121 lines
3.4 KiB
C++
121 lines
3.4 KiB
C++
/*
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* (C) 1999-2003 Lars Knoll (knoll@kde.org)
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* (C) 2002-2003 Dirk Mueller (mueller@kde.org)
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* Copyright (C) 2002-2020 Apple Inc. All rights reserved.
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* Copyright (C) 2011 Andreas Kling (kling@webkit.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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#pragma once
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#include "ExceptionOr.h"
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#include <wtf/TypeCasts.h>
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namespace WebCore {
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class CSSStyleSheet;
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class StyleRuleBase;
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struct CSSParserContext;
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class CSSRule : public RefCounted<CSSRule> {
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public:
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virtual ~CSSRule() = default;
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// WebIDL enum
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enum Type {
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UNKNOWN_RULE,
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STYLE_RULE,
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CHARSET_RULE,
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IMPORT_RULE,
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MEDIA_RULE,
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FONT_FACE_RULE,
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PAGE_RULE,
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KEYFRAMES_RULE,
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KEYFRAME_RULE,
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MARGIN_RULE,
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NAMESPACE_RULE,
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COUNTER_STYLE_RULE,
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SUPPORTS_RULE
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};
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enum DeprecatedType {
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WEBKIT_KEYFRAMES_RULE = KEYFRAMES_RULE,
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WEBKIT_KEYFRAME_RULE = KEYFRAME_RULE
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};
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virtual Type type() const = 0;
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virtual String cssText() const = 0;
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virtual void reattach(StyleRuleBase&) = 0;
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void setParentStyleSheet(CSSStyleSheet*);
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void setParentRule(CSSRule*);
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CSSStyleSheet* parentStyleSheet() const;
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CSSRule* parentRule() const { return m_parentIsRule ? m_parentRule : nullptr; }
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WEBCORE_EXPORT ExceptionOr<void> setCssText(const String&);
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protected:
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explicit CSSRule(CSSStyleSheet*);
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bool hasCachedSelectorText() const { return m_hasCachedSelectorText; }
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void setHasCachedSelectorText(bool hasCachedSelectorText) const { m_hasCachedSelectorText = hasCachedSelectorText; }
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const CSSParserContext& parserContext() const;
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private:
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mutable unsigned char m_hasCachedSelectorText : 1;
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unsigned char m_parentIsRule : 1;
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union {
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CSSRule* m_parentRule;
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CSSStyleSheet* m_parentStyleSheet;
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};
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};
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inline CSSRule::CSSRule(CSSStyleSheet* parent)
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: m_hasCachedSelectorText(false)
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, m_parentIsRule(false)
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, m_parentStyleSheet(parent)
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{
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}
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inline void CSSRule::setParentStyleSheet(CSSStyleSheet* styleSheet)
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{
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m_parentIsRule = false;
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m_parentStyleSheet = styleSheet;
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}
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inline void CSSRule::setParentRule(CSSRule* rule)
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{
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m_parentIsRule = true;
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m_parentRule = rule;
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}
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inline CSSStyleSheet* CSSRule::parentStyleSheet() const
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{
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if (m_parentIsRule)
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return m_parentRule ? m_parentRule->parentStyleSheet() : nullptr;
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return m_parentStyleSheet;
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}
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} // namespace WebCore
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#define SPECIALIZE_TYPE_TRAITS_CSS_RULE(ToValueTypeName, predicate) \
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SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::ToValueTypeName) \
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static bool isType(const WebCore::CSSRule& rule) { return rule.type() == WebCore::predicate; } \
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SPECIALIZE_TYPE_TRAITS_END()
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