#ifndef DATA_MODEL_H
#define DATA_MODEL_H

#include <QAbstractItemModel>
#include <QDomElement>

#include "core_global.h"

#include "core/gtl_device.h"

namespace gtl
{
    class CORE_EXPORT data_model : public QAbstractItemModel
    {
        Q_OBJECT

    public:
        explicit data_model(QObject *parent = nullptr);

        // Header:
        QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const override;

        // Basic functionality:
        QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const override;
        QModelIndex parent(const QModelIndex &index) const override;

        QModelIndex index(data_model_node* node);
        QModelIndex parent(data_model_node* node);

        int rowCount(const QModelIndex &parent = QModelIndex()) const override;
        int columnCount(const QModelIndex &parent = QModelIndex()) const override;

        QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
        bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole) override;

        virtual Qt::ItemFlags flags(const QModelIndex &index) const override;

        void clear();

        void add_device(device *d);


        gtl::data_model_node* node(QString path) const;

        int index_of(data_model_node* node) const;
        gtl::data_model_node* node(const QModelIndex& index) const;

        virtual void save(QDomElement& root_element);
        virtual void load(const QDomElement& root_element);

    private:
        std::vector<gtl::device*> _devices;

    public slots:
        void remove(gtl::data_model_node* node);

    private slots:
        void begin_add_children(gtl::data_model_node* parent, int begin, int end);
        void end_add_children();

        void begin_remove_children(gtl::data_model_node* parent, int begin, int end);
        void end_remove_children();

        void deleting_device();
        void node_name_changed(data_model_node *node);



    signals:
        gtl::data_model_node* create_node(gtl::data_model_node* parent, QDomElement& node_element);
    };
}

#endif // DATA_MODEL_H