00001 // @(#)root/meta:$Id: TToggle.h 28005 2009-03-31 13:12:24Z brun $ 00002 // Author: Piotr Golonka 30/07/97 00003 00004 /************************************************************************* 00005 * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. * 00006 * All rights reserved. * 00007 * * 00008 * For the licensing terms see $ROOTSYS/LICENSE. * 00009 * For the list of contributors see $ROOTSYS/README/CREDITS. * 00010 *************************************************************************/ 00011 00012 #ifndef ROOT_TToggle 00013 #define ROOT_TToggle 00014 00015 00016 ////////////////////////////////////////////////////////////////////////// 00017 // // 00018 // TToggle // 00019 // // 00020 // This class defines toggling facility for both - object's method or // 00021 // variables. // 00022 // Assume that user provides an object with a two-state field, and // 00023 // methods to Get/Set value of this field. This object enables to switch// 00024 // values via this method when the only thing you know about the field // 00025 // is the name of the method (or method itself) which sets the field. // 00026 // This facility is required in context popup menu, when the only // 00027 // information about how to toggle a field is a name of method which // 00028 // sets it. // 00029 // This Object may be also used for toggling an integer variable, // 00030 // which may be important while building universal objects... // 00031 // When user provides a "set-method" of name SetXXX this object tries // 00032 // automaticaly to find a matching "get-method" by looking for a method // 00033 // with name GetXXX or IsXXX for given object. // 00034 // // 00035 ////////////////////////////////////////////////////////////////////////// 00036 00037 #ifndef ROOT_TObject 00038 #include "TObject.h" 00039 #endif 00040 #ifndef ROOT_TMethodCall 00041 #include "TMethodCall.h" 00042 #endif 00043 #ifndef ROOT_TMethod 00044 #include "TMethod.h" 00045 #endif 00046 #ifndef ROOT_TNamed 00047 #include "TNamed.h" 00048 #endif 00049 00050 00051 class TToggle: public TNamed { 00052 00053 private: 00054 Bool_t fState; //Object's state - "a local copy" 00055 Long_t fOnValue; //Value recognized as switched ON (Def=1) 00056 Long_t fOffValue; //Value recognized as switched OFF(Def=0) 00057 Long_t fValue; //Local copy of a value returned by called function 00058 00059 protected: 00060 Bool_t fInitialized; //True if either SetToggledObject or SetToggledVariable called - enables Toggle() method. 00061 TObject *fObject; //The object this Toggle belongs to 00062 TMethodCall *fGetter; //Method to Get a value of fObject; 00063 TMethodCall *fSetter; //Method to Set a value of fObject; 00064 00065 Int_t *fTglVariable; //Alternatively: pointer to an integer value to be Toggled instead of TObjectl 00066 00067 public: 00068 TToggle(); 00069 virtual void SetToggledObject(TObject *obj, TMethod *anymethod); 00070 00071 // you just provide any method which has got an initialized pointer 00072 // to TDataMember... The rest is done automatically... 00073 00074 virtual void SetToggledVariable(Int_t &var); 00075 00076 virtual Bool_t IsInitialized(){return fInitialized;}; 00077 00078 virtual Bool_t GetState(); 00079 virtual void SetState(Bool_t state); 00080 virtual void Toggle(); 00081 00082 virtual void SetOnValue(Long_t lon){fOnValue=lon;}; 00083 virtual Long_t GetOnValue(){return fOnValue;}; 00084 virtual void SetOffValue(Long_t lof){fOffValue=lof;}; 00085 virtual Long_t GetOffValue(){return fOffValue;}; 00086 00087 virtual Int_t GetValue(){return fValue;}; 00088 virtual void SetValue(Long_t val); 00089 00090 TMethodCall *GetGetter() const { return fGetter; } 00091 TMethodCall *GetSetter() const { return fSetter; } 00092 00093 ClassDef(TToggle,0) //Facility for toggling datamembers on/off 00094 }; 00095 00096 #endif
1.5.1