Remove CSSOM mutability in StyleRule.

sky/engine/core/css/StyleRule.h

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * (C) 2002-2003 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2002, 2006, 2008, 2012, 2013 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.
  */
 
 #ifndef SKY_ENGINE_CORE_CSS_STYLERULE_H_
 #define SKY_ENGINE_CORE_CSS_STYLERULE_H_
 
 #include "sky/engine/core/css/CSSSelectorList.h"
 #include "sky/engine/core/css/MediaList.h"
+#include "sky/engine/wtf/Noncopyable.h"
 #include "sky/engine/wtf/RefPtr.h"
 
 namespace blink {
 
-class CSSStyleSheet;
-class MutableStylePropertySet;
 class StylePropertySet;
 
 class StyleRuleBase : public RefCounted<StyleRuleBase> {
     WTF_MAKE_FAST_ALLOCATED;
 public:
     enum Type {
         Unknown, // Not used.
         Style,
         Media,
         FontFace = 4,
         Keyframes = 5,
         Keyframe, // Not used. These are internally non-rule StyleKeyframe objects.
         Supports = 12,
         Filter = 17
     };
 
     Type type() const { return static_cast<Type>(m_type); }
 
     bool isFontFaceRule() const { return type() == FontFace; }
     bool isKeyframesRule() const { return type() == Keyframes; }
     bool isMediaRule() const { return type() == Media; }
     bool isStyleRule() const { return type() == Style; }
     bool isSupportsRule() const { return type() == Supports; }
     bool isFilterRule() const { return type() == Filter; }
 
-    PassRefPtr<StyleRuleBase> copy() const;
-
     void deref()
     {
         if (derefBase())
             destroy();
     }
 
 protected:
     StyleRuleBase(Type type) : m_type(type) { }
-    StyleRuleBase(const StyleRuleBase& o) : m_type(o.m_type) { }
 
     ~StyleRuleBase() { }
 
 private:
     void destroy();
 
     unsigned m_type : 5;
 };
 
-class StyleRule : public StyleRuleBase {
+class StyleRule final : public StyleRuleBase {
     WTF_MAKE_FAST_ALLOCATED;
+    WTF_MAKE_NONCOPYABLE(StyleRule);
 public:
     static PassRefPtr<StyleRule> create() { return adoptRef(new StyleRule()); }
 
     ~StyleRule();
 
     const CSSSelectorList& selectorList() const { return m_selectorList; }
     const StylePropertySet& properties() const { return *m_properties; }
-    MutableStylePropertySet& mutableProperties();
 
     void parserAdoptSelectorVector(Vector<OwnPtr<CSSParserSelector> >& selectors) { m_selectorList.adoptSelectorVector(selectors); }
     void wrapperAdoptSelectorList(CSSSelectorList& selectors) { m_selectorList.adopt(selectors); }
     void setProperties(PassRefPtr<StylePropertySet>);
 
-    PassRefPtr<StyleRule> copy() const { return adoptRef(new StyleRule(*this)); }
-
     static unsigned averageSizeInBytes();
 
 private:
     StyleRule();
-    StyleRule(const StyleRule&);
 
     RefPtr<StylePropertySet> m_properties; // Cannot be null.
     CSSSelectorList m_selectorList;
 };
 
-class StyleRuleFontFace : public StyleRuleBase {
+class StyleRuleFontFace final : public StyleRuleBase {
+    WTF_MAKE_NONCOPYABLE(StyleRuleFontFace);
 public:
     static PassRefPtr<StyleRuleFontFace> create() { return adoptRef(new StyleRuleFontFace); }
 
     ~StyleRuleFontFace();
 
     const StylePropertySet& properties() const { return *m_properties; }
-    MutableStylePropertySet& mutableProperties();
 
     void setProperties(PassRefPtr<StylePropertySet>);
 
-    PassRefPtr<StyleRuleFontFace> copy() const { return adoptRef(new StyleRuleFontFace(*this)); }
-
 private:
     StyleRuleFontFace();
-    StyleRuleFontFace(const StyleRuleFontFace&);
 
     RefPtr<StylePropertySet> m_properties; // Cannot be null.
 };
 
 class StyleRuleGroup : public StyleRuleBase {
 public:
     const Vector<RefPtr<StyleRuleBase> >& childRules() const { return m_childRules; }
 
-    void wrapperInsertRule(unsigned, PassRefPtr<StyleRuleBase>);
-    void wrapperRemoveRule(unsigned);
-
 protected:
     StyleRuleGroup(Type, Vector<RefPtr<StyleRuleBase> >& adoptRule);
-    StyleRuleGroup(const StyleRuleGroup&);
 
 private:
     Vector<RefPtr<StyleRuleBase> > m_childRules;
 };
 
-class StyleRuleMedia : public StyleRuleGroup {
+class StyleRuleMedia final : public StyleRuleGroup {
+    WTF_MAKE_NONCOPYABLE(StyleRuleMedia);
 public:
     static PassRefPtr<StyleRuleMedia> create(PassRefPtr<MediaQuerySet> media, Vector<RefPtr<StyleRuleBase> >& adoptRules)
     {
         return adoptRef(new StyleRuleMedia(media, adoptRules));
     }
 
     MediaQuerySet* mediaQueries() const { return m_mediaQueries.get(); }
 
-    PassRefPtr<StyleRuleMedia> copy() const { return adoptRef(new StyleRuleMedia(*this)); }
-
 private:
     StyleRuleMedia(PassRefPtr<MediaQuerySet>, Vector<RefPtr<StyleRuleBase> >& adoptRules);
-    StyleRuleMedia(const StyleRuleMedia&);
 
     RefPtr<MediaQuerySet> m_mediaQueries;
 };
 
-class StyleRuleSupports : public StyleRuleGroup {
+class StyleRuleSupports final : public StyleRuleGroup {
+    WTF_MAKE_NONCOPYABLE(StyleRuleSupports);
 public:
     static PassRefPtr<StyleRuleSupports> create(const String& conditionText, bool conditionIsSupported, Vector<RefPtr<StyleRuleBase> >& adoptRules)
     {
         return adoptRef(new StyleRuleSupports(conditionText, conditionIsSupported, adoptRules));
     }
 
     String conditionText() const { return m_conditionText; }
     bool conditionIsSupported() const { return m_conditionIsSupported; }
-    PassRefPtr<StyleRuleSupports> copy() const { return adoptRef(new StyleRuleSupports(*this)); }
 
 private:
     StyleRuleSupports(const String& conditionText, bool conditionIsSupported, Vector<RefPtr<StyleRuleBase> >& adoptRules);
-    StyleRuleSupports(const StyleRuleSupports&);
 
     String m_conditionText;
     bool m_conditionIsSupported;
 };
 
-class StyleRuleFilter : public StyleRuleBase {
+class StyleRuleFilter final : public StyleRuleBase {
+    WTF_MAKE_NONCOPYABLE(StyleRuleFilter);
 public:
     static PassRefPtr<StyleRuleFilter> create(const String& filterName) { return adoptRef(new StyleRuleFilter(filterName)); }
 
     ~StyleRuleFilter();
 
     const String& filterName() const { return m_filterName; }
 
     const StylePropertySet& properties() const { return *m_properties; }
-    MutableStylePropertySet& mutableProperties();
 
     void setProperties(PassRefPtr<StylePropertySet>);
 
-    PassRefPtr<StyleRuleFilter> copy() const { return adoptRef(new StyleRuleFilter(*this)); }
-
 private:
     StyleRuleFilter(const String&);
-    StyleRuleFilter(const StyleRuleFilter&);
 
     String m_filterName;
     RefPtr<StylePropertySet> m_properties;
 };
 
 #define DEFINE_STYLE_RULE_TYPE_CASTS(Type) \
     DEFINE_TYPE_CASTS(StyleRule##Type, StyleRuleBase, rule, rule->is##Type##Rule(), rule.is##Type##Rule())
 
 DEFINE_TYPE_CASTS(StyleRule, StyleRuleBase, rule, rule->isStyleRule(), rule.isStyleRule());
 DEFINE_STYLE_RULE_TYPE_CASTS(FontFace);
 DEFINE_STYLE_RULE_TYPE_CASTS(Media);
 DEFINE_STYLE_RULE_TYPE_CASTS(Supports);
 DEFINE_STYLE_RULE_TYPE_CASTS(Filter);
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_CORE_CSS_STYLERULE_H_