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/*
* (C) 1999-2003 Lars Knoll (knoll@kde.org)
* Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CSS_VALUE_PAIR_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CSS_VALUE_PAIR_H_
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/css/css_value.h"
#include "third_party/blink/renderer/platform/wtf/casting.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace blink {
class CORE_EXPORT CSSValuePair : public CSSValue {
public:
enum IdenticalValuesPolicy { kDropIdenticalValues, kKeepIdenticalValues };
CSSValuePair(const CSSValue* first,
const CSSValue* second,
IdenticalValuesPolicy identical_values_policy)
: CSSValue(kValuePairClass),
first_(first),
second_(second),
identical_values_policy_(identical_values_policy) {
DCHECK(first_);
DCHECK(second_);
}
const CSSValue& First() const { return *first_; }
const CSSValue& Second() const { return *second_; }
bool KeepIdenticalValues() const {
return identical_values_policy_ == kKeepIdenticalValues;
}
String CustomCSSText() const {
String first = first_->CssText();
String second = second_->CssText();
if (identical_values_policy_ == kDropIdenticalValues && first == second)
return first;
return first + ' ' + second;
}
bool Equals(const CSSValuePair& other) const {
DCHECK_EQ(identical_values_policy_, other.identical_values_policy_);
return DataEquivalent(first_, other.first_) &&
DataEquivalent(second_, other.second_);
}
void TraceAfterDispatch(blink::Visitor*) const;
protected:
CSSValuePair(ClassType class_type,
const CSSValue* first,
const CSSValue* second)
: CSSValue(class_type),
first_(first),
second_(second),
identical_values_policy_(kKeepIdenticalValues) {
DCHECK(first_);
DCHECK(second_);
}
private:
Member<const CSSValue> first_;
Member<const CSSValue> second_;
IdenticalValuesPolicy identical_values_policy_;
};
template <>
struct DowncastTraits<CSSValuePair> {
static bool AllowFrom(const CSSValue& value) { return value.IsValuePair(); }
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CSS_VALUE_PAIR_H_
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