1 /**************************************************************
2 *
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 *
20 *************************************************************/
21
22
23
24 // MARKER(update_precomp.py): autogen include statement, do not remove
25 #include "precompiled_comphelper.hxx"
26 #include <comphelper/enumhelper.hxx>
27 #include <com/sun/star/lang/XComponent.hpp>
28
29 //.........................................................................
30 namespace comphelper
31 {
32 //.........................................................................
33
34 //==================================================================
35 //= OEnumerationByName
36 //==================================================================
37 //------------------------------------------------------------------------------
OEnumerationByName(const staruno::Reference<starcontainer::XNameAccess> & _rxAccess)38 OEnumerationByName::OEnumerationByName(const staruno::Reference<starcontainer::XNameAccess>& _rxAccess)
39 :m_aNames(_rxAccess->getElementNames())
40 ,m_nPos(0)
41 ,m_xAccess(_rxAccess)
42 ,m_bListening(sal_False)
43 {
44 impl_startDisposeListening();
45 }
46
47 //------------------------------------------------------------------------------
OEnumerationByName(const staruno::Reference<starcontainer::XNameAccess> & _rxAccess,const staruno::Sequence<::rtl::OUString> & _aNames)48 OEnumerationByName::OEnumerationByName(const staruno::Reference<starcontainer::XNameAccess>& _rxAccess,
49 const staruno::Sequence< ::rtl::OUString >& _aNames )
50 :m_aNames(_aNames)
51 ,m_nPos(0)
52 ,m_xAccess(_rxAccess)
53 ,m_bListening(sal_False)
54 {
55 impl_startDisposeListening();
56 }
57
58 //------------------------------------------------------------------------------
~OEnumerationByName()59 OEnumerationByName::~OEnumerationByName()
60 {
61 impl_stopDisposeListening();
62 }
63
64 //------------------------------------------------------------------------------
hasMoreElements()65 sal_Bool SAL_CALL OEnumerationByName::hasMoreElements( ) throw(staruno::RuntimeException)
66 {
67 ::osl::ResettableMutexGuard aLock(m_aLock);
68
69 if (m_xAccess.is() && m_aNames.getLength() > m_nPos)
70 return sal_True;
71
72 if (m_xAccess.is())
73 {
74 impl_stopDisposeListening();
75 m_xAccess.clear();
76 }
77
78 return sal_False;
79 }
80
81 //------------------------------------------------------------------------------
nextElement()82 staruno::Any SAL_CALL OEnumerationByName::nextElement( )
83 throw(starcontainer::NoSuchElementException, starlang::WrappedTargetException, staruno::RuntimeException)
84 {
85 ::osl::ResettableMutexGuard aLock(m_aLock);
86
87 staruno::Any aRes;
88 if (m_xAccess.is() && m_nPos < m_aNames.getLength())
89 aRes = m_xAccess->getByName(m_aNames.getConstArray()[m_nPos++]);
90
91 if (m_xAccess.is() && m_nPos >= m_aNames.getLength())
92 {
93 impl_stopDisposeListening();
94 m_xAccess.clear();
95 }
96
97 if (!aRes.hasValue()) // es gibt kein Element mehr
98 throw starcontainer::NoSuchElementException();
99
100 return aRes;
101 }
102
103 //------------------------------------------------------------------------------
disposing(const starlang::EventObject & aEvent)104 void SAL_CALL OEnumerationByName::disposing(const starlang::EventObject& aEvent)
105 throw(staruno::RuntimeException)
106 {
107 ::osl::ResettableMutexGuard aLock(m_aLock);
108
109 if (aEvent.Source == m_xAccess)
110 m_xAccess.clear();
111 }
112
113 //------------------------------------------------------------------------------
impl_startDisposeListening()114 void OEnumerationByName::impl_startDisposeListening()
115 {
116 ::osl::ResettableMutexGuard aLock(m_aLock);
117
118 if (m_bListening)
119 return;
120
121 ++m_refCount;
122 staruno::Reference< starlang::XComponent > xDisposable(m_xAccess, staruno::UNO_QUERY);
123 if (xDisposable.is())
124 {
125 xDisposable->addEventListener(this);
126 m_bListening = sal_True;
127 }
128 --m_refCount;
129 }
130
131 //------------------------------------------------------------------------------
impl_stopDisposeListening()132 void OEnumerationByName::impl_stopDisposeListening()
133 {
134 ::osl::ResettableMutexGuard aLock(m_aLock);
135
136 if (!m_bListening)
137 return;
138
139 ++m_refCount;
140 staruno::Reference< starlang::XComponent > xDisposable(m_xAccess, staruno::UNO_QUERY);
141 if (xDisposable.is())
142 {
143 xDisposable->removeEventListener(this);
144 m_bListening = sal_False;
145 }
146 --m_refCount;
147 }
148
149 //==================================================================
150 //= OEnumerationByIndex
151 //==================================================================
152 //------------------------------------------------------------------------------
OEnumerationByIndex(const staruno::Reference<starcontainer::XIndexAccess> & _rxAccess)153 OEnumerationByIndex::OEnumerationByIndex(const staruno::Reference< starcontainer::XIndexAccess >& _rxAccess)
154 :m_nPos(0)
155 ,m_xAccess(_rxAccess)
156 ,m_bListening(sal_False)
157 {
158 impl_startDisposeListening();
159 }
160
161 //------------------------------------------------------------------------------
~OEnumerationByIndex()162 OEnumerationByIndex::~OEnumerationByIndex()
163 {
164 impl_stopDisposeListening();
165 }
166
167 //------------------------------------------------------------------------------
hasMoreElements()168 sal_Bool SAL_CALL OEnumerationByIndex::hasMoreElements( ) throw(staruno::RuntimeException)
169 {
170 ::osl::ResettableMutexGuard aLock(m_aLock);
171
172 if (m_xAccess.is() && m_xAccess->getCount() > m_nPos)
173 return sal_True;
174
175 if (m_xAccess.is())
176 {
177 impl_stopDisposeListening();
178 m_xAccess.clear();
179 }
180
181 return sal_False;
182 }
183
184 //------------------------------------------------------------------------------
nextElement()185 staruno::Any SAL_CALL OEnumerationByIndex::nextElement( )
186 throw(starcontainer::NoSuchElementException, starlang::WrappedTargetException, staruno::RuntimeException)
187 {
188 ::osl::ResettableMutexGuard aLock(m_aLock);
189
190 staruno::Any aRes;
191 if (m_xAccess.is())
192 {
193 aRes = m_xAccess->getByIndex(m_nPos++);
194 if (m_nPos >= m_xAccess->getCount())
195 {
196 impl_stopDisposeListening();
197 m_xAccess.clear();
198 }
199 }
200
201 if (!aRes.hasValue()) // es gibt kein Element mehr
202 throw starcontainer::NoSuchElementException();
203 return aRes;
204 }
205
206 //------------------------------------------------------------------------------
disposing(const starlang::EventObject & aEvent)207 void SAL_CALL OEnumerationByIndex::disposing(const starlang::EventObject& aEvent)
208 throw(staruno::RuntimeException)
209 {
210 ::osl::ResettableMutexGuard aLock(m_aLock);
211
212 if (aEvent.Source == m_xAccess)
213 m_xAccess.clear();
214 }
215
216 //------------------------------------------------------------------------------
impl_startDisposeListening()217 void OEnumerationByIndex::impl_startDisposeListening()
218 {
219 ::osl::ResettableMutexGuard aLock(m_aLock);
220
221 if (m_bListening)
222 return;
223
224 ++m_refCount;
225 staruno::Reference< starlang::XComponent > xDisposable(m_xAccess, staruno::UNO_QUERY);
226 if (xDisposable.is())
227 {
228 xDisposable->addEventListener(this);
229 m_bListening = sal_True;
230 }
231 --m_refCount;
232 }
233
234 //------------------------------------------------------------------------------
impl_stopDisposeListening()235 void OEnumerationByIndex::impl_stopDisposeListening()
236 {
237 ::osl::ResettableMutexGuard aLock(m_aLock);
238
239 if (!m_bListening)
240 return;
241
242 ++m_refCount;
243 staruno::Reference< starlang::XComponent > xDisposable(m_xAccess, staruno::UNO_QUERY);
244 if (xDisposable.is())
245 {
246 xDisposable->removeEventListener(this);
247 m_bListening = sal_False;
248 }
249 --m_refCount;
250 }
251
252 //==================================================================
253 //= OAnyEnumeration
254 //==================================================================
255
256 //------------------------------------------------------------------------------
OAnyEnumeration(const staruno::Sequence<staruno::Any> & lItems)257 OAnyEnumeration::OAnyEnumeration(const staruno::Sequence< staruno::Any >& lItems)
258 :m_nPos(0)
259 ,m_lItems(lItems)
260 {
261 }
262
263 //------------------------------------------------------------------------------
~OAnyEnumeration()264 OAnyEnumeration::~OAnyEnumeration()
265 {
266 }
267
268 //------------------------------------------------------------------------------
hasMoreElements()269 sal_Bool SAL_CALL OAnyEnumeration::hasMoreElements( ) throw(staruno::RuntimeException)
270 {
271 ::osl::ResettableMutexGuard aLock(m_aLock);
272
273 return (m_lItems.getLength() > m_nPos);
274 }
275
276 //------------------------------------------------------------------------------
nextElement()277 staruno::Any SAL_CALL OAnyEnumeration::nextElement( )
278 throw(starcontainer::NoSuchElementException, starlang::WrappedTargetException, staruno::RuntimeException)
279 {
280 if ( ! hasMoreElements())
281 throw starcontainer::NoSuchElementException();
282
283 ::osl::ResettableMutexGuard aLock(m_aLock);
284 sal_Int32 nPos = m_nPos;
285 ++m_nPos;
286 return m_lItems[nPos];
287 }
288
289 //.........................................................................
290 } // namespace comphelper
291 //.........................................................................
292
293
294