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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 "cacheupdatelistener.hxx"
#include <com/sun/star/util/XChangesNotifier.hpp>
#include <com/sun/star/util/XRefreshable.hpp>
#include <com/sun/star/document/FilterConfigRefresh.hpp>
#include <unotools/configpaths.hxx>
#include <rtl/ustring.hxx>
#include <comphelper/processfactory.hxx>
namespace filter::config{
CacheUpdateListener::CacheUpdateListener(FilterCache &rFilterCache,
const css::uno::Reference< css::uno::XInterface >& xConfigAccess,
FilterCache::EItemType eConfigType)
: m_rCache(rFilterCache)
, m_xConfig(xConfigAccess)
, m_eConfigType(eConfigType)
{
}
CacheUpdateListener::~CacheUpdateListener()
{
}
void CacheUpdateListener::startListening()
{
// SAFE ->
osl::ClearableMutexGuard aLock(m_aMutex);
css::uno::Reference< css::util::XChangesNotifier > xNotifier(m_xConfig, css::uno::UNO_QUERY);
aLock.clear();
// <- SAFE
if (!xNotifier.is())
return;
css::uno::Reference< css::util::XChangesListener > xThis(this);
xNotifier->addChangesListener(xThis);
}
void CacheUpdateListener::stopListening()
{
// SAFE ->
osl::ClearableMutexGuard aLock(m_aMutex);
css::uno::Reference< css::util::XChangesNotifier > xNotifier(m_xConfig, css::uno::UNO_QUERY);
aLock.clear();
// <- SAFE
if (!xNotifier.is())
return;
css::uno::Reference< css::util::XChangesListener > xThis(this);
xNotifier->removeChangesListener(xThis);
}
void SAL_CALL CacheUpdateListener::changesOccurred(const css::util::ChangesEvent& aEvent)
{
// SAFE ->
osl::ClearableMutexGuard aLock(m_aMutex);
// disposed ?
if ( ! m_xConfig.is())
return;
FilterCache::EItemType eType = m_eConfigType;
aLock.clear();
// <- SAFE
std::vector<OUString> lChangedItems;
sal_Int32 c = aEvent.Changes.getLength();
sal_Int32 i = 0;
for (i=0; i<c; ++i)
{
const css::util::ElementChange& aChange = aEvent.Changes[i];
OUString sOrgPath ;
OUString sTempPath;
OUString sProperty;
OUString sNode ;
OUString sLocale ;
/* at least we must be able to retrieve 2 path elements
But sometimes the original path can contain 3 of them ... in case
a localized value was changed.
=>
1) Filters/Filter["filtername"]/Property
2) Filters/Filter["filtername"]/LocalizedProperty/Locale
*/
aChange.Accessor >>= sOrgPath;
if ( ! ::utl::splitLastFromConfigurationPath(sOrgPath, sTempPath, sLocale))
continue;
sOrgPath = sTempPath;
if ( ! ::utl::splitLastFromConfigurationPath(sOrgPath, sTempPath, sProperty))
{
sNode = sLocale;
sProperty.clear();
sLocale.clear();
}
else
{
sOrgPath = sTempPath;
if ( ! ::utl::splitLastFromConfigurationPath(sOrgPath, sTempPath, sNode))
{
sNode = sProperty;
sProperty = sLocale;
sLocale.clear();
}
}
if ( sNode.isEmpty() )
continue;
auto pIt = ::std::find(lChangedItems.cbegin(), lChangedItems.cend(), sNode);
if (pIt == lChangedItems.cend())
lChangedItems.push_back(sNode);
}
bool bNotifyRefresh = false;
for (auto const& changedItem : lChangedItems)
{
try
{
m_rCache.refreshItem(eType, changedItem);
}
catch(const css::container::NoSuchElementException&)
{
// can be ignored! Because we must be aware that
// sItem was removed from the configuration and we forced an update of the cache.
// But we know, that the cache is up-to-date know and has thrown this exception afterwards .-)
}
// NO FLUSH! Otherwise we start a never ending story here .-)
bNotifyRefresh = true;
}
// notify sfx cache about the changed filter cache .-)
if (bNotifyRefresh)
{
css::uno::Reference< css::uno::XComponentContext > xContext = comphelper::getProcessComponentContext();
css::uno::Reference< css::util::XRefreshable > xRefreshBroadcaster =
css::document::FilterConfigRefresh::create(xContext);
xRefreshBroadcaster->refresh();
}
}
void SAL_CALL CacheUpdateListener::disposing(const css::lang::EventObject& aEvent)
{
// SAFE ->
osl::MutexGuard aLock(m_aMutex);
if (aEvent.Source == m_xConfig)
m_xConfig.clear();
// <- SAFE
}
} // namespace filter::config
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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