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	schoenebeck	1212	/***************************************************************************
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