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&); 47 PassRefPtr<CSSInheritedValue> createInheritedValue() { return m_inheritedValue; } 48 PassRefPtr<CSSInitialValue> createImplicitInitialValue() { return m_implicitInitialValue; } 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); 54 PassRefPtr<CSSPrimitiveValue> createValue(const String& value, CSSPrimitiveValue::UnitTypes type) { return CSSPrimitiveValue::create(value, type); } 55 template<typename T> static PassRefPtr<CSSPrimitiveValue> createValue(T value) { return CSSPrimitiveValue::create(value); } 56 57 private: 58 CSSValuePool(); 59 60 RefPtr<CSSInheritedValue> m_inheritedValue; 61 RefPtr<CSSInitialValue> m_implicitInitialValue; 62 RefPtr<CSSInitialValue> m_explicitInitialValue; 63 64 RefPtr<CSSPrimitiveValue> m_identifierValueCache[numCSSValueKeywords]; 65 66 typedef HashMap<unsigned, RefPtr<CSSPrimitiveValue> > ColorValueCache; 67 ColorValueCache m_colorValueCache; 68 RefPtr<CSSPrimitiveValue> m_colorTransparent; 69 RefPtr<CSSPrimitiveValue> m_colorWhite; 70 RefPtr<CSSPrimitiveValue> m_colorBlack; 71 72 static const int maximumCacheableIntegerValue = 255; 73 74 RefPtr<CSSPrimitiveValue> m_pixelValueCache[maximumCacheableIntegerValue + 1]; 75 RefPtr<CSSPrimitiveValue> m_percentValueCache[maximumCacheableIntegerValue + 1]; 76 RefPtr<CSSPrimitiveValue> m_numberValueCache[maximumCacheableIntegerValue + 1]; 77 78 typedef HashMap<AtomicString, RefPtr<CSSValueList> > FontFaceValueCache; 79 FontFaceValueCache m_fontFaceValueCache; 80 81 typedef HashMap<String, RefPtr<CSSPrimitiveValue> > FontFamilyValueCache; 82 FontFamilyValueCache m_fontFamilyValueCache; 83 84 friend CSSValuePool& cssValuePool(); 85 }; 86 87 CSSValuePool& cssValuePool(); 88 89 } 90 91 #endif 92