74 lines
1.9 KiB
C++
74 lines
1.9 KiB
C++
/**
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This file is a part of our_dick
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Copyright (C) 2020 rexy712
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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 Affero 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 Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef OUR_DICK_ENGINE_OBSERVABLE_HPP
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#define OUR_DICK_ENGINE_OBSERVABLE_HPP
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#include <vector>
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namespace egn{
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template<typename Event>
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class observable;
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template<typename Event>
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class observer
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{
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public:
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using event_type = Event;
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using event_ref = event_type&;
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using const_event_ref = const event_type&;
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using observed_type = observable<event_type>;
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using observed_ref = observed_type&;
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using const_observed_ref = const observed_type&;
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using observed_pointer = observed_type*;
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using const_observed_pointer = const observed_type*;
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public:
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virtual ~observer(void) = default;
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virtual void on_notify(const_event_ref e) = 0;
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};
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template<typename Event>
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class observable
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{
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public:
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using event_type = Event;
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using event_ref = event_type&;
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using const_event_ref = const event_type&;
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using observer_type = observer<event_type>;
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using observer_ref = observer_type&;
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using const_observer_ref = const observer_type&;
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using observer_pointer = observer_type*;
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using const_observer_pointer = const observer_type*;
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private:
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std::vector<observer_pointer> m_observers;
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public:
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void notify(const_event_ref e);
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void add_observer(observer_ref o);
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void remove_observer(observer_ref o);
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};
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}
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#include "observable.tpp"
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#endif
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