1/* 2 * Copyright (C) 2014 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31#ifndef SVGEnumeration_h 32#define SVGEnumeration_h 33 34#include "core/svg/properties/SVGProperty.h" 35 36namespace blink { 37 38class ExceptionState; 39 40class SVGEnumerationBase : public SVGPropertyBase { 41public: 42 typedef std::pair<unsigned short, String> StringEntry; 43 typedef Vector<StringEntry> StringEntries; 44 45 // SVGEnumeration does not have a tear-off type. 46 typedef void TearOffType; 47 typedef unsigned short PrimitiveType; 48 49 virtual ~SVGEnumerationBase(); 50 51 unsigned short value() const { return m_value <= maxExposedEnumValue() ? m_value : 0; } 52 void setValue(unsigned short, ExceptionState&); 53 54 // SVGPropertyBase: 55 virtual PassRefPtr<SVGEnumerationBase> clone() const = 0; 56 virtual PassRefPtr<SVGPropertyBase> cloneForAnimation(const String&) const OVERRIDE; 57 58 virtual String valueAsString() const OVERRIDE; 59 void setValueAsString(const String&, ExceptionState&); 60 61 virtual void add(PassRefPtrWillBeRawPtr<SVGPropertyBase>, SVGElement*) OVERRIDE; 62 virtual void calculateAnimatedValue(SVGAnimationElement*, float percentage, unsigned repeatCount, PassRefPtr<SVGPropertyBase> from, PassRefPtr<SVGPropertyBase> to, PassRefPtr<SVGPropertyBase> toAtEndOfDurationValue, SVGElement*) OVERRIDE; 63 virtual float calculateDistance(PassRefPtr<SVGPropertyBase> to, SVGElement*) OVERRIDE; 64 65 static AnimatedPropertyType classType() { return AnimatedEnumeration; } 66 67 // Ensure that |SVGAnimatedEnumerationBase::setBaseVal| is used instead of |SVGAnimatedProperty<SVGEnumerationBase>::setBaseVal|. 68 void setValue(unsigned short) { ASSERT_NOT_REACHED(); } 69 70 static unsigned short valueOfLastEnum(const StringEntries& entries) { return entries.last().first; } 71 72protected: 73 SVGEnumerationBase(unsigned short value, const StringEntries& entries, unsigned short maxExposed) 74 : SVGPropertyBase(classType()) 75 , m_value(value) 76 , m_maxExposed(maxExposed) 77 , m_entries(entries) 78 { 79 } 80 81 // This is the maximum value of all the internal enumeration values. 82 // This assumes that |m_entries| are sorted. 83 unsigned short maxInternalEnumValue() const { return valueOfLastEnum(m_entries); } 84 85 // This is the maximum value that is exposed as an IDL constant on the relevant interface. 86 unsigned short maxExposedEnumValue() const { return m_maxExposed; } 87 88 // Used by SVGMarkerOrientEnumeration. 89 virtual void notifyChange() { } 90 91 unsigned short m_value; 92 const unsigned short m_maxExposed; 93 const StringEntries& m_entries; 94}; 95typedef SVGEnumerationBase::StringEntries SVGEnumerationStringEntries; 96 97template<typename Enum> const SVGEnumerationStringEntries& getStaticStringEntries(); 98template<typename Enum> unsigned short getMaxExposedEnumValue() 99{ 100 return SVGEnumerationBase::valueOfLastEnum(getStaticStringEntries<Enum>()); 101} 102 103template<typename Enum> 104class SVGEnumeration : public SVGEnumerationBase { 105public: 106 static PassRefPtr<SVGEnumeration<Enum> > create(Enum newValue) 107 { 108 return adoptRef(new SVGEnumeration<Enum>(newValue)); 109 } 110 111 virtual ~SVGEnumeration() 112 { 113 } 114 115 virtual PassRefPtr<SVGEnumerationBase> clone() const OVERRIDE 116 { 117 return create(enumValue()); 118 } 119 120 Enum enumValue() const 121 { 122 ASSERT(m_value <= maxInternalEnumValue()); 123 return static_cast<Enum>(m_value); 124 } 125 126 void setEnumValue(Enum value) 127 { 128 m_value = value; 129 notifyChange(); 130 } 131 132protected: 133 explicit SVGEnumeration(Enum newValue) 134 : SVGEnumerationBase(newValue, getStaticStringEntries<Enum>(), getMaxExposedEnumValue<Enum>()) 135 { 136 } 137}; 138 139} // namespace blink 140 141#endif // SVGEnumeration_h 142