event_handler.h
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/**
* \file
*
* \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 __TR_EVENT_HANDLER_H__
#define __TR_EVENT_HANDLER_H__
#include <sys/types.h>
#include "trbase.h"
#include "trdata.h"
#include "tr/event.h"
#include "tr/event_subject.h"
TR_CLASS(TR_EventHandler);
#include "tr/event_dispatcher.h"
typedef TR_EventDone (* TR_EventMethod_fptr)(void *, TR_Event);
TR_CLASS(TR_EventHandler) {
TR_EventDispatcher dispatcher[10];
size_t ndispatcher;
};
TR_INSTANCE_INIT(TR_EventHandler);
TR_CLASSVARS_DECL(TR_EventHandler) {
TR_Hash event_methods;
};
void TR_eventHandlerSetDispatcher(TR_EventHandler, TR_EventDispatcher);
int TR_eventHandlerIssueEvent(TR_EventHandler, TR_Event);
TR_EventDone TR_eventHandlerHandleEvent(TR_EventHandler, TR_Event);
#define TR_eventHandlerClassCleanup(cname) \
(TR__eventHandlerClassCleanup(TR_CLASS_BY_NAME(cname)))
void TR__eventHandlerClassCleanup(TR_class_ptr);
#define TR_EVENT_HANDLER_SET_METHOD(cls, subject, id, method) \
do { \
intptr_t key = TR_eventSubjectId(subject, id); \
TR_EventMethod_fptr event_func = (method); \
TR_hashAdd( \
TR_CLASSVARS(TR_EventHandler, cls)->event_methods, \
TR_new( \
TR_HashValue, \
&key, \
sizeof(intptr_t), \
&event_func, \
sizeof(TR_EventMethod_fptr))); \
} while(0)
#define TR_INIT_HANDLER(cname) \
TR_INSTANCE(TR_Tree, cname##EventMethodsTree, NULL); \
TR_INSTANCE(TR_Hash, cname##EventMethods, &(_##cname##EventMethodsTree.data), 0)
#define TR_HANDLER_CVARS(cname) &(_##cname##EventMethods.data)
#endif // __TR_EVENT_HANDLER_H__
// vim: set ts=4 sw=4: