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 "CSSInheritedValue.h" 30#include "CSSInitialValue.h" 31#include "CSSPrimitiveValue.h" 32#include "CSSValueKeywords.h" 33#include <wtf/text/AtomicStringHash.h> 34#include <wtf/HashMap.h> 35#include <wtf/RefPtr.h> 36 37namespace WebCore { 38 39class CSSValueList; 40 41class CSSValuePool { 42 WTF_MAKE_FAST_ALLOCATED; 43public: 44 PassRefPtr<CSSValueList> createFontFaceValue(const AtomicString&); 45 PassRefPtr<CSSPrimitiveValue> createFontFamilyValue(const String&); 46 PassRefPtr<CSSInheritedValue> createInheritedValue() { return m_inheritedValue; } 47 PassRefPtr<CSSInitialValue> createImplicitInitialValue() { return m_implicitInitialValue; } 48 PassRefPtr<CSSInitialValue> createExplicitInitialValue() { return m_explicitInitialValue; } 49 PassRefPtr<CSSPrimitiveValue> createIdentifierValue(int identifier); 50 PassRefPtr<CSSPrimitiveValue> createColorValue(unsigned rgbValue); 51 PassRefPtr<CSSPrimitiveValue> createValue(double value, CSSPrimitiveValue::UnitTypes); 52 PassRefPtr<CSSPrimitiveValue> createValue(const String& value, CSSPrimitiveValue::UnitTypes type) { return CSSPrimitiveValue::create(value, type); } 53 template<typename T> static PassRefPtr<CSSPrimitiveValue> createValue(T value) { return CSSPrimitiveValue::create(value); } 54 55 void drain(); 56 57private: 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 87CSSValuePool& cssValuePool(); 88 89} 90 91#endif 92