dialog_with_itemlist.h

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#ifndef DIALOG_WITH_ITEMLIST_H
#define DIALOG_WITH_ITEMLIST_H

#include <QDialog>
#include <QLabel>
#include <QListWidget>
#include <QAbstractButton>
#include <unordered_set>

#include "ui_dialog_with_itemlist.h"

namespace Ui {
class DialogWithItemList;
}

class DialogWithItemList : public QDialog
{
    Q_OBJECT
private:
    Ui::DialogWithItemList *ui;

public:
    explicit DialogWithItemList(QWidget *parent, QString title, QString text,
                                std::unordered_set<std::string> list) :
        QDialog(parent),
        ui(new Ui::DialogWithItemList)
    {
        QStringList name_list;
        for(auto& name: list)
        {
            name_list.push_back( name.c_str() );
        }

        ui->setupUi(this);
        this->setWindowTitle(title);
        ui->label->setText(text);
        ui->listWidget->addItems(name_list);
        ui->listWidget->sortItems();
    }
    ~DialogWithItemList()
    {
        delete ui;
    }

    static void warning(const QString& message, std::unordered_set<std::string> list)
    {
      auto dialog = new DialogWithItemList(0, tr("Warning"), message, list );
      dialog->exec();
      dialog->deleteLater();
    }

private slots:
    void on_buttonBox_clicked(QAbstractButton *button)
    {
        this->close();
    }
};

#endif // DIALOG_WITH_ITEMLIST_H