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     2 **

     3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

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     7 ** This file is part of the documentation of the Qt Toolkit.

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     9 ** $QT_BEGIN_LICENSE:LGPL$

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    16 ** GNU Lesser General Public License Usage

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    18 ** General Public License version 2.1 as published by the Free Software

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    38 ** $QT_END_LICENSE$

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    40 ****************************************************************************/

    41 

    42 #include <QtGui>

    43 

    44 #include "mainwindow.h"

    45 #include "model.h"

    46 

    47 MainWindow::MainWindow()

    48 {

    49     QMenu *fileMenu = new QMenu(tr("&File"));

    50 

    51     QAction *quitAction = fileMenu->addAction(tr("E&xit"));

    52     quitAction->setShortcut(tr("Ctrl+Q"));

    53 

    54     QMenu *itemsMenu = new QMenu(tr("&Items"));

    55 

    56     insertAction = itemsMenu->addAction(tr("&Insert Item"));

    57     removeAction = itemsMenu->addAction(tr("&Remove Item"));

    58     QAction *ascendingAction = itemsMenu->addAction(tr("Sort in &Ascending Order"));

    59     QAction *descendingAction = itemsMenu->addAction(tr("Sort in &Descending Order"));

    60 

    61     menuBar()->addMenu(fileMenu);

    62     menuBar()->addMenu(itemsMenu);

    63 

    64     QStringList strings;

    65     strings << tr("Oak") << tr("Fir") << tr("Pine") << tr("Birch")

    66             << tr("Hazel") << tr("Redwood") << tr("Sycamore") << tr("Chestnut");

    67     model = new StringListModel(strings, this);

    68 /*  For convenient quoting:

    69     QListView *listView = new QListView(this);

    70 */

    71     listView = new QListView(this);

    72     listView->setModel(model);

    73     listView->setSelectionMode(QAbstractItemView::SingleSelection);

    74 

    75     connect(quitAction, SIGNAL(triggered()), this, SLOT(close()));

    76     connect(ascendingAction, SIGNAL(triggered()), this, SLOT(sortAscending()));

    77     connect(descendingAction, SIGNAL(triggered()), this, SLOT(sortDescending()));

    78     connect(insertAction, SIGNAL(triggered()), this, SLOT(insertItem()));

    79     connect(removeAction, SIGNAL(triggered()), this, SLOT(removeItem()));

    80     connect(listView->selectionModel(),

    81             SIGNAL(currentChanged(const QModelIndex &, const QModelIndex &)),

    82             this, SLOT(updateMenus(const QModelIndex &)));

    83 

    84     updateMenus(listView->selectionModel()->currentIndex());

    85 

    86     setCentralWidget(listView);

    87     setWindowTitle(tr("List View"));

    88 }

    89 

    90 void MainWindow::sortAscending()

    91 {

    92     model->sort(0, Qt::AscendingOrder);

    93 }

    94 

    95 void MainWindow::sortDescending()

    96 {

    97     model->sort(0, Qt::DescendingOrder);

    98 }

    99 

   100 void MainWindow::insertItem()

   101 {

   102     QModelIndex currentIndex = listView->currentIndex();

   103     if (!currentIndex.isValid())

   104         return;

   105 

   106     QString itemText = QInputDialog::getText(this, tr("Insert Item"),

   107         tr("Input text for the new item:"));

   108 

   109     if (itemText.isNull())

   110         return;

   111 

   112     if (model->insertRow(currentIndex.row(), QModelIndex())) {

   113         QModelIndex newIndex = model->index(currentIndex.row(), 0, QModelIndex());

   114         model->setData(newIndex, itemText, Qt::EditRole);

   115 

   116         QString toolTipText = tr("Tooltip:") + itemText;

   117         QString statusTipText = tr("Status tip:") + itemText;

   118         QString whatsThisText = tr("What's This?:") + itemText;

   119         model->setData(newIndex, toolTipText, Qt::ToolTipRole);

   120         model->setData(newIndex, toolTipText, Qt::StatusTipRole);

   121         model->setData(newIndex, whatsThisText, Qt::WhatsThisRole);

   122     }

   123 }

   124 

   125 void MainWindow::removeItem()

   126 {

   127     QModelIndex currentIndex = listView->currentIndex();

   128     if (!currentIndex.isValid())

   129         return;

   130 

   131     model->removeRow(currentIndex.row(), QModelIndex());

   132 }

   133 

   134 void MainWindow::updateMenus(const QModelIndex &current)

   135 {

   136     insertAction->setEnabled(current.isValid());

   137     removeAction->setEnabled(current.isValid());

   138 }