ToolsVariantField.h

//
// Copyright 2017 - 2025 (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 "cc_tools_qt/ToolsField.h"
 
#include <QtCore/QString>
#include <QtCore/QList>
 
#include <functional>
#include <memory>
#include <vector>
 
namespace cc_tools_qt
{
 
namespace field
{
 
class CC_TOOLS_API ToolsVariantField : public ToolsField
{
    using Base = ToolsField;
public:
    using ActPtr = std::unique_ptr<ToolsVariantField>;
 
    using MemberCreateCallbackFunc = std::function<ToolsFieldPtr ()>;
 
    ToolsVariantField();
    ToolsVariantField(const ToolsVariantField&) =delete;
    ToolsVariantField& operator=(const ToolsVariantField&) =delete;
 
    virtual ~ToolsVariantField() noexcept;
 
    ToolsField* getCurrent();
 
    const ToolsField* getCurrent() const;
 
    void setCurrent(ToolsFieldPtr current);
 
    void updateCurrent();
 
    QStringList membersNames() const;
 
    int getCurrentIndex() const;
 
    void setCurrentIndex(int index);
 
    int getMembersCount() const;
 
    template <typename TFunc>
    void setMemberCreateCallback(TFunc&& func)
    {
        m_createMemberCb = std::forward<TFunc>(func);
    }
 
    ActPtr actClone();
 
protected:
    virtual QStringList membersNamesImpl() const = 0;
    virtual void dispatchImpl(ToolsFieldHandler& handler);
    virtual int getCurrentIndexImpl() const = 0;
    virtual void setCurrentIndexImpl(int index) = 0;
    virtual int getMembersCountImpl() const = 0;
 
private:
    MemberCreateCallbackFunc m_createMemberCb;
};
 
using ToolsVariantFieldPtr = ToolsVariantField::ActPtr;
 
}  // namespace field
 
}  // namespace cc_tools_qt