klibloader.h

/* This file is part of the KDE libraries
   Copyright (C) 1999 Torben Weis <weis@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 KLIBLOADER_H
#define KLIBLOADER_H
 
#include <tqobject.h>
#include <tqstring.h>
#include <tqstringlist.h>
#include <tqasciidict.h>
#include <tqptrlist.h>
#include <tdeglobal.h>
 
#include <stdlib.h> // For backwards compatibility
 
class TDEInstance;
class TQTimer;
class KLibrary;
class KLibFactory;
class KLibFactoryPrivate;
class KLibLoaderPrivate;
class KLibraryPrivate;
 
# define K_EXPORT_COMPONENT_FACTORY( libname, factory ) \
    extern "C" { TDE_EXPORT void *init_##libname() { return new factory; } }

class TDECORE_EXPORT KLibrary : public TQObject
{
    friend class KLibLoader;
    friend class TQAsciiDict<KLibrary>;
 
    TQ_OBJECT
public:
    KLibrary( const TQString& libname, const TQString& filename, void * handle );

    TQString name() const;

    TQString fileName() const;

    KLibFactory* factory();

    void* symbol( const char* name ) const;

    bool hasSymbol( const char* name ) const;

    void unload() const;
 
private slots:
    void slotObjectCreated( TQObject *obj );
    void slotObjectDestroyed();
    void slotTimeout();
 
private:
    ~KLibrary();
 
    TQString m_libname;
    TQString m_filename;
    KLibFactory* m_factory;
    void * m_handle;
    TQPtrList<TQObject> m_objs;
    TQTimer *m_timer;
    KLibraryPrivate *d;
};
 
class KLibWrapPrivate;

class TDECORE_EXPORT KLibLoader : public TQObject
{
    friend class KLibrary;
 
    TQ_OBJECT
public:
    ~KLibLoader();

    KLibFactory* factory( const char* libname );

    virtual KLibrary* library( const char* libname );

    KLibrary* globalLibrary( const char *name );

    TQString lastErrorMessage() const;

    virtual void unloadLibrary( const char *libname );

    static KLibLoader* self();

    static void cleanUp();

    static TQString findLibrary( const char * name, const TDEInstance * instance = TDEGlobal::instance() );
 
protected:
    KLibLoader( TQObject* parent = 0, const char* name = 0 );
 
private slots:
    void slotLibraryDestroyed();
private:
    void close_pending( KLibWrapPrivate * );
    TQAsciiDict<KLibWrapPrivate> m_libs;
 
    static KLibLoader* s_self;
 
protected:
    virtual void virtual_hook( int id, void* data );
private:
    KLibLoaderPrivate *d;
};

class TDECORE_EXPORT KLibFactory : public TQObject
{
    TQ_OBJECT
public:
    KLibFactory( TQObject* parent = 0, const char* name = 0 );
    virtual ~KLibFactory();

 
     TQObject* create( TQObject* parent = 0, const char* name = 0, const char* classname = "TQObject", const TQStringList &args = TQStringList() );
 
signals:
    void objectCreated( TQObject *obj );
 
 
protected:

    virtual TQObject* createObject( TQObject* parent = 0, const char* name = 0,
                                   const char* className = "TQObject",
                                   const TQStringList &args = TQStringList() ) = 0;
 
 
protected:
    virtual void virtual_hook( int id, void* data );
private:
    KLibFactoryPrivate *d;
};
 
#endif