event.hpp

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/* 
 * This file is part of PLaSK (https://plask.app) by Photonics Group at TUL
 * Copyright (c) 2022 Lodz University of Technology
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, version 3.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 */
#ifndef PLASK__UTILS_EVENT_H
#define PLASK__UTILS_EVENT_H
 
namespace plask {
 
template <typename SourceType, typename _FlagsType = unsigned char>
class EventWithSourceAndFlags {
 
    SourceType* _source;
 
    _FlagsType _flags;
 
public:
 
    typedef _FlagsType FlagsType;
 
    const SourceType* source() const { return _source; }
 
    SourceType* source() { return _source; }
 
    template <typename T>
    const T* source() const { 
        const T* casted = dynamic_cast<const T*>(_source);
        if (!casted && _source) throw std::bad_cast();
        return casted;
    }
 
    template <typename T>
    T* source() {
        T* casted = dynamic_cast<T*>(_source);
        if (!casted && _source) throw std::bad_cast();
        return casted;
    }
 
    FlagsType flags() const { return _flags; }
 
    FlagsType flagsWithout(FlagsType flagsToRemove) const { return _flags & ~flagsToRemove; }
 
    bool hasAllFlags(FlagsType flags) const { return (_flags & flags) == flags; }
 
    bool hasAnyFlag(FlagsType flags) const { return (_flags & flags) != 0; }
 
    explicit EventWithSourceAndFlags(SourceType* source, FlagsType flags = 0): _source(source), _flags(flags) {}
 
    virtual ~EventWithSourceAndFlags() {}
 
};
 
}   // namespace plask
 
#endif // PLASK__UTILS_EVENT_H