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Diffstat (limited to 'doc/codesnippets/doc/src/snippets/qlistwidget-using/mainwindow.cpp')
-rw-r--r-- | doc/codesnippets/doc/src/snippets/qlistwidget-using/mainwindow.cpp | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/doc/codesnippets/doc/src/snippets/qlistwidget-using/mainwindow.cpp b/doc/codesnippets/doc/src/snippets/qlistwidget-using/mainwindow.cpp new file mode 100644 index 000000000..b8df442b5 --- /dev/null +++ b/doc/codesnippets/doc/src/snippets/qlistwidget-using/mainwindow.cpp @@ -0,0 +1,159 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the documentation of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial Usage +** Licensees holding valid Qt Commercial licenses may use this file in +** accordance with the Qt Commercial License Agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Nokia. +** +** 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 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at http://www.qtsoftware.com/contact. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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] + listWidget = QListWidget(self) +//! [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] + QListWidgetItem(tr("Oak"), listWidget) + QListWidgetItem(tr("Fir"), listWidget) + QListWidgetItem(tr("Pine"), listWidget) +//! [1] + new QListWidgetItem(tr("Birch"), listWidget); +//! [2] + QListWidgetItem(tr("Hazel"), listWidget) +//! [2] + new QListWidgetItem(tr("Redwood"), listWidget); +//! [3] + QListWidgetItem(tr("Sycamore"), listWidget) + QListWidgetItem(tr("Chestnut"), listWidget) + 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] + newItem = 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); +} |