Qt 4.8: treemodel.h Example File (itemviews/editabletreemodel/treemodel.h)

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# treemodel.h Example File

itemviews/editabletreemodel/treemodel.h

     /****************************************************************************
     **
     ** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
     ** Contact: http://www.qt-project.org/legal
     **
     ** This file is part of the examples of the Qt Toolkit.
     **
     ** $QT_BEGIN_LICENSE:BSD$
     ** You may use this file under the terms of the BSD license as follows:
     **
     ** "Redistribution and use in source and binary forms, with or without
     ** modification, are permitted provided that the following conditions are
     ** met:
     **   * Redistributions of source code must retain the above copyright
     **     notice, this list of conditions and the following disclaimer.
     **   * Redistributions in binary form must reproduce the above copyright
     **     notice, this list of conditions and the following disclaimer in
     **     the documentation and/or other materials provided with the
     **     distribution.
     **   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
     **     of its contributors may be used to endorse or promote products derived
     **     from this software without specific prior written permission.
     **
     **
     ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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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