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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 "ChangeRequestQueueProcessor.hxx"
21 : #include "ConfigurationTracer.hxx"
22 :
23 : #include "framework/ConfigurationController.hxx"
24 : #include "ConfigurationUpdater.hxx"
25 :
26 : #include <vcl/svapp.hxx>
27 : #include <com/sun/star/container/XNamed.hpp>
28 : #include <com/sun/star/drawing/framework/XConfiguration.hpp>
29 : #include <com/sun/star/drawing/framework/ConfigurationChangeEvent.hpp>
30 :
31 : using namespace ::com::sun::star;
32 : using namespace ::com::sun::star::uno;
33 : using namespace ::com::sun::star::drawing::framework;
34 :
35 : namespace {
36 :
37 : #if OSL_DEBUG_LEVEL >= 2
38 :
39 : void TraceRequest (const Reference<XConfigurationChangeRequest>& rxRequest)
40 : {
41 : Reference<container::XNamed> xNamed (rxRequest, UNO_QUERY);
42 : if (xNamed.is())
43 : SAL_INFO("sd.fwk", OSL_THIS_FUNC << ": " <<
44 : OUStringToOString(xNamed->getName(), RTL_TEXTENCODING_UTF8).getStr());
45 : }
46 :
47 : #endif
48 :
49 : } // end of anonymous namespace
50 :
51 : namespace sd { namespace framework {
52 :
53 127 : ChangeRequestQueueProcessor::ChangeRequestQueueProcessor (
54 : const ::rtl::Reference<ConfigurationController>& rpConfigurationController,
55 : const ::boost::shared_ptr<ConfigurationUpdater>& rpConfigurationUpdater)
56 : : maMutex(),
57 : maQueue(),
58 : mnUserEventId(0),
59 : mxConfiguration(),
60 : mpConfigurationController(rpConfigurationController),
61 127 : mpConfigurationUpdater(rpConfigurationUpdater)
62 : {
63 127 : }
64 :
65 254 : ChangeRequestQueueProcessor::~ChangeRequestQueueProcessor()
66 : {
67 127 : if (mnUserEventId != 0)
68 127 : Application::RemoveUserEvent(mnUserEventId);
69 127 : }
70 :
71 127 : void ChangeRequestQueueProcessor::SetConfiguration (
72 : const Reference<XConfiguration>& rxConfiguration)
73 : {
74 127 : ::osl::MutexGuard aGuard (maMutex);
75 :
76 127 : mxConfiguration = rxConfiguration;
77 127 : StartProcessing();
78 127 : }
79 :
80 1971 : void ChangeRequestQueueProcessor::AddRequest (
81 : const Reference<XConfigurationChangeRequest>& rxRequest)
82 : {
83 1971 : ::osl::MutexGuard aGuard (maMutex);
84 :
85 : #if OSL_DEBUG_LEVEL >= 2
86 : if (maQueue.empty())
87 : {
88 : SAL_INFO("sd.fwk", OSL_THIS_FUNC << ": Adding requests to empty queue");
89 : ConfigurationTracer::TraceConfiguration(
90 : mxConfiguration, "current configuration of queue processor");
91 : }
92 : SAL_INFO("sd.fwk", OSL_THIS_FUNC << ": Adding request");
93 : TraceRequest(rxRequest);
94 : #endif
95 :
96 1971 : maQueue.push_back(rxRequest);
97 1971 : StartProcessing();
98 1971 : }
99 :
100 2171 : void ChangeRequestQueueProcessor::StartProcessing()
101 : {
102 2171 : ::osl::MutexGuard aGuard (maMutex);
103 :
104 4342 : if (mnUserEventId == 0
105 420 : && mxConfiguration.is()
106 2591 : && ! maQueue.empty())
107 : {
108 : SAL_INFO("sd.fwk", OSL_THIS_FUNC << ": ChangeRequestQueueProcessor scheduling processing");
109 : mnUserEventId = Application::PostUserEvent(
110 293 : LINK(this,ChangeRequestQueueProcessor,ProcessEvent));
111 2171 : }
112 2171 : }
113 :
114 332 : IMPL_LINK_NOARG(ChangeRequestQueueProcessor, ProcessEvent)
115 : {
116 166 : ::osl::MutexGuard aGuard (maMutex);
117 :
118 166 : mnUserEventId = 0;
119 :
120 166 : ProcessOneEvent();
121 :
122 166 : if ( ! maQueue.empty())
123 : {
124 : // Schedule the processing of the next event.
125 73 : StartProcessing();
126 : }
127 :
128 166 : return 0;
129 : }
130 :
131 1849 : void ChangeRequestQueueProcessor::ProcessOneEvent()
132 : {
133 1849 : ::osl::MutexGuard aGuard (maMutex);
134 :
135 : SAL_INFO("sd.fwk", OSL_THIS_FUNC << ": ProcessOneEvent");
136 :
137 3698 : if (mxConfiguration.is()
138 1849 : && ! maQueue.empty())
139 : {
140 : // Get and remove the first entry from the queue.
141 1849 : Reference<XConfigurationChangeRequest> xRequest (maQueue.front());
142 1849 : maQueue.pop_front();
143 :
144 : // Execute the change request.
145 1849 : if (xRequest.is())
146 : {
147 : #if OSL_DEBUG_LEVEL >= 2
148 : TraceRequest(xRequest);
149 : #endif
150 1849 : xRequest->execute(mxConfiguration);
151 : }
152 :
153 1849 : if (maQueue.empty())
154 : {
155 : SAL_INFO("sd.fwk", OSL_THIS_FUNC << ": All requests are processed");
156 : // The queue is empty so tell the ConfigurationManager to update
157 : // its state.
158 408 : if (mpConfigurationUpdater.get() != NULL)
159 : {
160 : #if OSL_DEBUG_LEVEL >= 2
161 : ConfigurationTracer::TraceConfiguration (
162 : mxConfiguration, "updating to configuration");
163 : #endif
164 408 : mpConfigurationUpdater->RequestUpdate(mxConfiguration);
165 : }
166 1849 : }
167 1849 : }
168 1849 : }
169 :
170 2079 : bool ChangeRequestQueueProcessor::IsEmpty() const
171 : {
172 2079 : return maQueue.empty();
173 : }
174 :
175 133 : void ChangeRequestQueueProcessor::ProcessUntilEmpty()
176 : {
177 1319 : while ( ! IsEmpty())
178 1053 : ProcessOneEvent();
179 133 : }
180 :
181 127 : void ChangeRequestQueueProcessor::Clear()
182 : {
183 127 : ::osl::MutexGuard aGuard (maMutex);
184 127 : maQueue.clear();
185 127 : }
186 :
187 : } } // end of namespace sd::framework::configuration
188 :
189 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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