doc/src/snippets/qlistwidget-using/mainwindow.cpp
branchRCL_3
changeset 7 3f74d0d4af4c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/doc/src/snippets/qlistwidget-using/mainwindow.cpp	Thu Apr 08 14:19:33 2010 +0300
@@ -0,0 +1,159 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** 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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include "mainwindow.h"
+
+MainWindow::MainWindow()
+{
+    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"));
+    QAction *ascendingAction = itemsMenu->addAction(tr("Sort in &Ascending Order"));
+    QAction *descendingAction = itemsMenu->addAction(tr("Sort in &Descending Order"));
+
+    menuBar()->addMenu(fileMenu);
+    menuBar()->addMenu(itemsMenu);
+
+/*  For convenient quoting:
+//! [0]
+    QListWidget *listWidget = new QListWidget(this);
+//! [0]
+*/
+    listWidget = new QListWidget(this);
+    listWidget->setSelectionMode(QAbstractItemView::SingleSelection);
+
+    connect(quitAction, SIGNAL(triggered()), this, SLOT(close()));
+    connect(ascendingAction, SIGNAL(triggered()), this, SLOT(sortAscending()));
+    connect(descendingAction, SIGNAL(triggered()), this, SLOT(sortDescending()));
+    connect(insertAction, SIGNAL(triggered()), this, SLOT(insertItem()));
+    connect(removeAction, SIGNAL(triggered()), this, SLOT(removeItem()));
+    connect(listWidget,
+            SIGNAL(currentItemChanged(QListWidgetItem *, QListWidgetItem *)),
+            this, SLOT(updateMenus(QListWidgetItem *)));
+
+    setupListItems();
+    updateMenus(listWidget->currentItem());
+
+    setCentralWidget(listWidget);
+    setWindowTitle(tr("List Widget"));
+}
+
+void MainWindow::setupListItems()
+{
+//! [1]
+    new QListWidgetItem(tr("Oak"), listWidget);
+    new QListWidgetItem(tr("Fir"), listWidget);
+    new QListWidgetItem(tr("Pine"), listWidget);
+//! [1]
+    new QListWidgetItem(tr("Birch"), listWidget);
+//! [2]
+    new QListWidgetItem(tr("Hazel"), listWidget);
+//! [2]
+    new QListWidgetItem(tr("Redwood"), listWidget);
+//! [3]
+    new QListWidgetItem(tr("Sycamore"), listWidget);
+    new QListWidgetItem(tr("Chestnut"), listWidget);
+    new QListWidgetItem(tr("Mahogany"), listWidget);
+//! [3]
+}
+
+void MainWindow::sortAscending()
+{
+//! [4]
+    listWidget->sortItems(Qt::AscendingOrder);
+//! [4]
+}
+
+void MainWindow::sortDescending()
+{
+//! [5]
+    listWidget->sortItems(Qt::DescendingOrder);
+//! [5]
+}
+
+void MainWindow::insertItem()
+{
+    if (!listWidget->currentItem())
+        return;
+
+    QString itemText = QInputDialog::getText(this, tr("Insert Item"),
+        tr("Input text for the new item:"));
+
+    if (itemText.isNull())
+        return;
+
+//! [6]
+    QListWidgetItem *newItem = new QListWidgetItem;
+    newItem->setText(itemText);
+//! [6]
+    int row = listWidget->row(listWidget->currentItem());
+//! [7]
+    listWidget->insertItem(row, newItem);
+//! [7]
+
+    QString toolTipText = tr("Tooltip:") + itemText;
+    QString statusTipText = tr("Status tip:") + itemText;
+    QString whatsThisText = tr("What's This?:") + itemText;
+//! [8]
+    newItem->setToolTip(toolTipText);
+    newItem->setStatusTip(toolTipText);
+    newItem->setWhatsThis(whatsThisText);
+//! [8]
+}
+
+void MainWindow::removeItem()
+{
+    listWidget->takeItem(listWidget->row(listWidget->currentItem()));
+}
+
+void MainWindow::updateMenus(QListWidgetItem *current)
+{
+    insertAction->setEnabled(current != 0);
+    removeAction->setEnabled(current != 0);
+}