71 lines
2.2 KiB
C++
71 lines
2.2 KiB
C++
/*
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* This file is part of libgim.
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*
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* libgim is free software: you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option) any later
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* version.
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*
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* libgim is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* 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 libgim. If not, see <http://www.gnu.org/licenses/>.
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*
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* Copyright 2011 Danny Robson <danny@blubinc.net>
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*/
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#ifndef __SIGNAL_HPP
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#define __SIGNAL_HPP
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#include <algorithm>
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#include <vector>
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#include <functional>
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template <typename Ret, typename ...Args>
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class signal {
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public:
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typedef Ret (*callback_function)(Args...);
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typedef std::function<Ret(Args...)> callback_object;
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protected:
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std::vector<callback_object> m_children;
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public:
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signal ()
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{ m_children.reserve (16); }
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/// Add a callback to list.
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void connect (callback_object _cb)
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{ m_children.push_back (_cb); }
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void connect (callback_function _cb)
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{ m_children.push_back (_cb); }
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/// Remove all instances of callback `cb'
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void disconnect (callback_function _cb)
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{ disconnect (callback_object (_cb)); }
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/// Remove all instances of callback `cb'
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void disconnect (callback_object _cb) {
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m_children.erase (std::remove (m_children.begin (),
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m_children.end (),
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_cb),
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m_children.end ());
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}
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/// Remove all callbacks
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void clear (void)
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{ m_children.clear (); }
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/// Execute all callbacks. Does not combine results.
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void operator () (Args&... tail) {
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for (auto i = m_children.begin (), end = m_children.end (); i != end; ++i)
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(*i)(tail...);
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}
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};
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#endif // __SIGNAL_HPP
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