obs-StreamFX/source/utility/utility-event.cpp

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/*
* Modern effects for a modern Streamer
* Copyright (C) 2018 Michael Fabian Dirks
*
* 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
*/
#include "utility-event.hpp"
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utility::event::event()
{
on.add = std::make_shared<utility::event>();
on.remove = std::make_shared<utility::event>();
on.empty = std::make_shared<utility::event>();
}
utility::event::~event()
{
clear();
on.add.reset();
on.remove.reset();
on.empty.reset();
}
size_t utility::event::add(listener_t callback)
{
_listeners.push_back(callback);
{
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event_args_t args;
args.emplace("event", this);
args.emplace("listener", &callback);
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on.add->call(args);
}
return _listeners.size();
}
size_t utility::event::remove(listener_t callback)
{
_listeners.remove(callback);
{
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event_args_t args;
args.emplace("event", this);
args.emplace("listener", &callback);
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on.remove->call(args);
}
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if (_listeners.empty()) {
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event_args_t args;
args.emplace("event", this);
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on.empty->call(args);
}
return _listeners.size();
}
size_t utility::event::count()
{
return _listeners.size();
}
bool utility::event::empty()
{
return _listeners.empty();
}
void utility::event::clear()
{
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_listeners.clear();
event_args_t args;
args.emplace("event", this);
on.empty->call(args);
}
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size_t utility::event::call(event_args_t& arguments)
{
size_t idx = 0;
for (auto const& listener : _listeners) {
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/*if (listener.first.expired()) {
// Lifeline has expired, so remove it.
_listeners.remove(listener);
continue;
}*/
//if (listener.second(listener.first, arguments)) {
// break;
// }
idx++;
}
return idx;
}