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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 "ChangeRequestQueueProcessor.hxx"
22 : #include "ConfigurationTracer.hxx"
23 :
24 : #include "framework/ConfigurationController.hxx"
25 : #include "ConfigurationUpdater.hxx"
26 :
27 : #include <vcl/svapp.hxx>
28 : #include <com/sun/star/container/XNamed.hpp>
29 : #include <com/sun/star/drawing/framework/XConfiguration.hpp>
30 : #include <com/sun/star/drawing/framework/ConfigurationChangeEvent.hpp>
31 :
32 : using namespace ::com::sun::star;
33 : using namespace ::com::sun::star::uno;
34 : using namespace ::com::sun::star::drawing::framework;
35 :
36 : namespace {
37 :
38 : #if OSL_DEBUG_LEVEL >= 2
39 :
40 : void TraceRequest (const Reference<XConfigurationChangeRequest>& rxRequest)
41 : {
42 : Reference<container::XNamed> xNamed (rxRequest, UNO_QUERY);
43 : if (xNamed.is())
44 : SAL_INFO("sd.fwk", OSL_THIS_FUNC << ": " <<
45 : OUStringToOString(xNamed->getName(), RTL_TEXTENCODING_UTF8).getStr());
46 : }
47 :
48 : #endif
49 :
50 : } // end of anonymous namespace
51 :
52 :
53 : namespace sd { namespace framework {
54 :
55 0 : ChangeRequestQueueProcessor::ChangeRequestQueueProcessor (
56 : const ::rtl::Reference<ConfigurationController>& rpConfigurationController,
57 : const ::boost::shared_ptr<ConfigurationUpdater>& rpConfigurationUpdater)
58 : : maMutex(),
59 : maQueue(),
60 : mnUserEventId(0),
61 : mxConfiguration(),
62 : mpConfigurationController(rpConfigurationController),
63 0 : mpConfigurationUpdater(rpConfigurationUpdater)
64 : {
65 0 : }
66 :
67 :
68 :
69 :
70 0 : ChangeRequestQueueProcessor::~ChangeRequestQueueProcessor (void)
71 : {
72 0 : if (mnUserEventId != 0)
73 0 : Application::RemoveUserEvent(mnUserEventId);
74 0 : }
75 :
76 :
77 :
78 :
79 0 : void ChangeRequestQueueProcessor::SetConfiguration (
80 : const Reference<XConfiguration>& rxConfiguration)
81 : {
82 0 : ::osl::MutexGuard aGuard (maMutex);
83 :
84 0 : mxConfiguration = rxConfiguration;
85 0 : StartProcessing();
86 0 : }
87 :
88 :
89 :
90 :
91 0 : void ChangeRequestQueueProcessor::AddRequest (
92 : const Reference<XConfigurationChangeRequest>& rxRequest)
93 : {
94 0 : ::osl::MutexGuard aGuard (maMutex);
95 :
96 : #if OSL_DEBUG_LEVEL >= 2
97 : if (maQueue.empty())
98 : {
99 : SAL_INFO("sd.fwk", OSL_THIS_FUNC << ": Adding requests to empty queue");
100 : ConfigurationTracer::TraceConfiguration(
101 : mxConfiguration, "current configuration of queue processor");
102 : }
103 : SAL_INFO("sd.fwk", OSL_THIS_FUNC << ": Adding request");
104 : TraceRequest(rxRequest);
105 : #endif
106 :
107 0 : maQueue.push_back(rxRequest);
108 0 : StartProcessing();
109 0 : }
110 :
111 :
112 :
113 :
114 0 : void ChangeRequestQueueProcessor::StartProcessing (void)
115 : {
116 0 : ::osl::MutexGuard aGuard (maMutex);
117 :
118 0 : if (mnUserEventId == 0
119 0 : && mxConfiguration.is()
120 0 : && ! maQueue.empty())
121 : {
122 : SAL_INFO("sd.fwk", OSL_THIS_FUNC << ": ChangeRequestQueueProcessor scheduling processing");
123 : mnUserEventId = Application::PostUserEvent(
124 0 : LINK(this,ChangeRequestQueueProcessor,ProcessEvent));
125 0 : }
126 0 : }
127 :
128 :
129 :
130 :
131 0 : IMPL_LINK(ChangeRequestQueueProcessor, ProcessEvent, void*, pUnused)
132 : {
133 : (void)pUnused;
134 :
135 0 : ::osl::MutexGuard aGuard (maMutex);
136 :
137 0 : mnUserEventId = 0;
138 :
139 0 : ProcessOneEvent();
140 :
141 0 : if ( ! maQueue.empty())
142 : {
143 : // Schedule the processing of the next event.
144 0 : StartProcessing();
145 : }
146 :
147 0 : return 0;
148 : }
149 :
150 :
151 :
152 :
153 0 : void ChangeRequestQueueProcessor::ProcessOneEvent (void)
154 : {
155 0 : ::osl::MutexGuard aGuard (maMutex);
156 :
157 : SAL_INFO("sd.fwk", OSL_THIS_FUNC << ": ProcessOneEvent");
158 :
159 0 : if (mxConfiguration.is()
160 0 : && ! maQueue.empty())
161 : {
162 : // Get and remove the first entry from the queue.
163 0 : Reference<XConfigurationChangeRequest> xRequest (maQueue.front());
164 0 : maQueue.pop_front();
165 :
166 : // Execute the change request.
167 0 : if (xRequest.is())
168 : {
169 : #if OSL_DEBUG_LEVEL >= 2
170 : TraceRequest(xRequest);
171 : #endif
172 0 : xRequest->execute(mxConfiguration);
173 : }
174 :
175 0 : if (maQueue.empty())
176 : {
177 : SAL_INFO("sd.fwk", OSL_THIS_FUNC << ": All requests are processed");
178 : // The queue is empty so tell the ConfigurationManager to update
179 : // its state.
180 0 : if (mpConfigurationUpdater.get() != NULL)
181 : {
182 : #if OSL_DEBUG_LEVEL >= 2
183 : ConfigurationTracer::TraceConfiguration (
184 : mxConfiguration, "updating to configuration");
185 : #endif
186 0 : mpConfigurationUpdater->RequestUpdate(mxConfiguration);
187 : }
188 0 : }
189 0 : }
190 0 : }
191 :
192 :
193 :
194 :
195 0 : bool ChangeRequestQueueProcessor::IsEmpty (void) const
196 : {
197 0 : return maQueue.empty();
198 : }
199 :
200 :
201 :
202 :
203 0 : void ChangeRequestQueueProcessor::ProcessUntilEmpty (void)
204 : {
205 0 : while ( ! IsEmpty())
206 0 : ProcessOneEvent();
207 0 : }
208 :
209 :
210 :
211 :
212 0 : void ChangeRequestQueueProcessor::Clear (void)
213 : {
214 0 : ::osl::MutexGuard aGuard (maMutex);
215 0 : maQueue.clear();
216 0 : }
217 :
218 :
219 : } } // end of namespace sd::framework::configuration
220 :
221 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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