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/*
Minetest
Copyright (C) 2012 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser 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.
*/
#ifndef EVENT_MANAGER_HEADER
#define EVENT_MANAGER_HEADER
#include "event.h"
#include <list>
#include <map>
class EventManager: public MtEventManager
{
static void receiverReceive(MtEvent *e, void *data)
{
MtEventReceiver *r = (MtEventReceiver*)data;
r->onEvent(e);
}
struct FuncSpec{
event_receive_func f;
void *d;
FuncSpec(event_receive_func f, void *d):
f(f), d(d)
{}
};
struct Dest{
std::list<FuncSpec> funcs;
};
std::map<std::string, Dest> m_dest;
public:
~EventManager()
{
}
void put(MtEvent *e)
{
std::map<std::string, Dest>::iterator i = m_dest.find(e->getType());
if(i != m_dest.end()){
std::list<FuncSpec> &funcs = i->second.funcs;
for(std::list<FuncSpec>::iterator i = funcs.begin();
i != funcs.end(); i++){
(*(i->f))(e, i->d);
}
}
delete e;
}
void reg(const char *type, event_receive_func f, void *data)
{
std::map<std::string, Dest>::iterator i = m_dest.find(type);
if(i != m_dest.end()){
i->second.funcs.push_back(FuncSpec(f, data));
} else{
std::list<FuncSpec> funcs;
Dest dest;
dest.funcs.push_back(FuncSpec(f, data));
m_dest[type] = dest;
}
}
void dereg(const char *type, event_receive_func f, void *data)
{
if(type != NULL){
std::map<std::string, Dest>::iterator i = m_dest.find(type);
if(i != m_dest.end()){
std::list<FuncSpec> &funcs = i->second.funcs;
std::list<FuncSpec>::iterator j = funcs.begin();
while(j != funcs.end()){
bool remove = (j->f == f && (!data || j->d == data));
if(remove)
funcs.erase(j++);
else
j++;
}
}
} else{
for(std::map<std::string, Dest>::iterator
i = m_dest.begin(); i != m_dest.end(); i++){
std::list<FuncSpec> &funcs = i->second.funcs;
std::list<FuncSpec>::iterator j = funcs.begin();
while(j != funcs.end()){
bool remove = (j->f == f && (!data || j->d == data));
if(remove)
funcs.erase(j++);
else
j++;
}
}
}
}
void reg(MtEventReceiver *r, const char *type)
{
reg(type, EventManager::receiverReceive, r);
}
void dereg(MtEventReceiver *r, const char *type)
{
dereg(type, EventManager::receiverReceive, r);
}
};
#endif
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