plugin.h Source File

00001 /*
00002     Copyright (C) 2001 by Jorrit Tyberghein
00003     Copyright (C) 1999 by Andrew Zabolotny <bit@eltech.ru>
00004 
00005     This library is free software; you can redistribute it and/or
00006     modify it under the terms of the GNU Library General Public
00007     License as published by the Free Software Foundation; either
00008     version 2 of the License, or (at your option) any later version.
00009 
00010     This library is distributed in the hope that it will be useful,
00011     but WITHOUT ANY WARRANTY; without even the implied warranty of
00012     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013     Library General Public License for more details.
00014 
00015     You should have received a copy of the GNU Library General Public
00016     License along with this library; if not, write to the Free
00017     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00018 */
00019 
00020 #ifndef __IUTIL_PLUGIN_H__
00021 #define __IUTIL_PLUGIN_H__
00022 
00023 #include "csutil/scf.h"
00024 
00025 struct iComponent;
00026 
00033 #define CS_QUERY_PLUGIN_CLASS(Object,ClassID,Interface)                 \
00034   (Interface *)((Object)->QueryPlugin                                   \
00035   (ClassID, #Interface, VERSION_##Interface))
00036 
00043 #define CS_LOAD_PLUGIN(Object,ClassID,Interface)                        \
00044   (Interface *)((Object)->LoadPlugin                                    \
00045   (ClassID, #Interface, VERSION_##Interface))
00046 
00051 #define CS_LOAD_PLUGIN_ALWAYS(Object,ClassID)                   \
00052   ((Object)->LoadPlugin (ClassID, NULL, 0))
00053 
00054 SCF_VERSION (iPluginManager, 0, 0, 3);
00055 
00059 struct iPluginManager : public iBase
00060 {
00062   virtual iBase *LoadPlugin (const char *classID,
00063     const char *iInterface = NULL, int iVersion = 0) = 0;
00071   virtual iBase *QueryPlugin (const char *iInterface, int iVersion) = 0;
00073   virtual iBase *QueryPlugin (const char* classID,
00074         const char *iInterface, int iVersion) = 0;
00076   virtual bool UnloadPlugin (iComponent *obj) = 0;
00078   virtual bool RegisterPlugin (const char *classID, iComponent *obj) = 0;
00080   virtual int GetPluginCount () = 0;
00082   virtual iBase* GetPlugin (int idx) = 0;
00084   virtual void Clear () = 0;
00085 };
00086 
00087 #endif // __IUTIL_PLUGIN_H__