DOMTreeWalker.hpp

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/*
 * 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: DOMTreeWalker.hpp 671894 2008-06-26 13:29:21Z borisk $
 */

#if !defined(XERCESC_INCLUDE_GUARD_DOMTREEWALKER_HPP)
#define XERCESC_INCLUDE_GUARD_DOMTREEWALKER_HPP

#include <xercesc/dom/DOMNode.hpp>
#include <xercesc/dom/DOMNodeFilter.hpp>

XERCES_CPP_NAMESPACE_BEGIN


class CDOM_EXPORT DOMTreeWalker {
protected:
    // -----------------------------------------------------------------------
    //  Hidden constructors
    // -----------------------------------------------------------------------
    DOMTreeWalker() {}
    DOMTreeWalker(const DOMTreeWalker &) {}

private:
    // -----------------------------------------------------------------------
    // Unimplemented constructors and operators
    // -----------------------------------------------------------------------
    DOMTreeWalker & operator = (const DOMTreeWalker &);

public:
    // -----------------------------------------------------------------------
    //  All constructors are hidden, just the destructor is available
    // -----------------------------------------------------------------------
    virtual ~DOMTreeWalker() {};

    // -----------------------------------------------------------------------
    //  Virtual DOMTreeWalker interface
    // -----------------------------------------------------------------------
    // -----------------------------------------------------------------------
    //  Getter methods
    // -----------------------------------------------------------------------

    virtual DOMNode*          getRoot() = 0;
    virtual DOMNodeFilter::ShowType getWhatToShow()= 0;

    virtual DOMNodeFilter*     getFilter()= 0;

    virtual bool              getExpandEntityReferences()= 0;

    virtual DOMNode*          getCurrentNode()= 0;

    // -----------------------------------------------------------------------
    //  Query methods
    // -----------------------------------------------------------------------
    virtual DOMNode*          parentNode()= 0;

    virtual DOMNode*          firstChild()= 0;

    virtual DOMNode*          lastChild()= 0;

    virtual DOMNode*          previousSibling()= 0;

    virtual DOMNode*          nextSibling()= 0;

    virtual DOMNode*          previousNode()= 0;

    virtual DOMNode*          nextNode()= 0;

    // -----------------------------------------------------------------------
    //  Setter methods
    // -----------------------------------------------------------------------
    virtual void              setCurrentNode(DOMNode* currentNode)= 0;

    // -----------------------------------------------------------------------
    //  Non-standard Extension
    // -----------------------------------------------------------------------
    virtual void              release() = 0;
};

#define GetDOMTreeWalkerMemoryManager GET_INDIRECT_MM(fCurrentNode)

XERCES_CPP_NAMESPACE_END

#endif