/****************************************************************************
** Copyright (c) 2021, Fougue Ltd. <http://www.fougue.pro>
** All rights reserved.
** See license at https://github.com/fougue/mayo/blob/master/LICENSE.txt
****************************************************************************/

#pragma once

#include "property_editor_factory.h"
#include "../base/unit.h"
#include <QtWidgets/QStyledItemDelegate>
#include <memory>
#include <unordered_map>

namespace Mayo {

class BasePropertyQuantity;

// Provides an ItemView delegate specialized to display/edit Property objects
class PropertyItemDelegate : public QStyledItemDelegate {
    Q_OBJECT
public:
    PropertyItemDelegate(QObject* parent = nullptr);

    double rowHeightFactor() const { return m_rowHeightFactor; }
    void setRowHeightFactor(double v) { m_rowHeightFactor = v; }

    IPropertyEditorFactory* editorFactory() const { return m_editorFactory.get(); }
    void setPropertyEditorFactory(std::unique_ptr<IPropertyEditorFactory> editorFactory);

    struct UnitTranslation {
        Unit unit;
        const char* strUnit; // UTF8
        double factor;
    };
    bool overridePropertyUnitTranslation(const BasePropertyQuantity* prop, UnitTranslation unitTr);

    void paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const override;

    QString displayText(const QVariant& value, const QLocale&) const override;

    QWidget* createEditor(QWidget* parent, const QStyleOptionViewItem&, const QModelIndex& index) const override;

    void setModelData(QWidget*, QAbstractItemModel*, const QModelIndex&) const override;

    QSize sizeHint(const QStyleOptionViewItem& option, const QModelIndex& index) const override;

private:
    std::unique_ptr<IPropertyEditorFactory> m_editorFactory;
    double m_rowHeightFactor = 1.;
    std::unordered_map<const BasePropertyQuantity*, UnitTranslation> m_mapPropUnitTr;
};

} // namespace Mayo