mainwindow.cpp - mozsearch

Enable keyboard shortcuts

// Copyright (C) 2016 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause

#include <QtWidgets>

#include "../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"));

    removeAction->setEnabled(false);

    itemsMenu->addSeparator();

    ascendingAction = itemsMenu->addAction(tr("Sort in &Ascending Order"));

    descendingAction = itemsMenu->addAction(tr("Sort in &Descending Order"));

    autoSortAction = itemsMenu->addAction(tr("&Automatically Sort Items"));

    autoSortAction->setCheckable(true);

    itemsMenu->addSeparator();

    QAction *findItemsAction = itemsMenu->addAction(tr("&Find Items"));

    findItemsAction->setShortcut(tr("Ctrl+F"));

    menuBar()->addMenu(fileMenu);

    menuBar()->addMenu(itemsMenu);

/*  For convenient quoting:

    //! [0]

    QTreeWidget *treeWidget = new QTreeWidget(this);

    //! [0]

*/

    treeWidget = new QTreeWidget(this);

    //! [1]

    treeWidget->setColumnCount(2);

    //! [1]

    //! [2]

    QStringList headers;

    headers << tr("Subject") << tr("Default");

    treeWidget->setHeaderLabels(headers);

    //! [2]

    connect(quitAction, &QAction::triggered, this, &QWidget::close);

    connect(ascendingAction, &QAction::triggered, this, &MainWindow::sortAscending);

    connect(autoSortAction, &QAction::triggered, this, &MainWindow::updateSortItems);

    connect(descendingAction, &QAction::triggered, this, &MainWindow::sortDescending);

    connect(findItemsAction, &QAction::triggered, this, &MainWindow::findItems);

    connect(insertAction, &QAction::triggered, this, &MainWindow::insertItem);

    connect(removeAction, &QAction::triggered, this, &MainWindow::removeItem);

    connect(treeWidget, &QTreeWidget::currentItemChanged,

            this, &MainWindow::updateMenus);

    setupTreeItems();

    updateMenus(treeWidget->currentItem());

    setCentralWidget(treeWidget);

    setWindowTitle(tr("Tree Widget"));

void MainWindow::setupTreeItems()

    //! [3]

    QTreeWidgetItem *cities = new QTreeWidgetItem(treeWidget);

    cities->setText(0, tr("Cities"));

    QTreeWidgetItem *osloItem = new QTreeWidgetItem(cities);

    osloItem->setText(0, tr("Oslo"));

    osloItem->setText(1, tr("Yes"));

    //! [3]

    (new QTreeWidgetItem(cities))->setText(0, tr("Stockholm"));

    (new QTreeWidgetItem(cities))->setText(0, tr("Helsinki"));

    (new QTreeWidgetItem(cities))->setText(0, tr("Copenhagen"));

    //! [4] //! [5]

    QTreeWidgetItem *planets = new QTreeWidgetItem(treeWidget, cities);

    //! [4]

    planets->setText(0, tr("Planets"));

    //! [5]

    (new QTreeWidgetItem(planets))->setText(0, tr("Mercury"));

    (new QTreeWidgetItem(planets))->setText(0, tr("Venus"));

    QTreeWidgetItem *earthItem = new QTreeWidgetItem(planets);

    earthItem->setText(0, tr("Earth"));

    earthItem->setText(1, tr("Yes"));

    (new QTreeWidgetItem(planets))->setText(0, tr("Mars"));

    (new QTreeWidgetItem(planets))->setText(0, tr("Jupiter"));

    (new QTreeWidgetItem(planets))->setText(0, tr("Saturn"));

    (new QTreeWidgetItem(planets))->setText(0, tr("Uranus"));

    (new QTreeWidgetItem(planets))->setText(0, tr("Neptune"));

    (new QTreeWidgetItem(planets))->setText(0, tr("Pluto"));

void MainWindow::findItems()

    QString itemText = QInputDialog::getText(this, tr("Find Items"),

        tr("Text to find (including wildcards):"));

    if (itemText.isEmpty())

        return;

    const QList<QTreeWidgetItem *> items = treeWidget->selectedItems();

    for (QTreeWidgetItem *item : items)

        item->setSelected(false);

    //! [7]

    const QList<QTreeWidgetItem *> found = treeWidget->findItems(

        itemText, Qt::MatchWildcard);

    for (QTreeWidgetItem *item : found) {

        item->setSelected(true);

        // Show the item->text(0) for each item.

    //! [7]

void MainWindow::insertItem()

    QTreeWidgetItem *currentItem = treeWidget->currentItem();

    if (!currentItem)

        return;

    QString itemText = QInputDialog::getText(this, tr("Insert Item"),

        tr("Input text for the new item:"));

    if (itemText.isEmpty())

        return;

    //! [8]

    QTreeWidgetItem *parent = currentItem->parent();

    QTreeWidgetItem *newItem;

    if (parent)

        newItem = new QTreeWidgetItem(parent, treeWidget->currentItem());

    else

    //! [8] //! [9]

        newItem = new QTreeWidgetItem(treeWidget, treeWidget->currentItem());

    //! [9]

    newItem->setText(0, itemText);

void MainWindow::removeItem()

    QTreeWidgetItem *currentItem = treeWidget->currentItem();

    if (!currentItem)

        return;

    //! [10]

    QTreeWidgetItem *parent = currentItem->parent();

    int index;

    if (parent) {

        index = parent->indexOfChild(treeWidget->currentItem());

        delete parent->takeChild(index);

    } else {

        index = treeWidget->indexOfTopLevelItem(treeWidget->currentItem());

        delete treeWidget->takeTopLevelItem(index);

    //! [10]

void MainWindow::sortAscending()

    treeWidget->sortItems(0, Qt::AscendingOrder);

void MainWindow::sortDescending()

    treeWidget->sortItems(0, Qt::DescendingOrder);

void MainWindow::updateMenus(QTreeWidgetItem *current)

    insertAction->setEnabled(current != 0);

    removeAction->setEnabled(current != 0);

void MainWindow::updateSortItems()

    ascendingAction->setEnabled(!autoSortAction->isChecked());

    descendingAction->setEnabled(!autoSortAction->isChecked());

    treeWidget->setSortingEnabled(autoSortAction->isChecked());