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 <accessibility/extended/listboxaccessible.hxx>
  21 #include <svtools/treelistbox.hxx>
  22 #include <vcl/svapp.hxx>
  23
  24 namespace accessibility
  25 {
  26     // ListBoxAccessibleBase
  27     ListBoxAccessibleBase::ListBoxAccessibleBase( SvTreeListBox& _rWindow )
  28         :m_pWindow( &_rWindow )
  29     {
  30         m_pWindow->AddEventListener( LINK( this, ListBoxAccessibleBase, WindowEventListener ) );
  31     }
  32
  33     ListBoxAccessibleBase::~ListBoxAccessibleBase( )
  34     {
  35         if ( m_pWindow )
  36         {
  37             // cannot call "dispose" here, as it is abstract, so the VTABLE of the derived class
  38             // is not intact anymore
  39             // so we call our "disposing" only
  40             disposing();
  41         }
  42     }
  43
  44     IMPL_LINK( ListBoxAccessibleBase, WindowEventListener, VclSimpleEvent*, pEvent )
  45     {
  46         OSL_ENSURE( pEvent && pEvent->ISA( VclWindowEvent ), "ListBoxAccessibleBase::WindowEventListener: unexpected WindowEvent!" );
  47         if ( pEvent && pEvent->ISA( VclWindowEvent ) )
  48         {
  49             OSL_ENSURE( static_cast< VclWindowEvent* >( pEvent )->GetWindow() , "ListBoxAccessibleBase::WindowEventListener: no event window!" );
  50             OSL_ENSURE( static_cast< VclWindowEvent* >( pEvent )->GetWindow() == m_pWindow, "ListBoxAccessibleBase::WindowEventListener: where did this come from?" );
  51
  52             ProcessWindowEvent( *static_cast< VclWindowEvent* >( pEvent ) );
  53         }
  54         return 0;
  55     }
  56
  57     void ListBoxAccessibleBase::disposing()
  58     {
  59         SolarMutexGuard g;
  60         if ( m_pWindow )
  61             m_pWindow->RemoveEventListener( LINK( this, ListBoxAccessibleBase, WindowEventListener ) );
  62         m_pWindow = NULL;
  63     }
  64
  65     void ListBoxAccessibleBase::ProcessWindowEvent( const VclWindowEvent& _rVclWindowEvent )
  66     {
  67         if ( isAlive() )
  68         {
  69             switch ( _rVclWindowEvent.GetId() )
  70             {
  71                 case  VCLEVENT_OBJECT_DYING :
  72                 {
  73                     if ( m_pWindow )
  74                         m_pWindow->RemoveEventListener( LINK( this, ListBoxAccessibleBase, WindowEventListener ) );
  75                     m_pWindow = NULL;
  76                     dispose();
  77                     break;
  78                 }
  79             }
  80         }
  81     }
  82 }   // namespace accessibility
  83
  84 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */