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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include <QtWidgets>
#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, &QAction::triggered, this, &QWidget::close);
connect(ascendingAction, &QAction::triggered, this, &MainWindow::sortAscending);
connect(descendingAction, &QAction::triggered, this, &MainWindow::sortDescending);
connect(insertAction, &QAction::triggered, this, &MainWindow::insertItem);
connect(removeAction, &QAction::triggered, this, &MainWindow::removeItem);
connect(listWidget, &QListWidget::currentItemChanged,
this, &MainWindow::updateMenus);
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);
}
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