accessibility/source/extended/accessibletabbarbase.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/accessibletabbarbase.hxx>
  21 #ifndef ACCESSIBILITY_EXT_ACCESSIBLETABBARPAGELIST
  22 #include <extended/accessibletabbarpagelist.hxx>
  23 #endif
  24 #include <svtools/tabbar.hxx>
  25 #include <vcl/vclevent.hxx>
  26
  27
  28 namespace accessibility
  29 {
  30
  31
  32 AccessibleTabBarBase::AccessibleTabBarBase( TabBar* pTabBar ) :
  33     m_pTabBar( nullptr )
  34 {
  35     SetTabBarPointer( pTabBar );
  36 }
  37
  38 AccessibleTabBarBase::~AccessibleTabBarBase()
  39 {
  40     ClearTabBarPointer();
  41 }
  42
  43 IMPL_LINK( AccessibleTabBarBase, WindowEventListener, VclWindowEvent&, rEvent, void )
  44 {
  45     vcl::Window* pEventWindow = rEvent.GetWindow();
  46     OSL_ENSURE( pEventWindow, "AccessibleTabBarBase::WindowEventListener: no window!" );
  47
  48     if( ( rEvent.GetId() == VclEventId::TabbarPageRemoved ) &&
  49         ( static_cast<sal_uInt16>(reinterpret_cast<sal_IntPtr>(rEvent.GetData())) == TabBar::PAGE_NOT_FOUND ) &&
  50         (dynamic_cast<AccessibleTabBarPageList *>(this) == nullptr))
  51     {
  52         return;
  53     }
  54
  55     if ( !pEventWindow->IsAccessibilityEventsSuppressed() || (rEvent.GetId() == VclEventId::ObjectDying) )
  56         ProcessWindowEvent( rEvent );
  57 }
  58
  59 void AccessibleTabBarBase::ProcessWindowEvent( const VclWindowEvent& rVclWindowEvent )
  60 {
  61     if( rVclWindowEvent.GetId() == VclEventId::ObjectDying )
  62         ClearTabBarPointer();
  63 }
  64
  65 // XComponent
  66
  67 void AccessibleTabBarBase::disposing()
  68 {
  69     OAccessibleExtendedComponentHelper::disposing();
  70     ClearTabBarPointer();
  71 }
  72
  73 // private
  74
  75 void AccessibleTabBarBase::SetTabBarPointer( TabBar* pTabBar )
  76 {
  77     OSL_ENSURE( !m_pTabBar, "AccessibleTabBarBase::SetTabBarPointer - multiple call" );
  78     m_pTabBar = pTabBar;
  79     if( m_pTabBar )
  80         m_pTabBar->AddEventListener( LINK( this, AccessibleTabBarBase, WindowEventListener ) );
  81 }
  82
  83 void AccessibleTabBarBase::ClearTabBarPointer()
  84 {
  85     if( m_pTabBar )
  86     {
  87         m_pTabBar->RemoveEventListener( LINK( this, AccessibleTabBarBase, WindowEventListener ) );
  88         m_pTabBar = nullptr;
  89     }
  90 }
  91
  92
  93 }   // namespace accessibility
  94
  95
  96 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */