src/FbTk/MemFun.hh (raw)
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// MemFun.hh for FbTk, Fluxbox Toolkit // Copyright (c) 2008 Henrik Kinnunen (fluxgen at fluxbox dot org) // // Permission is hereby granted, free of charge, to any person obtaining a // copy of this software and associated documentation files (the "Software"), // to deal in the Software without restriction, including without limitation // the rights to use, copy, modify, merge, publish, distribute, sublicense, // and/or sell copies of the Software, and to permit persons to whom the // Software is furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER // DEALINGS IN THE SOFTWARE. #ifndef FBTK_MEM_FUN_HH #define FBTK_MEM_FUN_HH namespace FbTk { /// No argument functor template <typename ReturnType, typename Object> class MemFun0 { public: typedef ReturnType (Object:: *Action)(); MemFun0(Object& obj, Action action): m_obj(obj), m_action(action) { } void operator ()() { (m_obj.*m_action)(); } private: Object& m_obj; Action m_action; }; template <typename ReturnType, typename Object> MemFun0<ReturnType, Object> MemFun( Object& obj, ReturnType (Object:: *action)() ) { return MemFun0<ReturnType, Object>(obj, action); } /// One argument functor template <typename ReturnType, typename Object, typename Arg1> class MemFun1 { public: typedef ReturnType (Object:: *Action)(Arg1); MemFun1(Object& obj, Action action): m_obj(obj), m_action(action) { } void operator ()(Arg1 arg1) { (m_obj.*m_action)(arg1); } private: Object& m_obj; Action m_action; }; /// One argument functor helper function template <typename ReturnType, typename Object, typename Arg1> MemFun1<ReturnType, Object, Arg1> MemFun( Object& obj, ReturnType (Object:: *action)(Arg1) ) { return MemFun1<ReturnType, Object, Arg1>(obj, action); } /// Two argument functor template <typename ReturnType, typename Object, typename Arg1, typename Arg2> class MemFun2 { public: typedef ReturnType (Object:: *Action)(Arg1,Arg2); MemFun2(Object& obj, Action action): m_obj(obj), m_action(action) { } void operator ()(Arg1 arg1, Arg2 arg2) { (m_obj.*m_action)(arg1, arg2); } private: Object& m_obj; Action m_action; }; /// Two argument functor helper function template <typename ReturnType, typename Object, typename Arg1, typename Arg2> MemFun2<ReturnType, Object, Arg1, Arg2> MemFun( Object& obj, ReturnType (Object:: *action)(Arg1,Arg2) ) { return MemFun2<ReturnType, Object, Arg1, Arg2>(obj, action); } /// Three argument functor template <typename ReturnType, typename Object, typename Arg1, typename Arg2, typename Arg3> class MemFun3 { public: typedef ReturnType (Object:: *Action)(Arg1,Arg2,Arg3); MemFun3(Object& obj, Action action): m_obj(obj), m_action(action) { } void operator ()(Arg1 arg1, Arg2 arg2, Arg3 arg3) { (m_obj.*m_action)(arg1, arg2, arg3); } private: Object& m_obj; Action m_action; }; /// Three argument functor helper template <typename ReturnType, typename Object, typename Arg1, typename Arg2, typename Arg3> MemFun3<ReturnType, Object, Arg1, Arg2, Arg3> MemFun( Object& obj, ReturnType (Object:: *action)(Arg1, Arg2, Arg3) ) { return MemFun3<ReturnType, Object, Arg1, Arg2, Arg3>(obj, action); } } // namespace FbTk #endif // FBTK_MEM_FUN_HH |