viewmodeldelegate.h

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//  ************************************************************************************************
//
//  qt-mvvm: Model-view-view-model framework for large GUI applications
//
//! @file      mvvm/viewmodel/mvvm/viewmodel/viewmodeldelegate.h
//! @brief     Defines class CLASS?
//!
//! @homepage  http://www.bornagainproject.org
//! @license   GNU General Public License v3 or higher (see COPYING)
//! @copyright Forschungszentrum Jülich GmbH 2020
//! @authors   Gennady Pospelov et al, Scientific Computing Group at MLZ (see CITATION, AUTHORS)
//
//  ************************************************************************************************
 
#ifndef BORNAGAIN_MVVM_VIEWMODEL_MVVM_VIEWMODEL_VIEWMODELDELEGATE_H
#define BORNAGAIN_MVVM_VIEWMODEL_MVVM_VIEWMODEL_VIEWMODELDELEGATE_H
 
#include "mvvm/viewmodel_export.h"
#include <QStyledItemDelegate>
#include <memory>
 
namespace ModelView {
 
class EditorFactoryInterface;
class CellDecoratorInterface;
 
//! Model delegate to provide editing/painting for custom variants.
 
class MVVM_VIEWMODEL_EXPORT ViewModelDelegate : public QStyledItemDelegate {
    Q_OBJECT
 
public:
    explicit ViewModelDelegate(QObject* parent = nullptr);
    ~ViewModelDelegate() override;
 
    void setEditorFactory(std::unique_ptr<EditorFactoryInterface> editor_factory);
    void setCellDecoration(std::unique_ptr<CellDecoratorInterface> cell_decoration);
 
    QWidget* createEditor(QWidget* parent, const QStyleOptionViewItem& option,
                          const QModelIndex& index) const override;
 
    void setEditorData(QWidget* editor, const QModelIndex& index) const override;
    void setModelData(QWidget* editor, QAbstractItemModel* model,
                      const QModelIndex& index) const override;
 
    QSize sizeHint(const QStyleOptionViewItem& option, const QModelIndex& index) const override;
 
    void updateEditorGeometry(QWidget* editor, const QStyleOptionViewItem& option,
                              const QModelIndex& index) const override;
 
public slots:
    void onCustomEditorDataChanged();
 
protected:
    void initStyleOption(QStyleOptionViewItem* option, const QModelIndex& index) const override;
 
    std::unique_ptr<EditorFactoryInterface> m_editor_factory;
    std::unique_ptr<CellDecoratorInterface> m_cell_decoration;
};
 
} // namespace ModelView
 
#endif // BORNAGAIN_MVVM_VIEWMODEL_MVVM_VIEWMODEL_VIEWMODELDELEGATE_H