| /* |
| * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| * (C) 1999 Antti Koivisto (koivisto@kde.org) |
| * (C) 2001 Dirk Mueller (mueller@kde.org) |
| * Copyright (C) 2004, 2006, 2007 Apple Inc. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| * |
| */ |
| |
| #ifndef LiveNodeList_h |
| #define LiveNodeList_h |
| |
| #include "core/dom/LiveNodeListBase.h" |
| #include "core/dom/NodeList.h" |
| #include "core/html/CollectionIndexCache.h" |
| #include "core/html/CollectionType.h" |
| #include "platform/heap/Handle.h" |
| #include "wtf/PassRefPtr.h" |
| |
| namespace WebCore { |
| |
| class Element; |
| |
| class LiveNodeList : public NodeList, public LiveNodeListBase { |
| WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(LiveNodeList); |
| public: |
| LiveNodeList(ContainerNode& ownerNode, CollectionType collectionType, NodeListInvalidationType invalidationType, NodeListRootType rootType = NodeListIsRootedAtNode) |
| : LiveNodeListBase(ownerNode, rootType, invalidationType, collectionType) { } |
| |
| virtual unsigned length() const OVERRIDE FINAL { return m_collectionIndexCache.nodeCount(*this); } |
| virtual Element* item(unsigned offset) const OVERRIDE FINAL { return m_collectionIndexCache.nodeAt(*this, offset); } |
| virtual bool elementMatches(const Element&) const = 0; |
| |
| virtual void invalidateCache(Document* oldDocument = 0) const OVERRIDE FINAL; |
| void invalidateCacheForAttribute(const QualifiedName*) const; |
| |
| bool shouldOnlyIncludeDirectChildren() const { return false; } |
| |
| // Collection IndexCache API. |
| bool canTraverseBackward() const { return true; } |
| Element* traverseToFirstElement() const; |
| Element* traverseToLastElement() const; |
| Element* traverseForwardToOffset(unsigned offset, Element& currentNode, unsigned& currentOffset) const; |
| Element* traverseBackwardToOffset(unsigned offset, Element& currentNode, unsigned& currentOffset) const; |
| |
| virtual void trace(Visitor*) OVERRIDE; |
| |
| private: |
| virtual Node* virtualOwnerNode() const OVERRIDE FINAL; |
| |
| mutable CollectionIndexCache<LiveNodeList, Element> m_collectionIndexCache; |
| }; |
| |
| DEFINE_TYPE_CASTS(LiveNodeList, LiveNodeListBase, list, isLiveNodeListType(list->type()), isLiveNodeListType(list.type())); |
| |
| inline void LiveNodeList::invalidateCacheForAttribute(const QualifiedName* attrName) const |
| { |
| if (!attrName || shouldInvalidateTypeOnAttributeChange(invalidationType(), *attrName)) |
| invalidateCache(); |
| } |
| |
| } // namespace WebCore |
| |
| #endif // LiveNodeList_h |