src/engines/InstrumentEditorFactory.h

/***************************************************************************
 *                                                                         *
 *   Copyright (C) 2007 Christian Schoenebeck                              *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program 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 General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the Free Software           *
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,                 *
 *   MA  02111-1307  USA                                                   *
 ***************************************************************************/

#ifndef LS_INSTRUMENT_EDITOR_FACTORY_H
#define LS_INSTRUMENT_EDITOR_FACTORY_H

#include <map>
#include <vector>
#include <list>

#include "../common/Exception.h"
#include "InstrumentEditor.h"

#define REGISTER_INSTRUMENT_EDITOR(PluginClass) \
    LinuxSampler::InstrumentEditorFactory::InnerFactoryRegistrator<PluginClass> \
    __auto_register_instrument_editor__##PluginClass;

namespace LinuxSampler {

    class InstrumentEditorFactory {
    public:
        class InnerFactory {
        public:
            virtual InstrumentEditor* Create() = 0;
            virtual void Destroy(InstrumentEditor* pEditor) = 0;
        };

        template<class PluginClass_T>
        class InnerFactoryTemplate : public InnerFactory {
        public:
            virtual InstrumentEditor* Create() {
                return new PluginClass_T();
            }

            virtual void Destroy(InstrumentEditor* pEditor)  {
                delete pEditor;
            }
        };

        template<class PluginClass_T>
        class InnerFactoryRegistrator {
        public:
            InnerFactoryRegistrator() {
                InnerFactoryTemplate<PluginClass_T>* pInnerFactory =
                    new InnerFactoryTemplate<PluginClass_T>();
                InstrumentEditor* pEditor = pInnerFactory->Create();
                if (InnerFactories.count(pEditor->Name())) {
                    pInnerFactory->Destroy(pEditor);
                    delete pInnerFactory;
                } else {
                    InnerFactories[pEditor->Name()] = pInnerFactory;
                    pInnerFactory->Destroy(pEditor);
                }
            }

           ~InnerFactoryRegistrator() {
                InnerFactoryTemplate<PluginClass_T> innerFactory;
                InstrumentEditor* pEditor = innerFactory.Create();
                if (InnerFactories.count(pEditor->Name())) {
                    InnerFactory* pZombie =
                        InnerFactories[pEditor->Name()];
                    InnerFactories.erase(pEditor->Name());
                    if (pZombie) delete pZombie;
                }
                innerFactory.Destroy(pEditor);
            }
        };

        static InstrumentEditor*   Create(String InstrumentEditorName) throw (Exception);
        static void                Destroy(InstrumentEditor* pInstrumentEditor) throw (Exception);
        static std::vector<String> AvailableEditors();
        static String              AvailableEditorsAsString();
        static std::vector<String> MatchingEditors(String sTypeName, String sTypeVersion);
        static void                LoadPlugins();
        static void                ClosePlugins();

    protected:
        static std::map<String, InnerFactory*> InnerFactories;
        static bool                            bPluginsLoaded;
        static std::list<void*>                LoadedDLLs;
    };

} // namespace LinuxSampler

#endif // LS_INSTRUMENT_EDITOR_FACTORY_H
1	/***************************************************************************
2	* *
3	* Copyright (C) 2007 Christian Schoenebeck *
4	* *
5	* This program is free software; you can redistribute it and/or modify *
6	* it under the terms of the GNU General Public License as published by *
7	* the Free Software Foundation; either version 2 of the License, or *
8	* (at your option) any later version. *
9	* *
10	* This program is distributed in the hope that it will be useful, *
11	* but WITHOUT ANY WARRANTY; without even the implied warranty of *
12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13	* GNU General Public License for more details. *
14	* *
15	* You should have received a copy of the GNU General Public License *
16	* along with this program; if not, write to the Free Software *
17	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
18	* MA 02111-1307 USA *
19	***************************************************************************/
20
21	#ifndef LS_INSTRUMENT_EDITOR_FACTORY_H
22	#define LS_INSTRUMENT_EDITOR_FACTORY_H
23
24	#include <map>
25	#include <vector>
26	#include <list>
27
28	#include "../common/Exception.h"
29	#include "InstrumentEditor.h"
30
31	#define REGISTER_INSTRUMENT_EDITOR(PluginClass) \
32	LinuxSampler::InstrumentEditorFactory::InnerFactoryRegistrator<PluginClass> \
33	__auto_register_instrument_editor__##PluginClass;
34
35	namespace LinuxSampler {
36
37	class InstrumentEditorFactory {
38	public:
39	class InnerFactory {
40	public:
41	virtual InstrumentEditor* Create() = 0;
42	virtual void Destroy(InstrumentEditor* pEditor) = 0;
43	};
44
45	template<class PluginClass_T>
46	class InnerFactoryTemplate : public InnerFactory {
47	public:
48	virtual InstrumentEditor* Create() {
49	return new PluginClass_T();
50	}
51
52	virtual void Destroy(InstrumentEditor* pEditor) {
53	delete pEditor;
54	}
55	};
56
57	template<class PluginClass_T>
58	class InnerFactoryRegistrator {
59	public:
60	InnerFactoryRegistrator() {
61	InnerFactoryTemplate<PluginClass_T>* pInnerFactory =
62	new InnerFactoryTemplate<PluginClass_T>();
63	InstrumentEditor* pEditor = pInnerFactory->Create();
64	if (InnerFactories.count(pEditor->Name())) {
65	pInnerFactory->Destroy(pEditor);
66	delete pInnerFactory;
67	} else {
68	InnerFactories[pEditor->Name()] = pInnerFactory;
69	pInnerFactory->Destroy(pEditor);
70	}
71	}
72
73	~InnerFactoryRegistrator() {
74	InnerFactoryTemplate<PluginClass_T> innerFactory;
75	InstrumentEditor* pEditor = innerFactory.Create();
76	if (InnerFactories.count(pEditor->Name())) {
77	InnerFactory* pZombie =
78	InnerFactories[pEditor->Name()];
79	InnerFactories.erase(pEditor->Name());
80	if (pZombie) delete pZombie;
81	}
82	innerFactory.Destroy(pEditor);
83	}
84	};
85
86	static InstrumentEditor* Create(String InstrumentEditorName) throw (Exception);
87	static void Destroy(InstrumentEditor* pInstrumentEditor) throw (Exception);
88	static std::vector<String> AvailableEditors();
89	static String AvailableEditorsAsString();
90	static std::vector<String> MatchingEditors(String sTypeName, String sTypeVersion);
91	static void LoadPlugins();
92	static void ClosePlugins();
93
94	protected:
95	static std::map<String, InnerFactory*> InnerFactories;
96	static bool bPluginsLoaded;
97	static std::list<void*> LoadedDLLs;
98	};
99
100	} // namespace LinuxSampler
101
102	#endif // LS_INSTRUMENT_EDITOR_FACTORY_H