OptionalWrapper.h

//
// Copyright 2015 - 2024 (C). Alex Robenko. All rights reserved.
//
 
// This file 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, either version 3 of the License, or
// (at your option) any later version.
//
// 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.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 
#pragma once
 
#include <memory>
#include <cassert>
 
#include "comms/field/Optional.h"
#include "FieldWrapper.h"
 
namespace cc_tools_qt
{
 
namespace field_wrapper
{
 
class CC_API OptionalWrapper : public FieldWrapper
{
public:
    typedef std::unique_ptr<OptionalWrapper> Ptr;
    typedef comms::field::OptionalMode Mode;
 
    OptionalWrapper();
    virtual ~OptionalWrapper() noexcept;
 
    Mode getMode() const;
 
    void setMode(Mode mode);
 
    bool hasFieldWrapper() const;
 
    FieldWrapper& getFieldWrapper();
 
    const FieldWrapper& getFieldWrapper() const;
 
    void setFieldWrapper(FieldWrapperPtr fieldWrapper);
 
    Ptr clone();
 
protected:
    virtual Mode getModeImpl() const = 0;
    virtual void setModeImpl(Mode mode) = 0;
    virtual Ptr cloneImpl() = 0;
 
    void dispatchImpl(FieldWrapperHandler& handler);
 
private:
    FieldWrapperPtr m_fieldWrapper;
};
 
template <typename TField>
class OptionalWrapperT : public FieldWrapperT<OptionalWrapper, TField>
{
    typedef FieldWrapperT<OptionalWrapper, TField> Base;
public:
 
    typedef typename Base::Mode Mode;
    typedef typename Base::Ptr Ptr;
 
    typedef TField Field;
    explicit OptionalWrapperT(Field& fieldRef)
      : Base(fieldRef)
    {
    }
 
protected:
    virtual Mode getModeImpl() const override
    {
        return Base::field().getMode();
    }
 
    virtual void setModeImpl(Mode mode) override
    {
        Base::field().setMode(mode);
    }
 
    virtual Ptr cloneImpl() override
    {
        return Ptr(new OptionalWrapperT<TField>(Base::field()));
    }
};
 
using OptionalWrapperPtr = OptionalWrapper::Ptr;
 
template <typename TField>
OptionalWrapperPtr
makeOptionalWrapper(TField& field)
{
    return
        OptionalWrapperPtr(
            new OptionalWrapperT<TField>(field));
}
 
 
}  // namespace field_wrapper
 
}  // namespace cc_tools_qt