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