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(com::sun::star::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 ::com::sun::star::accessibility::AccessibleEventObject& aEvent )
  47 throw (::com::sun::star::uno::RuntimeException)
  48 {
  49     SolarMutexGuard g;
  50
  51     switch (aEvent.EventId)
  52     {
  53     case AccessibleEventId::CHILD:
  54         HandleChildChangedEvent(aEvent.OldValue, aEvent.NewValue);
  55         break;
  56     case AccessibleEventId::VISIBLE_DATA_CHANGED:
  57         HandleVisibleDataChangedEvent();
  58         break;
  59     case AccessibleEventId::BOUNDRECT_CHANGED:
  60         HandleBoundrectChangedEvent();
  61         break;
  62     default:
  63         AccEventListener::notifyEvent(aEvent);
  64         break;
  65     }
  66 }
  67
  68 /**
  69  *  handle the CHILD event
  70  * @param   oldValue    the child to be deleted
  71  * @param   newValue    the child to be added
  72  */
  73 void AccDialogEventListener::HandleChildChangedEvent(Any oldValue, Any newValue)
  74 {
  75     Reference< XAccessible > xChild;
  76     if( newValue >>= xChild)
  77     {
  78         //create a new child
  79         if(xChild.is())
  80         {
  81             XAccessible* pAcc = xChild.get();
  82             //add this child
  83             pAgent->InsertAccObj(pAcc, m_xAccessible.get());
  84             //add all oldValue's existing children
  85             pAgent->InsertChildrenAccObj(pAcc);
  86             pAgent->NotifyAccEvent(UM_EVENT_CHILD_ADDED, pAcc);
  87         }
  88         else
  89         {}
  90     }
  91     else if (oldValue >>= xChild)
  92     {
  93         //delete a existing child
  94         if(xChild.is())
  95         {
  96             XAccessible* pAcc = xChild.get();
  97             pAgent->NotifyAccEvent(UM_EVENT_CHILD_REMOVED, pAcc);
  98             //delete all oldValue's existing children
  99             pAgent->DeleteChildrenAccObj( pAcc );
 100             //delete this child
 101             pAgent->DeleteAccObj( pAcc );
 102         }
 103         else
 104         {}
 105     }
 106
 107 }
 108
 109 /**
 110  *  set the new state and fire the MSAA event
 111  *  @param state    new state id
 112  *  @param enable   true if state is set, false if state is unset
 113  */
 114 void AccDialogEventListener::SetComponentState(short state, bool enable)
 115 {
 116     // only the following state can be fired state event.
 117     switch (state)
 118     {
 119     case AccessibleStateType::ICONIFIED:
 120         // no msaa state mapping
 121         break;
 122     case AccessibleStateType::VISIBLE:
 123         // UNO !VISIBLE == MSAA INVISIBLE
 124         if( enable )
 125             pAgent->IncreaseState(m_xAccessible.get(), AccessibleStateType::VISIBLE);
 126         else
 127             pAgent->DecreaseState(m_xAccessible.get(), AccessibleStateType::VISIBLE);
 128         break;
 129     case AccessibleStateType::ACTIVE:
 130         // Only frames should be active
 131         // no msaa state mapping
 132         break;
 133     default:
 134         break;
 135     }
 136 }
 137
 138 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */