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122 lines
3.7 KiB
122 lines
3.7 KiB
/*
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This file is part of KDE Kontact.
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Copyright (c) 2003 David Faure <faure@kde.org>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#ifndef KONTACT_UNIQUEAPPHANDLER_H
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#define KONTACT_UNIQUEAPPHANDLER_H
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#include <dcopobject.h>
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#include <kontact/plugin.h>
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#include <kdemacros.h>
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namespace Kontact
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{
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/**
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* DCOP Object that has the name of the standalone application (e.g. "kmail")
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* and implements newInstance() so that running the separate application does
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* the right thing when kontact is running.
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* By default this means simply bringing the main window to the front,
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* but newInstance can be reimplemented.
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*/
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class KDE_EXPORT UniqueAppHandler : public DCOPObject
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{
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K_DCOP
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public:
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UniqueAppHandler( Plugin* plugin ) : DCOPObject( plugin->name() ), mPlugin( plugin ) {}
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/// This must be reimplemented so that app-specific command line options can be parsed
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virtual void loadCommandLineOptions() = 0;
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/// We can't use k_dcop and dcopidl here, because the data passed
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/// to newInstance can't be expressed in terms of normal data types.
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virtual int newInstance();
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Plugin* plugin() const { return mPlugin; }
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private:
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Plugin* mPlugin;
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};
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/// Base class for UniqueAppHandler
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class UniqueAppHandlerFactoryBase
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{
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public:
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virtual UniqueAppHandler* createHandler( Plugin* ) = 0;
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};
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/**
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* Used by UniqueAppWatcher below, to create the above UniqueAppHandler object
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* when necessary.
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* The template argument is the UniqueAppHandler-derived class.
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* This allows to remove the need to subclass UniqueAppWatcher.
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*/
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template <class T> class UniqueAppHandlerFactory : public UniqueAppHandlerFactoryBase
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{
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public:
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virtual UniqueAppHandler* createHandler( Plugin* plugin ) {
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(void)plugin->dcopClient(); // ensure that we take over the DCOP name
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return new T( plugin );
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}
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};
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/**
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* If the standalone application is running by itself, we need to watch
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* for when the user closes it, and activate the uniqueapphandler then.
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* This prevents, on purpose, that the standalone app can be restarted.
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* Kontact takes over from there.
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*
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*/
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class KDE_EXPORT UniqueAppWatcher : public TQObject
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{
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Q_OBJECT
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public:
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/**
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* Create an instance of UniqueAppWatcher, which does everything necessary
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* for the "unique application" behavior: create the UniqueAppHandler as soon
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* as possible, i.e. either right now or when the standalone app is closed.
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*
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* @param factory templatized factory to create the handler. Example:
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* ... Note that the watcher takes ownership of the factory.
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* @param plugin is the plugin application
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*/
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UniqueAppWatcher( UniqueAppHandlerFactoryBase* factory, Plugin* plugin );
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virtual ~UniqueAppWatcher();
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bool isRunningStandalone() const { return mRunningStandalone; }
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protected slots:
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void unregisteredFromDCOP( const TQCString& appId );
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private:
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bool mRunningStandalone;
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UniqueAppHandlerFactoryBase* mFactory;
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Plugin* mPlugin;
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};
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} // namespace
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#endif /* KONTACT_UNIQUEAPPHANDLER_H */
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