projects / iphone-api.git / blame
| Commit | Line | Data |
|---|---|---|
| a90939db JF |
1 | /* |
| 2 | * Copyright (C) 1999 Lars Knoll (knoll@kde.org) | |
| 3 | * (C) 1999 Antti Koivisto (koivisto@kde.org) | |
| 4 | * (C) 2001 Dirk Mueller (mueller@kde.org) | |
| 5 | * Copyright (C) 2004, 2006, 2007 Apple Inc. All rights reserved. | |
| 6 | * | |
| 7 | * This library is free software; you can redistribute it and/or | |
| 8 | * modify it under the terms of the GNU Library General Public | |
| 9 | * License as published by the Free Software Foundation; either | |
| 10 | * version 2 of the License, or (at your option) any later version. | |
| 11 | * | |
| 12 | * This library is distributed in the hope that it will be useful, | |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 | * Library General Public License for more details. | |
| 16 | * | |
| 17 | * You should have received a copy of the GNU Library General Public License | |
| 18 | * along with this library; see the file COPYING.LIB. If not, write to | |
| 19 | * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
| 20 | * Boston, MA 02110-1301, USA. | |
| 21 | * | |
| 22 | */ | |
| 23 | ||
| 24 | #ifndef DynamicNodeList_h | |
| 25 | #define DynamicNodeList_h | |
| 26 | ||
| 27 | #include "NodeList.h" | |
| 28 | #include <wtf/RefCounted.h> | |
| 29 | #include <wtf/Forward.h> | |
| 30 | #include <wtf/RefPtr.h> | |
| 31 | ||
| 32 | namespace WebCore { | |
| 33 | ||
| 34 | class AtomicString; | |
| 35 | class Element; | |
| 36 | class Node; | |
| 37 | ||
| 38 | class DynamicNodeList : public NodeList { | |
| 39 | public: | |
| 40 | struct Caches { | |
| 41 | Caches(); | |
| 42 | void reset(); | |
| 43 | ||
| 44 | unsigned cachedLength; | |
| 45 | Node* lastItem; | |
| 46 | unsigned lastItemOffset; | |
| 47 | bool isLengthCacheValid : 1; | |
| 48 | bool isItemCacheValid : 1; | |
| 49 | unsigned refCount; | |
| 50 | }; | |
| 51 | ||
| 52 | virtual ~DynamicNodeList(); | |
| 53 | ||
| 54 | bool hasOwnCaches() const { return m_ownsCaches; } | |
| 55 | ||
| 56 | // DOM methods & attributes for NodeList | |
| 57 | virtual unsigned length() const; | |
| 58 | virtual Node* item(unsigned index) const; | |
| 59 | virtual Node* itemWithName(const AtomicString&) const; | |
| 60 | ||
| 61 | // Other methods (not part of DOM) | |
| 62 | void invalidateCache(); | |
| 63 | ||
| 64 | protected: | |
| 65 | DynamicNodeList(PassRefPtr<Node> rootNode); | |
| 66 | DynamicNodeList(PassRefPtr<Node> rootNode, Caches*); | |
| 67 | ||
| 68 | virtual bool nodeMatches(Element*) const = 0; | |
| 69 | ||
| 70 | RefPtr<Node> m_rootNode; | |
| 71 | mutable Caches* m_caches; | |
| 72 | bool m_ownsCaches; | |
| 73 | ||
| 74 | private: | |
| 75 | Node* itemForwardsFromCurrent(Node* start, unsigned offset, int remainingOffset) const; | |
| 76 | Node* itemBackwardsFromCurrent(Node* start, unsigned offset, int remainingOffset) const; | |
| 77 | }; | |
| 78 | ||
| 79 | } // namespace WebCore | |
| 80 | ||
| 81 | #endif // DynamicNodeList_h |