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      1 /*
      2  * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  * 1. Redistributions of source code must retain the above
      9  *    copyright notice, this list of conditions and the following
     10  *    disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above
     12  *    copyright notice, this list of conditions and the following
     13  *    disclaimer in the documentation and/or other materials
     14  *    provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER "AS IS" AND ANY
     17  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
     20  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
     21  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     22  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     23  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
     25  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
     26  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     27  * SUCH DAMAGE.
     28  */
     29 
     30 #ifndef CSSFilterRule_h
     31 #define CSSFilterRule_h
     32 
     33 #include "core/css/CSSRule.h"
     34 #include "platform/heap/Handle.h"
     35 
     36 namespace WebCore {
     37 
     38 class CSSStyleDeclaration;
     39 class StyleRuleFilter;
     40 class StyleRuleCSSStyleDeclaration;
     41 
     42 class CSSFilterRule FINAL : public CSSRule {
     43 public:
     44     static PassRefPtrWillBeRawPtr<CSSFilterRule> create(StyleRuleFilter* rule, CSSStyleSheet* sheet)
     45     {
     46         return adoptRefWillBeNoop(new CSSFilterRule(rule, sheet));
     47     }
     48 
     49     virtual ~CSSFilterRule();
     50 
     51     virtual CSSRule::Type type() const OVERRIDE { return WEBKIT_FILTER_RULE; }
     52     virtual String cssText() const OVERRIDE;
     53     virtual void reattach(StyleRuleBase*) OVERRIDE;
     54 
     55     CSSStyleDeclaration* style() const;
     56 
     57     virtual void trace(Visitor*) OVERRIDE;
     58 
     59 private:
     60     CSSFilterRule(StyleRuleFilter*, CSSStyleSheet* parent);
     61 
     62     RefPtrWillBeMember<StyleRuleFilter> m_filterRule;
     63     mutable RefPtrWillBeMember<StyleRuleCSSStyleDeclaration> m_propertiesCSSOMWrapper;
     64 };
     65 
     66 DEFINE_CSS_RULE_TYPE_CASTS(CSSFilterRule, WEBKIT_FILTER_RULE);
     67 
     68 }
     69 
     70 
     71 #endif // CSSFilterRule_h
     72