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