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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 :
21 : #include "cacheupdatelistener.hxx"
22 : #include "constant.hxx"
23 :
24 : #include <com/sun/star/util/XChangesNotifier.hpp>
25 : #include <com/sun/star/util/XRefreshable.hpp>
26 : #include <com/sun/star/document/FilterConfigRefresh.hpp>
27 : #include <salhelper/singletonref.hxx>
28 : #include <unotools/configpaths.hxx>
29 : #include <rtl/ustring.hxx>
30 : #include <comphelper/processfactory.hxx>
31 :
32 :
33 : namespace filter{
34 : namespace config{
35 :
36 149 : CacheUpdateListener::CacheUpdateListener(FilterCache &rFilterCache,
37 : const css::uno::Reference< css::uno::XInterface >& xConfigAccess,
38 : FilterCache::EItemType eConfigType)
39 : : BaseLock()
40 : , m_rCache(rFilterCache)
41 : , m_xConfig(xConfigAccess)
42 149 : , m_eConfigType(eConfigType)
43 : {
44 149 : }
45 :
46 298 : CacheUpdateListener::~CacheUpdateListener()
47 : {
48 298 : }
49 :
50 149 : void CacheUpdateListener::startListening()
51 : {
52 : // SAFE ->
53 149 : ::osl::ResettableMutexGuard aLock(m_aLock);
54 298 : css::uno::Reference< css::util::XChangesNotifier > xNotifier(m_xConfig, css::uno::UNO_QUERY);
55 149 : aLock.clear();
56 : // <- SAFE
57 :
58 149 : if (!xNotifier.is())
59 149 : return;
60 :
61 298 : css::uno::Reference< css::util::XChangesListener > xThis(static_cast< css::util::XChangesListener* >(this), css::uno::UNO_QUERY_THROW);
62 298 : xNotifier->addChangesListener(xThis);
63 : }
64 :
65 :
66 :
67 149 : void CacheUpdateListener::stopListening()
68 : {
69 : // SAFE ->
70 149 : ::osl::ResettableMutexGuard aLock(m_aLock);
71 298 : css::uno::Reference< css::util::XChangesNotifier > xNotifier(m_xConfig, css::uno::UNO_QUERY);
72 149 : aLock.clear();
73 : // <- SAFE
74 :
75 149 : if (!xNotifier.is())
76 149 : return;
77 :
78 298 : css::uno::Reference< css::util::XChangesListener > xThis(static_cast< css::util::XChangesListener* >(this), css::uno::UNO_QUERY);
79 298 : xNotifier->removeChangesListener(xThis);
80 : }
81 :
82 :
83 :
84 0 : void SAL_CALL CacheUpdateListener::changesOccurred(const css::util::ChangesEvent& aEvent)
85 : throw(css::uno::RuntimeException, std::exception)
86 : {
87 : // SAFE ->
88 0 : ::osl::ResettableMutexGuard aLock(m_aLock);
89 :
90 : // disposed ?
91 0 : if ( ! m_xConfig.is())
92 0 : return;
93 :
94 0 : FilterCache::EItemType eType = m_eConfigType;
95 :
96 0 : aLock.clear();
97 : // <- SAFE
98 :
99 0 : OUStringList lChangedItems;
100 0 : sal_Int32 c = aEvent.Changes.getLength();
101 0 : sal_Int32 i = 0;
102 :
103 0 : for (i=0; i<c; ++i)
104 : {
105 0 : const css::util::ElementChange& aChange = aEvent.Changes[i];
106 :
107 0 : OUString sOrgPath ;
108 0 : OUString sTempPath;
109 :
110 0 : OUString sProperty;
111 0 : OUString sNode ;
112 0 : OUString sLocale ;
113 :
114 : /* at least we must be able to retrieve 2 path elements
115 : But sometimes the original path can contain 3 of them ... in case
116 : a localized value was changed.
117 : =>
118 : 1) Filters/Filter["filtername"]/Property
119 : 2) Filters/Filter["filtername"]/LocalizedProperty/Locale
120 : */
121 :
122 0 : aChange.Accessor >>= sOrgPath;
123 0 : if ( ! ::utl::splitLastFromConfigurationPath(sOrgPath, sTempPath, sLocale))
124 0 : continue;
125 0 : sOrgPath = sTempPath;
126 0 : if ( ! ::utl::splitLastFromConfigurationPath(sOrgPath, sTempPath, sProperty))
127 : {
128 0 : sNode = sLocale;
129 0 : sProperty = OUString();
130 0 : sLocale = OUString();
131 : }
132 : else
133 : {
134 0 : sOrgPath = sTempPath;
135 0 : if ( ! ::utl::splitLastFromConfigurationPath(sOrgPath, sTempPath, sNode))
136 : {
137 0 : sNode = sProperty;
138 0 : sProperty = sLocale;
139 0 : sLocale = OUString();
140 : }
141 : }
142 :
143 0 : if ( sNode.isEmpty() )
144 0 : continue;
145 :
146 0 : OUStringList::const_iterator pIt = ::std::find(lChangedItems.begin(), lChangedItems.end(), sNode);
147 0 : if (pIt == lChangedItems.end())
148 0 : lChangedItems.push_back(sNode);
149 0 : }
150 :
151 0 : sal_Bool bNotifyRefresh = sal_False;
152 0 : OUStringList::const_iterator pIt;
153 0 : for ( pIt = lChangedItems.begin();
154 0 : pIt != lChangedItems.end() ;
155 : ++pIt )
156 : {
157 0 : const OUString& sItem = *pIt;
158 : try
159 : {
160 0 : m_rCache.refreshItem(eType, sItem);
161 : }
162 0 : catch(const css::container::NoSuchElementException&)
163 : {
164 : // can be ignored! Because we must be aware that
165 : // sItem was removed from the configuration and we forced an update of the cache.
166 : // But we know, that the cache is up-to-date know and has thrown this exception afterwards .-)
167 : }
168 : // NO FLUSH! Otherwise we start a never ending story here .-)
169 0 : bNotifyRefresh = sal_True;
170 : }
171 :
172 : // notify sfx cache about the changed filter cache .-)
173 0 : if (bNotifyRefresh)
174 : {
175 0 : css::uno::Reference< css::uno::XComponentContext > xContext = comphelper::getProcessComponentContext();
176 : css::uno::Reference< css::util::XRefreshable > xRefreshBroadcaster =
177 0 : css::document::FilterConfigRefresh::create(xContext);
178 0 : xRefreshBroadcaster->refresh();
179 0 : }
180 : }
181 :
182 :
183 :
184 0 : void SAL_CALL CacheUpdateListener::disposing(const css::lang::EventObject& aEvent)
185 : throw(css::uno::RuntimeException, std::exception)
186 : {
187 : // SAFE ->
188 0 : ::osl::ResettableMutexGuard aLock(m_aLock);
189 0 : if (aEvent.Source == m_xConfig)
190 0 : m_xConfig.clear();
191 0 : aLock.clear();
192 : // <- SAFE
193 0 : }
194 :
195 : } // namespace config
196 : } // namespace filter
197 :
198 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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