PluginFactory.h

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/*
 * PluginFactory.h
 *
 * Smalltalk like class library for C++
 * Helper class to access plug-ins in dynamic linkable libraries. Header.
 *
 * Copyright (c) 2003-2005 Milan Cermak
 */
/*
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#ifndef __PLUGINFACTORY_H
#define __PLUGINFACTORY_H

#include <stlib/external/ExternalInterface.h>

#include <stlib/Set.h>
#include <stlib/String.h>

namespace External {

class Plugin;

class PluginFactory : public ExternalInterface
{
  protected:
    static Set *_plugins;        //< Loaded plug-ins
    String *name;                //< Plug-in name

    static String defaultNewInstanceSelector;
    static String defaultPluginNameSelector;

    String *new_instance_selector;
    String *plugin_name_selector;

  public:
    PluginFactory(String *pluginLibName);
    virtual ~PluginFactory(void);

    /* Class-accessing protocol */
    static Set *plugins(void);

    /* Accessing protocol */
    virtual void newInstanceSelector(String *selector);
    virtual void pluginNameSelector(String *selector);

    /* Searching protocol */
    static PluginFactory *pluginWithName(String *pluginName);

    /* Procedure protocol */
    virtual Plugin *newPluginInstance(void);
    virtual String *pluginName(void);
};

};

#endif /* __PLUGINFACTORY_H */

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