diff -r 000000000000 -r 1918ee327afb doc/src/snippets/qlistview-using/mainwindow.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/doc/src/snippets/qlistview-using/mainwindow.cpp Mon Jan 11 14:00:40 2010 +0000 @@ -0,0 +1,138 @@ +/**************************************************************************** +** +** Copyright (C) 2009 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 + +#include "mainwindow.h" +#include "model.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); + + QStringList strings; + strings << tr("Oak") << tr("Fir") << tr("Pine") << tr("Birch") + << tr("Hazel") << tr("Redwood") << tr("Sycamore") << tr("Chestnut"); + model = new StringListModel(strings, this); +/* For convenient quoting: + QListView *listView = new QListView(this); +*/ + listView = new QListView(this); + listView->setModel(model); + listView->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(listView->selectionModel(), + SIGNAL(currentChanged(const QModelIndex &, const QModelIndex &)), + this, SLOT(updateMenus(const QModelIndex &))); + + updateMenus(listView->selectionModel()->currentIndex()); + + setCentralWidget(listView); + setWindowTitle(tr("List View")); +} + +void MainWindow::sortAscending() +{ + model->sort(0, Qt::AscendingOrder); +} + +void MainWindow::sortDescending() +{ + model->sort(0, Qt::DescendingOrder); +} + +void MainWindow::insertItem() +{ + QModelIndex currentIndex = listView->currentIndex(); + if (!currentIndex.isValid()) + return; + + QString itemText = QInputDialog::getText(this, tr("Insert Item"), + tr("Input text for the new item:")); + + if (itemText.isNull()) + return; + + if (model->insertRow(currentIndex.row(), QModelIndex())) { + QModelIndex newIndex = model->index(currentIndex.row(), 0, QModelIndex()); + model->setData(newIndex, itemText, Qt::EditRole); + + QString toolTipText = tr("Tooltip:") + itemText; + QString statusTipText = tr("Status tip:") + itemText; + QString whatsThisText = tr("What's This?:") + itemText; + model->setData(newIndex, toolTipText, Qt::ToolTipRole); + model->setData(newIndex, toolTipText, Qt::StatusTipRole); + model->setData(newIndex, whatsThisText, Qt::WhatsThisRole); + } +} + +void MainWindow::removeItem() +{ + QModelIndex currentIndex = listView->currentIndex(); + if (!currentIndex.isValid()) + return; + + model->removeRow(currentIndex.row(), QModelIndex()); +} + +void MainWindow::updateMenus(const QModelIndex ¤t) +{ + insertAction->setEnabled(current.isValid()); + removeAction->setEnabled(current.isValid()); +}