full rework of the output order

widgets/outputcolumnmodel.h

@@ -0,0 +1,37 @@
+#ifndef OUTPUTCOLUMNMODEL_H
+#define OUTPUTCOLUMNMODEL_H
+
+#include <QLineEdit>
+#include <QAbstractListModel>
+#include <outputcolumn.h>
+
+class OutputColumnModel : public QAbstractListModel
+{
+    Q_OBJECT
+    static constexpr const char* MimeType = "application/output.column.model";
+    std::vector<OutputColumn> *columns;
+
+public:
+    OutputColumnModel(std::vector<OutputColumn> *columns, QObject *parent = nullptr);
+
+    int rowCount(const QModelIndex &parent = QModelIndex()) const override;
+    QVariant data(const QModelIndex &index, int role) const override;
+    QVariant headerData(int section, Qt::Orientation orientation,
+                        int role = Qt::DisplayRole) const override;
+
+    Qt::ItemFlags flags (const QModelIndex& index) const override;
+    bool setData(const QModelIndex &index, const QVariant &value,
+                 int role = Qt::EditRole) override;
+
+    Qt::DropActions supportedDropActions() const override;
+
+    bool insertRows(int position, int rows, const QModelIndex &index = QModelIndex()) override;
+    bool removeRows(int position, int rows, const QModelIndex &index = QModelIndex()) override;
+
+    QStringList mimeTypes() const override;
+    bool canDropMimeData(const QMimeData *, Qt::DropAction, int, int, const QModelIndex&);
+    QMimeData* mimeData(const QModelIndexList &indexes) const;
+    bool dropMimeData(const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent);
+};
+
+#endif // OUTPUTCOLUMNMODEL_H