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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CSSIdentifierValue_h
#define CSSIdentifierValue_h
#include "core/CSSValueKeywords.h"
#include "core/css/CSSValue.h"
#include "core/css/CSSValueIDMappings.h"
#include "platform/wtf/TypeTraits.h"
namespace blink {
// CSSIdentifierValue stores CSS value keywords, e.g. 'none', 'auto',
// 'lower-roman'.
// TODO(sashab): Rename this class to CSSKeywordValue once it no longer
// conflicts with CSSOM's CSSKeywordValue class.
class CORE_EXPORT CSSIdentifierValue : public CSSValue {
public:
static CSSIdentifierValue* Create(CSSValueID);
// TODO(sashab): Rename this to createFromPlatformValue().
template <typename T>
static CSSIdentifierValue* Create(T value) {
static_assert(!std::is_same<T, CSSValueID>::value,
"Do not call create() with a CSSValueID; call "
"createIdentifier() instead");
return new CSSIdentifierValue(value);
}
static CSSIdentifierValue* Create(const Length& value) {
return new CSSIdentifierValue(value);
}
CSSValueID GetValueID() const { return value_id_; }
String CustomCSSText() const;
bool Equals(const CSSIdentifierValue& other) const {
return value_id_ == other.value_id_;
}
template <typename T>
inline T ConvertTo()
const { // Overridden for special cases in CSSPrimitiveValueMappings.h
return CssValueIDToPlatformEnum<T>(value_id_);
}
void TraceAfterDispatch(blink::Visitor*);
private:
explicit CSSIdentifierValue(CSSValueID);
// TODO(sashab): Remove this function, and update mapping methods to
// specialize the create() method instead.
template <typename T>
CSSIdentifierValue(
T t) // Overriden for special cases in CSSPrimitiveValueMappings.h
: CSSValue(kIdentifierClass), value_id_(PlatformEnumToCSSValueID(t)) {}
CSSIdentifierValue(const Length&);
CSSValueID value_id_;
};
DEFINE_CSS_VALUE_TYPE_CASTS(CSSIdentifierValue, IsIdentifierValue());
} // namespace blink
#endif // CSSIdentifierValue_h