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/*
* Copyright (c) 2013 Remko Tronçon
* Licensed under the GNU General Public License.
* See the COPYING file for more information.
*/
#pragma once
#include <Swiften/Base/API.h>
#include <boost/bind.hpp>
#include <algorithm>
namespace Swift {
template<typename T>
class SWIFTEN_API Listenable {
public:
void addListener(T* listener) {
listeners.push_back(listener);
}
void removeListener(T* listener) {
listeners.erase(std::remove(listeners.begin(), listeners.end(), listener), listeners.end());
}
protected:
template<typename F>
void notifyListeners(F event) {
for (typename std::vector<T*>::iterator i = listeners.begin(); i != listeners.end(); ++i) {
event(*i);
}
}
template<typename F, typename A1>
void notifyListeners(F f, const A1& a1) {
notifyListeners(boost::bind(f, _1, a1));
}
template<typename F, typename A1, typename A2>
void notifyListeners(F f, const A1& a1, const A2& a2) {
notifyListeners(boost::bind(f, _1, a1, a2));
}
template<typename F, typename A1, typename A2, typename A3>
void notifyListeners(F f, const A1& a1, const A2& a2, const A3& a3) {
notifyListeners(boost::bind(f, _1, a1, a2, a3));
}
private:
std::vector<T*> listeners;
};
}
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Swift