| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* |
| * $Id$ |
| */ |
| |
| // This class only adds the ability to have siblings |
| |
| #include <xercesc/util/XercesDefs.hpp> |
| #include "DOMNodeImpl.hpp" |
| #include "DOMChildNode.hpp" |
| #include "DOMCasts.hpp" |
| |
| namespace XERCES_CPP_NAMESPACE { |
| |
| |
| DOMChildNode::DOMChildNode() |
| { |
| this->previousSibling = 0; |
| this->nextSibling = 0; |
| } |
| |
| // This only makes a shallow copy, cloneChildren must also be called for a |
| // deep clone |
| DOMChildNode::DOMChildNode(const DOMChildNode &) |
| { |
| // Need to break the association w/ original siblings and parent |
| this->previousSibling = 0; |
| this->nextSibling = 0; |
| } |
| |
| DOMChildNode::~DOMChildNode() { |
| } |
| |
| |
| DOMNode * DOMChildNode::getNextSibling() const { |
| return nextSibling; |
| } |
| |
| // |
| // Note: for getParentNode and getPreviousSibling(), below, an |
| // extra paramter "thisNode" is required. This is because there |
| // is no way to cast from a DOMChildNode pointer back to the |
| // DOMNodeImpl that it is part of. Our "this" may or may not |
| // be preceded by a fParent in the object layout, and there's no |
| // practical way to tell, so we just take an extra parameter instead. |
| |
| DOMNode * DOMChildNode::getParentNode(const DOMNode *thisNode) const |
| { |
| // if we have an owner, ownerNode is our parent, otherwise it's |
| // our ownerDocument and we don't have a parent |
| const DOMNodeImpl *thisNodeImpl = castToNodeImpl(thisNode); |
| return thisNodeImpl->isOwned() ? thisNodeImpl->fOwnerNode : 0; |
| } |
| |
| DOMNode * DOMChildNode::getPreviousSibling(const DOMNode *thisNode) const { |
| // if we are the firstChild, previousSibling actually refers to our |
| // parent's lastChild, but we hide that |
| return castToNodeImpl(thisNode)->isFirstChild() ? 0 : previousSibling; |
| } |
| |
| } |
| |