(Element* e, int startLineNumber, 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->parseStringAtLine(text, !document->inCompatMode(), startLineNumber);
+            m_sheet->setMedia(mediaList.get());
+            m_sheet->setTitle(e->title());
+            setLoading(false);
+        }
+    }
+
+    if (m_sheet)
+        m_sheet->checkLoaded();
+}
+
+}