File event.h¶

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// Copyright (c) 2024, The Endstone Project. (https://endstone.dev) All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#pragma once

#include <stdexcept>
#include <string>

namespace endstone {

class Event {
public:
    explicit Event(bool async = false) : async_(async){};
    Event(const Event &) = delete;             // deleted copy constructor
    Event &operator=(const Event &) = delete;  // deleted copy assignment operator

    virtual ~Event() = default;

    [[nodiscard]] virtual std::string getEventName() const = 0;

    [[nodiscard]] bool isAsynchronous() const
    {
        return async_;
    }

private:
    [[nodiscard]] virtual bool isCancellable() const
    {
        return false;
    }

    template <class T>
    friend class Cancellable;
    friend class EventHandler;

    bool async_;
    bool cancelled_{false};
};

}  // namespace endstone