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treemodel.h Example File
itemviews/editabletreemodel/treemodel.h

 /****************************************************************************
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 ** Copyright (C) 2005-2008 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
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 ** This file is part of the documentation of the Qt Toolkit.
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 ** contained therein.  Please consult your licensing agreement or
 ** contact [email protected] if any conditions of this licensing
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 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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 #ifndef TREEMODEL_H
 #define TREEMODEL_H

 #include <QAbstractItemModel>
 #include <QModelIndex>
 #include <QVariant>

 class TreeItem;

 class TreeModel : public QAbstractItemModel
 {
     Q_OBJECT

 public:
     TreeModel(const QStringList &headers, const QString &data,
               QObject *parent = 0);
     ~TreeModel();

     QVariant data(const QModelIndex &index, int role) const;
     QVariant headerData(int section, Qt::Orientation orientation,
                         int role = Qt::DisplayRole) const;

     QModelIndex index(int row, int column,
                       const QModelIndex &parent = QModelIndex()) const;
     QModelIndex parent(const QModelIndex &index) const;

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

     Qt::ItemFlags flags(const QModelIndex &index) const;
     bool setData(const QModelIndex &index, const QVariant &value,
                  int role = Qt::EditRole);
     bool setHeaderData(int section, Qt::Orientation orientation,
                        const QVariant &value, int role = Qt::EditRole);

     bool insertColumns(int position, int columns,
                        const QModelIndex &parent = QModelIndex());
     bool removeColumns(int position, int columns,
                        const QModelIndex &parent = QModelIndex());
     bool insertRows(int position, int rows,
                     const QModelIndex &parent = QModelIndex());
     bool removeRows(int position, int rows,
                     const QModelIndex &parent = QModelIndex());

 private:
     void setupModelData(const QStringList &lines, TreeItem *parent);
     TreeItem *getItem(const QModelIndex &index) const;

     TreeItem *rootItem;
 };

 #endif


Copyright © 2008 Nokia Corporation and/or its subsidiary(-ies) Trademarks
Qt 4.4.3