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/*
Minetest
Copyright (C) 2013 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.
*/
#pragma once
#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<MtEvent::Type, Dest> m_dest{};
public:
~EventManager() override = default;
void put(MtEvent *e) override
{
std::map<MtEvent::Type, Dest>::iterator i = m_dest.find(e->getType());
if (i != m_dest.end()) {
std::list<FuncSpec> &funcs = i->second.funcs;
for (FuncSpec &func : funcs) {
(*(func.f))(e, func.d);
}
}
delete e;
}
void reg(MtEvent::Type type, event_receive_func f, void *data) override
{
std::map<MtEvent::Type, Dest>::iterator i = m_dest.find(type);
if (i != m_dest.end()) {
i->second.funcs.emplace_back(f, data);
} else {
Dest dest;
dest.funcs.emplace_back(f, data);
m_dest[type] = dest;
}
}
void dereg(MtEvent::Type type, event_receive_func f, void *data) override
{
std::map<MtEvent::Type, Dest>::iterator i = m_dest.find(type);
if (i != m_dest.end()) {
std::list<FuncSpec> &funcs = i->second.funcs;
auto j = funcs.begin();
while (j != funcs.end()) {
bool remove = (j->f == f && (!data || j->d == data));
if (remove)
funcs.erase(j++);
else
++j;
}
}
}
};
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