Line data Source code
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 "OConnectionPointHelper.hxx"
21 :
22 : #include "OConnectionPointContainerHelper.hxx"
23 :
24 : //______________________________________________________________________________________________________________
25 : // namespaces
26 : //______________________________________________________________________________________________________________
27 :
28 : using namespace ::rtl ;
29 : using namespace ::osl ;
30 : using namespace ::cppu ;
31 : using namespace ::com::sun::star::uno ;
32 : using namespace ::com::sun::star::lang ;
33 :
34 : namespace unocontrols{
35 :
36 : //______________________________________________________________________________________________________________
37 : // construct/destruct
38 : //______________________________________________________________________________________________________________
39 :
40 0 : OConnectionPointHelper::OConnectionPointHelper(
41 : Mutex& aMutex ,
42 : OConnectionPointContainerHelper* pContainerImplementation ,
43 : Type aType
44 : ) : m_aSharedMutex ( aMutex )
45 : , m_oContainerWeakReference ( pContainerImplementation )
46 : , m_pContainerImplementation ( pContainerImplementation )
47 0 : , m_aInterfaceType ( aType )
48 : {
49 0 : }
50 :
51 0 : OConnectionPointHelper::~OConnectionPointHelper()
52 : {
53 0 : }
54 :
55 : //____________________________________________________________________________________________________________
56 : // XInterface
57 : //____________________________________________________________________________________________________________
58 :
59 0 : Any SAL_CALL OConnectionPointHelper::queryInterface( const Type& aType ) throw( RuntimeException )
60 : {
61 : // Attention:
62 : // Don't use mutex or guard in this method!!! Is a method of XInterface.
63 :
64 : // Ask for my own supported interfaces ...
65 : Any aReturn ( ::cppu::queryInterface( aType ,
66 : static_cast< XConnectionPoint* > ( this )
67 : )
68 0 : );
69 :
70 : // If searched interface not supported by this class ...
71 0 : if ( aReturn.hasValue() == sal_False )
72 : {
73 : // ... ask baseclasses.
74 0 : aReturn = OWeakObject::queryInterface( aType );
75 : }
76 :
77 0 : return aReturn ;
78 : }
79 :
80 : //____________________________________________________________________________________________________________
81 : // XInterface
82 : //____________________________________________________________________________________________________________
83 :
84 0 : void SAL_CALL OConnectionPointHelper::acquire() throw()
85 : {
86 : // Attention:
87 : // Don't use mutex or guard in this method!!! Is a method of XInterface.
88 :
89 : // Forward to baseclass
90 0 : OWeakObject::acquire();
91 0 : }
92 :
93 : //____________________________________________________________________________________________________________
94 : // XInterface
95 : //____________________________________________________________________________________________________________
96 :
97 0 : void SAL_CALL OConnectionPointHelper::release() throw()
98 : {
99 : // Attention:
100 : // Don't use mutex or guard in this method!!! Is a method of XInterface.
101 :
102 : // Forward to baseclass
103 0 : OWeakObject::release();
104 0 : }
105 :
106 : //______________________________________________________________________________________________________________
107 : // XConnectionPoint
108 : //______________________________________________________________________________________________________________
109 :
110 0 : Type SAL_CALL OConnectionPointHelper::getConnectionType() throw( RuntimeException )
111 : {
112 : // Ready for multithreading
113 0 : MutexGuard aGuard( m_aSharedMutex );
114 :
115 : // Set default return value, if method failed.
116 0 : if ( impl_LockContainer() == sal_False )
117 : {
118 : // Container not exist! Its an runtime error.
119 0 : throw RuntimeException();
120 : }
121 :
122 : // If container reference valid, return right type of supported interfaces of THIS connectionpoint.
123 0 : Type aReturnType = m_aInterfaceType ;
124 : // Don't forget this!
125 0 : impl_UnlockContainer();
126 :
127 0 : return aReturnType;
128 : }
129 :
130 : //______________________________________________________________________________________________________________
131 : // XConnectionPoint
132 : //______________________________________________________________________________________________________________
133 :
134 0 : Reference< XConnectionPointContainer > SAL_CALL OConnectionPointHelper::getConnectionPointContainer() throw( RuntimeException )
135 : {
136 : // Ready for multithreading
137 0 : MutexGuard aGuard( m_aSharedMutex );
138 : // Convert weakreference to correct uno3-reference and return value. It can be NULL, if container destroyed!
139 0 : return Reference< XConnectionPointContainer >( m_oContainerWeakReference.get(), UNO_QUERY );
140 : }
141 :
142 : //______________________________________________________________________________________________________________
143 : // XConnectionPoint
144 : //______________________________________________________________________________________________________________
145 :
146 0 : void SAL_CALL OConnectionPointHelper::advise( const Reference< XInterface >& xListener ) throw( ListenerExistException ,
147 : InvalidListenerException ,
148 : RuntimeException )
149 : {
150 : // Ready for multithreading
151 0 : MutexGuard aGuard( m_aSharedMutex );
152 :
153 : // If type of listener not the same for this special container ...
154 0 : Any aCheckType = xListener->queryInterface( m_aInterfaceType );
155 0 : if ( aCheckType.hasValue() )
156 : {
157 : // ... throw an exception.
158 0 : throw InvalidListenerException();
159 : }
160 :
161 : // ListenerExistException is obsolete!?
162 : // Its the same container for XConnectionPointContainer and XConnectionPoint. But only here we must control, if a listener already exist!?
163 : // You can add a listener more then one time at XConnectionPointContainer, but here only one ...
164 :
165 : // Operation is permitted only, if reference to container is valid!
166 0 : if ( impl_LockContainer() == sal_False )
167 : {
168 : // Container not exist! Its an runtime error.
169 0 : throw RuntimeException();
170 : }
171 : // Forward it to OConnectionPointHelperContainer!
172 0 : m_pContainerImplementation->advise( m_aInterfaceType, xListener );
173 : // Don't forget this!
174 0 : impl_UnlockContainer();
175 0 : }
176 :
177 : //______________________________________________________________________________________________________________
178 : // XConnectionPoint
179 : //______________________________________________________________________________________________________________
180 :
181 0 : void SAL_CALL OConnectionPointHelper::unadvise( const Reference< XInterface >& xListener ) throw( RuntimeException )
182 : {
183 : // Ready for multithreading
184 0 : MutexGuard aGuard( m_aSharedMutex );
185 : // Operation is permitted only, if reference to container is valid!
186 0 : if ( impl_LockContainer() == sal_False )
187 : {
188 : // Container not exist! Its an runtime error.
189 0 : throw RuntimeException();
190 :
191 : }
192 : // Forward it to OConnectionPointHelperContainer!
193 0 : m_pContainerImplementation->unadvise( m_aInterfaceType, xListener );
194 : // Don't forget this!
195 0 : impl_UnlockContainer();
196 0 : }
197 :
198 : //______________________________________________________________________________________________________________
199 : // XConnectionPoint
200 : //______________________________________________________________________________________________________________
201 :
202 0 : Sequence< Reference< XInterface > > SAL_CALL OConnectionPointHelper::getConnections() throw( RuntimeException )
203 : {
204 : // Ready for multithreading
205 0 : MutexGuard aGuard( m_aSharedMutex );
206 : // Operation is permitted only, if reference to container is valid!
207 0 : if ( impl_LockContainer() == sal_False )
208 : {
209 : // Container not exist! Its an runtime error.
210 0 : throw RuntimeException();
211 : }
212 : // Set default return value, if method failed.
213 0 : Sequence< Reference< XInterface > > seqReturnConnections = Sequence< Reference< XInterface > >();
214 : // Get reference to private member of OConnectionPointHelperContainer!
215 0 : OMultiTypeInterfaceContainerHelper& aSharedContainer = m_pContainerImplementation->impl_getMultiTypeContainer();
216 : // Get pointer to specialized container which hold all interfaces of searched type.
217 0 : OInterfaceContainerHelper* pSpecialContainer = aSharedContainer.getContainer( m_aInterfaceType );
218 : // Get elements of searched type, if somelse exist.
219 0 : if ( pSpecialContainer != NULL )
220 : {
221 0 : seqReturnConnections = pSpecialContainer->getElements();
222 : }
223 : // Don't forget this!
224 0 : impl_UnlockContainer();
225 :
226 0 : return seqReturnConnections;
227 : }
228 :
229 : //______________________________________________________________________________________________________________
230 : // private method
231 : //______________________________________________________________________________________________________________
232 :
233 0 : sal_Bool OConnectionPointHelper::impl_LockContainer()
234 : {
235 : // Convert weakreference to hard uno3-reference and return state.
236 : // If this reference different from NULL, there exist a hard reference to container. Container-instance can't be destroyed.
237 : // Don't forget to "unlock" this reference!
238 0 : m_xLock = m_oContainerWeakReference.get();
239 0 : return m_xLock.is();
240 : }
241 :
242 : //______________________________________________________________________________________________________________
243 : // private method
244 : //______________________________________________________________________________________________________________
245 :
246 0 : void OConnectionPointHelper::impl_UnlockContainer()
247 : {
248 : // Free hard uno3-reference to container.
249 : // see also "impl_LockContainer()"
250 0 : m_xLock = Reference< XInterface >();
251 0 : }
252 :
253 : } // namespace unocontrols
254 :
255 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
