touchable.h

Go to the documentation of this file.

/*
 * Copyright (C) 1999-2015 Paul Davis <paul@linuxaudiosystems.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
#pragma once
 
#include "pbd/libpbd_visibility.h"
 
class /*LIBPBD_API*/ Touchable
{
  public:
        Touchable() : _delete_after_touch (false) {}
        virtual ~Touchable() {}
 
        void set_delete_after_touch (bool yn) { _delete_after_touch = yn; }
        bool delete_after_touch() const { return _delete_after_touch; }
 
        virtual void touch () = 0;
 
  protected:
        bool _delete_after_touch;
};
 
template<class T>
class /*LIBPBD_API*/ DynamicTouchable : public Touchable
{
  public:
        DynamicTouchable (T& t, void (T::*m)(void))
                : object (t), method (m) { set_delete_after_touch (true); }
 
        void touch () {
                (object.*method)();
        }
 
  protected:
        T& object;
        void (T::*method)(void);
};
 
template<class T1, class T2>
class /*LIBPBD_API*/ DynamicTouchable1 : public Touchable
{
  public:
        DynamicTouchable1 (T1& t, void (T1::*m)(T2), T2 a)
                : object (t), method (m), arg (a) { set_delete_after_touch (true); }
 
        void touch () {
                (object.*method)(arg);
        }
 
  protected:
        T1& object;
        void (T1::*method)(T2);
        T2 arg;
};
 
template<class T1, class T2, class T3>
class /*LIBPBD_API*/ DynamicTouchable2 : public Touchable
{
  public:
        DynamicTouchable2 (T1& t, void (T1::*m)(T2, T3), T2 a1, T3 a2)
                : object (t), method (m), arg1 (a1), arg2 (a2) { set_delete_after_touch (true); }
 
        void touch () {
                (object.*method)(arg1, arg2);
        }
 
  protected:
        T1& object;
        void (T1::*method)(T2,T3);
        T2 arg1;
        T3 arg2;
};