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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/

/*
  window.cpp

  A minimal subclass of QTableView with slots to allow the selection model
  to be monitored.
*/

#include <QAbstractItemModel>
#include <QItemSelection>
#include <QItemSelectionModel>
#include <QStatusBar>

#include "model.h"
#include "window.h"

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
{
    setWindowTitle("Selected items in a table model");

    model = new TableModel(8, 4, this);

    table = new QTableView(this);
    table->setModel(model);

    selectionModel = table->selectionModel();
    connect(selectionModel,
        SIGNAL(selectionChanged(const QItemSelection &, const QItemSelection &)),
        this, SLOT(updateSelection(const QItemSelection &, const QItemSelection &)));
    connect(selectionModel,
        SIGNAL(currentChanged(const QModelIndex &, const QModelIndex &)),
        this, SLOT(changeCurrent(const QModelIndex &, const QModelIndex &)));

    statusBar();
    setCentralWidget(table);
}

//! [0]
void MainWindow::updateSelection(const QItemSelection &selected,
    const QItemSelection &deselected)
{
    QModelIndex index;
    QModelIndexList items = selected.indexes();

    foreach (index, items) {
        QString text = QString("(%1,%2)").arg(index.row()).arg(index.column());
        model->setData(index, text);
//! [0] //! [1]
    }
//! [1]

//! [2]
    items = deselected.indexes();

    foreach (index, items)
        model->setData(index, "");
}
//! [2]

//! [3]
void MainWindow::changeCurrent(const QModelIndex &current,
    const QModelIndex &previous)
{
    statusBar()->showMessage(
        tr("Moved from (%1,%2) to (%3,%4)")
            .arg(previous.row()).arg(previous.column())
            .arg(current.row()).arg(current.column()));
}
//! [3]