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
|
/* -*- 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 <com/sun/star/document/EventObject.hpp>
#include <com/sun/star/drawing/XShapes.hpp>
#include <com/sun/star/lang/IndexOutOfBoundsException.hpp>
#include <com/sun/star/lang/XComponent.hpp>
#include <com/sun/star/lang/XServiceInfo.hpp>
#include <com/sun/star/uno/XComponentContext.hpp>
#include <cppuhelper/implbase3.hxx>
#include <cppuhelper/interfacecontainer.hxx>
#include <comphelper/interfacecontainer2.hxx>
#include <cppuhelper/supportsservice.hxx>
#include <osl/mutex.hxx>
#include <sal/log.hxx>
using namespace ::com::sun::star;
using namespace ::com::sun::star::uno;
namespace {
class SvxShapeCollectionMutex
{
public:
::osl::Mutex maMutex;
};
class SvxShapeCollection :
public cppu::WeakAggImplHelper3<drawing::XShapes, lang::XServiceInfo, lang::XComponent>,
public SvxShapeCollectionMutex
{
private:
comphelper::OInterfaceContainerHelper2 maShapeContainer;
cppu::OBroadcastHelper mrBHelper;
public:
SvxShapeCollection() throw();
// XInterface
virtual void SAL_CALL release() throw() override;
// XComponent
virtual void SAL_CALL dispose() override;
virtual void SAL_CALL addEventListener( const css::uno::Reference< css::lang::XEventListener >& aListener ) override;
virtual void SAL_CALL removeEventListener( const css::uno::Reference< css::lang::XEventListener >& aListener ) override;
// XIndexAccess
virtual sal_Int32 SAL_CALL getCount() override ;
virtual css::uno::Any SAL_CALL getByIndex( sal_Int32 Index ) override;
// XElementAccess
virtual css::uno::Type SAL_CALL getElementType() override;
virtual sal_Bool SAL_CALL hasElements() override;
// XShapes
virtual void SAL_CALL add( const css::uno::Reference< css::drawing::XShape >& xShape ) override;
virtual void SAL_CALL remove( const css::uno::Reference< css::drawing::XShape >& xShape ) override;
// XServiceInfo
virtual OUString SAL_CALL getImplementationName() override;
virtual sal_Bool SAL_CALL supportsService( const OUString& ServiceName ) override;
virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
};
SvxShapeCollection::SvxShapeCollection() throw()
: maShapeContainer( maMutex ), mrBHelper( maMutex )
{
}
// XInterface
void SvxShapeCollection::release() throw()
{
uno::Reference< uno::XInterface > x( xDelegator );
if (! x.is())
{
if (osl_atomic_decrement( &m_refCount ) == 0)
{
if (! mrBHelper.bDisposed)
{
uno::Reference< uno::XInterface > xHoldAlive( static_cast<uno::XWeak*>(this) );
// First dispose
try
{
dispose();
}
catch(css::uno::Exception&)
{
// release should not throw exceptions
}
// only the alive ref holds the object
OSL_ASSERT( m_refCount == 1 );
// destroy the object if xHoldAlive decrement the refcount to 0
return;
}
}
// restore the reference count
osl_atomic_increment( &m_refCount );
}
OWeakAggObject::release();
}
// XComponent
void SvxShapeCollection::dispose()
{
// An frequently programming error is to release the last
// reference to this object in the disposing message.
// Make it robust, hold a self Reference.
uno::Reference< lang::XComponent > xSelf( this );
// Guard dispose against multiple threading
// Remark: It is an error to call dispose more than once
bool bDoDispose = false;
{
osl::MutexGuard aGuard( mrBHelper.rMutex );
if( !mrBHelper.bDisposed && !mrBHelper.bInDispose )
{
// only one call go into this section
mrBHelper.bInDispose = true;
bDoDispose = true;
}
}
// Do not hold the mutex because we are broadcasting
if( bDoDispose )
{
// Create an event with this as sender
try
{
uno::Reference< uno::XInterface > xSource( uno::Reference< uno::XInterface >::query( static_cast<lang::XComponent *>(this) ) );
document::EventObject aEvt;
aEvt.Source = xSource;
// inform all listeners to release this object
// The listener container are automatically cleared
mrBHelper.aLC.disposeAndClear( aEvt );
maShapeContainer.clear();
}
catch(const css::uno::Exception&)
{
// catch exception and throw again but signal that
// the object was disposed. Dispose should be called
// only once.
mrBHelper.bDisposed = true;
mrBHelper.bInDispose = false;
throw;
}
// the values bDispose and bInDisposing must set in this order.
// No multithread call overcome the "!rBHelper.bDisposed && !rBHelper.bInDispose" guard.
mrBHelper.bDisposed = true;
mrBHelper.bInDispose = false;
}
else
{
// in a multithreaded environment, it can't be avoided, that dispose is called twice.
// However this condition is traced, because it MAY indicate an error.
SAL_INFO("svx", "dispose called twice" );
}
}
// XComponent
void SAL_CALL SvxShapeCollection::addEventListener( const css::uno::Reference< css::lang::XEventListener >& aListener )
{
mrBHelper.addListener( cppu::UnoType<decltype(aListener)>::get() , aListener );
}
// XComponent
void SAL_CALL SvxShapeCollection::removeEventListener( const css::uno::Reference< css::lang::XEventListener >& aListener )
{
mrBHelper.removeListener( cppu::UnoType<decltype(aListener)>::get() , aListener );
}
// XShapes
void SAL_CALL SvxShapeCollection::add( const Reference< drawing::XShape >& xShape )
{
maShapeContainer.addInterface( xShape );
}
void SAL_CALL SvxShapeCollection::remove( const uno::Reference< drawing::XShape >& xShape )
{
maShapeContainer.removeInterface( xShape );
}
sal_Int32 SAL_CALL SvxShapeCollection::getCount()
{
return maShapeContainer.getLength();
}
uno::Any SAL_CALL SvxShapeCollection::getByIndex( sal_Int32 Index )
{
if( Index < 0 || Index >= getCount() )
throw lang::IndexOutOfBoundsException();
std::vector< Reference< uno::XInterface> > aElements( maShapeContainer.getElements() );
return uno::makeAny( Reference< drawing::XShape>(static_cast< drawing::XShape* >( aElements[Index].get())) );
}
// XElementAccess
uno::Type SAL_CALL SvxShapeCollection::getElementType()
{
return cppu::UnoType<drawing::XShape>::get();
}
sal_Bool SAL_CALL SvxShapeCollection::hasElements()
{
return getCount() != 0;
}
// XServiceInfo
OUString SAL_CALL SvxShapeCollection::getImplementationName()
{
return "com.sun.star.drawing.SvxShapeCollection";
}
sal_Bool SAL_CALL SvxShapeCollection::supportsService( const OUString& ServiceName )
{
return cppu::supportsService( this, ServiceName);
}
uno::Sequence< OUString > SAL_CALL SvxShapeCollection::getSupportedServiceNames()
{
return { "com.sun.star.drawing.Shapes", "com.sun.star.drawing.ShapeCollection" };
}
}
extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface *
com_sun_star_drawing_SvxShapeCollection_get_implementation(
css::uno::XComponentContext *,
css::uno::Sequence<css::uno::Any> const &)
{
return cppu::acquire(new SvxShapeCollection);
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
