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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/.
*/
#ifndef INCLUDED_COMPHELPER_CONFIGURATIONLISTENER_HXX
#define INCLUDED_COMPHELPER_CONFIGURATIONLISTENER_HXX
#include <vector>
#include <comphelper/comphelperdllapi.h>
#include <com/sun/star/beans/XPropertySet.hpp>
#include <com/sun/star/beans/XPropertyChangeListener.hpp>
#include <rtl/ref.hxx>
#include <cppuhelper/implbase.hxx>
#include <comphelper/processfactory.hxx>
#include <comphelper/configurationhelper.hxx>
namespace com::sun::star::beans { struct PropertyChangeEvent; }
namespace com::sun::star::uno { class XComponentContext; }
namespace comphelper {
class ConfigurationListener;
class COMPHELPER_DLLPUBLIC ConfigurationListenerPropertyBase {
public:
OUString maName;
rtl::Reference<ConfigurationListener> mxListener;
virtual ~ConfigurationListenerPropertyBase() {}
virtual void setProperty(const css::uno::Any &aProperty) = 0;
void dispose() { mxListener.clear(); }
};
/// Access to this class must be protected by the SolarMutex
template< typename uno_type > class ConfigurationListenerProperty : public ConfigurationListenerPropertyBase
{
uno_type maValue;
protected:
virtual void setProperty(const css::uno::Any &aProperty) override
{
aProperty >>= maValue;
}
public:
/**
* Provide a mirror of the configmgr's version of this property
* for the lifecycle of this property. The property value tracks
* the same value in the configuration.
*/
inline ConfigurationListenerProperty(const rtl::Reference< ConfigurationListener > &xListener,
const OUString &rProp );
virtual inline ~ConfigurationListenerProperty() override;
uno_type get() const { return maValue; }
};
// workaround for incremental linking bugs in MSVC2019
class SAL_DLLPUBLIC_TEMPLATE ConfigurationListener_Base : public cppu::WeakImplHelper< css::beans::XPropertyChangeListener > {};
class COMPHELPER_DLLPUBLIC ConfigurationListener final : public ConfigurationListener_Base
{
css::uno::Reference< css::beans::XPropertySet > mxConfig;
std::vector< ConfigurationListenerPropertyBase * > maListeners;
bool mbDisposed;
public:
/// Public health warning, you -must- dispose this if you use it.
ConfigurationListener(const OUString &rPath,
css::uno::Reference< css::uno::XComponentContext >
const & xContext = comphelper::getProcessComponentContext())
: mxConfig( ConfigurationHelper::openConfig( xContext, rPath, EConfigurationModes::ReadOnly ),
css::uno::UNO_QUERY_THROW )
, mbDisposed(false)
{ }
virtual ~ConfigurationListener() override
{
dispose();
}
/// Listen for the specific property denoted by the listener
void addListener(ConfigurationListenerPropertyBase *pListener);
/// Stop listening.
void removeListener(ConfigurationListenerPropertyBase *pListener);
/// Release various circular references
void dispose();
// XPropertyChangeListener implementation
virtual void SAL_CALL disposing(css::lang::EventObject const &) override;
/// Notify of the property change
virtual void SAL_CALL propertyChange(
css::beans::PropertyChangeEvent const &rEvt ) override;
bool isDisposed() const { return mbDisposed; }
};
template< typename uno_type > ConfigurationListenerProperty< uno_type >::ConfigurationListenerProperty(const rtl::Reference< ConfigurationListener > &xListener, const OUString &rProp )
: maValue()
{
maName = rProp;
mxListener = xListener;
mxListener->addListener(this);
}
template< typename uno_type > ConfigurationListenerProperty< uno_type >::~ConfigurationListenerProperty()
{
if (mxListener.is())
mxListener->removeListener(this);
}
} // namespace comphelper
#endif // INCLUDED_COMPHELPER_CONFIGURATIONLISTENER_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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