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f44ab040a3
In sky we only support inline styles and <style media>, not @media rules. This removes the Bison support for parsing them which was also removed in Blink in favor of the other media query parser which was added for use on the pre-scanner thread. R=eseidel@chromium.org Review URL: https://codereview.chromium.org/807703003
114 lines
3.5 KiB
C++
114 lines
3.5 KiB
C++
/*
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* (C) 1999-2003 Lars Knoll (knoll@kde.org)
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* Copyright (C) 2004, 2006, 2007, 2012 Apple Inc. All rights reserved.
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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/css/StyleSheetContents.h"
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#include "sky/engine/core/css/CSSStyleSheet.h"
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#include "sky/engine/core/css/MediaList.h"
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#include "sky/engine/core/css/StylePropertySet.h"
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#include "sky/engine/core/css/StyleRule.h"
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#include "sky/engine/core/css/parser/BisonCSSParser.h"
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#include "sky/engine/core/dom/Document.h"
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#include "sky/engine/core/dom/Node.h"
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#include "sky/engine/core/dom/StyleEngine.h"
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#include "sky/engine/core/frame/UseCounter.h"
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#include "sky/engine/platform/TraceEvent.h"
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#include "sky/engine/wtf/Deque.h"
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namespace blink {
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StyleSheetContents::StyleSheetContents(const CSSParserContext& context)
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: m_parserContext(context)
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{
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}
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StyleSheetContents::~StyleSheetContents()
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{
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// TODO(esprehn): Why is this here? The rules will be cleared immediately
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// after this destructor runs anyway.
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m_childRules.clear();
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}
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void StyleSheetContents::parserAppendRule(PassRefPtr<StyleRuleBase> rule)
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{
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m_childRules.append(rule);
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}
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bool StyleSheetContents::parseString(const String& sheetText)
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{
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CSSParserContext context(parserContext(), UseCounter::getFrom(this));
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BisonCSSParser p(context);
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p.parseSheet(this, sheetText);
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return true;
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}
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void StyleSheetContents::registerClient(CSSStyleSheet* sheet)
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{
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ASSERT(!m_clients.contains(sheet));
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// InspectorCSSAgent::buildObjectForRule creates CSSStyleSheet without any owner node.
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if (!sheet->ownerDocument())
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return;
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m_clients.add(sheet);
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}
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void StyleSheetContents::unregisterClient(CSSStyleSheet* sheet)
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{
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m_clients.remove(sheet);
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if (!sheet->ownerDocument() || !m_clients.isEmpty())
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return;
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sheet->ownerDocument()->styleEngine()->removeSheet(this);
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}
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void StyleSheetContents::shrinkToFit()
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{
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m_childRules.shrinkToFit();
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}
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RuleSet& StyleSheetContents::ensureRuleSet(AddRuleFlags addRuleFlags)
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{
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if (!m_ruleSet) {
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m_ruleSet = RuleSet::create();
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m_ruleSet->addRulesFromSheet(this, addRuleFlags);
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}
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return *m_ruleSet.get();
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}
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void StyleSheetContents::clearRuleSet()
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{
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// Don't want to clear the StyleResolver if the RuleSet hasn't been created
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// since we only clear the StyleResolver so that it's members are properly
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// updated in ScopedStyleResolver::addRulesFromSheet.
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if (!m_ruleSet)
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return;
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// Clearing the ruleSet means we need to recreate the styleResolver data structures.
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// See the StyleResolver calls in ScopedStyleResolver::addRulesFromSheet.
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for (RawPtr<CSSStyleSheet> client : m_clients) {
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if (Document* document = client->ownerDocument())
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document->styleEngine()->clearResolver();
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}
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m_ruleSet.clear();
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}
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}
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