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source: orxonox.OLD/trunk/src/lib/util/loading/factory.h @ 8553

Last change on this file since 8553 was 8148, checked in by bensch, 19 years ago

trunk: output of EventListener Nicer

File size: 2.6 KB
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1/*
2   orxonox - the future of 3D-vertical-scrollers
3
4   Copyright (C) 2004 orx
5
6   This program is free software; you can redistribute it and/or modify
7   it under the terms of the GNU General Public License as published by
8   the Free Software Foundation; either version 2, or (at your option)
9   any later version.
10
11   ### File Specific:
12   main-programmer: Christian Meyer
13   co-programmer: Benjamin Grauer
14*/
15
16/*!
17 * @file factory.h
18 * @brief A loadable object handler
19*/
20
21
22#ifndef _FACTORY_H
23#define _FACTORY_H
24
25class BaseObject;
26
27#include "parser/tinyxml/tinyxml.h"
28#include "base_object.h"
29#include <vector>
30#include <list>
31
32/**
33 * Creates a factory to a Loadable Class.
34 * this should be used at the beginning of all the Classes that should be loadable (in the cc-file)
35 */
36#define CREATE_FACTORY(CLASS_NAME, CLASS_ID) \
37    tFactory<CLASS_NAME>* global_##CLASS_NAME##_Factory = new tFactory<CLASS_NAME>(#CLASS_NAME, CLASS_ID)
38
39//! The Factory is a loadable object handler
40class Factory : public BaseObject {
41
42 public:
43  virtual ~Factory ();
44
45  static void deleteFactories();
46
47  static  BaseObject* fabricate(const std::string& className);
48  static  BaseObject* fabricate(ClassID classID);
49  static  BaseObject* fabricate(const TiXmlElement* root = NULL);
50
51
52  bool operator==(ClassID classID) const;
53  bool operator==(const char* className) const;
54  bool operator==(const std::string& className) const;
55
56  protected:
57    Factory (const std::string& factoryName, ClassID classID);
58    virtual BaseObject* fabricateObject(const TiXmlElement* root = NULL) const = 0;
59
60  protected:
61    const ClassID                 classID;              //!< The Class-Identifyer of the Factory.
62    const std::string             className;            //!< The name of the Class.
63    static std::list<Factory*>*   factoryList;          //!< List of Registered Factories
64};
65
66/**
67 *  @brief a factory that is able to load any kind of Object
68 * (this is a Functor)
69 */
70template<class T> class tFactory : public Factory
71{
72 public:
73 /**
74  * @brief creates a new type Factory to enable the loading of T
75  * @param factoryName the Name of the Factory to load.
76  * @param classID the ID of the Class to be created.
77  */
78  tFactory (const char* factoryName, ClassID classID)
79   : Factory(factoryName, classID)
80  {  }
81
82  private:
83   /**
84    * @brief fabricates an Object of type T, with the constructor T::T(const TiXmlElemnt*)
85    * @param root the TiXmlElement T should load parameters from.
86    * @return the newly fabricated T.
87    */
88    virtual BaseObject* fabricateObject(const TiXmlElement* root = NULL) const
89    {
90      return new T(root);
91    }
92};
93
94#endif /* _FACTORY_H */
95
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