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
|
/* -*- 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 <OConnectionPointHelper.hxx>
#include <OConnectionPointContainerHelper.hxx>
#include <com/sun/star/lang/InvalidListenerException.hpp>
#include <cppuhelper/queryinterface.hxx>
#include <comphelper/sequence.hxx>
// namespaces
using namespace ::osl;
using namespace ::cppu;
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::lang;
namespace unocontrols {
// construct/destruct
OConnectionPointHelper::OConnectionPointHelper(
Mutex& aMutex ,
OConnectionPointContainerHelper* pContainerImplementation ,
Type const & aType
) : m_aSharedMutex ( aMutex )
, m_oContainerWeakReference ( pContainerImplementation )
, m_pContainerImplementation ( pContainerImplementation )
, m_aInterfaceType ( aType )
{
}
OConnectionPointHelper::~OConnectionPointHelper()
{
}
// XInterface
Any SAL_CALL OConnectionPointHelper::queryInterface( const Type& aType )
{
// Attention:
// Don't use mutex or guard in this method!!! Is a method of XInterface.
// Ask for my own supported interfaces ...
Any aReturn ( ::cppu::queryInterface( aType ,
static_cast< XConnectionPoint* > ( this )
)
);
if (aReturn.hasValue())
return aReturn;
// If searched interface not supported by this class ...
// ... ask baseclasses.
return OWeakObject::queryInterface(aType);
}
// XInterface
void SAL_CALL OConnectionPointHelper::acquire() noexcept
{
// Attention:
// Don't use mutex or guard in this method!!! Is a method of XInterface.
// Forward to baseclass
OWeakObject::acquire();
}
// XInterface
void SAL_CALL OConnectionPointHelper::release() noexcept
{
// Attention:
// Don't use mutex or guard in this method!!! Is a method of XInterface.
// Forward to baseclass
OWeakObject::release();
}
// XConnectionPoint
Type SAL_CALL OConnectionPointHelper::getConnectionType()
{
// Ready for multithreading
MutexGuard aGuard( m_aSharedMutex );
// Set default return value, if method failed.
if ( !impl_LockContainer() )
{
throw RuntimeException(u"Container does not exist!"_ustr);
}
// If container reference valid, return right type of supported interfaces of THIS connectionpoint.
Type aReturnType = m_aInterfaceType;
// Don't forget this!
impl_UnlockContainer();
return aReturnType;
}
// XConnectionPoint
Reference< XConnectionPointContainer > SAL_CALL OConnectionPointHelper::getConnectionPointContainer()
{
// Ready for multithreading
MutexGuard aGuard( m_aSharedMutex );
// Convert weakreference to correct uno3-reference and return value. It can be NULL, if container destroyed!
return Reference< XConnectionPointContainer >( m_oContainerWeakReference.get(), UNO_QUERY );
}
// XConnectionPoint
void SAL_CALL OConnectionPointHelper::advise( const Reference< XInterface >& xListener )
{
// Ready for multithreading
MutexGuard aGuard( m_aSharedMutex );
// If type of listener not the same for this special container ...
Any aCheckType = xListener->queryInterface( m_aInterfaceType );
if ( aCheckType.hasValue() )
{
// ... throw an exception.
throw InvalidListenerException();
}
// ListenerExistException is obsolete!?
// It's the same container for XConnectionPointContainer and XConnectionPoint. But only here we must control, if a listener already exist!?
// You can add a listener more than one time at XConnectionPointContainer, but here only one ...
// Operation is permitted only, if reference to container is valid!
if ( !impl_LockContainer() )
{
throw RuntimeException(u"Container does not exist!"_ustr);
}
// Forward it to OConnectionPointHelperContainer!
m_pContainerImplementation->advise( m_aInterfaceType, xListener );
// Don't forget this!
impl_UnlockContainer();
}
// XConnectionPoint
void SAL_CALL OConnectionPointHelper::unadvise( const Reference< XInterface >& xListener )
{
// Ready for multithreading
MutexGuard aGuard( m_aSharedMutex );
// Operation is permitted only, if reference to container is valid!
if ( !impl_LockContainer() )
{
throw RuntimeException(u"Container does not exist!"_ustr);
}
// Forward it to OConnectionPointHelperContainer!
m_pContainerImplementation->unadvise( m_aInterfaceType, xListener );
// Don't forget this!
impl_UnlockContainer();
}
// XConnectionPoint
Sequence< Reference< XInterface > > SAL_CALL OConnectionPointHelper::getConnections()
{
// Ready for multithreading
MutexGuard aGuard( m_aSharedMutex );
// Operation is permitted only, if reference to container is valid!
if ( !impl_LockContainer() )
{
throw RuntimeException(u"Container does not exist!"_ustr);
}
// Set default return value, if method failed.
Sequence< Reference< XInterface > > seqReturnConnections;
// Get reference to private member of OConnectionPointHelperContainer!
comphelper::OMultiTypeInterfaceContainerHelper2& aSharedContainer = m_pContainerImplementation->impl_getMultiTypeContainer();
// Get pointer to specialized container which hold all interfaces of searched type.
comphelper::OInterfaceContainerHelper2* pSpecialContainer = aSharedContainer.getContainer( m_aInterfaceType );
// Get elements of searched type, if some else exist.
if ( pSpecialContainer != nullptr )
{
seqReturnConnections = comphelper::containerToSequence(pSpecialContainer->getElements());
}
// Don't forget this!
impl_UnlockContainer();
return seqReturnConnections;
}
// private method
bool OConnectionPointHelper::impl_LockContainer()
{
// Convert weakreference to hard uno3-reference and return state.
// If this reference different from NULL, there exist a hard reference to container. Container-instance can't be destroyed.
// Don't forget to "unlock" this reference!
m_xLock = m_oContainerWeakReference.get();
return m_xLock.is();
}
// private method
void OConnectionPointHelper::impl_UnlockContainer()
{
// Free hard uno3-reference to container.
// see also "impl_LockContainer()"
m_xLock.clear();
}
} // namespace unocontrols
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
