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#ifndef WINDOW_H
#define WINDOW_H
#include <QMainWindow>
class QAction;
class QListWidget;
class QListWidgetItem;
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
MainWindow();
public slots:
void insertItem();
void removeItem();
void sortAscending();
void sortDescending();
void updateMenus(QListWidgetItem *current);
private:
void setupListItems();
QAction *insertAction;
QAction *removeAction;
QListWidget *listWidget;
};
#endif
#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:
QListWidget *listWidget = new QListWidget(this);
*/
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()
{
new QListWidgetItem(tr("Oak"), listWidget);
new QListWidgetItem(tr("Fir"), listWidget);
new QListWidgetItem(tr("Pine"), listWidget);
new QListWidgetItem(tr("Birch"), listWidget);
new QListWidgetItem(tr("Hazel"), listWidget);
new QListWidgetItem(tr("Redwood"), listWidget);
new QListWidgetItem(tr("Sycamore"), listWidget);
new QListWidgetItem(tr("Chestnut"), listWidget);
new QListWidgetItem(tr("Mahogany"), listWidget);
}
void MainWindow::sortAscending()
{
listWidget->sortItems(Qt::AscendingOrder);
}
void MainWindow::sortDescending()
{
listWidget->sortItems(Qt::DescendingOrder);
}
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;
QListWidgetItem *newItem = new QListWidgetItem;
newItem->setText(itemText);
int row = listWidget->row(listWidget->currentItem());
listWidget->insertItem(row, newItem);
QString toolTipText = tr("Tooltip:") + itemText;
QString statusTipText = tr("Status tip:") + itemText;
QString whatsThisText = tr("What's This?:") + itemText;
newItem->setToolTip(toolTipText);
newItem->setStatusTip(toolTipText);
newItem->setWhatsThis(whatsThisText);
}
void MainWindow::removeItem()
{
listWidget->takeItem(listWidget->row(listWidget->currentItem()));
}
void MainWindow::updateMenus(QListWidgetItem *current)
{
insertAction->setEnabled(current != 0);
removeAction->setEnabled(current != 0);
}
#include <QtGui>
#include "mainwindow.h"
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
MainWindow *window = new MainWindow;
window->show();
return app.exec();
}
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