plugldr.h Source File

00001 /*
00002     Copyright (C) 1998-2001 by Jorrit Tyberghein
00003 
00004     This library is free software; you can redistribute it and/or
00005     modify it under the terms of the GNU Library General Public
00006     License as published by the Free Software Foundation; either
00007     version 2 of the License, or (at your option) any later version.
00008 
00009     This library is distributed in the hope that it will be useful,
00010     but WITHOUT ANY WARRANTY; without even the implied warranty of
00011     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012     Library General Public License for more details.
00013 
00014     You should have received a copy of the GNU Library General Public
00015     License along with this library; if not, write to the Free
00016     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00017 */
00018 
00019 #ifndef __CS_PLUGLDR_H__
00020 #define __CS_PLUGLDR_H__
00021 
00022 #include "csutil/csvector.h"
00023 #include "csutil/util.h"
00024 
00025 struct iObjectRegistry;
00026 
00027 struct csPluginLoadRec
00028 {
00029   char* Tag;
00030   char* ClassID;
00031 
00032   csPluginLoadRec (const char* iTag, const char* iClassID)
00033   { Tag = csStrNew (iTag); ClassID = csStrNew (iClassID); }
00034   ~csPluginLoadRec ()
00035   { delete [] ClassID; delete [] Tag; }
00036 };
00037 
00038 class csPluginList : public csVector
00039 {
00040 public:
00041   virtual ~csPluginList ()
00042   { DeleteAll (); }
00043   bool Sort (iObjectRegistry* object_reg);
00044   csPluginLoadRec &Get (int idx)
00045   { return *(csPluginLoadRec *)csVector::Get (idx); }
00046   virtual bool FreeItem (csSome Item)
00047   { delete (csPluginLoadRec *)Item; return true; }
00048 private:
00049   bool RecurseSort (iObjectRegistry*, int row, int *order, int *loop,
00050     bool *matrix);
00051 };
00052 
00057 class csPluginLoader
00058 {
00059   friend class csPluginList;
00060 
00061 private:
00062   // The object registry.
00063   iObjectRegistry* object_reg;
00064   // Requested plugins.
00065   csPluginList requested_plugins;
00066 
00067 public:
00069   csPluginLoader (iObjectRegistry* object_reg);
00071   virtual ~csPluginLoader ();
00072 
00083   void RequestPlugin (const char* pluginName, const char* tagName);
00084 
00086   bool LoadPlugins ();
00087 };
00088 
00089 #endif // __CS_PLUGLDR_H__
00090