1 /* 2 * Copyright (C) 2012, 2013 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 COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 * 25 */ 26 27 #ifndef ElementDataCache_h 28 #define ElementDataCache_h 29 30 #include "platform/heap/Handle.h" 31 #include "wtf/HashMap.h" 32 #include "wtf/PassOwnPtr.h" 33 #include "wtf/PassRefPtr.h" 34 #include "wtf/RefPtr.h" 35 #include "wtf/Vector.h" 36 #include "wtf/text/StringHash.h" 37 38 namespace blink { 39 40 class Attribute; 41 class ShareableElementData; 42 43 class ElementDataCache FINAL : public NoBaseWillBeGarbageCollected<ElementDataCache> { 44 DECLARE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(ElementDataCache) 45 public: 46 static PassOwnPtrWillBeRawPtr<ElementDataCache> create() { return adoptPtrWillBeNoop(new ElementDataCache); } 47 48 PassRefPtrWillBeRawPtr<ShareableElementData> cachedShareableElementDataWithAttributes(const Vector<Attribute>&); 49 50 void trace(Visitor*); 51 52 private: 53 ElementDataCache(); 54 55 typedef WillBeHeapHashMap<unsigned, RefPtrWillBeMember<ShareableElementData>, AlreadyHashed> ShareableElementDataCache; 56 ShareableElementDataCache m_shareableElementDataCache; 57 }; 58 59 } 60 61 #endif 62
