text: /*
   * Copyright (C) 2012 Apple Inc. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
   * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
   * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #ifndef SKY_ENGINE_CORE_CSS_PROPERTYSETCSSSTYLEDECLARATION_H_
  #define SKY_ENGINE_CORE_CSS_PROPERTYSETCSSSTYLEDECLARATION_H_
  
  #include "sky/engine/core/css/CSSStyleDeclaration.h"
  #include "sky/engine/wtf/HashMap.h"
  #include "sky/engine/wtf/OwnPtr.h"
  
  namespace blink {
  
  class CSSProperty;
  class CSSValue;
  class Element;
  class ExceptionState;
  class MutableStylePropertySet;
  class StyleSheetContents;
  
  class AbstractPropertySetCSSStyleDeclaration : public CSSStyleDeclaration {
  public:
      virtual Element* parentElement() const { return 0; }
      StyleSheetContents* contextStyleSheet() const;
  
  private:
      virtual unsigned length() const override final;
      virtual String item(unsigned index) const override final;
      virtual PassRefPtr<CSSValue> getPropertyCSSValue(const String& propertyName) override final;
      virtual String getPropertyValue(const String& propertyName) override final;
      virtual String getPropertyShorthand(const String& propertyName) override final;
      virtual bool isPropertyImplicit(const String& propertyName) override final;
      virtual void setProperty(const String& propertyName, const String& value, ExceptionState&) override final;
      virtual String removeProperty(const String& propertyName, ExceptionState&) override final;
      virtual String cssText() const override final;
      virtual void setCSSText(const String&, ExceptionState&) override final;
      virtual PassRefPtr<CSSValue> getPropertyCSSValueInternal(CSSPropertyID) override final;
      virtual String getPropertyValueInternal(CSSPropertyID) override final;
      virtual void setPropertyInternal(CSSPropertyID, const String& value, ExceptionState&) override final;
  
      virtual bool cssPropertyMatches(CSSPropertyID, const CSSValue*) const override final;
      virtual PassRefPtr<MutableStylePropertySet> copyProperties() const override final;
  
      CSSValue* cloneAndCacheForCSSOM(CSSValue*);
  
  protected:
      enum MutationType { NoChanges, PropertyChanged };
      virtual void willMutate() { }
      virtual void didMutate(MutationType) { }
      virtual MutableStylePropertySet& propertySet() const = 0;
  
      OwnPtr<HashMap<RawPtr<CSSValue>, RefPtr<CSSValue> > > m_cssomCSSValueClones;
  };
  
  class PropertySetCSSStyleDeclaration : public AbstractPropertySetCSSStyleDeclaration {
  public:
      PropertySetCSSStyleDeclaration(MutableStylePropertySet& propertySet) : m_propertySet(&propertySet) { }
  
  #if !ENABLE(OILPAN)
      virtual void ref() override;
      virtual void deref() override;
  #endif
  
  protected:
      virtual MutableStylePropertySet& propertySet() const override final { ASSERT(m_propertySet); return *m_propertySet; }
  
      RawPtr<MutableStylePropertySet> m_propertySet; // Cannot be null
  };
  
  class InlineCSSStyleDeclaration final : public AbstractPropertySetCSSStyleDeclaration
  {
  public:
      explicit InlineCSSStyleDeclaration(Element* parentElement)
          : m_parentElement(parentElement)
      {
      }
  
  private:
      virtual MutableStylePropertySet& propertySet() const override;
  #if !ENABLE(OILPAN)
      virtual void ref() override;
      virtual void deref() override;
  #endif
      virtual CSSStyleSheet* parentStyleSheet() const override;
      virtual Element* parentElement() const override { return m_parentElement; }
  
      virtual void didMutate(MutationType) override;
  
      RawPtr<Element> m_parentElement;
  };
  
  } // namespace blink
  
  #endif  // SKY_ENGINE_CORE_CSS_PROPERTYSETCSSSTYLEDECLARATION_H_
  