| /* |
| * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| * Copyright (C) 2000 Frederik Holljen (frederik.holljen@hig.no) |
| * Copyright (C) 2001 Peter Kelly (pmk@post.com) |
| * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com) |
| * Copyright (C) 2004, 2008 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 NodeIterator_h |
| #define NodeIterator_h |
| |
| #include "core/dom/NodeFilter.h" |
| #include "core/dom/NodeIteratorBase.h" |
| #include "platform/bindings/ScriptWrappable.h" |
| #include "platform/heap/Handle.h" |
| |
| namespace blink { |
| |
| class ExceptionState; |
| |
| class NodeIterator final : public ScriptWrappable, public NodeIteratorBase { |
| DEFINE_WRAPPERTYPEINFO(); |
| USING_GARBAGE_COLLECTED_MIXIN(NodeIterator); |
| |
| public: |
| static NodeIterator* Create(Node* root_node, |
| unsigned what_to_show, |
| V8NodeFilterCondition* filter) { |
| return new NodeIterator(root_node, what_to_show, filter); |
| } |
| |
| Node* nextNode(ExceptionState&); |
| Node* previousNode(ExceptionState&); |
| void detach(); |
| |
| Node* referenceNode() const { return reference_node_.node.Get(); } |
| bool pointerBeforeReferenceNode() const { |
| return reference_node_.is_pointer_before_node; |
| } |
| |
| // This function is called before any node is removed from the document tree. |
| void NodeWillBeRemoved(Node&); |
| |
| virtual void Trace(blink::Visitor*); |
| |
| virtual void TraceWrappers(const ScriptWrappableVisitor*) const; |
| |
| private: |
| NodeIterator(Node*, unsigned what_to_show, V8NodeFilterCondition*); |
| |
| class NodePointer { |
| DISALLOW_NEW(); |
| |
| public: |
| NodePointer(); |
| NodePointer(Node*, bool); |
| |
| void Clear(); |
| bool MoveToNext(Node* root); |
| bool MoveToPrevious(Node* root); |
| |
| Member<Node> node; |
| bool is_pointer_before_node; |
| |
| void Trace(blink::Visitor* visitor) { visitor->Trace(node); } |
| }; |
| |
| void UpdateForNodeRemoval(Node& node_to_be_removed, NodePointer&) const; |
| |
| NodePointer reference_node_; |
| NodePointer candidate_node_; |
| }; |
| |
| } // namespace blink |
| |
| #endif // NodeIterator_h |