tablemodel.cpp Example File

 /****************************************************************************
 **
 ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
 ** 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 Nokia Corporation 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
 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #include "tablemodel.h"

 TableModel::TableModel(QObject *parent)
     : QAbstractTableModel(parent)
 {
 }

 TableModel::TableModel(QList< QPair<QString, QString> > pairs, QObject *parent)
     : QAbstractTableModel(parent)
 {
     listOfPairs=pairs;
 }

 int TableModel::rowCount(const QModelIndex &parent) const
 {
     Q_UNUSED(parent);
     return listOfPairs.size();
 }

 int TableModel::columnCount(const QModelIndex &parent) const
 {
     Q_UNUSED(parent);
     return 2;
 }

 QVariant TableModel::data(const QModelIndex &index, int role) const
 {
     if (!index.isValid())
         return QVariant();

     if (index.row() >= listOfPairs.size() || index.row() < 0)
         return QVariant();

     if (role == Qt::DisplayRole) {
         QPair<QString, QString> pair = listOfPairs.at(index.row());

         if (index.column() == 0)
             return pair.first;
         else if (index.column() == 1)
             return pair.second;
     }
     return QVariant();
 }

 QVariant TableModel::headerData(int section, Qt::Orientation orientation, int role) const
 {
     if (role != Qt::DisplayRole)
         return QVariant();

     if (orientation == Qt::Horizontal) {
         switch (section) {
             case 0:
                 return tr("Name");

             case 1:
                 return tr("Address");

             default:
                 return QVariant();
         }
     }
     return QVariant();
 }

 bool TableModel::insertRows(int position, int rows, const QModelIndex &index)
 {
     Q_UNUSED(index);
     beginInsertRows(QModelIndex(), position, position+rows-1);

     for (int row=0; row < rows; row++) {
         QPair<QString, QString> pair(" ", " ");
         listOfPairs.insert(position, pair);
     }

     endInsertRows();
     return true;
 }

 bool TableModel::removeRows(int position, int rows, const QModelIndex &index)
 {
     Q_UNUSED(index);
     beginRemoveRows(QModelIndex(), position, position+rows-1);

     for (int row=0; row < rows; ++row) {
         listOfPairs.removeAt(position);
     }

     endRemoveRows();
     return true;
 }

 bool TableModel::setData(const QModelIndex &index, const QVariant &value, int role)
 {
     if (index.isValid() && role == Qt::EditRole) {
         int row = index.row();

         QPair<QString, QString> p = listOfPairs.value(row);

         if (index.column() == 0)
             p.first = value.toString();
         else if (index.column() == 1)
             p.second = value.toString();
         else
             return false;

         listOfPairs.replace(row, p);
         emit(dataChanged(index, index));

         return true;
     }

     return false;
 }

 Qt::ItemFlags TableModel::flags(const QModelIndex &index) const
 {
     if (!index.isValid())
         return Qt::ItemIsEnabled;

     return QAbstractTableModel::flags(index) | Qt::ItemIsEditable;
 }

 QList< QPair<QString, QString> > TableModel::getList()
 {
     return listOfPairs;
 }