| /* |
| * 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/CoreExport.h" |
| #include "core/dom/LiveNodeListBase.h" |
| #include "core/dom/NodeList.h" |
| #include "core/html/CollectionItemsCache.h" |
| #include "core/html/CollectionType.h" |
| #include "platform/heap/Handle.h" |
| |
| namespace blink { |
| |
| class Element; |
| |
| class CORE_EXPORT LiveNodeList : public NodeList, public LiveNodeListBase { |
| USING_GARBAGE_COLLECTED_MIXIN(LiveNodeList); |
| |
| public: |
| LiveNodeList(ContainerNode& owner_node, |
| CollectionType collection_type, |
| NodeListInvalidationType invalidation_type, |
| NodeListRootType root_type = NodeListRootType::kNode) |
| : LiveNodeListBase(owner_node, |
| root_type, |
| invalidation_type, |
| collection_type) { |
| // Keep this in the child class because |registerNodeList| requires wrapper |
| // tracing and potentially calls virtual methods which is not allowed in a |
| // base class constructor. |
| GetDocument().RegisterNodeList(this); |
| } |
| |
| unsigned length() const final; |
| Element* item(unsigned offset) const final; |
| virtual bool ElementMatches(const Element&) const = 0; |
| |
| void InvalidateCache(Document* old_document = 0) const final; |
| void InvalidateCacheForAttribute(const QualifiedName*) const; |
| |
| // Collection IndexCache API. |
| bool CanTraverseBackward() const { return true; } |
| Element* TraverseToFirst() const; |
| Element* TraverseToLast() const; |
| Element* TraverseForwardToOffset(unsigned offset, |
| Element& current_node, |
| unsigned& current_offset) const; |
| Element* TraverseBackwardToOffset(unsigned offset, |
| Element& current_node, |
| unsigned& current_offset) const; |
| |
| DECLARE_VIRTUAL_TRACE(); |
| |
| private: |
| Node* VirtualOwnerNode() const final; |
| |
| mutable CollectionItemsCache<LiveNodeList, Element> collection_items_cache_; |
| }; |
| |
| DEFINE_TYPE_CASTS(LiveNodeList, |
| LiveNodeListBase, |
| list, |
| IsLiveNodeListType(list->GetType()), |
| IsLiveNodeListType(list.GetType())); |
| |
| inline void LiveNodeList::InvalidateCacheForAttribute( |
| const QualifiedName* attr_name) const { |
| if (!attr_name || |
| ShouldInvalidateTypeOnAttributeChange(InvalidationType(), *attr_name)) |
| InvalidateCache(); |
| } |
| |
| } // namespace blink |
| |
| #endif // LiveNodeList_h |