рд╡рд░реНрддрдорд╛рди рдкрд░рд┐рдпреЛрдЬрдирд╛ рдореЗрдВ, рдХрд┐рд╕реА рддрд░рд╣ рдХреЗ рдкрд╣рдЪрд╛рдирдХрд░реНрддрд╛ рдХрд╛ рдЙрдкрдпреЛрдЧ рдХрд░рдХреЗ рд╡рд┐рднрд┐рдиреНрди рд╡рд╕реНрддреБрдУрдВ рдХреЗ рд╕реЗрдЯ рдХреЗ рдирд┐рд░реНрдорд╛рдг рдХреЗ рд▓рд┐рдП рдЕрдХреНрд╕рд░ рдЖрд╡рд╢реНрдпрдХрддрд╛ рдЙрддреНрдкрдиреНрди рд╣реБрдИ рд╣реИред рдПрдХ рдХрд╛рд░рдЦрд╛рдирд╛ рдХреБрдЫ рд╕реЗрдЯ рдХреЗ рд▓рд┐рдП рд▓рд┐рдЦрд╛ рдЧрдпрд╛ рдерд╛, рджреВрд╕рд░рд╛ред рддрдм рд╕рдордЭ рдореЗрдВ рдЖрдпрд╛ рдХрд┐ рд╣рдо рдПрдХ рд╣реА рдХрд╛рдо рдХрд░ рд░рд╣реЗ рдереЗ рдФрд░ рд╣рдореЗрдВ рдХрд┐рд╕реА рддрд░рд╣ рдХреЗ рджреЛрд╣рд░рд╛рдП рдЬрд╛рдиреЗ рд╡рд╛рд▓реЗ рд╕рдорд╛рдзрд╛рди рдХреА рдЬрд░реВрд░рдд рдереАред
рдкрд░рд┐рдпреЛрдЬрдирд╛ Qt рдкрд░ рдЖрдзрд╛рд░рд┐рдд рд╣реИ, рдЬреЛ рдХрд┐ рдЬреИрд╕рд╛ рдХрд┐ рдЖрдк рдЬрд╛рдирддреЗ рд╣реИрдВ, рдореЗрдЯрд╛рдбреЗрдЯрд╛ рдХреЗ рд╕рд╛рде рдХрд╛рдо рдХрд░рдиреЗ рдХреЗ рд▓рд┐рдП рддрдВрддреНрд░ рд╡рд┐рдХрд╕рд┐рдд рдХрд┐рдпрд╛ рд╣реИред рдлрд┐рд░ рднреА, QMetaObject рдХреЗ рдорд╛рдзреНрдпрдо рд╕реЗ рд╡рд╕реНрддреБрдУрдВ рдХрд╛ рдирд┐рд░реНрдорд╛рдг рд╣рдореЗрдВ рджреЛ рдХрд╛рд░рдгреЛрдВ рд╕реЗ рд╕рдВрддреБрд╖реНрдЯ рдирд╣реАрдВ рдХрд░рддрд╛ рд╣реИ: рд╕рдмрд╕реЗ рдкрд╣рд▓реЗ, рдирд┐рд░реНрдорд┐рдд рд╡рд╕реНрддреБрдУрдВ рдХреЛ QObjects рд╣реЛрдирд╛ рдЪрд╛рд╣рд┐рдП, рдФрд░ рджреВрд╕рд░реА рдмрд╛рдд, рдирд┐рд░реНрдорд╛рдг рдХрд░рддреЗ рд╕рдордп, рд╣рдореЗрдВ рдПрдХ QObject рдХреЗ рд▓рд┐рдП рдПрдХ рд╕рдВрдХреЗрддрдХ рдорд┐рд▓рддрд╛ рд╣реИ, рдЬрд┐рд╕реЗ рд╡реИрд╕реЗ рднреА рдмрджрд▓рдирд╛ рд╣реЛрдЧрд╛, рдЬреЛ рд╡рд┐рд╢реБрджреНрдз рд░реВрдк рд╕реЗ рд╕реМрдВрджрд░реНрдпрд╡рд╛рджреА рдмрджрд╕реВрд░рдд рд╣реИред
рдХрд╛рд░реНрдпреЛрдВ рдХреА рд╢реНрд░реЗрдгреА рдХрд╛ рд╡рд┐рд╢реНрд▓реЗрд╖рдг рдХрд░рдиреЗ рдХреЗ рдмрд╛рдж, рд╣рдо рдЗрд╕ рдирд┐рд╖реНрдХрд░реНрд╖ рдкрд░ рдкрд╣реБрдВрдЪреЗ рдХрд┐ рд╣рдо рд╡рд╛рд░рд┐рд╕реЛрдВ рдХреЗ рдХреБрдЫ рд╕реЗрдЯреЛрдВ рдХреЗ рдЖрдзрд╛рд░ рд╡рд░реНрдЧреЛрдВ рдореЗрдВ рдПрдХ рд╕реНрдерд┐рд░ рдХрд╛рд░рдЦрд╛рдирд╛ рдЪрд╛рд╣рддреЗ рд╣реИрдВред рдпрд╛рдиреА рдХреБрдЫ рдЗрд╕ рддрд░рд╣ рд▓рд┐рдЦреЗрдВ:
BaseClass * instance = BaseClass::factory()->build("derived_name");
рд╕рд╛рде рд╣реА, рд╣рдо рд╣рд░ рдмрд╛рд░ рдПрдХ рд╕рдорд╛рди рд╕реЗрд╡рд╛ рдХреЛрдб рдирд╣реАрдВ рд▓рд┐рдЦрдирд╛ рдЪрд╛рд╣рддреЗ рд╣реИрдВред рд╣рд╛рдВ, рд╣рдо рдЖрд▓рд╕реА рд╣реИрдВред
рдФрд░ рдирд┐рд╢реНрдЪрд┐рдд рд░реВрдк рд╕реЗ рд╣рдо рдирд╣реАрдВ рдЪрд╛рд╣рддреЗ рдХрд┐ рдлреИрдХреНрдЯреНрд░реА рдпрд╛ рдмреЗрд╕ рдХреНрд▓рд╛рд╕ рд╕рднреА рдЙрддреНрддрд░рд╛рдзрд┐рдХрд╛рд░рд┐рдпреЛрдВ рдХреЗ рдмрд╛рд░реЗ рдореЗрдВ рдЬрд╛рдиреЗред
рдереЛрдбрд╝реЗ рд╡рд┐рдЪрд╛рд░ рдХреЗ рд╕рд╛рде, рд╣рдо рдПрдХ рдРрд╕рд╛ рдХрд╛рд░рдЦрд╛рдирд╛ рд▓реЗрдХрд░ рдЖрдП рдЬреЛ рд╣рдорд╛рд░реЗ рдХрд╛рд░реНрдпреЛрдВ рдХреА рдПрдХ рд╡рд┐рд╕реНрддреГрдд рд╢реНрд░реГрдВрдЦрд▓рд╛ рдХреЛ рд╣рд▓ рдХрд░рддрд╛ рд╣реИред
рдХрд╛рд░рдЦрд╛рдирд╛ рд╣реИ
рд╕рдмрд╕реЗ рдкрд╣рд▓реЗ, рдореИрдВ рдХрд╛рд░рдЦрд╛рдирд╛ рдХреЛрдб рджреЗрддрд╛ рд╣реВрдБ, рдХреНрдпреЛрдВрдХрд┐ рдпрд╣ рдХреЙрдореНрдкреИрдХреНрдЯ рдирд┐рдХрд▓рд╛ рд╣реИ:
template<class Base> class UnifiedFactory { public: UnifiedFactory(){} ~UnifiedFactory(){qDeleteAll(m_builders);} template<class T> void registerClass(const QString& name) { delete m_builders.value(name); m_builders.insert(name, new Builder<T>()); } Base * build(const QString& name) const { BaseBuilder * builder = m_builders.value(name); if(builder) return builder->build(); return 0; } private: class BaseBuilder { public: virtual Base * build() const = 0; }; template<class T> class Builder : public BaseBuilder { public: virtual Base * build() const { return new T(); } }; typedef QHash<QString, BaseBuilder*> Builders; Builders m_builders; };
рдЬреИрд╕рд╛ рдХрд┐ рдЖрдк рджреЗрдЦ рд╕рдХрддреЗ рд╣реИрдВ, рдпрд╣ рдЯреЗрдореНрдкрд▓реЗрдЯ рдлреИрдХреНрдЯреНрд░реА рдХреЗрд╡рд▓ рдПрдХ рд╕рд╛рдорд╛рдиреНрдп рдЖрдзрд╛рд░ рд╡рд░реНрдЧ рдХреЗ рд╕рд╛рде рд╡рд╕реНрддреБрдУрдВ рдХрд╛ рдирд┐рд░реНрдорд╛рдг рдХрд░ рд╕рдХрддреА рд╣реИ
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, template registerClass(const QString& name), T - .
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#define UNIFIED_FACTORY(BaseType) \ static UnifiedFactory<BaseType>* factory() \ { \ static UnifiedFactory<BaseType> s_factory; \ return &s_factory; \ } \ template<class T> \ class AutoRegistrer \ { \ public: \ AutoRegistrer(const QString& name){factory()->registerClass<T>(name);} \ }; \ #define UF_REGISTER_DERIVED_NAMED(type, name) \ static const type::AutoRegistrer<type> type##Registrator(name); #define UF_REGISTER_DERIVED(type) UF_REGISTER_DERIVED_NAMED(type, #type)
, - template class AutoRegistrer, - - .
UF_REGISTER_DERIVED_NAMED , AutoRegistrer.
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class Base { publi: UNIFIED_FACTORY(Base) }; class Derived1 : public Base {...} UF_REGISTER_DERIVED(Derived1) class Derived2 : public Base {...} UF_REGISTER_DERIVED(Derived2) .... Base * instance = Base::factory()->build("Derived1")
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, template registerClass(const QString& name), T - .
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#define UNIFIED_FACTORY(BaseType) \ static UnifiedFactory<BaseType>* factory() \ { \ static UnifiedFactory<BaseType> s_factory; \ return &s_factory; \ } \ template<class T> \ class AutoRegistrer \ { \ public: \ AutoRegistrer(const QString& name){factory()->registerClass<T>(name);} \ }; \ #define UF_REGISTER_DERIVED_NAMED(type, name) \ static const type::AutoRegistrer<type> type##Registrator(name); #define UF_REGISTER_DERIVED(type) UF_REGISTER_DERIVED_NAMED(type, #type)
, - template class AutoRegistrer, - - .
UF_REGISTER_DERIVED_NAMED , AutoRegistrer.
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class Base { publi: UNIFIED_FACTORY(Base) }; class Derived1 : public Base {...} UF_REGISTER_DERIVED(Derived1) class Derived2 : public Base {...} UF_REGISTER_DERIVED(Derived2) .... Base * instance = Base::factory()->build("Derived1")
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, template registerClass(const QString& name), T - .
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#define UNIFIED_FACTORY(BaseType) \ static UnifiedFactory<BaseType>* factory() \ { \ static UnifiedFactory<BaseType> s_factory; \ return &s_factory; \ } \ template<class T> \ class AutoRegistrer \ { \ public: \ AutoRegistrer(const QString& name){factory()->registerClass<T>(name);} \ }; \ #define UF_REGISTER_DERIVED_NAMED(type, name) \ static const type::AutoRegistrer<type> type##Registrator(name); #define UF_REGISTER_DERIVED(type) UF_REGISTER_DERIVED_NAMED(type, #type)
, - template class AutoRegistrer, - - .
UF_REGISTER_DERIVED_NAMED , AutoRegistrer.
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class Base { publi: UNIFIED_FACTORY(Base) }; class Derived1 : public Base {...} UF_REGISTER_DERIVED(Derived1) class Derived2 : public Base {...} UF_REGISTER_DERIVED(Derived2) .... Base * instance = Base::factory()->build("Derived1")
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, template registerClass(const QString& name), T - .
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#define UNIFIED_FACTORY(BaseType) \ static UnifiedFactory<BaseType>* factory() \ { \ static UnifiedFactory<BaseType> s_factory; \ return &s_factory; \ } \ template<class T> \ class AutoRegistrer \ { \ public: \ AutoRegistrer(const QString& name){factory()->registerClass<T>(name);} \ }; \ #define UF_REGISTER_DERIVED_NAMED(type, name) \ static const type::AutoRegistrer<type> type##Registrator(name); #define UF_REGISTER_DERIVED(type) UF_REGISTER_DERIVED_NAMED(type, #type)
, - template class AutoRegistrer, - - .
UF_REGISTER_DERIVED_NAMED , AutoRegistrer.
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class Base { publi: UNIFIED_FACTORY(Base) }; class Derived1 : public Base {...} UF_REGISTER_DERIVED(Derived1) class Derived2 : public Base {...} UF_REGISTER_DERIVED(Derived2) .... Base * instance = Base::factory()->build("Derived1")
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, template registerClass(const QString& name), T - .
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#define UNIFIED_FACTORY(BaseType) \ static UnifiedFactory<BaseType>* factory() \ { \ static UnifiedFactory<BaseType> s_factory; \ return &s_factory; \ } \ template<class T> \ class AutoRegistrer \ { \ public: \ AutoRegistrer(const QString& name){factory()->registerClass<T>(name);} \ }; \ #define UF_REGISTER_DERIVED_NAMED(type, name) \ static const type::AutoRegistrer<type> type##Registrator(name); #define UF_REGISTER_DERIVED(type) UF_REGISTER_DERIVED_NAMED(type, #type)
, - template class AutoRegistrer, - - .
UF_REGISTER_DERIVED_NAMED , AutoRegistrer.
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class Base { publi: UNIFIED_FACTORY(Base) }; class Derived1 : public Base {...} UF_REGISTER_DERIVED(Derived1) class Derived2 : public Base {...} UF_REGISTER_DERIVED(Derived2) .... Base * instance = Base::factory()->build("Derived1")
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, template registerClass(const QString& name), T - .
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#define UNIFIED_FACTORY(BaseType) \ static UnifiedFactory<BaseType>* factory() \ { \ static UnifiedFactory<BaseType> s_factory; \ return &s_factory; \ } \ template<class T> \ class AutoRegistrer \ { \ public: \ AutoRegistrer(const QString& name){factory()->registerClass<T>(name);} \ }; \ #define UF_REGISTER_DERIVED_NAMED(type, name) \ static const type::AutoRegistrer<type> type##Registrator(name); #define UF_REGISTER_DERIVED(type) UF_REGISTER_DERIVED_NAMED(type, #type)
, - template class AutoRegistrer, - - .
UF_REGISTER_DERIVED_NAMED , AutoRegistrer.
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class Base { publi: UNIFIED_FACTORY(Base) }; class Derived1 : public Base {...} UF_REGISTER_DERIVED(Derived1) class Derived2 : public Base {...} UF_REGISTER_DERIVED(Derived2) .... Base * instance = Base::factory()->build("Derived1")
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, template registerClass(const QString& name), T - .
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#define UNIFIED_FACTORY(BaseType) \ static UnifiedFactory<BaseType>* factory() \ { \ static UnifiedFactory<BaseType> s_factory; \ return &s_factory; \ } \ template<class T> \ class AutoRegistrer \ { \ public: \ AutoRegistrer(const QString& name){factory()->registerClass<T>(name);} \ }; \ #define UF_REGISTER_DERIVED_NAMED(type, name) \ static const type::AutoRegistrer<type> type##Registrator(name); #define UF_REGISTER_DERIVED(type) UF_REGISTER_DERIVED_NAMED(type, #type)
, - template class AutoRegistrer, - - .
UF_REGISTER_DERIVED_NAMED , AutoRegistrer.
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class Base { publi: UNIFIED_FACTORY(Base) }; class Derived1 : public Base {...} UF_REGISTER_DERIVED(Derived1) class Derived2 : public Base {...} UF_REGISTER_DERIVED(Derived2) .... Base * instance = Base::factory()->build("Derived1")
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, template registerClass(const QString& name), T - .
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#define UNIFIED_FACTORY(BaseType) \ static UnifiedFactory<BaseType>* factory() \ { \ static UnifiedFactory<BaseType> s_factory; \ return &s_factory; \ } \ template<class T> \ class AutoRegistrer \ { \ public: \ AutoRegistrer(const QString& name){factory()->registerClass<T>(name);} \ }; \ #define UF_REGISTER_DERIVED_NAMED(type, name) \ static const type::AutoRegistrer<type> type##Registrator(name); #define UF_REGISTER_DERIVED(type) UF_REGISTER_DERIVED_NAMED(type, #type)
, - template class AutoRegistrer, - - .
UF_REGISTER_DERIVED_NAMED , AutoRegistrer.
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class Base { publi: UNIFIED_FACTORY(Base) }; class Derived1 : public Base {...} UF_REGISTER_DERIVED(Derived1) class Derived2 : public Base {...} UF_REGISTER_DERIVED(Derived2) .... Base * instance = Base::factory()->build("Derived1")
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, template registerClass(const QString& name), T - .
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#define UNIFIED_FACTORY(BaseType) \ static UnifiedFactory<BaseType>* factory() \ { \ static UnifiedFactory<BaseType> s_factory; \ return &s_factory; \ } \ template<class T> \ class AutoRegistrer \ { \ public: \ AutoRegistrer(const QString& name){factory()->registerClass<T>(name);} \ }; \ #define UF_REGISTER_DERIVED_NAMED(type, name) \ static const type::AutoRegistrer<type> type##Registrator(name); #define UF_REGISTER_DERIVED(type) UF_REGISTER_DERIVED_NAMED(type, #type)
, - template class AutoRegistrer, - - .
UF_REGISTER_DERIVED_NAMED , AutoRegistrer.
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class Base { publi: UNIFIED_FACTORY(Base) }; class Derived1 : public Base {...} UF_REGISTER_DERIVED(Derived1) class Derived2 : public Base {...} UF_REGISTER_DERIVED(Derived2) .... Base * instance = Base::factory()->build("Derived1")
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, template registerClass(const QString& name), T - .
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#define UNIFIED_FACTORY(BaseType) \ static UnifiedFactory<BaseType>* factory() \ { \ static UnifiedFactory<BaseType> s_factory; \ return &s_factory; \ } \ template<class T> \ class AutoRegistrer \ { \ public: \ AutoRegistrer(const QString& name){factory()->registerClass<T>(name);} \ }; \ #define UF_REGISTER_DERIVED_NAMED(type, name) \ static const type::AutoRegistrer<type> type##Registrator(name); #define UF_REGISTER_DERIVED(type) UF_REGISTER_DERIVED_NAMED(type, #type)
, - template class AutoRegistrer, - - .
UF_REGISTER_DERIVED_NAMED , AutoRegistrer.
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class Base { publi: UNIFIED_FACTORY(Base) }; class Derived1 : public Base {...} UF_REGISTER_DERIVED(Derived1) class Derived2 : public Base {...} UF_REGISTER_DERIVED(Derived2) .... Base * instance = Base::factory()->build("Derived1")
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, template registerClass(const QString& name), T - .
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#define UNIFIED_FACTORY(BaseType) \ static UnifiedFactory<BaseType>* factory() \ { \ static UnifiedFactory<BaseType> s_factory; \ return &s_factory; \ } \ template<class T> \ class AutoRegistrer \ { \ public: \ AutoRegistrer(const QString& name){factory()->registerClass<T>(name);} \ }; \ #define UF_REGISTER_DERIVED_NAMED(type, name) \ static const type::AutoRegistrer<type> type##Registrator(name); #define UF_REGISTER_DERIVED(type) UF_REGISTER_DERIVED_NAMED(type, #type)
, - template class AutoRegistrer, - - .
UF_REGISTER_DERIVED_NAMED , AutoRegistrer.
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class Base { publi: UNIFIED_FACTORY(Base) }; class Derived1 : public Base {...} UF_REGISTER_DERIVED(Derived1) class Derived2 : public Base {...} UF_REGISTER_DERIVED(Derived2) .... Base * instance = Base::factory()->build("Derived1")
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, template registerClass(const QString& name), T - .
, -, BaseBuilder build() (!) Builder, .
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#define UNIFIED_FACTORY(BaseType) \ static UnifiedFactory<BaseType>* factory() \ { \ static UnifiedFactory<BaseType> s_factory; \ return &s_factory; \ } \ template<class T> \ class AutoRegistrer \ { \ public: \ AutoRegistrer(const QString& name){factory()->registerClass<T>(name);} \ }; \ #define UF_REGISTER_DERIVED_NAMED(type, name) \ static const type::AutoRegistrer<type> type##Registrator(name); #define UF_REGISTER_DERIVED(type) UF_REGISTER_DERIVED_NAMED(type, #type)
, - template class AutoRegistrer, - - .
UF_REGISTER_DERIVED_NAMED , AutoRegistrer.
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class Base { publi: UNIFIED_FACTORY(Base) }; class Derived1 : public Base {...} UF_REGISTER_DERIVED(Derived1) class Derived2 : public Base {...} UF_REGISTER_DERIVED(Derived2) .... Base * instance = Base::factory()->build("Derived1")
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