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/* -*- 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 <osl/diagnose.h>
#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", OSL_THIS_FUNC << ": " << xNamed->getName());
}
#endif
} // end of anonymous namespace
namespace sd::framework {
ChangeRequestQueueProcessor::ChangeRequestQueueProcessor (
const std::shared_ptr<ConfigurationUpdater>& rpConfigurationUpdater)
: maMutex(),
maQueue(),
mnUserEventId(nullptr),
mxConfiguration(),
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", OSL_THIS_FUNC << ": Adding requests to empty queue");
ConfigurationTracer::TraceConfiguration(
mxConfiguration, "current configuration of queue processor");
}
SAL_INFO("sd.fwk", OSL_THIS_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", OSL_THIS_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", OSL_THIS_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", OSL_THIS_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 aEmpty;
maQueue.swap(aEmpty);
}
} // end of namespace sd::framework::configuration
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
