unoxml/source/dom/childlist.cxx

   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 #include "childlist.hxx"
  21
  22 #include <libxml/tree.h>
  23
  24 #include <node.hxx>
  25 #include <utility>
  26 #include "document.hxx"
  27
  28 using namespace css::uno;
  29 using namespace css::xml::dom;
  30
  31 namespace DOM
  32 {
  33     CChildList::CChildList(::rtl::Reference<CNode> pBase,
  34                 ::osl::Mutex & rMutex)
  35         : m_pNode(std::move(pBase))
  36         , m_rMutex(rMutex)
  37     {
  38     }
  39
  40     /**
  41     The number of nodes in the list.
  42     */
  43     sal_Int32 SAL_CALL CChildList::getLength()
  44     {
  45         ::osl::MutexGuard const g(m_rMutex);
  46
  47         sal_Int32 length = 0;
  48         if (m_pNode != nullptr)
  49         {
  50             xmlNodePtr cur = m_pNode->GetNodePtr();
  51             if (nullptr != cur) {
  52                 cur = cur->children;
  53             }
  54             while (cur != nullptr)
  55             {
  56                 length++;
  57                 cur = cur->next;
  58             }
  59         }
  60         return length;
  61
  62     }
  63     /**
  64     Returns the indexth item in the collection.
  65     */
  66     Reference< XNode > SAL_CALL CChildList::item(sal_Int32 index)
  67     {
  68         ::osl::MutexGuard const g(m_rMutex);
  69
  70         if (m_pNode != nullptr)
  71         {
  72             xmlNodePtr cur = m_pNode->GetNodePtr();
  73             if (nullptr != cur) {
  74                 cur = cur->children;
  75             }
  76             while (cur != nullptr)
  77             {
  78                 if (index-- == 0) {
  79                     return m_pNode->GetOwnerDocument().GetCNode(cur);
  80                 }
  81                 cur = cur->next;
  82             }
  83         }
  84         return nullptr;
  85     }
  86 }
  87
  88 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */