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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 :
53 212 : 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),
61 212 : mpConfigurationUpdater(rpConfigurationUpdater)
62 : {
63 212 : }
64 :
65 424 : ChangeRequestQueueProcessor::~ChangeRequestQueueProcessor (void)
66 : {
67 212 : if (mnUserEventId != 0)
68 212 : Application::RemoveUserEvent(mnUserEventId);
69 212 : }
70 :
71 212 : void ChangeRequestQueueProcessor::SetConfiguration (
72 : const Reference<XConfiguration>& rxConfiguration)
73 : {
74 212 : ::osl::MutexGuard aGuard (maMutex);
75 :
76 212 : mxConfiguration = rxConfiguration;
77 212 : StartProcessing();
78 212 : }
79 :
80 3050 : void ChangeRequestQueueProcessor::AddRequest (
81 : const Reference<XConfigurationChangeRequest>& rxRequest)
82 : {
83 3050 : ::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 3050 : maQueue.push_back(rxRequest);
97 3050 : StartProcessing();
98 3050 : }
99 :
100 3424 : void ChangeRequestQueueProcessor::StartProcessing (void)
101 : {
102 3424 : ::osl::MutexGuard aGuard (maMutex);
103 :
104 6848 : if (mnUserEventId == 0
105 736 : && mxConfiguration.is()
106 4160 : && ! maQueue.empty())
107 : {
108 : SAL_INFO("sd.fwk", OSL_THIS_FUNC << ": ChangeRequestQueueProcessor scheduling processing");
109 : mnUserEventId = Application::PostUserEvent(
110 524 : LINK(this,ChangeRequestQueueProcessor,ProcessEvent));
111 3424 : }
112 3424 : }
113 :
114 624 : IMPL_LINK(ChangeRequestQueueProcessor, ProcessEvent, void*, pUnused)
115 : {
116 : (void)pUnused;
117 :
118 312 : ::osl::MutexGuard aGuard (maMutex);
119 :
120 312 : mnUserEventId = 0;
121 :
122 312 : ProcessOneEvent();
123 :
124 312 : if ( ! maQueue.empty())
125 : {
126 : // Schedule the processing of the next event.
127 162 : StartProcessing();
128 : }
129 :
130 312 : return 0;
131 : }
132 :
133 2900 : void ChangeRequestQueueProcessor::ProcessOneEvent (void)
134 : {
135 2900 : ::osl::MutexGuard aGuard (maMutex);
136 :
137 : SAL_INFO("sd.fwk", OSL_THIS_FUNC << ": ProcessOneEvent");
138 :
139 5800 : if (mxConfiguration.is()
140 2900 : && ! maQueue.empty())
141 : {
142 : // Get and remove the first entry from the queue.
143 2900 : Reference<XConfigurationChangeRequest> xRequest (maQueue.front());
144 2900 : maQueue.pop_front();
145 :
146 : // Execute the change request.
147 2900 : if (xRequest.is())
148 : {
149 : #if OSL_DEBUG_LEVEL >= 2
150 : TraceRequest(xRequest);
151 : #endif
152 2900 : xRequest->execute(mxConfiguration);
153 : }
154 :
155 2900 : if (maQueue.empty())
156 : {
157 : SAL_INFO("sd.fwk", OSL_THIS_FUNC << ": All requests are processed");
158 : // The queue is empty so tell the ConfigurationManager to update
159 : // its state.
160 688 : if (mpConfigurationUpdater.get() != NULL)
161 : {
162 : #if OSL_DEBUG_LEVEL >= 2
163 : ConfigurationTracer::TraceConfiguration (
164 : mxConfiguration, "updating to configuration");
165 : #endif
166 688 : mpConfigurationUpdater->RequestUpdate(mxConfiguration);
167 : }
168 2900 : }
169 2900 : }
170 2900 : }
171 :
172 3264 : bool ChangeRequestQueueProcessor::IsEmpty (void) const
173 : {
174 3264 : return maQueue.empty();
175 : }
176 :
177 212 : void ChangeRequestQueueProcessor::ProcessUntilEmpty (void)
178 : {
179 2008 : while ( ! IsEmpty())
180 1584 : ProcessOneEvent();
181 212 : }
182 :
183 212 : void ChangeRequestQueueProcessor::Clear (void)
184 : {
185 212 : ::osl::MutexGuard aGuard (maMutex);
186 212 : maQueue.clear();
187 212 : }
188 :
189 114 : } } // end of namespace sd::framework::configuration
190 :
191 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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