130 lines
4.4 KiB
C++
130 lines
4.4 KiB
C++
/*
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* Copyright (C) 2016 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "CSSStyleDeclaration.h"
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#include "CSSValue.h"
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#include "ExceptionOr.h"
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#include <wtf/Ref.h>
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#include <wtf/RefCounted.h>
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#include <wtf/TypeCasts.h>
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#include <wtf/WeakPtr.h>
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#include <wtf/text/WTFString.h>
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namespace WebCore {
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class DeprecatedCSSOMValue : public RefCounted<DeprecatedCSSOMValue>, public CanMakeWeakPtr<DeprecatedCSSOMValue> {
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public:
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// Exactly match the IDL. No reason to add anything if it's not in the IDL.
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enum Type {
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CSS_INHERIT = 0,
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CSS_PRIMITIVE_VALUE = 1,
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CSS_VALUE_LIST = 2,
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CSS_CUSTOM = 3
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};
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// Override RefCounted's deref() to ensure operator delete is called on
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// the appropriate subclass type.
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void deref()
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{
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if (derefBase())
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destroy();
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}
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WEBCORE_EXPORT unsigned cssValueType() const;
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WEBCORE_EXPORT String cssText() const;
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ExceptionOr<void> setCssText(const String&) { return { }; } // Will never implement.
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bool isComplexValue() const { return m_classType == DeprecatedComplexValueClass; }
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bool isPrimitiveValue() const { return m_classType == DeprecatedPrimitiveValueClass; }
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bool isValueList() const { return m_classType == DeprecatedValueListClass; }
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CSSStyleDeclaration& owner() const { return m_owner; }
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protected:
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static const size_t ClassTypeBits = 2;
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enum DeprecatedClassType {
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DeprecatedComplexValueClass,
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DeprecatedPrimitiveValueClass,
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DeprecatedValueListClass
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};
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DeprecatedClassType classType() const { return static_cast<DeprecatedClassType>(m_classType); }
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DeprecatedCSSOMValue(DeprecatedClassType classType, CSSStyleDeclaration& owner)
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: m_classType(classType)
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, m_owner(owner)
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{
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}
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// NOTE: This class is non-virtual for memory and performance reasons.
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// Don't go making it virtual again unless you know exactly what you're doing!
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~DeprecatedCSSOMValue() = default;
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private:
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WEBCORE_EXPORT void destroy();
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protected:
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unsigned m_valueSeparator : CSSValue::ValueSeparatorBits;
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unsigned m_classType : ClassTypeBits; // ClassType
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Ref<CSSStyleDeclaration> m_owner;
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};
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class DeprecatedCSSOMComplexValue : public DeprecatedCSSOMValue {
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public:
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static Ref<DeprecatedCSSOMComplexValue> create(const CSSValue& value, CSSStyleDeclaration& owner)
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{
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return adoptRef(*new DeprecatedCSSOMComplexValue(value, owner));
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}
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String cssText() const { return m_value->cssText(); }
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unsigned cssValueType() const { return m_value->cssValueType(); }
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protected:
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DeprecatedCSSOMComplexValue(const CSSValue& value, CSSStyleDeclaration& owner)
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: DeprecatedCSSOMValue(DeprecatedComplexValueClass, owner)
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, m_value(const_cast<CSSValue&>(value))
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{
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}
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private:
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Ref<CSSValue> m_value;
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};
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} // namespace WebCore
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#define SPECIALIZE_TYPE_TRAITS_CSSOM_VALUE(ToValueTypeName, predicate) \
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SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::ToValueTypeName) \
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static bool isType(const WebCore::DeprecatedCSSOMValue& value) { return value.predicate; } \
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SPECIALIZE_TYPE_TRAITS_END()
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SPECIALIZE_TYPE_TRAITS_CSSOM_VALUE(DeprecatedCSSOMComplexValue, isComplexValue())
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