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
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
|
/* -*- 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 <cppuhelper/supportsservice.hxx>
#include <comphelper/interfacecontainer2.hxx>
#include <com/sun/star/util/CloseVetoException.hpp>
#include <com/sun/star/util/XCloseBroadcaster.hpp>
#include <com/sun/star/util/XCloseable.hpp>
#include <com/sun/star/lang/DisposedException.hpp>
#include <com/sun/star/lang/IllegalArgumentException.hpp>
#include <com/sun/star/frame/XDesktop.hpp>
#include <com/sun/star/frame/TerminationVetoException.hpp>
#include <com/sun/star/frame/DoubleInitializationException.hpp>
#include <com/sun/star/embed/Actions.hpp>
#include <com/sun/star/embed/XActionsApproval.hpp>
#include "instancelocker.hxx"
namespace com::sun::star::uno { class XComponentContext; }
using namespace ::com::sun::star;
// OInstanceLocker
OInstanceLocker::OInstanceLocker()
: m_bDisposed( false )
, m_bInitialized( false )
{
}
OInstanceLocker::~OInstanceLocker()
{
if ( !m_bDisposed )
{
osl_atomic_increment(&m_refCount); // to call dispose
try {
dispose();
}
catch ( uno::RuntimeException& )
{}
}
}
// XComponent
void SAL_CALL OInstanceLocker::dispose()
{
std::unique_lock aGuard( m_aMutex );
if ( m_bDisposed )
throw lang::DisposedException();
lang::EventObject aSource( static_cast< ::cppu::OWeakObject* >(this) );
m_aListenersContainer.disposeAndClear( aGuard, aSource );
aGuard.lock();
if ( m_xLockListener.is() )
{
auto tmp = std::move(m_xLockListener);
aGuard.unlock();
tmp->Dispose();
aGuard.lock();
}
m_bDisposed = true;
}
void SAL_CALL OInstanceLocker::addEventListener( const uno::Reference< lang::XEventListener >& xListener )
{
std::scoped_lock aGuard( m_aMutex );
if ( m_bDisposed )
throw lang::DisposedException(); // TODO
m_aListenersContainer.addInterface( xListener );
}
void SAL_CALL OInstanceLocker::removeEventListener( const uno::Reference< lang::XEventListener >& xListener )
{
std::scoped_lock aGuard( m_aMutex );
m_aListenersContainer.removeInterface( xListener );
}
// XInitialization
void SAL_CALL OInstanceLocker::initialize( const uno::Sequence< uno::Any >& aArguments )
{
std::unique_lock aGuard( m_aMutex );
if ( m_bInitialized )
throw frame::DoubleInitializationException();
if ( m_bDisposed )
throw lang::DisposedException(); // TODO
if ( !m_refCount )
throw uno::RuntimeException(); // the object must be refcounted already!
uno::Reference< uno::XInterface > xInstance;
uno::Reference< embed::XActionsApproval > xApproval;
try
{
sal_Int32 nLen = aArguments.getLength();
if ( nLen < 2 || nLen > 3 )
throw lang::IllegalArgumentException(
"Wrong count of parameters!",
uno::Reference< uno::XInterface >(),
0 );
if ( !( aArguments[0] >>= xInstance ) || !xInstance.is() )
throw lang::IllegalArgumentException(
"Nonempty reference is expected as the first argument!",
uno::Reference< uno::XInterface >(),
0 );
sal_Int32 nModes = 0;
if (
!( aArguments[1] >>= nModes ) ||
(
!( nModes & embed::Actions::PREVENT_CLOSE ) &&
!( nModes & embed::Actions::PREVENT_TERMINATION )
)
)
{
throw lang::IllegalArgumentException(
"The correct modes set is expected as the second argument!",
uno::Reference< uno::XInterface >(),
0 );
}
if ( nLen == 3 && !( aArguments[2] >>= xApproval ) )
throw lang::IllegalArgumentException(
"If the third argument is provided, it must be XActionsApproval implementation!",
uno::Reference< uno::XInterface >(),
0 );
m_xLockListener = new OLockListener( uno::Reference< lang::XComponent > ( static_cast< lang::XComponent* >( this ) ),
xInstance,
nModes,
xApproval );
m_xLockListener->Init();
}
catch( uno::Exception& )
{
aGuard.unlock();
dispose();
throw;
}
m_bInitialized = true;
}
// XServiceInfo
OUString SAL_CALL OInstanceLocker::getImplementationName( )
{
return "com.sun.star.comp.embed.InstanceLocker";
}
sal_Bool SAL_CALL OInstanceLocker::supportsService( const OUString& ServiceName )
{
return cppu::supportsService(this, ServiceName);
}
uno::Sequence< OUString > SAL_CALL OInstanceLocker::getSupportedServiceNames()
{
return { "com.sun.star.embed.InstanceLocker" };
}
// OLockListener
OLockListener::OLockListener( const uno::WeakReference< lang::XComponent >& xWrapper,
const uno::Reference< uno::XInterface >& xInstance,
sal_Int32 nMode,
const uno::Reference< embed::XActionsApproval >& rApproval )
: m_xInstance( xInstance )
, m_xApproval( rApproval )
, m_xWrapper( xWrapper )
, m_bDisposed( false )
, m_bInitialized( false )
, m_nMode( nMode )
{
}
OLockListener::~OLockListener()
{
}
void OLockListener::Dispose()
{
std::unique_lock aGuard( m_aMutex );
if ( m_bDisposed )
return;
auto xInstance = std::move(m_xInstance);
auto nMode = m_nMode;
m_bDisposed = true;
aGuard.unlock();
if ( nMode & embed::Actions::PREVENT_CLOSE )
{
try
{
uno::Reference< util::XCloseBroadcaster > xCloseBroadcaster( xInstance, uno::UNO_QUERY );
if ( xCloseBroadcaster.is() )
xCloseBroadcaster->removeCloseListener( static_cast< util::XCloseListener* >( this ) );
uno::Reference< util::XCloseable > xCloseable( xInstance, uno::UNO_QUERY );
if ( xCloseable.is() )
xCloseable->close( true );
}
catch( uno::Exception& )
{}
}
if ( nMode & embed::Actions::PREVENT_TERMINATION )
{
try
{
uno::Reference< frame::XDesktop > xDesktop( xInstance, uno::UNO_QUERY_THROW );
xDesktop->removeTerminateListener( static_cast< frame::XTerminateListener* >( this ) );
}
catch( uno::Exception& )
{}
}
}
// XEventListener
void SAL_CALL OLockListener::disposing( const lang::EventObject& aEvent )
{
std::unique_lock aGuard( m_aMutex );
// object is disposed
if ( aEvent.Source != m_xInstance )
return;
// the object does not listen for anything any more
m_nMode = 0;
// dispose the wrapper;
uno::Reference< lang::XComponent > xComponent( m_xWrapper.get(), uno::UNO_QUERY );
aGuard.unlock();
if ( xComponent.is() )
{
try { xComponent->dispose(); }
catch( uno::Exception& ){}
}
}
// XCloseListener
void SAL_CALL OLockListener::queryClosing( const lang::EventObject& aEvent, sal_Bool )
{
// GetsOwnership parameter is always ignored, the user of the service must close the object always
std::unique_lock aGuard( m_aMutex );
if ( !(!m_bDisposed && aEvent.Source == m_xInstance && ( m_nMode & embed::Actions::PREVENT_CLOSE )) )
return;
try
{
uno::Reference< embed::XActionsApproval > xApprove = m_xApproval;
// unlock the mutex here
aGuard.unlock();
if ( xApprove.is() && xApprove->approveAction( embed::Actions::PREVENT_CLOSE ) )
throw util::CloseVetoException();
}
catch( util::CloseVetoException& )
{
// rethrow this exception
throw;
}
catch( uno::Exception& )
{
// no action should be done
}
}
void SAL_CALL OLockListener::notifyClosing( const lang::EventObject& aEvent )
{
std::unique_lock aGuard( m_aMutex );
// object is closed, no reason to listen
if ( aEvent.Source != m_xInstance )
return;
uno::Reference< util::XCloseBroadcaster > xCloseBroadcaster( aEvent.Source, uno::UNO_QUERY );
if ( !xCloseBroadcaster.is() )
return;
xCloseBroadcaster->removeCloseListener( static_cast< util::XCloseListener* >( this ) );
m_nMode &= ~embed::Actions::PREVENT_CLOSE;
if ( !m_nMode )
{
// dispose the wrapper;
uno::Reference< lang::XComponent > xComponent( m_xWrapper.get(), uno::UNO_QUERY );
aGuard.unlock();
if ( xComponent.is() )
{
try { xComponent->dispose(); }
catch( uno::Exception& ){}
}
}
}
// XTerminateListener
void SAL_CALL OLockListener::queryTermination( const lang::EventObject& aEvent )
{
std::unique_lock aGuard( m_aMutex );
if ( !(aEvent.Source == m_xInstance && ( m_nMode & embed::Actions::PREVENT_TERMINATION )) )
return;
try
{
uno::Reference< embed::XActionsApproval > xApprove = m_xApproval;
// unlock the mutex here
aGuard.unlock();
if ( xApprove.is() && xApprove->approveAction( embed::Actions::PREVENT_TERMINATION ) )
throw frame::TerminationVetoException();
}
catch( frame::TerminationVetoException& )
{
// rethrow this exception
throw;
}
catch( uno::Exception& )
{
// no action should be done
}
}
void SAL_CALL OLockListener::notifyTermination( const lang::EventObject& aEvent )
{
std::unique_lock aGuard( m_aMutex );
// object is terminated, no reason to listen
if ( aEvent.Source != m_xInstance )
return;
uno::Reference< frame::XDesktop > xDesktop( aEvent.Source, uno::UNO_QUERY );
if ( !xDesktop.is() )
return;
try
{
xDesktop->removeTerminateListener( static_cast< frame::XTerminateListener* >( this ) );
m_nMode &= ~embed::Actions::PREVENT_TERMINATION;
if ( !m_nMode )
{
// dispose the wrapper;
uno::Reference< lang::XComponent > xComponent( m_xWrapper.get(), uno::UNO_QUERY );
aGuard.unlock();
if ( xComponent.is() )
{
try { xComponent->dispose(); }
catch( uno::Exception& ){}
}
}
}
catch( uno::Exception& )
{}
}
// XInitialization
void OLockListener::Init()
{
std::unique_lock aGuard( m_aMutex );
if ( m_bDisposed || m_bInitialized )
return;
try
{
if ( m_nMode & embed::Actions::PREVENT_CLOSE )
{
uno::Reference< util::XCloseBroadcaster > xCloseBroadcaster( m_xInstance, uno::UNO_QUERY_THROW );
xCloseBroadcaster->addCloseListener( static_cast< util::XCloseListener* >( this ) );
}
if ( m_nMode & embed::Actions::PREVENT_TERMINATION )
{
uno::Reference< frame::XDesktop > xDesktop( m_xInstance, uno::UNO_QUERY_THROW );
xDesktop->addTerminateListener( static_cast< frame::XTerminateListener* >( this ) );
}
}
catch( uno::Exception& )
{
// dispose the wrapper;
uno::Reference< lang::XComponent > xComponent( m_xWrapper.get(), uno::UNO_QUERY );
aGuard.unlock();
if ( xComponent.is() )
{
try { xComponent->dispose(); }
catch( uno::Exception& ){}
}
throw;
}
m_bInitialized = true;
}
extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface *
com_sun_star_comp_embed_InstanceLocker(
css::uno::XComponentContext *,
css::uno::Sequence<css::uno::Any> const &)
{
return cppu::acquire(new OInstanceLocker());
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|