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104 lines
4.2 KiB
104 lines
4.2 KiB
/* This file is part of the KDE libraries
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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 version 2 as published by the Free Software Foundation.
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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 KDCOPSERVICESTARTER_H
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#define KDCOPSERVICESTARTER_H
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#include <tqstring.h>
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#include <kstaticdeleter.h>
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class KDCOPServiceStarter;
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class TQCString;
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/**
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* A generic DCOP service starter, using TDETrader.
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* The default implementation starts new processes, but this interface can
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* also be reimplemented by specific applications to provide dlopened in-process DCOP objects.
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* @author David Faure <faure@kde.org>
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*/
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class TDEIO_EXPORT KDCOPServiceStarter {
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friend class KStaticDeleter<KDCOPServiceStarter>;
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public:
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static KDCOPServiceStarter* self();
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/**
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* Check if a given DCOP interface is available - from the serviceType it's supposed to implement.
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*
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* The trader is queried to find the preferred application for this serviceType,
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* with the constraint that its X-DCOP-ServiceName property must be defined.
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* Then the DCOP server is checked. If the service is not available,
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* this method will call startServiceFor to start it.
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*
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* @param serviceType the type of service we're looking for
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* @param constraint see TDETrader
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* @param preferences see TDETrader
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* @param error On failure, @p error contains a description of the error
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* that occurred. If the pointer is 0, the argument will be
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* ignored
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* @param dcopService On success, @p dcopService contains the DCOP name
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* under which this service is available. If the pointer is 0 the argument
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* will be ignored
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* @param flags for future extensions (currently unused)
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*
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* @return an error code indicating success (== 0) or failure (> 0).
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*/
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int findServiceFor( const TQString& serviceType,
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const TQString& constraint = TQString::null,
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const TQString& preferences = TQString::null,
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TQString *error=0, TQCString* dcopService=0,
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int flags=0 );
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/**
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* Find an implementation of the given @p serviceType,
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* and start it, to use its DCOP interface.
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* The default implementation uses TDETrader to find the preferred Application,
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* and then starts it using kapp->startService...
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*
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* However applications (like kontact) can reimplement this method, to provide
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* an in-process way of loading the implementation for this service type.
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*
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* @param serviceType the type of service we're looking for
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* @param constraint see TDETrader
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* @param preferences see TDETrader
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* @param error On failure, @p error contains a description of the error
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* that occurred. If the pointer is 0, the argument will be
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* ignored
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* @param dcopService On success, @p dcopService contains the DCOP name
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* under which this service is available. If the pointer is 0 the argument
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* will be ignored
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* @param flags for future extensions (currently unused)
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*
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* @return an error code indicating success (== 0) or failure (> 0).
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*/
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virtual int startServiceFor( const TQString& serviceType,
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const TQString& constraint = TQString::null,
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const TQString& preferences = TQString::null,
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TQString *error=0, TQCString* dcopService=0,
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int flags=0 );
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protected:
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KDCOPServiceStarter();
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virtual ~KDCOPServiceStarter();
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private:
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static KDCOPServiceStarter* s_self;
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};
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#endif
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