winaccessibility/source/service/AccMenuEventListener.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 <AccMenuEventListener.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 AccMenuEventListener::AccMenuEventListener(css::accessibility::XAccessible* pAcc, AccObjectManagerAgent* Agent)
  36         :AccComponentEventListener(pAcc, Agent)
  37 {}
  38 AccMenuEventListener::~AccMenuEventListener()
  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  AccMenuEventListener::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::SELECTION_CHANGED:
  56         //don't need to process anything,just same as word behavior
  57         //handleSelectionChangedEvent();
  58         break;
  59     default:
  60         AccComponentEventListener::notifyEvent(aEvent);
  61         break;
  62     }
  63 }
  64
  65 /**
  66  *  handle the CHILD event
  67  *  @param  oldValue    the child to be deleted
  68  *  @param  newValue    the child to be added
  69  */
  70 void AccMenuEventListener::HandleChildChangedEvent(Any oldValue, Any newValue)
  71 {
  72
  73     Reference< XAccessible > xChild;
  74     if( newValue >>= xChild)
  75     {
  76         //create a new child
  77         if(xChild.is())
  78         {
  79             XAccessible* pAcc = xChild.get();
  80             //add this child
  81             pAgent->InsertAccObj(pAcc, m_xAccessible.get());
  82             //add all oldValue's existing children
  83             pAgent->InsertChildrenAccObj(pAcc);
  84             pAgent->NotifyAccEvent(UM_EVENT_CHILD_ADDED, pAcc);
  85         }
  86     }
  87     else if (oldValue >>= xChild)
  88     {
  89         //delete an existing child
  90         if(xChild.is())
  91         {
  92             XAccessible* pAcc = xChild.get();
  93             pAgent->NotifyAccEvent(UM_EVENT_CHILD_REMOVED, pAcc);
  94             //delete all oldValue's existing children
  95             pAgent->DeleteChildrenAccObj( pAcc );
  96             //delete this child
  97             pAgent->DeleteAccObj( pAcc );
  98         }
  99     }
 100
 101 }
 102
 103 /**
 104  *  handle the SELECTION_CHANGED event
 105  */
 106 void AccMenuEventListener::HandleSelectionChangedEventNoArgs()
 107 {
 108     pAgent->NotifyAccEvent(UM_EVENT_SELECTION_CHANGED, m_xAccessible.get());
 109 }
 110
 111 /**
 112  *  handle the Menu_popup event
 113  */
 114 void AccMenuEventListener::FireStatePropertyChange(short state, bool set)
 115 {
 116     if( set )
 117     {
 118         // new value
 119         switch(state)
 120         {
 121             //for sub menu is popup, there is a menu selected event.
 122         case AccessibleStateType::SELECTED:
 123             pAgent->IncreaseState(m_xAccessible.get(), state);
 124             pAgent->UpdateChildState(m_xAccessible.get());
 125             break;
 126         default:
 127             AccComponentEventListener::FireStatePropertyChange(state, set);
 128             break;
 129         }
 130     }
 131     else
 132     {
 133         switch(state)
 134         {
 135             //for sub menu is popup, there is a menu selected event.
 136         case AccessibleStateType::SELECTED:
 137             pAgent->DecreaseState(m_xAccessible.get(), state);
 138
 139             break;
 140         default:
 141             AccComponentEventListener::FireStatePropertyChange(state, set);
 142             break;
 143         }
 144     }
 145 }
 146
 147 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */