1 /* 2 * Copyright (C) 2011, 2012 Apple 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 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef CSSValuePool_h 27 #define CSSValuePool_h 28 29 #include "CSSPropertyNames.h" 30 #include "CSSValueKeywords.h" 31 #include "core/css/CSSInheritedValue.h" 32 #include "core/css/CSSInitialValue.h" 33 #include "core/css/CSSPrimitiveValue.h" 34 #include "wtf/HashMap.h" 35 #include "wtf/RefPtr.h" 36 #include "wtf/text/AtomicStringHash.h" 37 38 namespace WebCore { 39 40 class CSSValueList; 41 42 class CSSValuePool { 43 WTF_MAKE_FAST_ALLOCATED; 44 public: 45 PassRefPtr<CSSValueList> createFontFaceValue(const AtomicString&); 46 PassRefPtr<CSSPrimitiveValue> createFontFamilyValue(const String&); createInheritedValue()47 PassRefPtr<CSSInheritedValue> createInheritedValue() { return m_inheritedValue; } createImplicitInitialValue()48 PassRefPtr<CSSInitialValue> createImplicitInitialValue() { return m_implicitInitialValue; } createExplicitInitialValue()49 PassRefPtr<CSSInitialValue> createExplicitInitialValue() { return m_explicitInitialValue; } 50 PassRefPtr<CSSPrimitiveValue> createIdentifierValue(CSSValueID identifier); 51 PassRefPtr<CSSPrimitiveValue> createIdentifierValue(CSSPropertyID identifier); 52 PassRefPtr<CSSPrimitiveValue> createColorValue(unsigned rgbValue); 53 PassRefPtr<CSSPrimitiveValue> createValue(double value, CSSPrimitiveValue::UnitTypes); createValue(const String & value,CSSPrimitiveValue::UnitTypes type)54 PassRefPtr<CSSPrimitiveValue> createValue(const String& value, CSSPrimitiveValue::UnitTypes type) { return CSSPrimitiveValue::create(value, type); } 55 PassRefPtr<CSSPrimitiveValue> createValue(const Length& value, const RenderStyle&); createValue(const Length & value,float zoom)56 PassRefPtr<CSSPrimitiveValue> createValue(const Length& value, float zoom) { return CSSPrimitiveValue::create(value, zoom); } createValue(T value)57 template<typename T> static PassRefPtr<CSSPrimitiveValue> createValue(T value) { return CSSPrimitiveValue::create(value); } 58 59 private: 60 CSSValuePool(); 61 62 RefPtr<CSSInheritedValue> m_inheritedValue; 63 RefPtr<CSSInitialValue> m_implicitInitialValue; 64 RefPtr<CSSInitialValue> m_explicitInitialValue; 65 66 RefPtr<CSSPrimitiveValue> m_identifierValueCache[numCSSValueKeywords]; 67 68 typedef HashMap<unsigned, RefPtr<CSSPrimitiveValue> > ColorValueCache; 69 ColorValueCache m_colorValueCache; 70 RefPtr<CSSPrimitiveValue> m_colorTransparent; 71 RefPtr<CSSPrimitiveValue> m_colorWhite; 72 RefPtr<CSSPrimitiveValue> m_colorBlack; 73 74 static const int maximumCacheableIntegerValue = 255; 75 76 RefPtr<CSSPrimitiveValue> m_pixelValueCache[maximumCacheableIntegerValue + 1]; 77 RefPtr<CSSPrimitiveValue> m_percentValueCache[maximumCacheableIntegerValue + 1]; 78 RefPtr<CSSPrimitiveValue> m_numberValueCache[maximumCacheableIntegerValue + 1]; 79 80 typedef HashMap<AtomicString, RefPtr<CSSValueList> > FontFaceValueCache; 81 FontFaceValueCache m_fontFaceValueCache; 82 83 typedef HashMap<String, RefPtr<CSSPrimitiveValue> > FontFamilyValueCache; 84 FontFamilyValueCache m_fontFamilyValueCache; 85 86 friend CSSValuePool& cssValuePool(); 87 }; 88 89 CSSValuePool& cssValuePool(); 90 91 } 92 93 #endif 94