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/*
* Copyright (C) 2016 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 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 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.
*/
#pragma once
#include "CSSStyleDeclaration.h"
#include "CSSValue.h"
#include "ExceptionOr.h"
#include <wtf/Ref.h>
#include <wtf/RefCounted.h>
#include <wtf/TypeCasts.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class DeprecatedCSSOMValue : public RefCounted<DeprecatedCSSOMValue> {
public:
// Exactly match the IDL. No reason to add anything if it's not in the IDL.
enum Type {
CSS_INHERIT = 0,
CSS_PRIMITIVE_VALUE = 1,
CSS_VALUE_LIST = 2,
CSS_CUSTOM = 3
};
// Override RefCounted's deref() to ensure operator delete is called on
// the appropriate subclass type.
void deref()
{
if (derefBase())
destroy();
}
WEBCORE_EXPORT unsigned cssValueType() const;
WEBCORE_EXPORT String cssText() const;
ExceptionOr<void> setCssText(const String&) { return { }; } // Will never implement.
bool equals(const DeprecatedCSSOMValue& other) const;
bool operator==(const DeprecatedCSSOMValue& other) const { return equals(other); }
bool isComplexValue() const { return m_classType == DeprecatedComplexValueClass; }
bool isPrimitiveValue() const { return m_classType == DeprecatedPrimitiveValueClass; }
bool isValueList() const { return m_classType == DeprecatedValueListClass; }
CSSStyleDeclaration& owner() const { return m_owner; }
protected:
static const size_t ClassTypeBits = 2;
enum DeprecatedClassType {
DeprecatedComplexValueClass,
DeprecatedPrimitiveValueClass,
DeprecatedValueListClass
};
DeprecatedClassType classType() const { return static_cast<DeprecatedClassType>(m_classType); }
DeprecatedCSSOMValue(DeprecatedClassType classType, CSSStyleDeclaration& owner)
: m_classType(classType)
, m_owner(owner)
{
}
// NOTE: This class is non-virtual for memory and performance reasons.
// Don't go making it virtual again unless you know exactly what you're doing!
~DeprecatedCSSOMValue() { }
private:
WEBCORE_EXPORT void destroy();
protected:
unsigned m_valueListSeparator : CSSValue::ValueListSeparatorBits;
unsigned m_classType : ClassTypeBits; // ClassType
Ref<CSSStyleDeclaration> m_owner;
};
class DeprecatedCSSOMComplexValue : public DeprecatedCSSOMValue {
public:
static Ref<DeprecatedCSSOMComplexValue> create(const CSSValue& value, CSSStyleDeclaration& owner)
{
return adoptRef(*new DeprecatedCSSOMComplexValue(value, owner));
}
bool equals(const DeprecatedCSSOMComplexValue& other) const { return m_value->equals(other.m_value); }
String cssText() const { return m_value->cssText(); }
unsigned cssValueType() const { return m_value->cssValueType(); }
protected:
DeprecatedCSSOMComplexValue(const CSSValue& value, CSSStyleDeclaration& owner)
: DeprecatedCSSOMValue(DeprecatedComplexValueClass, owner)
, m_value(const_cast<CSSValue&>(value))
{
}
private:
Ref<CSSValue> m_value;
};
} // namespace WebCore
#define SPECIALIZE_TYPE_TRAITS_CSSOM_VALUE(ToValueTypeName, predicate) \
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::ToValueTypeName) \
static bool isType(const WebCore::DeprecatedCSSOMValue& value) { return value.predicate; } \
SPECIALIZE_TYPE_TRAITS_END()
SPECIALIZE_TYPE_TRAITS_CSSOM_VALUE(DeprecatedCSSOMComplexValue, isComplexValue())
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