vcl/osx/a11yfocuslistener.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
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   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 <osx/a11yfocustracker.hxx>
  21 #include <osx/a11yfactory.h>
  22
  23 #include "a11yfocuslistener.hxx"
  24
  25 using namespace ::com::sun::star::accessibility;
  26 using namespace ::com::sun::star::uno;
  27
  28 rtl::Reference< AquaA11yFocusListener > AquaA11yFocusListener::theListener;
  29
  30 rtl::Reference< AquaA11yFocusListener > const & AquaA11yFocusListener::get()
  31 {
  32     if ( ! theListener.is() )
  33         theListener = new AquaA11yFocusListener();
  34
  35     return theListener;
  36 }
  37
  38 AquaA11yFocusListener::AquaA11yFocusListener() : m_focusedObject(nil)
  39 {
  40 }
  41
  42 id AquaA11yFocusListener::getFocusedUIElement()
  43 {
  44     if ( nil == m_focusedObject ) {
  45         Reference< XAccessible > xAccessible( TheAquaA11yFocusTracker::get().getFocusedObject() );
  46         try {
  47             if( xAccessible.is() ) {
  48                 Reference< XAccessibleContext > xContext(xAccessible->getAccessibleContext());
  49                 if( xContext.is() )
  50                     m_focusedObject = [ AquaA11yFactory wrapperForAccessibleContext: xContext ];
  51             }
  52         } catch(const RuntimeException &)  {
  53             // intentionally do nothing ..
  54         }
  55     }
  56
  57     return m_focusedObject;
  58 }
  59
  60 void
  61 AquaA11yFocusListener::focusedObjectChanged(const Reference< XAccessible >& xAccessible)
  62 {
  63     if ( nil != m_focusedObject ) {
  64         [ m_focusedObject release ];
  65         m_focusedObject = nil;
  66     }
  67
  68     try {
  69         if( xAccessible.is() ) {
  70             Reference< XAccessibleContext > xContext(xAccessible->getAccessibleContext());
  71             if( xContext.is() )
  72             {
  73                 m_focusedObject = [ AquaA11yFactory wrapperForAccessibleContext: xContext ];
  74                 NSAccessibilityPostNotification(m_focusedObject, NSAccessibilityFocusedUIElementChangedNotification);
  75             }
  76         }
  77     } catch(const RuntimeException &) {
  78         // intentionally do nothing ..
  79     }
  80 }
  81
  82 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */