1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314 | /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <rtl/ref.hxx>
#include <sal/log.hxx>
#include <cppuhelper/implbase.hxx>
#include <cppuhelper/factory.hxx>
#include <cppuhelper/implementationentry.hxx>
#include <cppuhelper/supportsservice.hxx>
#include <com/sun/star/lang/XServiceInfo.hpp>
#include <com/sun/star/accessibility/XMSAAService.hpp>
#include <com/sun/star/accessibility/AccessibleRole.hpp>
#include <com/sun/star/awt/XExtendedToolkit.hpp>
#include <vcl/svapp.hxx>
#include <vcl/window.hxx>
#include <prewin.h>
#include <postwin.h>
using namespace ::com::sun::star; // for odk interfaces
using namespace ::com::sun::star::uno; // for basic types
using namespace ::com::sun::star::accessibility;
using namespace ::com::sun::star::awt;
#include <AccTopWindowListener.hxx>
namespace my_sc_impl
{
static Sequence< OUString > getSupportedServiceNames_MSAAServiceImpl()
{
Sequence< OUString > seqNames { "com.sun.star.accessibility.MSAAService" };
return seqNames;
}
static OUString getImplementationName_MSAAServiceImpl()
{
return "com.sun.star.accessibility.my_sc_implementation.MSAAService";
}
namespace {
class MSAAServiceImpl : public ::cppu::WeakImplHelper<
XMSAAService, lang::XServiceInfo >
{
private:
rtl::Reference<AccTopWindowListener> m_pTopWindowListener;
public:
MSAAServiceImpl ();
// XComponent - as used by VCL to lifecycle manage this bridge.
virtual void SAL_CALL dispose() override;
virtual void SAL_CALL addEventListener( const css::uno::Reference< css::lang::XEventListener >& ) override
{ /* dummy */ }
virtual void SAL_CALL removeEventListener( const css::uno::Reference< css::lang::XEventListener >& ) override
{ /* dummy */ }
// XMSAAService
virtual sal_Int64 SAL_CALL getAccObjectPtr(
sal_Int64 hWnd, sal_Int64 lParam, sal_Int64 wParam) override;
virtual void SAL_CALL handleWindowOpened(sal_Int64) override;
// XServiceInfo
virtual OUString SAL_CALL getImplementationName() override;
virtual sal_Bool SAL_CALL supportsService( OUString const & serviceName ) override;
virtual Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
};
}
/**
* Implementation of getAccObjectPtr.
* @param
* @return Com interface.
*/
sal_Int64 MSAAServiceImpl::getAccObjectPtr(
sal_Int64 hWnd, sal_Int64 lParam, sal_Int64 wParam)
{
SolarMutexGuard g;
if (!m_pTopWindowListener.is())
{
return 0;
}
return m_pTopWindowListener->GetMSComPtr(hWnd, lParam, wParam);
}
/**
* Implementation of handleWindowOpened, the method will be invoked when a
* top window is opened and AT starts up.
* @param
* @return
*/
void MSAAServiceImpl::handleWindowOpened(sal_Int64 nAcc)
{
SolarMutexGuard g;
SAL_INFO( "iacc2", "Window opened " << nAcc );
if (m_pTopWindowListener.is() && nAcc)
{
m_pTopWindowListener->HandleWindowOpened(
static_cast<css::accessibility::XAccessible*>(
reinterpret_cast<void*>(nAcc)));
}
}
OUString MSAAServiceImpl::getImplementationName()
{
return getImplementationName_MSAAServiceImpl();
}
/**
* Implementation of XServiceInfo, return support service name.
* @param Service name.
* @return If the service name is supported.
*/
sal_Bool MSAAServiceImpl::supportsService( OUString const & serviceName )
{
return cppu::supportsService(this, serviceName);
}
/**
* Implementation of XServiceInfo, return all service names.
* @param.
* @return service name sequence.
*/
Sequence< OUString > MSAAServiceImpl::getSupportedServiceNames()
{
return getSupportedServiceNames_MSAAServiceImpl();
}
static void AccessBridgeHandleExistingWindow(const Reference< XMSAAService > &xAccMgr,
vcl::Window *pWindow, bool bShow)
{
if ( pWindow )
{
css::uno::Reference< css::accessibility::XAccessible > xAccessible;
SAL_INFO( "iacc2", "Decide whether to register existing window with IAccessible2" );
// Test for combo box - drop down floating windows first
vcl::Window * pParentWindow = pWindow->GetParent();
if ( pParentWindow )
{
try
{
// The parent window of a combo box floating window should have the role COMBO_BOX
css::uno::Reference< css::accessibility::XAccessible > xParentAccessible(pParentWindow->GetAccessible());
if ( xParentAccessible.is() )
{
css::uno::Reference< css::accessibility::XAccessibleContext > xParentAC( xParentAccessible->getAccessibleContext() );
if ( xParentAC.is() && (css::accessibility::AccessibleRole::COMBO_BOX == xParentAC->getAccessibleRole()) )
{
// O.k. - this is a combo box floating window corresponding to the child of role LIST of the parent.
// Let's not rely on a specific child order, just search for the child with the role LIST
sal_Int32 nCount = xParentAC->getAccessibleChildCount();
for ( sal_Int32 n = 0; (n < nCount) && !xAccessible.is(); n++)
{
css::uno::Reference< css::accessibility::XAccessible > xChild = xParentAC->getAccessibleChild(n);
if ( xChild.is() )
{
css::uno::Reference< css::accessibility::XAccessibleContext > xChildAC = xChild->getAccessibleContext();
if ( xChildAC.is() && (css::accessibility::AccessibleRole::LIST == xChildAC->getAccessibleRole()) )
{
xAccessible = xChild;
}
}
}
}
}
}
catch (css::uno::RuntimeException const&)
{
// Ignore show events that throw DisposedExceptions in getAccessibleContext(),
// but keep revoking these windows in hide(s).
if (bShow)
return;
}
}
// We have to rely on the fact that Window::GetAccessible()->getAccessibleContext() returns a valid XAccessibleContext
// also for other menus than menubar or toplevel popup window. Otherwise we had to traverse the hierarchy to find the
// context object to this menu floater. This makes the call to Window->IsMenuFloatingWindow() obsolete.
if ( ! xAccessible.is() )
xAccessible = pWindow->GetAccessible();
assert( xAccMgr.is() );
if ( xAccessible.is() )
{
xAccMgr->handleWindowOpened(
reinterpret_cast<sal_Int64>(xAccessible.get()));
SAL_INFO( "iacc2", "Decide whether to register existing window with IAccessible2" );
}
}
}
/*
* Setup and notify the OS of Accessible peers for all existing windows.
*/
static void AccessBridgeUpdateOldTopWindows( const Reference< XMSAAService > &xAccMgr )
{
sal_uInt16 nTopWindowCount = static_cast<sal_uInt16>(Application::GetTopWindowCount());
for ( sal_uInt16 i = 0; i < nTopWindowCount; i++ )
{
vcl::Window* pTopWindow = Application::GetTopWindow( i );
css::uno::Reference< css::accessibility::XAccessible > xAccessible = pTopWindow->GetAccessible();
if ( xAccessible.is() )
{
css::uno::Reference< css::accessibility::XAccessibleContext > xAC( xAccessible->getAccessibleContext() );
if ( xAC.is())
{
if ( !xAC->getAccessibleName().isEmpty() )
AccessBridgeHandleExistingWindow( xAccMgr, pTopWindow, true );
}
}
}
}
/**
* Static method that can create an entity of our MSAA Service
* @param xContext No use here.
* @return The object interface.
*/
static Reference< XInterface > create_MSAAServiceImpl( Reference< XComponentContext > const & /*xContext*/ )
{
Reference< XMSAAService > xAccMgr( new MSAAServiceImpl() );
AccessBridgeUpdateOldTopWindows( xAccMgr );
SAL_INFO("iacc2", "Created new IAccessible2 service impl.");
return xAccMgr;
}
MSAAServiceImpl::MSAAServiceImpl()
{
Reference< XExtendedToolkit > xToolkit(Application::GetVCLToolkit(), UNO_QUERY);
if( xToolkit.is() )
{
m_pTopWindowListener.set(new AccTopWindowListener());
Reference<XTopWindowListener> const xRef(m_pTopWindowListener.get());
xToolkit->addTopWindowListener( xRef );
SAL_INFO( "iacc2", "successfully connected to the toolkit event hose" );
}
else
SAL_WARN( "iacc2", "No VCL toolkit interface to listen to for events");
}
void MSAAServiceImpl::dispose()
{
SolarMutexGuard g;
// As all folders and streams contain references to their parents,
// we must remove these references so that they will be deleted when
// the hash_map of the root folder is cleared, releasing all subfolders
// and substreams which in turn release theirs, etc. When xRootFolder is
// released when this destructor completes, the folder tree should be
// deleted fully (and automagically).
m_pTopWindowListener.clear();
}
}
/* shared lib exports implemented without helpers in service_impl1.cxx */
namespace my_sc_impl
{
static struct ::cppu::ImplementationEntry s_component_entries [] =
{
{
create_MSAAServiceImpl, getImplementationName_MSAAServiceImpl,
getSupportedServiceNames_MSAAServiceImpl,
::cppu::createSingleComponentFactory,
nullptr, 0
},
{ nullptr, nullptr, nullptr, nullptr, nullptr, 0 }
};
}
extern "C"
{
SAL_DLLPUBLIC_EXPORT void * iacc2_component_getFactory(<--- The function 'iacc2_component_getFactory' is never used.
sal_Char const * implName, lang::XMultiServiceFactory * xMgr,
registry::XRegistryKey * xRegistry )
{
return ::cppu::component_getFactoryHelper(
implName, xMgr, xRegistry, ::my_sc_impl::s_component_entries );
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|