Danny Robson
d6b943500c
signal will clash with the POSIX signal function. This tends to be too annoying to work around with careful inclusion orders or other namespacing.
78 lines
2.5 KiB
C++
78 lines
2.5 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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namespace util {
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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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/// Add a callback to the list.
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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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/// Disconnect all callbacks
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void clear (void)
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{ m_children.clear (); }
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/// Returns the number of callbacks connected.
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unsigned int size (void) const
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{ return m_children.size (); }
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/// Execute all callbacks, ignoring the return parameters. 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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}
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#endif // __SIGNAL_HPP
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