Jungfraujoch/viewer/widgets/JFJochViewerROIList.h

// SPDX-FileCopyrightText: 2026 Filip Leonarski, Paul Scherrer Institute <filip.leonarski@psi.ch>
// SPDX-License-Identifier: GPL-3.0-only

#pragma once

#include <memory>

#include <QWidget>
#include <QComboBox>
#include <QLineEdit>
#include <QLabel>

#include "JFJochViewerROIResult.h"
#include "../../common/ROIDefinition.h"
#include "../../reader/JFJochReaderImage.h"

// Manages the dataset's ROI list: select one, add (box/circle/azimuthal), rename or
// delete, and show the selected ROI's statistics for the current image. Edits are
// emitted as a complete ROIDefinition; the reading worker is the source of truth and
// recomputes the per-image ROI results, which arrive back via loadImage().
class JFJochViewerROIList : public QWidget {
    Q_OBJECT

    QComboBox *combo_;
    QComboBox *type_combo_;
    QLabel *flabel_[4];
    QLineEdit *fedit_[4];
    JFJochViewerROIResult *result_;

    ROIDefinition rois_;
    std::shared_ptr<const JFJochReaderImage> image_;
    bool rebuilding_ = false;

    void RebuildCombo(const QString &keep_selected);
    void UpdateEditor();   // populate the numeric fields for the selected ROI
    void ApplyEditor();    // rebuild the selected ROI from the numeric fields
    void ShowSelectedResult();
    [[nodiscard]] QString SelectedName() const;
    [[nodiscard]] std::string UniqueName() const;
public:
    explicit JFJochViewerROIList(QWidget *parent = nullptr);
public slots:
    void loadImage(std::shared_ptr<const JFJochReaderImage> image);
    void setSelected(QString name);   // select an ROI by name (e.g. clicked on the canvas)
private slots:
    void OnSelectionChanged();
    void OnAdd();
    void OnDelete();
    void OnRename();
signals:
    void roisChanged(ROIDefinition rois);
    void selectedROIChanged(QString name);
    void downloadROIs();   // fetch ROIs from the connected broker
    void uploadROIs();     // push ROIs to the connected broker
    void maskFromROI(QString name, bool add);   // add/subtract the selected ROI to/from the user mask
};