summaryrefslogtreecommitdiffstats
path: root/sd/source/ui/framework/configuration/ChangeRequestQueueProcessor.cxx
diff options
context:
space:
mode:
Diffstat (limited to 'sd/source/ui/framework/configuration/ChangeRequestQueueProcessor.cxx')
-rw-r--r--sd/source/ui/framework/configuration/ChangeRequestQueueProcessor.cxx180
1 files changed, 180 insertions, 0 deletions
diff --git a/sd/source/ui/framework/configuration/ChangeRequestQueueProcessor.cxx b/sd/source/ui/framework/configuration/ChangeRequestQueueProcessor.cxx
new file mode 100644
index 000000000..da633a540
--- /dev/null
+++ b/sd/source/ui/framework/configuration/ChangeRequestQueueProcessor.cxx
@@ -0,0 +1,180 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "debugtrace.hxx"
+#include "ChangeRequestQueueProcessor.hxx"
+#include "ConfigurationTracer.hxx"
+
+#include "ConfigurationUpdater.hxx"
+
+#include <vcl/svapp.hxx>
+#include <sal/log.hxx>
+#include <com/sun/star/container/XNamed.hpp>
+#include <com/sun/star/drawing/framework/XConfigurationChangeRequest.hpp>
+
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::uno;
+using namespace ::com::sun::star::drawing::framework;
+
+namespace {
+
+#if DEBUG_SD_CONFIGURATION_TRACE
+
+void TraceRequest (const Reference<XConfigurationChangeRequest>& rxRequest)
+{
+ Reference<container::XNamed> xNamed (rxRequest, UNO_QUERY);
+ if (xNamed.is())
+ SAL_INFO("sd.fwk", __func__ << ": " << xNamed->getName());
+}
+
+#endif
+
+} // end of anonymous namespace
+
+namespace sd::framework {
+
+ChangeRequestQueueProcessor::ChangeRequestQueueProcessor (
+ const std::shared_ptr<ConfigurationUpdater>& rpConfigurationUpdater)
+ : mnUserEventId(nullptr),
+ mpConfigurationUpdater(rpConfigurationUpdater)
+{
+}
+
+ChangeRequestQueueProcessor::~ChangeRequestQueueProcessor()
+{
+ if (mnUserEventId != nullptr)
+ Application::RemoveUserEvent(mnUserEventId);
+}
+
+void ChangeRequestQueueProcessor::SetConfiguration (
+ const Reference<XConfiguration>& rxConfiguration)
+{
+ ::osl::MutexGuard aGuard (maMutex);
+
+ mxConfiguration = rxConfiguration;
+ StartProcessing();
+}
+
+void ChangeRequestQueueProcessor::AddRequest (
+ const Reference<XConfigurationChangeRequest>& rxRequest)
+{
+ ::osl::MutexGuard aGuard (maMutex);
+
+#if DEBUG_SD_CONFIGURATION_TRACE
+ if (maQueue.empty())
+ {
+ SAL_INFO("sd.fwk", __func__ << ": Adding requests to empty queue");
+ ConfigurationTracer::TraceConfiguration(
+ mxConfiguration, "current configuration of queue processor");
+ }
+ SAL_INFO("sd.fwk", __func__ << ": Adding request");
+ TraceRequest(rxRequest);
+#endif
+
+ maQueue.push(rxRequest);
+ StartProcessing();
+}
+
+void ChangeRequestQueueProcessor::StartProcessing()
+{
+ ::osl::MutexGuard aGuard (maMutex);
+
+ if (mnUserEventId == nullptr
+ && mxConfiguration.is()
+ && ! maQueue.empty())
+ {
+ SAL_INFO("sd.fwk", __func__ << ": ChangeRequestQueueProcessor scheduling processing");
+ mnUserEventId = Application::PostUserEvent(
+ LINK(this,ChangeRequestQueueProcessor,ProcessEvent));
+ }
+}
+
+IMPL_LINK_NOARG(ChangeRequestQueueProcessor, ProcessEvent, void*, void)
+{
+ ::osl::MutexGuard aGuard (maMutex);
+
+ mnUserEventId = nullptr;
+
+ ProcessOneEvent();
+
+ if ( ! maQueue.empty())
+ {
+ // Schedule the processing of the next event.
+ StartProcessing();
+ }
+}
+
+void ChangeRequestQueueProcessor::ProcessOneEvent()
+{
+ ::osl::MutexGuard aGuard (maMutex);
+
+ SAL_INFO("sd.fwk", __func__ << ": ProcessOneEvent");
+
+ if (!mxConfiguration.is() || maQueue.empty())
+ return;
+
+ // Get and remove the first entry from the queue.
+ Reference<XConfigurationChangeRequest> xRequest (maQueue.front());
+ maQueue.pop();
+
+ // Execute the change request.
+ if (xRequest.is())
+ {
+#if DEBUG_SD_CONFIGURATION_TRACE
+ TraceRequest(xRequest);
+#endif
+ xRequest->execute(mxConfiguration);
+ }
+
+ if (!maQueue.empty())
+ return;
+
+ SAL_INFO("sd.fwk", __func__ << ": All requests are processed");
+ // The queue is empty so tell the ConfigurationManager to update
+ // its state.
+ if (mpConfigurationUpdater != nullptr)
+ {
+#if DEBUG_SD_CONFIGURATION_TRACE
+ ConfigurationTracer::TraceConfiguration (
+ mxConfiguration, "updating to configuration");
+#endif
+ mpConfigurationUpdater->RequestUpdate(mxConfiguration);
+ }
+}
+
+bool ChangeRequestQueueProcessor::IsEmpty() const
+{
+ return maQueue.empty();
+}
+
+void ChangeRequestQueueProcessor::ProcessUntilEmpty()
+{
+ while ( ! IsEmpty())
+ ProcessOneEvent();
+}
+
+void ChangeRequestQueueProcessor::Clear()
+{
+ ::osl::MutexGuard aGuard (maMutex);
+ ChangeRequestQueue().swap(maQueue);
+}
+
+} // end of namespace sd::framework
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */