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#ifndef PatternistSDK_TreeModel_H

#define PatternistSDK_TreeModel_H

#include <QAbstractItemModel>

#include <QObject>

#include <QPointer>

#include <QStringList>

#include "Global.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

namespace QPatternistSDK

{

    class TreeItem;

    /**

     * @short TreeItem is a generic QAbstractItemModel tailored for

     * representing hierarchial data.

     *

     * TreeModel is an item model in Qt's model/view framework. Its

     * data consists of TreeItem instances.

     *

     * @see TreeItem

     * @ingroup PatternistSDK

     * @author Frans Englich <frans.englich@nokia.com>

     */

    class Q_PATTERNISTSDK_EXPORT TreeModel : public QAbstractItemModel

    {

        Q_OBJECT

    public:

        TreeModel(const QStringList columnData, QObject *parent);

        virtual ~TreeModel();

        virtual QVariant data(const QModelIndex &index, int role) const;

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

        virtual QVariant headerData(int section,

                                    Qt::Orientation orientation,

                                    int role = Qt::DisplayRole) const;

        virtual QModelIndex index(int row,

                                  int column,

                                  const QModelIndex &parent = QModelIndex()) const;

        virtual QModelIndex parent(const QModelIndex &index) const;

        virtual int rowCount(const QModelIndex &parent = QModelIndex()) const;

        virtual int columnCount(const QModelIndex &parent = QModelIndex()) const;

        TreeItem *root() const;

        /**

         * Sets @p root to the new root, and deletes the old.

         */

        void setRoot(TreeItem *root);

    protected Q_SLOTS:

        void childChanged(TreeItem *child);

    private:

        QPointer<TreeItem> m_root;

        const QStringList m_columnData;

    };

}

QT_END_NAMESPACE

QT_END_HEADER

#endif

// vim: et:ts=4:sw=4:sts=4