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