Merge StyleElement into HTMLStyleElement.

sky/engine/core/dom/StyleElement.cpp

-/*
- * 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 "sky/engine/config.h"
-#include "sky/engine/core/dom/StyleElement.h"
-
-#include "sky/engine/bindings/core/v8/ScriptController.h"
-#include "sky/engine/core/css/MediaList.h"
-#include "sky/engine/core/css/MediaQueryEvaluator.h"
-#include "sky/engine/core/css/StyleSheetContents.h"
-#include "sky/engine/core/dom/Document.h"
-#include "sky/engine/core/dom/Element.h"
-#include "sky/engine/core/dom/StyleEngine.h"
-#include "sky/engine/core/frame/LocalFrame.h"
-#include "sky/engine/core/html/HTMLStyleElement.h"
-#include "sky/engine/core/html/parser/HTMLDocumentParser.h"
-#include "sky/engine/platform/TraceEvent.h"
-#include "sky/engine/wtf/text/StringBuilder.h"
-
-namespace blink {
-
-static bool isCSS(Element* element, const AtomicString& type)
-{
-    return type.isEmpty() || (element->isHTMLElement() ? equalIgnoringCase(type, "text/css") : (type == "text/css"));
-}
-
-StyleElement::StyleElement(Document* document, bool createdByParser)
-    : m_createdByParser(createdByParser)
-    , m_loading(false)
-    , m_registeredAsCandidate(false)
-    , m_startPosition(TextPosition::belowRangePosition())
-{
-    if (createdByParser)
-        m_startPosition = document->parserPosition();
-}
-
-StyleElement::~StyleElement()
-{
-#if !ENABLE(OILPAN)
-    if (m_sheet)
-        clearSheet();
-#endif
-}
-
-void StyleElement::processStyleSheet(Document& document, Element* element)
-{
-    TRACE_EVENT0("blink", "StyleElement::processStyleSheet");
-    ASSERT(element);
-    ASSERT(element->inDocument());
-
-    m_registeredAsCandidate = true;
-    document.styleEngine()->addStyleSheetCandidateNode(element, m_createdByParser);
-    if (m_createdByParser)
-        return;
-
-    process(element);
-}
-
-void StyleElement::removedFromDocument(Document& document, Element* element)
-{
-    removedFromDocument(document, element, 0, document);
-}
-
-void StyleElement::removedFromDocument(Document& document, Element* element, ContainerNode* scopingNode, TreeScope& treeScope)
-{
-    ASSERT(element);
-
-    if (m_registeredAsCandidate) {
-        document.styleEngine()->removeStyleSheetCandidateNode(element, scopingNode, treeScope);
-        m_registeredAsCandidate = false;
-    }
-
-    RefPtr<CSSStyleSheet> removedSheet = m_sheet.get();
-
-    if (m_sheet)
-        clearSheet(element);
-    if (removedSheet)
-        document.removedStyleSheet(removedSheet.get());
-}
-
-void StyleElement::clearDocumentData(Document& document, Element* element)
-{
-    if (m_sheet)
-        m_sheet->clearOwnerNode();
-
-    if (element->inDocument()) {
-        ContainerNode* scopingNode = isHTMLStyleElement(element) ? toHTMLStyleElement(element)->scopingNode() :  0;
-        TreeScope& treeScope = scopingNode ? scopingNode->treeScope() : element->treeScope();
-        document.styleEngine()->removeStyleSheetCandidateNode(element, scopingNode, treeScope);
-    }
-}
-
-void StyleElement::childrenChanged(Element* element)
-{
-    ASSERT(element);
-    if (m_createdByParser)
-        return;
-
-    process(element);
-}
-
-void StyleElement::finishParsingChildren(Element* element)
-{
-    ASSERT(element);
-    process(element);
-    m_createdByParser = false;
-}
-
-void StyleElement::process(Element* element)
-{
-    if (!element || !element->inDocument())
-        return;
-    createSheet(element, element->textFromChildren());
-}
-
-void StyleElement::clearSheet(Element* ownerElement)
-{
-    ASSERT(m_sheet);
-    m_sheet.release()->clearOwnerNode();
-}
-
-void StyleElement::createSheet(Element* e, const String& text)
-{
-    ASSERT(e);
-    ASSERT(e->inDocument());
-    Document& document = e->document();
-    if (m_sheet)
-        clearSheet(e);
-
-    // If type is empty or CSS, this is a CSS style sheet.
-    const AtomicString& type = this->type();
-    if (isCSS(e, type)) {
-        RefPtr<MediaQuerySet> mediaQueries = MediaQuerySet::create(media());
-
-        MediaQueryEvaluator screenEval("screen", true);
-        MediaQueryEvaluator printEval("print", true);
-        if (screenEval.eval(mediaQueries.get()) || printEval.eval(mediaQueries.get())) {
-            m_loading = true;
-            TextPosition startPosition = m_startPosition == TextPosition::belowRangePosition() ? TextPosition::minimumPosition() : m_startPosition;
-            m_sheet = document.styleEngine()->createSheet(e, text, startPosition, m_createdByParser);
-            m_sheet->setMediaQueries(mediaQueries.release());
-            m_loading = false;
-        }
-    }
-
-
-    document.styleResolverChanged();
-}
-
-}