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/*
This file is part of KDE Kontact.
Copyright (c) 2003 David Faure <faure@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 as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
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 KONTACT_UNIQUEAPPHANDLER_H
#define KONTACT_UNIQUEAPPHANDLER_H
#include <dcopobject.h>
#include <plugin.h>
#include <kdemacros.h>
namespace Kontact
{
/**
* DCOP Object that has the name of the standalone application (e.g. "kmail")
* and implements newInstance() so that running the separate application does
* the right thing when kontact is running.
* By default this means simply bringing the main window to the front,
* but newInstance can be reimplemented.
*/
class KDE_EXPORT UniqueAppHandler : public DCOPObject
{
K_DCOP
public:
UniqueAppHandler( Plugin* plugin ) : DCOPObject( plugin->name() ), mPlugin( plugin ) {}
/// This must be reimplemented so that app-specific command line options can be parsed
virtual void loadCommandLineOptions() = 0;
/// We can't use k_dcop and dcopidl here, because the data passed
/// to newInstance can't be expressed in terms of normal data types.
virtual int newInstance();
Plugin* plugin() const { return mPlugin; }
/// Load the kontact command line options.
static void loadKontactCommandLineOptions();
private:
Plugin* mPlugin;
};
/// Base class for UniqueAppHandler
class UniqueAppHandlerFactoryBase
{
public:
UniqueAppHandlerFactoryBase() {}
virtual ~UniqueAppHandlerFactoryBase() {}
virtual UniqueAppHandler* createHandler( Plugin* ) = 0;
};
/**
* Used by UniqueAppWatcher below, to create the above UniqueAppHandler object
* when necessary.
* The template argument is the UniqueAppHandler-derived class.
* This allows to remove the need to subclass UniqueAppWatcher.
*/
template <class T> class UniqueAppHandlerFactory : public UniqueAppHandlerFactoryBase
{
public:
virtual UniqueAppHandler* createHandler( Plugin* plugin ) {
(void)plugin->dcopClient(); // ensure that we take over the DCOP name
return new T( plugin );
}
};
/**
* If the standalone application is running by itself, we need to watch
* for when the user closes it, and activate the uniqueapphandler then.
* This prevents, on purpose, that the standalone app can be restarted.
* Kontact takes over from there.
*
*/
class KDE_EXPORT UniqueAppWatcher : public TQObject
{
Q_OBJECT
public:
/**
* Create an instance of UniqueAppWatcher, which does everything necessary
* for the "unique application" behavior: create the UniqueAppHandler as soon
* as possible, i.e. either right now or when the standalone app is closed.
*
* @param factory templatized factory to create the handler. Example:
* ... Note that the watcher takes ownership of the factory.
* @param plugin is the plugin application
*/
UniqueAppWatcher( UniqueAppHandlerFactoryBase* factory, Plugin* plugin );
virtual ~UniqueAppWatcher();
bool isRunningStandalone() const { return mRunningStandalone; }
protected slots:
void unregisteredFromDCOP( const TQCString& appId );
private:
bool mRunningStandalone;
UniqueAppHandlerFactoryBase* mFactory;
Plugin* mPlugin;
};
} // namespace
#endif /* KONTACT_UNIQUEAPPHANDLER_H */
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