mirror of https://github.com/polybar/polybar.git
53 lines
1.2 KiB
C++
53 lines
1.2 KiB
C++
#pragma once
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#include <map>
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#include <typeindex>
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#include <typeinfo>
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#include <unordered_map>
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#include "common.hpp"
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POLYBAR_NS
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class signal_receiver_interface {
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public:
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using prio = int;
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using prio_map = std::multimap<prio, signal_receiver_interface*>;
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virtual ~signal_receiver_interface() {}
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virtual prio priority() const = 0;
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template <typename Signal>
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bool on(const Signal& signal);
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};
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template <typename Signal>
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class signal_receiver_impl {
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public:
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virtual ~signal_receiver_impl() {}
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virtual bool on(const Signal&) = 0;
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};
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template <typename Signal>
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bool signal_receiver_interface::on(const Signal& s) {
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auto event_sink = dynamic_cast<signal_receiver_impl<Signal>*>(this);
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if (event_sink != nullptr && event_sink->on(s)) {
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return true;
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} else {
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return false;
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}
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}
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template <int Priority, typename Signal, typename... Signals>
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class signal_receiver : public signal_receiver_interface,
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public signal_receiver_impl<Signal>,
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public signal_receiver_impl<Signals>... {
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public:
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prio priority() const override {
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return Priority;
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}
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};
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using signal_receivers_t = std::unordered_map<std::type_index, signal_receiver_interface::prio_map>;
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POLYBAR_NS_END
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