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//
//  uifunctor.h
//  Wablet
//
//  Created by Robert Tubb on 22/03/2012.
//  Copyright (c) 2012 __MyCompanyName__. All rights reserved.
//

#ifndef Wablet_uifunctor_h
#define Wablet_uifunctor_h

//------------------- callback functor

// abstract base class
class UIFunctor
{
public:
    
    // two possible functions to call member function. virtual cause derived
    // classes will use a pointer to an object and a pointer to a member function
    // to make the function call
    virtual void operator()(int buttID)=0;  // call using operator
    virtual void Call(int buttID)=0;        // call using function
};


// derived template class - this one is for memeber of testApp class
template <class testApp> class UISpecificFunctor : public UIFunctor
{
private:
    void (testApp::*fpt)(int);   // pointer to member function
    testApp* pt2Object;                  // pointer to object
    
public:
    
    // constructor - takes pointer to an object and pointer to a member and stores
    // them in two private variables
    
    UISpecificFunctor( testApp* _pt2Object, void(testApp::*_fpt)(int))
    { 
        pt2Object = _pt2Object;  
        fpt=_fpt; 
    };
    
    // override operator "()"
    
    virtual void operator()(int buttID)
    { (*pt2Object.*fpt)(buttID);};              // execute member function
    
    // override function "Call"
    virtual void Call(int buttID)
    { (*pt2Object.*fpt)(buttID);};             // execute member function
};


#endif