accessibility/source/extended/listboxaccessible.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 <extended/listboxaccessible.hxx>
  21 #include <vcl/treelistbox.hxx>
  22 #include <vcl/svapp.hxx>
  23 #include <osl/diagnose.h>
  24
  25 namespace accessibility
  26 {
  27     // ListBoxAccessibleBase
  28     ListBoxAccessibleBase::ListBoxAccessibleBase( SvTreeListBox& _rWindow )
  29         :m_pWindow( &_rWindow )
  30     {
  31         m_pWindow->AddEventListener( LINK( this, ListBoxAccessibleBase, WindowEventListener ) );
  32     }
  33
  34     ListBoxAccessibleBase::~ListBoxAccessibleBase( )
  35     {
  36         if ( m_pWindow )
  37         {
  38             // cannot call "dispose" here, as it is abstract, so the VTABLE of the derived class
  39             // is not intact anymore
  40             // so we call our "disposing" only
  41             disposing();
  42         }
  43     }
  44
  45     IMPL_LINK( ListBoxAccessibleBase, WindowEventListener, VclWindowEvent&, rEvent, void )
  46     {
  47         OSL_ENSURE( rEvent.GetWindow() , "ListBoxAccessibleBase::WindowEventListener: no event window!" );
  48         OSL_ENSURE( rEvent.GetWindow() == m_pWindow, "ListBoxAccessibleBase::WindowEventListener: where did this come from?" );
  49
  50         if ( isAlive() )
  51         {
  52             switch ( rEvent.GetId() )
  53             {
  54                 case  VclEventId::ObjectDying :
  55                 {
  56                     if ( m_pWindow )
  57                         m_pWindow->RemoveEventListener( LINK( this, ListBoxAccessibleBase, WindowEventListener ) );
  58                     m_pWindow = nullptr;
  59                     dispose();
  60                     break;
  61                 }
  62                 default: break;
  63             }
  64         }
  65     }
  66
  67     void ListBoxAccessibleBase::disposing()
  68     {
  69         SolarMutexGuard g;
  70         if ( m_pWindow )
  71             m_pWindow->RemoveEventListener( LINK( this, ListBoxAccessibleBase, WindowEventListener ) );
  72         m_pWindow = nullptr;
  73     }
  74
  75 }   // namespace accessibility
  76
  77 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */