selectablecomboboxeditor.h

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//  ************************************************************************************************
//
//  qt-mvvm: Model-view-view-model framework for large GUI applications
//
//! @file      mvvm/viewmodel/mvvm/editors/selectablecomboboxeditor.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_EDITORS_SELECTABLECOMBOBOXEDITOR_H
#define BORNAGAIN_MVVM_VIEWMODEL_MVVM_EDITORS_SELECTABLECOMBOBOXEDITOR_H
 
#include "mvvm/editors/customeditor.h"
 
class QComboBox;
class QStandardItemModel;
 
namespace ModelView {
 
class WheelEventFilter;
 
//! Adds multi-selection capabilities to QComboBox.
 
class MVVM_VIEWMODEL_EXPORT SelectableComboBoxEditor : public CustomEditor {
    Q_OBJECT
 
public:
    explicit SelectableComboBoxEditor(QWidget* parent = nullptr);
 
    QSize sizeHint() const override;
    QSize minimumSizeHint() const override;
 
    bool is_persistent() const override;
 
protected slots:
    void onModelDataChanged(const QModelIndex&, const QModelIndex&, const QVector<int>&);
 
    void onClickedList(const QModelIndex& index);
 
protected:
    void update_components() override;
 
private:
    bool eventFilter(QObject* obj, QEvent* event) override;
    void setConnected(bool isConnected);
    void updateBoxLabel();
 
    bool isClickToSelect(QObject* obj, QEvent* event) const;
    bool isClickToExpand(QObject* obj, QEvent* event) const;
 
    QComboBox* m_box{nullptr};
    WheelEventFilter* m_wheelEventFilter{nullptr};
    QStandardItemModel* m_model{nullptr};
};
 
} // namespace ModelView
 
#endif // BORNAGAIN_MVVM_VIEWMODEL_MVVM_EDITORS_SELECTABLECOMBOBOXEDITOR_H