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e71cf28f76
There's no reason to keep two identical lists of the sheets and have this separate object. I also moved the updating logic out of StyleResolver and into ScopedStyleResolver which makes more sense. There's still some weirdness since some global state still exists in the StyleResolver, but that's something we can fix in future patches. R=ojan@chromium.org Review URL: https://codereview.chromium.org/852703002
147 lines
4.1 KiB
C++
147 lines
4.1 KiB
C++
/*
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* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
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* (C) 1999 Antti Koivisto (koivisto@kde.org)
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* (C) 2001 Dirk Mueller (mueller@kde.org)
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* Copyright (C) 2003, 2010 Apple Inc. All rights reserved.
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* (C) 2007 Rob Buis (buis@kde.org)
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "sky/engine/config.h"
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#include "sky/engine/core/html/HTMLStyleElement.h"
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#include "gen/sky/core/HTMLNames.h"
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#include "sky/engine/core/css/MediaList.h"
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#include "sky/engine/core/css/MediaQueryEvaluator.h"
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#include "sky/engine/core/dom/Document.h"
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#include "sky/engine/core/dom/Element.h"
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#include "sky/engine/core/dom/StyleEngine.h"
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#include "sky/engine/core/dom/shadow/ShadowRoot.h"
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#include "sky/engine/core/frame/LocalFrame.h"
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#include "sky/engine/platform/TraceEvent.h"
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namespace blink {
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inline HTMLStyleElement::HTMLStyleElement(Document& document)
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: HTMLElement(HTMLNames::styleTag, document)
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{
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}
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HTMLStyleElement::~HTMLStyleElement()
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{
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if (m_sheet)
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m_sheet->clearOwnerNode();
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if (m_sheet)
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clearSheet();
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}
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PassRefPtr<HTMLStyleElement> HTMLStyleElement::create(Document& document)
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{
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return adoptRef(new HTMLStyleElement(document));
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}
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void HTMLStyleElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
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{
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if (name == HTMLNames::mediaAttr && inDocument() && document().isActive() && m_sheet) {
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m_sheet->setMediaQueries(MediaQuerySet::create(value));
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document().styleResolverChanged();
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} else {
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HTMLElement::parseAttribute(name, value);
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}
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}
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void HTMLStyleElement::insertedInto(ContainerNode* insertionPoint)
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{
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HTMLElement::insertedInto(insertionPoint);
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if (!inActiveDocument())
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return;
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treeScope().scopedStyleResolver().addStyleSheetCandidateNode(*this);
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process();
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}
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void HTMLStyleElement::removedFrom(ContainerNode* insertionPoint)
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{
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HTMLElement::removedFrom(insertionPoint);
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if (!insertionPoint->inActiveDocument())
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return;
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TreeScope* containingScope = containingShadowRoot();
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TreeScope& scope = containingScope ? *containingScope : insertionPoint->treeScope();
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scope.scopedStyleResolver().removeStyleSheetCandidateNode(*this);
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RefPtr<CSSStyleSheet> removedSheet = m_sheet.get();
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if (m_sheet)
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clearSheet();
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if (removedSheet)
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document().styleResolverChanged();
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}
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void HTMLStyleElement::childrenChanged(const ChildrenChange& change)
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{
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HTMLElement::childrenChanged(change);
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process();
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}
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const AtomicString& HTMLStyleElement::media() const
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{
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return getAttribute(HTMLNames::mediaAttr);
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}
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ContainerNode* HTMLStyleElement::scopingNode()
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{
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if (!inActiveDocument())
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return 0;
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if (isInShadowTree())
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return containingShadowRoot();
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return &document();
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}
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void HTMLStyleElement::clearSheet()
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{
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ASSERT(m_sheet);
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m_sheet.release()->clearOwnerNode();
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}
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void HTMLStyleElement::process()
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{
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if (!inActiveDocument())
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return;
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TRACE_EVENT0("blink", "StyleElement::process");
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if (m_sheet)
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clearSheet();
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RefPtr<MediaQuerySet> mediaQueries = MediaQuerySet::create(media());
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MediaQueryEvaluator screenEval("screen", true);
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if (screenEval.eval(mediaQueries.get())) {
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const String& text = textFromChildren();
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m_sheet = document().styleEngine()->createSheet(this, text);
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m_sheet->setMediaQueries(mediaQueries.release());
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}
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document().styleResolverChanged();
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}
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}
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