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       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #ifndef _COMPHELPER_CONTAINER_HXX_
      21             : #define _COMPHELPER_CONTAINER_HXX_
      22             : 
      23             : #include <vector>
      24             : #include "com/sun/star/uno/Reference.hxx"
      25             : #include "comphelper/comphelperdllapi.h"
      26             : 
      27             : //.........................................................................
      28             : namespace comphelper
      29             : {
      30             : //.........................................................................
      31             : 
      32             : //========================================================================
      33             : //= IndexAccessIterator
      34             : //========================================================================
      35             : /** an iterator that iterates through all elements, starting from an XIndexAccess (pre-order)
      36             : */
      37             : class COMPHELPER_DLLPUBLIC IndexAccessIterator
      38             : {
      39             : protected:
      40             :     ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface>    m_xStartingPoint;
      41             : 
      42             :     ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface>    m_xCurrentObject;
      43             :         // The current object
      44             :     ::std::vector<sal_Int32>        m_arrChildIndizies;
      45             : 
      46             :         // I'm moving through a tree, but its elements have no GetNextSibling,
      47             :         // so I have to remember where each child is in relation to its parent.
      48             :         // That is the path from the root node to m_xCurrentObject
      49             : 
      50             :     ::rtl::OUString     m_ustrProperty;
      51             :         // The Name of the requested property
      52             : 
      53             : public:
      54             :     IndexAccessIterator(::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface> xStartingPoint);
      55             : 
      56             :     virtual ~IndexAccessIterator();
      57             : 
      58             :     ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface>    Next();
      59             : 
      60           0 :     virtual void Invalidate() { m_xCurrentObject = NULL; }
      61             : 
      62             : protected:
      63           0 :     virtual sal_Bool ShouldHandleElement(const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface>& /*rElement*/) { return sal_True; }
      64             : 
      65             :         // This can be used to exclude certain elements; elements for which
      66             :         // this function returns sal_True will be simply skipped.
      67             :         // If this element is returned from Next(), then one can get
      68             :         // here get a little more information on the element.
      69             :         // That's why this method is not const.
      70           0 :     virtual sal_Bool ShouldStepInto(const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface>& /*xContainer*/) const { return sal_True; }
      71             : };
      72             : 
      73             : //.........................................................................
      74             : }   // namespace comphelper
      75             : //.........................................................................
      76             : 
      77             : #endif // _COMPHELPER_CONTAINER_HXX_
      78             : 
      79             : 
      80             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */