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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 Pair_h
#define Pair_h
#include "core/css/CSSPrimitiveValue.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefCounted.h"
#include "wtf/text/StringBuilder.h"
namespace WebCore {
// A primitive value representing a pair. This is useful for properties like border-radius, background-size/position,
// and border-spacing (all of which are space-separated sets of two values). At the moment we are only using it for
// border-radius and background-size, but (FIXME) border-spacing and background-position could be converted over to use
// it (eliminating some extra -webkit- internal properties).
class Pair FINAL : public RefCounted<Pair> {
public:
enum IdenticalValuesPolicy { DropIdenticalValues, KeepIdenticalValues };
static PassRefPtr<Pair> create()
{
return adoptRef(new Pair);
}
static PassRefPtr<Pair> create(PassRefPtr<CSSPrimitiveValue> first, PassRefPtr<CSSPrimitiveValue> second, IdenticalValuesPolicy identicalValuesPolicy)
{
return adoptRef(new Pair(first, second, identicalValuesPolicy));
}
CSSPrimitiveValue* first() const { return m_first.get(); }
CSSPrimitiveValue* second() const { return m_second.get(); }
IdenticalValuesPolicy identicalValuesPolicy() const { return m_identicalValuesPolicy; }
void setFirst(PassRefPtr<CSSPrimitiveValue> first) { m_first = first; }
void setSecond(PassRefPtr<CSSPrimitiveValue> second) { m_second = second; }
void setIdenticalValuesPolicy(IdenticalValuesPolicy identicalValuesPolicy) { m_identicalValuesPolicy = identicalValuesPolicy; }
String cssText() const
{
return generateCSSString(first()->cssText(), second()->cssText(), m_identicalValuesPolicy);
}
bool equals(const Pair& other) const
{
return compareCSSValuePtr(m_first, other.m_first)
&& compareCSSValuePtr(m_second, other.m_second)
&& m_identicalValuesPolicy == other.m_identicalValuesPolicy;
}
String serializeResolvingVariables(const HashMap<AtomicString, String>& variables) const
{
return generateCSSString(
first()->customSerializeResolvingVariables(variables),
second()->customSerializeResolvingVariables(variables),
m_identicalValuesPolicy);
}
bool hasVariableReference() const { return first()->hasVariableReference() || second()->hasVariableReference(); }
private:
Pair()
: m_first(0)
, m_second(0)
, m_identicalValuesPolicy(DropIdenticalValues) { }
Pair(PassRefPtr<CSSPrimitiveValue> first, PassRefPtr<CSSPrimitiveValue> second, IdenticalValuesPolicy identicalValuesPolicy)
: m_first(first)
, m_second(second)
, m_identicalValuesPolicy(identicalValuesPolicy) { }
static String generateCSSString(const String& first, const String& second, IdenticalValuesPolicy identicalValuesPolicy)
{
if (identicalValuesPolicy == DropIdenticalValues && first == second)
return first;
return first + ' ' + second;
}
RefPtr<CSSPrimitiveValue> m_first;
RefPtr<CSSPrimitiveValue> m_second;
IdenticalValuesPolicy m_identicalValuesPolicy;
};
} // namespace
#endif
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