3ccf2f8308
A few examples seem to have copied and pasted a help action "About &Qt" that triggered QCoreApplication::quit. This does not look like best practice. Use QApplication::aboutQt instead. Pick-to: 6.6 6.5 Task-number: QTBUG-111228 Change-Id: I1887a3c999d752a24c7c4d3cabc4a5d63b29b966 Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
112 lines
3.3 KiB
C++
112 lines
3.3 KiB
C++
// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#include "mainwindow.h"
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#include "xbeltree.h"
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#include <QApplication>
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#include <QFileDialog>
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#include <QMenuBar>
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#include <QMessageBox>
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#include <QStatusBar>
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#include <QAction>
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#include <QScreen>
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using namespace Qt::StringLiterals;
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//! [0]
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MainWindow::MainWindow()
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{
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xbelTree = new XbelTree;
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setCentralWidget(xbelTree);
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createMenus();
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statusBar()->showMessage(tr("Ready"));
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setWindowTitle(tr("DOM Bookmarks"));
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const QSize availableSize = screen()->availableGeometry().size();
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resize(availableSize.width() / 2, availableSize.height() / 3);
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}
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//! [0]
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//! [1]
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void MainWindow::open()
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{
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QFileDialog fileDialog(this, tr("Open Bookmark File"), QDir::currentPath());
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fileDialog.setMimeTypeFilters({"application/x-xbel"_L1});
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if (fileDialog.exec() != QDialog::Accepted)
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return;
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const QString fileName = fileDialog.selectedFiles().constFirst();
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QFile file(fileName);
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if (!file.open(QFile::ReadOnly | QFile::Text)) {
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QMessageBox::warning(this, tr("DOM Bookmarks"),
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tr("Cannot read file %1:\n%2.")
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.arg(QDir::toNativeSeparators(fileName),
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file.errorString()));
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return;
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}
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if (xbelTree->read(&file))
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statusBar()->showMessage(tr("File loaded"), 2000);
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}
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//! [1]
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//! [2]
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void MainWindow::saveAs()
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{
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QFileDialog fileDialog(this, tr("Save Bookmark File"), QDir::currentPath());
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fileDialog.setAcceptMode(QFileDialog::AcceptSave);
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fileDialog.setDefaultSuffix("xbel"_L1);
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fileDialog.setMimeTypeFilters({"application/x-xbel"_L1});
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if (fileDialog.exec() != QDialog::Accepted)
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return;
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const QString fileName = fileDialog.selectedFiles().constFirst();
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QFile file(fileName);
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if (!file.open(QFile::WriteOnly | QFile::Text)) {
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QMessageBox::warning(this, tr("DOM Bookmarks"),
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tr("Cannot write file %1:\n%2.")
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.arg(QDir::toNativeSeparators(fileName),
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file.errorString()));
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return;
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}
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if (xbelTree->write(&file))
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statusBar()->showMessage(tr("File saved"), 2000);
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}
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//! [2]
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//! [3]
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void MainWindow::about()
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{
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QMessageBox::about(this, tr("About DOM Bookmarks"),
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tr("The <b>DOM Bookmarks</b> example demonstrates how to "
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"use Qt's DOM classes to read and write XML "
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"documents."));
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}
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//! [3]
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//! [4]
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void MainWindow::createMenus()
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{
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QMenu *fileMenu = menuBar()->addMenu(tr("&File"));
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QAction *openAct = fileMenu->addAction(tr("&Open..."), this, &MainWindow::open);
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openAct->setShortcuts(QKeySequence::Open);
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QAction *saveAsAct = fileMenu->addAction(tr("&Save As..."), this, &MainWindow::saveAs);
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saveAsAct->setShortcuts(QKeySequence::SaveAs);
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QAction *exitAct = fileMenu->addAction(tr("E&xit"), this, &QWidget::close);
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exitAct->setShortcuts(QKeySequence::Quit);
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menuBar()->addSeparator();
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QMenu *helpMenu = menuBar()->addMenu(tr("&Help"));
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helpMenu->addAction(tr("&About"), this, &MainWindow::about);
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helpMenu->addAction(tr("About &Qt"), qApp, &QApplication::aboutQt);
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}
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//! [4]
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