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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the documentation 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 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
** (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 <QtGui>
#include "mainwindow.h"
#include "model.h"
/*!
The main window constructor creates and populates a model with values
from a string list then displays the contents of the model using a
QListView widget.
*/
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
{
QMenu *fileMenu = new QMenu(tr("&File"));
QAction *quitAction = fileMenu->addAction(tr("E&xit"));
quitAction->setShortcut(tr("Ctrl+Q"));
QMenu *itemsMenu = new QMenu(tr("&Items"));
insertAction = itemsMenu->addAction(tr("&Insert Item"));
removeAction = itemsMenu->addAction(tr("&Remove Item"));
menuBar()->addMenu(fileMenu);
menuBar()->addMenu(itemsMenu);
QStringList numbers;
numbers << tr("One") << tr("Two") << tr("Three") << tr("Four") << tr("Five")
<< tr("Six") << tr("Seven") << tr("Eight") << tr("Nine") << tr("Ten");
model = new StringListModel(numbers);
QListView *view = new QListView(this);
view->setModel(model);
selectionModel = view->selectionModel();
connect(quitAction, SIGNAL(triggered()), qApp, SLOT(quit()));
connect(insertAction, SIGNAL(triggered()), this, SLOT(insertItem()));
connect(removeAction, SIGNAL(triggered()), this, SLOT(removeItem()));
connect(selectionModel,
SIGNAL(currentChanged(const QModelIndex &, const QModelIndex &)),
this, SLOT(updateMenus(const QModelIndex &)));
setCentralWidget(view);
setWindowTitle("View onto a string list model");
}
void MainWindow::insertItem()
{
if (!selectionModel->currentIndex().isValid())
return;
QString itemText = QInputDialog::getText(this, tr("Insert Item"),
tr("Input text for the new item:"));
if (itemText.isNull())
return;
int row = selectionModel->currentIndex().row();
if (model->insertRows(row, 1))
model->setData(model->index(row, 0), itemText, Qt::EditRole);
}
void MainWindow::removeItem()
{
if (!selectionModel->currentIndex().isValid())
return;
int row = selectionModel->currentIndex().row();
model->removeRows(row, 1);
}
void MainWindow::updateMenus(const QModelIndex ¤tIndex)
{
insertAction->setEnabled(currentIndex.isValid());
removeAction->setEnabled(currentIndex.isValid());
}
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