prodejna/core/autotablemodel.h

#ifndef ODBTABLEMODEL_H
#define ODBTABLEMODEL_H

#include <QAbstractTableModel>
#include <QSharedPointer>
#include <QMetaProperty>
#include <QModelIndex>

template<class T>
class AutoTableModel : public QAbstractTableModel
{

public:
    explicit AutoTableModel(QObject *parent = NULL)
        :QAbstractTableModel(parent)
    {
    }

    virtual ~AutoTableModel() {}

    // QAbstractItemModel interface
public:
    int rowCount(const QModelIndex &parent = QModelIndex()) const
    {
        return m_list.size();
    }

    int columnCount(const QModelIndex &parent = QModelIndex()) const
    {
        if (m_list.isEmpty())
        {
            return 0;
        }

        QSharedPointer<T> entity = m_list.at(0);
        QObject *rawEntity = (QObject*)entity.data();

        return rawEntity->metaObject()->propertyCount() - 1;
    }

    QVariant data(const QModelIndex &index, int role) const
    {
        if (role == Qt::DisplayRole)
        {
            QSharedPointer<T> entity = m_list.at(index.row());
            QObject *rawEntity = (QObject*)entity.data();

            return rawEntity->property(rawEntity->metaObject()->property(index.column() + 1).name());
        }

        return QVariant::Invalid;
    }

    QList<QSharedPointer<T> > list()
    {
        return m_list;
    }

    // QAbstractItemModel interface
public:
    QSharedPointer<T> itemFromIndex(const QModelIndex &index) const
    {
        return m_list.at(index.row());
    }

    void setItemToIndex(const QModelIndex &index, QSharedPointer<T> data)
    {
        m_list.removeAt(index.row());
        m_list.insert(index.row(), data);

        emit dataChanged(index, index);
    }

    void addRow(QSharedPointer<T> data)
    {
        beginInsertRows(QModelIndex(), rowCount() - 1, rowCount() - 1);
        insertRow(rowCount());
        m_list.append(data);
        endInsertRows();
    }

    void removeRowAt(const QModelIndex &index)
    {
        beginRemoveRows(QModelIndex(), index.row(), index.row());
        removeRow(index.row());
        m_list.removeAt(index.row());
        endRemoveRows();
    }

    void setData(QList<QSharedPointer<T> > list)
    {
        m_list = list;
    }

private:

    QList<QSharedPointer<T> > m_list;
};

#endif // ODBTABLEMODEL_H