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      1 /*
      2  * Copyright (C) 2007, 2008, 2012 Apple Inc. 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  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef CSSKeyframeRule_h
     27 #define CSSKeyframeRule_h
     28 
     29 #include "core/css/CSSRule.h"
     30 
     31 namespace WebCore {
     32 
     33 class CSSKeyframesRule;
     34 class CSSParserValueList;
     35 class CSSStyleDeclaration;
     36 class MutableStylePropertySet;
     37 class StylePropertySet;
     38 class StyleRuleCSSStyleDeclaration;
     39 
     40 class StyleKeyframe FINAL : public RefCountedWillBeGarbageCollectedFinalized<StyleKeyframe> {
     41     WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
     42 public:
     43     static PassRefPtrWillBeRawPtr<StyleKeyframe> create()
     44     {
     45         return adoptRefWillBeNoop(new StyleKeyframe());
     46     }
     47     ~StyleKeyframe();
     48 
     49     // Exposed to JavaScript.
     50     String keyText() const;
     51     void setKeyText(const String&);
     52 
     53     // Used by StyleResolver.
     54     const Vector<double>& keys() const;
     55     // Used by BisonCSSParser when constructing a new StyleKeyframe.
     56     void setKeys(PassOwnPtr<Vector<double> >);
     57 
     58     const StylePropertySet& properties() const { return *m_properties; }
     59     MutableStylePropertySet& mutableProperties();
     60     void setProperties(PassRefPtr<StylePropertySet>);
     61 
     62     String cssText() const;
     63 
     64     void trace(Visitor*) { }
     65 
     66     static PassOwnPtr<Vector<double> > createKeyList(CSSParserValueList*);
     67 
     68 private:
     69     StyleKeyframe();
     70 
     71     RefPtr<StylePropertySet> m_properties;
     72     // These are both calculated lazily. Either one can be set, which invalidates the other.
     73     mutable String m_keyText;
     74     mutable OwnPtr<Vector<double> > m_keys;
     75 };
     76 
     77 class CSSKeyframeRule FINAL : public CSSRule {
     78 public:
     79     virtual ~CSSKeyframeRule();
     80 
     81     virtual CSSRule::Type type() const OVERRIDE { return KEYFRAME_RULE; }
     82     virtual String cssText() const OVERRIDE { return m_keyframe->cssText(); }
     83     virtual void reattach(StyleRuleBase*) OVERRIDE;
     84 
     85     String keyText() const { return m_keyframe->keyText(); }
     86     void setKeyText(const String& s) { m_keyframe->setKeyText(s); }
     87 
     88     CSSStyleDeclaration* style() const;
     89 
     90     virtual void trace(Visitor*) OVERRIDE;
     91 
     92 private:
     93     CSSKeyframeRule(StyleKeyframe*, CSSKeyframesRule* parent);
     94 
     95     RefPtrWillBeMember<StyleKeyframe> m_keyframe;
     96     mutable RefPtrWillBeMember<StyleRuleCSSStyleDeclaration> m_propertiesCSSOMWrapper;
     97 
     98     friend class CSSKeyframesRule;
     99 };
    100 
    101 DEFINE_CSS_RULE_TYPE_CASTS(CSSKeyframeRule, KEYFRAME_RULE);
    102 
    103 } // namespace WebCore
    104 
    105 #endif // CSSKeyframeRule_h
    106