1/* 2 * (C) 1999-2003 Lars Knoll (knoll@kde.org) 3 * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc. 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Library General Public 7 * License as published by the Free Software Foundation; either 8 * version 2 of the License, or (at your option) any later version. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Library General Public License for more details. 14 * 15 * You should have received a copy of the GNU Library General Public License 16 * along with this library; see the file COPYING.LIB. If not, write to 17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 18 * Boston, MA 02110-1301, USA. 19 */ 20 21#ifndef Pair_h 22#define Pair_h 23 24#include "core/css/CSSPrimitiveValue.h" 25#include "wtf/PassRefPtr.h" 26#include "wtf/RefCounted.h" 27#include "wtf/text/StringBuilder.h" 28 29namespace WebCore { 30 31// A primitive value representing a pair. This is useful for properties like border-radius, background-size/position, 32// and border-spacing (all of which are space-separated sets of two values). At the moment we are only using it for 33// border-radius and background-size, but (FIXME) border-spacing and background-position could be converted over to use 34// it (eliminating some extra -webkit- internal properties). 35class Pair : public RefCounted<Pair> { 36public: 37 static PassRefPtr<Pair> create() 38 { 39 return adoptRef(new Pair); 40 } 41 static PassRefPtr<Pair> create(PassRefPtr<CSSPrimitiveValue> first, PassRefPtr<CSSPrimitiveValue> second) 42 { 43 return adoptRef(new Pair(first, second)); 44 } 45 virtual ~Pair() { } 46 47 CSSPrimitiveValue* first() const { return m_first.get(); } 48 CSSPrimitiveValue* second() const { return m_second.get(); } 49 50 void setFirst(PassRefPtr<CSSPrimitiveValue> first) { m_first = first; } 51 void setSecond(PassRefPtr<CSSPrimitiveValue> second) { m_second = second; } 52 53 String cssText() const 54 { 55 56 return generateCSSString(first()->cssText(), second()->cssText()); 57 } 58 59 bool equals(const Pair& other) const { return compareCSSValuePtr(m_first, other.m_first) && compareCSSValuePtr(m_second, other.m_second); } 60 61 String serializeResolvingVariables(const HashMap<AtomicString, String>& variables) const 62 { 63 return generateCSSString(first()->customSerializeResolvingVariables(variables), 64 second()->customSerializeResolvingVariables(variables)); 65 } 66 67 bool hasVariableReference() const { return first()->hasVariableReference() || second()->hasVariableReference(); } 68 69private: 70 Pair() : m_first(0), m_second(0) { } 71 Pair(PassRefPtr<CSSPrimitiveValue> first, PassRefPtr<CSSPrimitiveValue> second) 72 : m_first(first), m_second(second) { } 73 74 static String generateCSSString(const String& first, const String& second) 75 { 76 if (first == second) 77 return first; 78 return first + ' ' + second; 79 } 80 81 RefPtr<CSSPrimitiveValue> m_first; 82 RefPtr<CSSPrimitiveValue> m_second; 83}; 84 85} // namespace 86 87#endif 88