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/* This file is part of the KDE project
Copyright (C) 2003 Matthias Kretz <kretz@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License version 2 as published by the Free Software Foundation.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef KSETTINGS_DISPATCHER_H
#define KSETTINGS_DISPATCHER_H
#include <tqobject.h>
#include <tqmap.h>
#include <kdelibs_export.h>
class QCString;
class QSignal;
class QStrList;
template<class T> class KStaticDeleter;
class KInstance;
class KConfig;
namespace KSettings
{
/**
* @ingroup settings
* @short Dispatch change notifications from the KCMs to the program.
*
* Since your program does not have direct control over the KCMs that get loaded
* into the KConfigureDialog you need a way to get notified. This is what you
* do:
* \code
* Dispatcher::self()->registerInstance( instance(), this, TQT_SLOT( loadSettings() ) );
* \endcode
*
* @author Matthias Kretz <kretz@kde.org>
* @since 3.2
*/
class KUTILS_EXPORT Dispatcher : public QObject
{
friend class KStaticDeleter<Dispatcher>;
Q_OBJECT
public:
/**
* Get a reference the the Dispatcher object.
*/
static Dispatcher * self();
/**
* Register a slot to be called when the configuration for the instance
* has changed. @p instance is the KInstance object
* that is passed to KGenericFactory (if it is used). You can query
* it with KGenericFactory<YourClassName>::instance().
* instance->instanceName() is also the same name that is put into the
* .desktop file of the KCMs for the X-KDE-ParentComponents.
*
* @param instance The KInstance object
* @param recv The object that should receive the signal
* @param slot The slot to be called: TQT_SLOT( slotName() )
*/
void registerInstance( KInstance * instance, TQObject * recv, const char * slot );
/**
* @return the KConfig object that belongs to the instanceName
*/
KConfig * configForInstanceName( const TQCString & instanceName );
/**
* @return a list of all the instance names that are currently
* registered
*/
TQStrList instanceNames() const;
//X /**
//X * @return The KInstance object belonging to the instance name you pass
//X * (only works for registered instances of course).
//X */
//X KInstance * instanceForName( const TQCString & instanceName );
public slots:
/**
* Call this slot when the configuration belonging to the associated
* instance name has changed. The registered slot will be called.
*
* @param instanceName The value of X-KDE-ParentComponents.
*/
void reparseConfiguration( const TQCString & instanceName );
/**
* When this slot is called the KConfig objects of all the registered
* instances are sync()ed. This is usefull when some other KConfig
* objects will read/write from/to the same config file, so that you
* can first write out the current state of the KConfig objects.
*/
void syncConfiguration();
private slots:
void unregisterInstance( TQObject * );
private:
Dispatcher( TQObject * parent = 0, const char * name = 0 );
~Dispatcher();
static Dispatcher * m_self;
struct InstanceInfo {
KInstance * instance;
TQSignal * signal;
int count;
};
TQMap<TQCString, InstanceInfo> m_instanceInfo;
TQMap<TQObject *, TQCString> m_instanceName;
class DispatcherPrivate;
DispatcherPrivate * d;
};
}
// vim: sw=4 sts=4 et
#endif // KSETTINGS_DISPATCHER_H
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