75 lines
2.1 KiB
C++
75 lines
2.1 KiB
C++
/*
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DingusPPC - The Experimental PowerPC Macintosh emulator
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Copyright (C) 2018-23 divingkatae and maximum
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(theweirdo) spatium
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(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
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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 3 of the License, or
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(at your option) any later version.
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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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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/** Poor man's signals & slots mechanism implementation. */
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// Inspired by http://schneegans.github.io/tutorials/2015/09/20/signal-slot
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#ifndef CORE_SIGNAL_H
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#define CORE_SIGNAL_H
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#include <functional>
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#include <map>
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template <typename... Args>
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class CoreSignal {
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public:
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CoreSignal() = default;
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~CoreSignal() = default;
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// Connects a std::function type slot to the signal.
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// The return value can be used to disconnect the slot.
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int connect_func(std::function<void(Args...)> const& slot) const {
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_slots.insert(std::make_pair(++_current_id, slot));
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return _current_id;
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}
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// Connects a class method type slot to the signal.
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// The return value can be used to disconnect the slot.
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template <typename T>
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int connect_method(T *inst, void (T::*func)(Args...)) {
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return connect_func([=](Args... args) {
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(inst->*func)(args...);
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});
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}
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// Calls all connected slots.
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void emit(Args... args) {
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for (auto const& it : _slots) {
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it.second(args...);
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}
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}
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void disconnect(int id) {
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_slots.erase(id);
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}
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void disconnect_all() {
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_slots.clear();
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}
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private:
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mutable std::map<int, std::function<void(Args...)>> _slots;
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mutable unsigned int _current_id { 0 };
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};
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#endif // CORE_SIGNAL_H
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