You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
74 lines
1.8 KiB
74 lines
1.8 KiB
/**
|
|
* \file
|
|
* Definition of the subject pattern implementation.
|
|
*
|
|
* \author Georg Hopp
|
|
*
|
|
* \copyright
|
|
* Copyright © 2014 Georg Hopp
|
|
*
|
|
* 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 3 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, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#ifndef __SUBJECT_H__
|
|
#define __SUBJECT_H__
|
|
|
|
#include "tr/interface.h"
|
|
|
|
|
|
typedef void (* fptr_subjectAttach)(void *, void *);
|
|
typedef void (* fptr_subjectDetach)(void *, void *);
|
|
typedef void (* fptr_subjectNotify)(void *);
|
|
|
|
TR_INTERFACE(TR_Subject) {
|
|
TR_IFID;
|
|
fptr_subjectAttach attach;
|
|
fptr_subjectDetach detach;
|
|
fptr_subjectNotify notify;
|
|
};
|
|
|
|
/**
|
|
* Attach an observer to a subject. After a successfull
|
|
* call to this the subject will inform the observer about events.
|
|
*/
|
|
inline
|
|
void
|
|
TR_subjectAttach(void * subject, void * observer)
|
|
{
|
|
TR_CALL(subject, TR_Subject, attach, observer);
|
|
}
|
|
|
|
/**
|
|
* Detach an Observer from a Subject. After this no events
|
|
* will be propagated from the subject to the observer anymore.
|
|
*/
|
|
inline
|
|
void
|
|
TR_subjectDetach(void * subject, void * observer)
|
|
{
|
|
TR_CALL(subject, TR_Subject, detach, observer);
|
|
}
|
|
|
|
/**
|
|
* Trigger the a notification of all attached observers.
|
|
*/
|
|
inline
|
|
void
|
|
TR_subjectNotify(void * subject)
|
|
{
|
|
TR_CALL(subject, TR_Subject, notify);
|
|
}
|
|
|
|
#endif // __SUBJECT_H__
|
|
|
|
// vim: set ts=4 sw=4:
|