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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, 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 The Qt Company Ltd 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
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/

/*
  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(QItemSelection,QItemSelection)),
        this, SLOT(updateSelection(QItemSelection,QItemSelection)));
    connect(selectionModel,
        SIGNAL(currentChanged(QModelIndex,QModelIndex)),
        this, SLOT(changeCurrent(QModelIndex,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]