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 29 namespace 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). 35 class Pair FINAL : public RefCounted<Pair> { 36 public: 37 enum IdenticalValuesPolicy { DropIdenticalValues, KeepIdenticalValues }; 38 create()39 static PassRefPtr<Pair> create() 40 { 41 return adoptRef(new Pair); 42 } create(PassRefPtr<CSSPrimitiveValue> first,PassRefPtr<CSSPrimitiveValue> second,IdenticalValuesPolicy identicalValuesPolicy)43 static PassRefPtr<Pair> create(PassRefPtr<CSSPrimitiveValue> first, PassRefPtr<CSSPrimitiveValue> second, IdenticalValuesPolicy identicalValuesPolicy) 44 { 45 return adoptRef(new Pair(first, second, identicalValuesPolicy)); 46 } 47 first()48 CSSPrimitiveValue* first() const { return m_first.get(); } second()49 CSSPrimitiveValue* second() const { return m_second.get(); } identicalValuesPolicy()50 IdenticalValuesPolicy identicalValuesPolicy() const { return m_identicalValuesPolicy; } 51 setFirst(PassRefPtr<CSSPrimitiveValue> first)52 void setFirst(PassRefPtr<CSSPrimitiveValue> first) { m_first = first; } setSecond(PassRefPtr<CSSPrimitiveValue> second)53 void setSecond(PassRefPtr<CSSPrimitiveValue> second) { m_second = second; } setIdenticalValuesPolicy(IdenticalValuesPolicy identicalValuesPolicy)54 void setIdenticalValuesPolicy(IdenticalValuesPolicy identicalValuesPolicy) { m_identicalValuesPolicy = identicalValuesPolicy; } 55 cssText()56 String cssText() const 57 { 58 return generateCSSString(first()->cssText(), second()->cssText(), m_identicalValuesPolicy); 59 } 60 equals(const Pair & other)61 bool equals(const Pair& other) const 62 { 63 return compareCSSValuePtr(m_first, other.m_first) 64 && compareCSSValuePtr(m_second, other.m_second) 65 && m_identicalValuesPolicy == other.m_identicalValuesPolicy; 66 } 67 serializeResolvingVariables(const HashMap<AtomicString,String> & variables)68 String serializeResolvingVariables(const HashMap<AtomicString, String>& variables) const 69 { 70 return generateCSSString( 71 first()->customSerializeResolvingVariables(variables), 72 second()->customSerializeResolvingVariables(variables), 73 m_identicalValuesPolicy); 74 } 75 hasVariableReference()76 bool hasVariableReference() const { return first()->hasVariableReference() || second()->hasVariableReference(); } 77 78 private: Pair()79 Pair() 80 : m_first(0) 81 , m_second(0) 82 , m_identicalValuesPolicy(DropIdenticalValues) { } 83 Pair(PassRefPtr<CSSPrimitiveValue> first,PassRefPtr<CSSPrimitiveValue> second,IdenticalValuesPolicy identicalValuesPolicy)84 Pair(PassRefPtr<CSSPrimitiveValue> first, PassRefPtr<CSSPrimitiveValue> second, IdenticalValuesPolicy identicalValuesPolicy) 85 : m_first(first) 86 , m_second(second) 87 , m_identicalValuesPolicy(identicalValuesPolicy) { } 88 generateCSSString(const String & first,const String & second,IdenticalValuesPolicy identicalValuesPolicy)89 static String generateCSSString(const String& first, const String& second, IdenticalValuesPolicy identicalValuesPolicy) 90 { 91 if (identicalValuesPolicy == DropIdenticalValues && first == second) 92 return first; 93 return first + ' ' + second; 94 } 95 96 RefPtr<CSSPrimitiveValue> m_first; 97 RefPtr<CSSPrimitiveValue> m_second; 98 IdenticalValuesPolicy m_identicalValuesPolicy; 99 }; 100 101 } // namespace 102 103 #endif 104