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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 "constant.hxx"
#include <com/sun/star/util/XChangesNotifier.hpp>
#include <com/sun/star/util/XRefreshable.hpp>
#include <salhelper/singletonref.hxx>
#include <unotools/configpaths.hxx>
#include <rtl/ustring.hxx>
namespace filter{
namespace config{
CacheUpdateListener::CacheUpdateListener(const css::uno::Reference< css::lang::XMultiServiceFactory >& xSMGR,
FilterCache &rFilterCache,
const css::uno::Reference< css::uno::XInterface >& xConfigAccess,
FilterCache::EItemType eConfigType)
: BaseLock()
, m_xSMGR(xSMGR)
, m_rCache(rFilterCache)
, m_xConfig(xConfigAccess)
, m_eConfigType(eConfigType)
{
}
CacheUpdateListener::~CacheUpdateListener()
{
}
void CacheUpdateListener::startListening()
{
// SAFE ->
::osl::ResettableMutexGuard aLock(m_aLock);
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(static_cast< css::util::XChangesListener* >(this), css::uno::UNO_QUERY_THROW);
xNotifier->addChangesListener(xThis);
}
void CacheUpdateListener::stopListening()
{
// SAFE ->
::osl::ResettableMutexGuard aLock(m_aLock);
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(static_cast< css::util::XChangesListener* >(this), css::uno::UNO_QUERY);
xNotifier->removeChangesListener(xThis);
}
void SAL_CALL CacheUpdateListener::changesOccurred(const css::util::ChangesEvent& aEvent)
throw(css::uno::RuntimeException)
{
// SAFE ->
::osl::ResettableMutexGuard aLock(m_aLock);
// disposed ?
if ( ! m_xConfig.is())
return;
css::uno::Reference< css::lang::XMultiServiceFactory > xSMGR = m_xSMGR;
FilterCache::EItemType eType = m_eConfigType;
aLock.clear();
// <- SAFE
OUStringList 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];
::rtl::OUString sOrgPath ;
::rtl::OUString sTempPath;
::rtl::OUString sProperty;
::rtl::OUString sNode ;
::rtl::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 = ::rtl::OUString();
sLocale = ::rtl::OUString();
}
else
{
sOrgPath = sTempPath;
if ( ! ::utl::splitLastFromConfigurationPath(sOrgPath, sTempPath, sNode))
{
sNode = sProperty;
sProperty = sLocale;
sLocale = ::rtl::OUString();
}
}
if ( sNode.isEmpty() )
continue;
OUStringList::const_iterator pIt = ::std::find(lChangedItems.begin(), lChangedItems.end(), sNode);
if (pIt == lChangedItems.end())
lChangedItems.push_back(sNode);
}
sal_Bool bNotifyRefresh = sal_False;
OUStringList::const_iterator pIt;
for ( pIt = lChangedItems.begin();
pIt != lChangedItems.end() ;
++pIt )
{
const ::rtl::OUString& sItem = *pIt;
try
{
m_rCache.refreshItem(eType, sItem);
}
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 = sal_True;
}
// notify sfx cache about the changed filter cache .-)
if (bNotifyRefresh)
{
css::uno::Reference< css::util::XRefreshable > xRefreshBroadcaster(
xSMGR->createInstance(SERVICE_FILTERCONFIGREFRESH),
css::uno::UNO_QUERY);
if (xRefreshBroadcaster.is())
xRefreshBroadcaster->refresh();
}
}
void SAL_CALL CacheUpdateListener::disposing(const css::lang::EventObject& aEvent)
throw(css::uno::RuntimeException)
{
// SAFE ->
::osl::ResettableMutexGuard aLock(m_aLock);
if (aEvent.Source == m_xConfig)
m_xConfig.clear();
aLock.clear();
// <- SAFE
}
} // namespace config
} // namespace filter
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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