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/*
* Copyright (C) 2001-2019 Jacek Sieka, arnetheduck on gmail point com
*
* 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, see <https://www.gnu.org/licenses/>.
*/
#pragma once
#include <utility>
#include <vector>
#include "CriticalSection.h"
namespace dcpp {
using std::forward;
using std::vector;
using std::find;
template<typename Listener>
class Speaker {
typedef vector<Listener*> ListenerList;
public:
Speaker() noexcept { }
virtual ~Speaker() { }
template<typename... T>
void fire(T&&... type) noexcept {
Lock l(listenerCS);
tmp = listeners;
for(auto i: tmp) {
i->on(std::forward<T>(type)...);
}
}
void addListener(Listener* aListener) {
Lock l(listenerCS);
if(find(listeners.begin(), listeners.end(), aListener) == listeners.end())
listeners.push_back(aListener);
}
void removeListener(Listener* aListener) {
Lock l(listenerCS);
auto it = find(listeners.begin(), listeners.end(), aListener);
if(it != listeners.end())
listeners.erase(it);
}
void removeListeners() {
Lock l(listenerCS);
listeners.clear();
}
protected:
ListenerList listeners;
ListenerList tmp;
CriticalSection listenerCS;
};
} // namespace dcpp
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