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