125 lines
3.1 KiB
C++
125 lines
3.1 KiB
C++
/*
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* Copyright (C) 2006-2016 Jacek Sieka, arnetheduck on gmail point com
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef ADCHPP_SIGNAL_H
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#define ADCHPP_SIGNAL_H
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namespace adchpp {
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struct Connection : private boost::noncopyable {
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public:
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Connection() { }
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virtual ~Connection() { }
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virtual void disconnect() = 0;
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};
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typedef std::unique_ptr<Connection> ConnectionPtr;
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template<typename F>
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class Signal {
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public:
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typedef std::function<F> Slot;
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typedef std::list<Slot> SlotList;
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typedef F FunctionType;
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template<typename T0>
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void operator()(T0&& t0) {
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for(auto i = slots.begin(), iend = slots.end(); i != iend;) {
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(*i++)(std::forward<T0>(t0));
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}
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}
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template<typename T0, typename T1>
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void operator()(T0&& t0, T1&& t1) {
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for(auto i = slots.begin(), iend = slots.end(); i != iend;) {
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(*i++)(std::forward<T0>(t0), std::forward<T1>(t1));
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}
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}
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template<typename T0, typename T1, typename T2>
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void operator()(T0&& t0, T1&& t1, T2&& t2) {
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for(auto i = slots.begin(), iend = slots.end(); i != iend;) {
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(*i++)(std::forward<T0>(t0), std::forward<T1>(t1), std::forward<T2>(t2));
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}
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}
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template<typename T>
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ConnectionPtr connect(const T& f) { return ConnectionPtr(new SlotConnection(this, slots.insert(slots.end(), f))); }
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~Signal() { }
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private:
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SlotList slots;
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void disconnect(const typename SlotList::iterator& i) {
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slots.erase(i);
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}
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struct SlotConnection : public Connection {
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SlotConnection(Signal<F>* sig_, const typename SlotList::iterator& i_) : sig(sig_), i(i_) { }
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virtual void disconnect() { if(sig) sig->disconnect(i), sig = 0; }
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Signal<F>* sig;
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typename Signal<F>::SlotList::iterator i;
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};
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};
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struct ManagedConnection : private boost::noncopyable {
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ManagedConnection(ConnectionPtr&& conn_) : conn(move(conn_)) {
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}
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void disconnect() {
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if(conn.get()) {
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conn->disconnect();
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conn.reset();
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}
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}
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void release() {
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conn.reset();
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}
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~ManagedConnection() {
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disconnect();
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}
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private:
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ConnectionPtr conn;
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};
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typedef shared_ptr<ManagedConnection> ManagedConnectionPtr;
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template<typename F1, typename F2>
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inline ManagedConnectionPtr manage(Signal<F1>* signal, const F2& f) {
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return make_shared<ManagedConnection>(signal->connect(f));
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}
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inline ManagedConnectionPtr manage(ConnectionPtr && conn) {
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return make_shared<ManagedConnection>(move(conn));
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}
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template<typename F>
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struct SignalTraits {
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typedef adchpp::Signal<F> Signal;
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typedef adchpp::ConnectionPtr Connection;
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typedef adchpp::ManagedConnectionPtr ManagedConnection;
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};
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}
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#endif // SIGNAL_H
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