| /* |
| * (C) 1999-2003 Lars Knoll (knoll@kde.org) |
| * (C) 2002-2003 Dirk Mueller (mueller@kde.org) |
| * Copyright (C) 2002, 2006, 2007, 2012 Apple Inc. All rights reserved. |
| * Copyright (C) 2011 Andreas Kling (kling@webkit.org) |
| * |
| * 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. |
| */ |
| |
| #ifndef CSSRule_h |
| #define CSSRule_h |
| |
| #include "core/CoreExport.h" |
| #include "platform/bindings/ScriptWrappable.h" |
| #include "platform/heap/Handle.h" |
| #include "platform/wtf/text/WTFString.h" |
| |
| namespace blink { |
| |
| class CSSParserContext; |
| class CSSRuleList; |
| class CSSStyleSheet; |
| class StyleRuleBase; |
| enum class SecureContextMode; |
| |
| class CORE_EXPORT CSSRule : public ScriptWrappable { |
| DEFINE_WRAPPERTYPEINFO(); |
| |
| public: |
| virtual ~CSSRule() = default; |
| |
| enum Type { |
| kStyleRule = 1, |
| kCharsetRule = 2, |
| kImportRule = 3, |
| kMediaRule = 4, |
| kFontFaceRule = 5, |
| kPageRule = 6, |
| kKeyframesRule = 7, |
| kKeyframeRule = 8, |
| kNamespaceRule = 10, |
| kSupportsRule = 12, |
| kViewportRule = 15, |
| }; |
| |
| virtual Type type() const = 0; |
| virtual String cssText() const = 0; |
| virtual void Reattach(StyleRuleBase*) = 0; |
| |
| virtual CSSRuleList* cssRules() const { return nullptr; } |
| |
| void SetParentStyleSheet(CSSStyleSheet*); |
| |
| void SetParentRule(CSSRule*); |
| |
| virtual void Trace(blink::Visitor*); |
| virtual void TraceWrappers(const ScriptWrappableVisitor*) const; |
| |
| CSSStyleSheet* parentStyleSheet() const { |
| if (parent_is_rule_) |
| return parent_rule_ ? parent_rule_->parentStyleSheet() : nullptr; |
| return parent_style_sheet_; |
| } |
| |
| CSSRule* parentRule() const { |
| return parent_is_rule_ ? parent_rule_ : nullptr; |
| } |
| |
| // The CSSOM spec states that "setting the cssText attribute must do nothing." |
| void setCSSText(const String&) {} |
| |
| protected: |
| CSSRule(CSSStyleSheet* parent) |
| : has_cached_selector_text_(false), |
| parent_is_rule_(false), |
| parent_style_sheet_(parent) {} |
| |
| bool HasCachedSelectorText() const { return has_cached_selector_text_; } |
| void SetHasCachedSelectorText(bool has_cached_selector_text) const { |
| has_cached_selector_text_ = has_cached_selector_text; |
| } |
| |
| const CSSParserContext* ParserContext(SecureContextMode) const; |
| |
| private: |
| mutable unsigned char has_cached_selector_text_ : 1; |
| unsigned char parent_is_rule_ : 1; |
| |
| // These should be Members, but no Members in unions. |
| union { |
| CSSRule* parent_rule_; |
| CSSStyleSheet* parent_style_sheet_; |
| }; |
| }; |
| |
| #define DEFINE_CSS_RULE_TYPE_CASTS(ToType, TYPE_NAME) \ |
| DEFINE_TYPE_CASTS(ToType, CSSRule, rule, rule->type() == CSSRule::TYPE_NAME, \ |
| rule.type() == CSSRule::TYPE_NAME) |
| |
| } // namespace blink |
| |
| #endif // CSSRule_h |