/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the documentation of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#include <QtGui>+
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+
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#include "mainwindow.h"+
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#include "model.h"+
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+
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/*!+
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    The main window constructor creates and populates a model with values+
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    from a string list then displays the contents of the model using a+
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    QListView widget.+
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*/+
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+
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MainWindow::MainWindow(QWidget *parent)+
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    : QMainWindow(parent)+
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{+
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    QMenu *fileMenu = new QMenu(tr("&File"));+
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+
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    QAction *quitAction = fileMenu->addAction(tr("E&xit"));+
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    quitAction->setShortcut(tr("Ctrl+Q"));+
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+
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    QMenu *itemsMenu = new QMenu(tr("&Items"));+
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+
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    insertAction = itemsMenu->addAction(tr("&Insert Item"));+
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    removeAction = itemsMenu->addAction(tr("&Remove Item"));+
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+
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    menuBar()->addMenu(fileMenu);+
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    menuBar()->addMenu(itemsMenu);+
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+
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    QStringList numbers;+
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    numbers << tr("One") << tr("Two") << tr("Three") << tr("Four") << tr("Five")+
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            << tr("Six") << tr("Seven") << tr("Eight") << tr("Nine") << tr("Ten");+
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+
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    model = new StringListModel(numbers);+
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    QListView *view = new QListView(this);+
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    view->setModel(model);+
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+
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    selectionModel = view->selectionModel();+
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+
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    connect(quitAction, SIGNAL(triggered()), qApp, SLOT(quit()));+
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    connect(insertAction, SIGNAL(triggered()), this, SLOT(insertItem()));+
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    connect(removeAction, SIGNAL(triggered()), this, SLOT(removeItem()));+
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    connect(selectionModel,+
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            SIGNAL(currentChanged(const QModelIndex &, const QModelIndex &)),+
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            this, SLOT(updateMenus(const QModelIndex &)));+
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    +
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    setCentralWidget(view);+
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    setWindowTitle("View onto a string list model");+
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}+
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+
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void MainWindow::insertItem()+
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{+
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    if (!selectionModel->currentIndex().isValid())+
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        return;+
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+
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    QString itemText = QInputDialog::getText(this, tr("Insert Item"),+
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        tr("Input text for the new item:"));+
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+
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    if (itemText.isNull())+
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        return;+
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+
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    int row = selectionModel->currentIndex().row();+
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+
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    if (model->insertRows(row, 1))+
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        model->setData(model->index(row, 0), itemText, Qt::EditRole);+
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}+
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+
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void MainWindow::removeItem()+
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{+
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    if (!selectionModel->currentIndex().isValid())+
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        return;+
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+
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    int row = selectionModel->currentIndex().row();+
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+
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    model->removeRows(row, 1);+
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}+
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+
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void MainWindow::updateMenus(const QModelIndex &currentIndex)+
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{+
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    insertAction->setEnabled(currentIndex.isValid());+
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    removeAction->setEnabled(currentIndex.isValid());+
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}+
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