winaccessibility/source/service/AccDialogEventListener.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 <com/sun/star/accessibility/XAccessible.hpp>
  21 #include <com/sun/star/accessibility/AccessibleStateType.hpp>
  22 #include <com/sun/star/accessibility/AccessibleEventId.hpp>
  23 #include <com/sun/star/accessibility/AccessibleRole.hpp>
  24 #include <com/sun/star/accessibility/XAccessibleEventBroadcaster.hpp>
  25
  26 #include <vcl/svapp.hxx>
  27
  28 #include <AccDialogEventListener.hxx>
  29 #include <AccObjectManagerAgent.hxx>
  30 #include <unomsaaevent.hxx>
  31
  32 using namespace com::sun::star::uno;
  33 using namespace com::sun::star::accessibility;
  34
  35 AccDialogEventListener::AccDialogEventListener(css::accessibility::XAccessible* pAcc, AccObjectManagerAgent* Agent)
  36         :AccEventListener(pAcc, Agent)
  37 {}
  38 AccDialogEventListener::~AccDialogEventListener()
  39 {
  40 }
  41
  42 /**
  43  *  Uno's event notifier when event is captured
  44  *  @param AccessibleEventObject    the event object which contains information about event
  45  */
  46 void  AccDialogEventListener::notifyEvent( const css::accessibility::AccessibleEventObject& aEvent )
  47 {
  48     SolarMutexGuard g;
  49
  50     switch (aEvent.EventId)
  51     {
  52     case AccessibleEventId::CHILD:
  53         HandleChildChangedEvent(aEvent.OldValue, aEvent.NewValue);
  54         break;
  55     case AccessibleEventId::VISIBLE_DATA_CHANGED:
  56         HandleVisibleDataChangedEvent();
  57         break;
  58     case AccessibleEventId::BOUNDRECT_CHANGED:
  59         HandleBoundrectChangedEvent();
  60         break;
  61     default:
  62         AccEventListener::notifyEvent(aEvent);
  63         break;
  64     }
  65 }
  66
  67 /**
  68  *  handle the CHILD event
  69  * @param   oldValue    the child to be deleted
  70  * @param   newValue    the child to be added
  71  */
  72 void AccDialogEventListener::HandleChildChangedEvent(Any oldValue, Any newValue)
  73 {
  74     Reference< XAccessible > xChild;
  75     if( newValue >>= xChild)
  76     {
  77         //create a new child
  78         if(xChild.is())
  79         {
  80             XAccessible* pAcc = xChild.get();
  81             //add this child
  82             pAgent->InsertAccObj(pAcc, m_xAccessible.get());
  83             //add all oldValue's existing children
  84             pAgent->InsertChildrenAccObj(pAcc);
  85             pAgent->NotifyAccEvent(UM_EVENT_CHILD_ADDED, pAcc);
  86         }
  87     }
  88     else if (oldValue >>= xChild)
  89     {
  90         //delete an existing child
  91         if(xChild.is())
  92         {
  93             XAccessible* pAcc = xChild.get();
  94             pAgent->NotifyAccEvent(UM_EVENT_CHILD_REMOVED, pAcc);
  95             //delete all oldValue's existing children
  96             pAgent->DeleteChildrenAccObj( pAcc );
  97             //delete this child
  98             pAgent->DeleteAccObj( pAcc );
  99         }
 100     }
 101
 102 }
 103
 104 /**
 105  *  set the new state and fire the MSAA event
 106  *  @param state    new state id
 107  *  @param enable   true if state is set, false if state is unset
 108  */
 109 void AccDialogEventListener::SetComponentState(short state, bool enable)
 110 {
 111     // only the following state can be fired state event.
 112     switch (state)
 113     {
 114     case AccessibleStateType::ICONIFIED:
 115         // no msaa state mapping
 116         break;
 117     case AccessibleStateType::VISIBLE:
 118         // UNO !VISIBLE == MSAA INVISIBLE
 119         if( enable )
 120             pAgent->IncreaseState(m_xAccessible.get(), AccessibleStateType::VISIBLE);
 121         else
 122             pAgent->DecreaseState(m_xAccessible.get(), AccessibleStateType::VISIBLE);
 123         break;
 124     case AccessibleStateType::ACTIVE:
 125         // Only frames should be active
 126         // no msaa state mapping
 127         break;
 128     default:
 129         break;
 130     }
 131 }
 132
 133 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */