winaccessibility/source/service/AccTopWindowListener.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 <cppuhelper/bootstrap.hxx>
  21 #include <com/sun/star/bridge/XUnoUrlResolver.hpp>
  22 #include <com/sun/star/lang/XMultiServiceFactory.hpp>
  23 #include <vcl/window.hxx>
  24 #include <toolkit/awt/Vclxwindow.hxx>
  25
  26 #include <vcl/sysdata.hxx>
  27 #include <vcl/svapp.hxx>
  28
  29 #include "AccTopWindowListener.hxx"
  30 #include "unomsaaevent.hxx"
  31
  32 #include <com/sun/star/awt/XExtendedToolkit.hpp>
  33 #include <com/sun/star/uno/XInterface.hpp>
  34 #include <com/sun/star/accessibility/XAccessibleEventBroadcaster.hpp>
  35 #include <com/sun/star/accessibility/XAccessibleEventListener.hpp>
  36 #include <com/sun/star/accessibility/XAccessibleComponent.hpp>
  37 #include <com/sun/star/accessibility/AccessibleRole.hpp>
  38 #include <com/sun/star/accessibility/AccessibleStateType.hpp>
  39
  40 using namespace com::sun::star::uno;
  41 using namespace com::sun::star::lang;
  42 using namespace com::sun::star::bridge;
  43 using namespace com::sun::star::awt;
  44 using namespace cppu;
  45
  46 /**
  47  *  For the new opened window, generate all the UNO accessible's object, COM object and add
  48  *  accessible listener to monitor all these objects.
  49  *  @param pAccessible      the accessible of the new opened window
  50  */
  51 void AccTopWindowListener::HandleWindowOpened( com::sun::star::accessibility::XAccessible* pAccessible )
  52 {
  53     //get SystemData from window
  54     VCLXWindow* pvclwindow = (VCLXWindow*)pAccessible;
  55     vcl::Window* window = pvclwindow->GetWindow();
  56     // The SalFrame of window may be destructed at this time
  57     const SystemEnvData* systemdata = NULL;
  58     try
  59     {
  60         systemdata = window->GetSystemData();
  61     }
  62     catch(...)
  63     {
  64         systemdata = NULL;
  65     }
  66     Reference<com::sun::star::accessibility::XAccessibleContext> xContext(pAccessible->getAccessibleContext(),UNO_QUERY);
  67     if(!xContext.is())
  68         return;
  69
  70     com::sun::star::accessibility::XAccessibleContext* pAccessibleContext = xContext.get();
  71     //Only AccessibleContext exist, add all listeners
  72     if(pAccessibleContext != NULL && systemdata != NULL)
  73     {
  74         accManagerAgent.SaveTopWindowHandle(
  75                 reinterpret_cast<sal_Int64>(systemdata->hWnd), pAccessible);
  76
  77         AddAllListeners(pAccessible,NULL,(HWND)systemdata->hWnd);
  78
  79         if( window->GetStyle() & WB_MOVEABLE )
  80             accManagerAgent.IncreaseState( pAccessible, (unsigned short) -1 /* U_MOVEBLE */ );
  81
  82         short role = pAccessibleContext->getAccessibleRole();
  83
  84         if (role == com::sun::star::accessibility::AccessibleRole::POPUP_MENU ||
  85                 role == com::sun::star::accessibility::AccessibleRole::MENU )
  86         {
  87             accManagerAgent.NotifyAccEvent(UM_EVENT_MENUPOPUPSTART, pAccessible);
  88         }
  89
  90         if (role == com::sun::star::accessibility::AccessibleRole::FRAME ||
  91                 role == com::sun::star::accessibility::AccessibleRole::DIALOG ||
  92                 role == com::sun::star::accessibility::AccessibleRole::WINDOW ||
  93                 role == com::sun::star::accessibility::AccessibleRole::ALERT)
  94         {
  95             accManagerAgent.NotifyAccEvent(UM_EVENT_SHOW, pAccessible);
  96         }
  97     }
  98 }
  99
 100 AccTopWindowListener::AccTopWindowListener()
 101     : accManagerAgent()
 102 {
 103 }
 104
 105 AccTopWindowListener::~AccTopWindowListener()
 106 {
 107 }
 108
 109 /**
 110  *  It is invoked when a new window is opened, the source of this EventObject is the window
 111  */
 112 void AccTopWindowListener::windowOpened( const ::com::sun::star::lang::EventObject& e ) throw (::com::sun::star::uno::RuntimeException)
 113 {
 114     SAL_INFO( "iacc2", "windowOpened triggered" );
 115
 116     if ( !e.Source.is())
 117         return;
 118
 119     Reference< com::sun::star::accessibility::XAccessible > xAccessible ( e.Source, UNO_QUERY );
 120     com::sun::star::accessibility::XAccessible* pAccessible = xAccessible.get();
 121     if ( !pAccessible )
 122         return;
 123
 124     SolarMutexGuard g;
 125
 126     HandleWindowOpened( pAccessible );
 127 }
 128
 129 /**
 130  *  Add the accessible event listener to object and all its children objects.
 131  *  @param  pAccessible     the accessible object
 132  *  @param  pParentXAcc     the parent of current accessible object
 133  *  @param  pWND            the handle of top window which current object resides
 134  */
 135 void AccTopWindowListener::AddAllListeners(com::sun::star::accessibility::XAccessible* pAccessible, com::sun::star::accessibility::XAccessible* pParentXAcc, HWND pWND)
 136 {
 137     Reference<com::sun::star::accessibility::XAccessibleContext> xContext(pAccessible->getAccessibleContext(),UNO_QUERY);
 138     if(!xContext.is())
 139     {
 140         return;
 141     }
 142     com::sun::star::accessibility::XAccessibleContext* pAccessibleContext = xContext.get();
 143     if(pAccessibleContext == NULL)
 144     {
 145         return;
 146     }
 147
 148     accManagerAgent.InsertAccObj(pAccessible, pParentXAcc,
 149             reinterpret_cast<sal_Int64>(pWND));
 150
 151     if (!accManagerAgent.IsContainer(pAccessible))
 152     {
 153         return;
 154     }
 155
 156
 157     short role = pAccessibleContext->getAccessibleRole();
 158     if(com::sun::star::accessibility::AccessibleRole::DOCUMENT == role ||
 159             com::sun::star::accessibility::AccessibleRole::DOCUMENT_PRESENTATION == role ||
 160             com::sun::star::accessibility::AccessibleRole::DOCUMENT_SPREADSHEET == role ||
 161             com::sun::star::accessibility::AccessibleRole::DOCUMENT_TEXT == role)
 162     {
 163         if(accManagerAgent.IsStateManageDescendant(pAccessible))
 164         {
 165             return ;
 166         }
 167     }
 168
 169
 170     int count = pAccessibleContext->getAccessibleChildCount();
 171     for (int i=0;i<count;i++)
 172     {
 173         Reference<com::sun::star::accessibility::XAccessible> mxAccessible
 174         = pAccessibleContext->getAccessibleChild(i);
 175
 176         com::sun::star::accessibility::XAccessible* mpAccessible = mxAccessible.get();
 177         if(mpAccessible != NULL)
 178         {
 179             Reference<com::sun::star::accessibility::XAccessibleContext> mxAccessibleContext
 180             = mpAccessible->getAccessibleContext();
 181             com::sun::star::accessibility::XAccessibleContext* mpContext = mxAccessibleContext.get();
 182             if(mpContext != NULL)
 183                 AddAllListeners( mpAccessible, pAccessible, pWND);
 184         }
 185     }
 186 }
 187
 188 void AccTopWindowListener::windowClosing( const ::com::sun::star::lang::EventObject& ) throw (::com::sun::star::uno::RuntimeException)
 189 {
 190     SAL_INFO( "iacc2", "windowClosing triggered" );
 191 }
 192
 193 /**
 194  *  Invoke this method when the top window is closed, remove all the objects and its children
 195  *  from current manager's cache, and remove the COM object and the accessible event listener
 196  *  assigned to the accessible objects.
 197  */
 198 void AccTopWindowListener::windowClosed( const ::com::sun::star::lang::EventObject& e ) throw (::com::sun::star::uno::RuntimeException)
 199 {
 200     SAL_INFO( "iacc2", "windowClosed triggered" );
 201
 202     if ( !e.Source.is())
 203         return;
 204
 205     Reference< com::sun::star::accessibility::XAccessible > xAccessible ( e.Source, UNO_QUERY );
 206     com::sun::star::accessibility::XAccessible* pAccessible = xAccessible.get();
 207     if ( pAccessible == NULL)
 208         return;
 209
 210     Reference<com::sun::star::accessibility::XAccessibleContext> xContext(pAccessible->getAccessibleContext(),UNO_QUERY);
 211     if(!xContext.is())
 212     {
 213         return;
 214     }
 215     com::sun::star::accessibility::XAccessibleContext* pAccessibleContext = xContext.get();
 216
 217     short role = -1;
 218     if(pAccessibleContext != NULL)
 219     {
 220         role = pAccessibleContext->getAccessibleRole();
 221
 222         if (role == com::sun::star::accessibility::AccessibleRole::POPUP_MENU ||
 223                 role == com::sun::star::accessibility::AccessibleRole::MENU)
 224         {
 225             accManagerAgent.NotifyAccEvent(UM_EVENT_MENUPOPUPEND, pAccessible);
 226         }
 227     }
 228
 229
 230     accManagerAgent.DeleteChildrenAccObj( pAccessible );
 231     if( role != com::sun::star::accessibility::AccessibleRole::POPUP_MENU )
 232         accManagerAgent.DeleteAccObj( pAccessible );
 233
 234 }
 235
 236 void AccTopWindowListener::windowMinimized( const ::com::sun::star::lang::EventObject& ) throw (::com::sun::star::uno::RuntimeException)
 237 {
 238 }
 239
 240 void AccTopWindowListener::windowNormalized( const ::com::sun::star::lang::EventObject& ) throw (::com::sun::star::uno::RuntimeException)
 241 {
 242 }
 243
 244 void AccTopWindowListener::windowActivated( const ::com::sun::star::lang::EventObject& ) throw (::com::sun::star::uno::RuntimeException)
 245 {
 246 }
 247
 248 void AccTopWindowListener::windowDeactivated( const ::com::sun::star::lang::EventObject& ) throw (::com::sun::star::uno::RuntimeException)
 249 {
 250 }
 251
 252 void AccTopWindowListener::disposing( const ::com::sun::star::lang::EventObject&  ) throw (::com::sun::star::uno::RuntimeException)
 253 {
 254 }
 255
 256 sal_Int64 AccTopWindowListener::GetMSComPtr(
 257         sal_Int64 hWnd, sal_Int64 lParam, sal_Int64 wParam)
 258 {
 259     return accManagerAgent.Get_ToATInterface(hWnd, lParam, wParam);
 260 }
 261
 262 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */