qt5base-lts/examples/xml/dombookmarks/mainwindow.cpp

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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
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** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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****************************************************************************/
#include <QtWidgets>
#include "mainwindow.h"
#include "xbeltree.h"
MainWindow::MainWindow()
{
xbelTree = new XbelTree;
setCentralWidget(xbelTree);
createMenus();
statusBar()->showMessage(tr("Ready"));
setWindowTitle(tr("DOM Bookmarks"));
const QSize availableSize = screen()->availableGeometry().size();
resize(availableSize.width() / 2, availableSize.height() / 3);
}
void MainWindow::open()
{
QString fileName =
QFileDialog::getOpenFileName(this, tr("Open Bookmark File"),
QDir::currentPath(),
tr("XBEL Files (*.xbel *.xml)"));
if (fileName.isEmpty())
return;
QFile file(fileName);
if (!file.open(QFile::ReadOnly | QFile::Text)) {
QMessageBox::warning(this, tr("SAX Bookmarks"),
tr("Cannot read file %1:\n%2.")
.arg(QDir::toNativeSeparators(fileName),
file.errorString()));
return;
}
if (xbelTree->read(&file))
statusBar()->showMessage(tr("File loaded"), 2000);
}
void MainWindow::saveAs()
{
QString fileName =
QFileDialog::getSaveFileName(this, tr("Save Bookmark File"),
QDir::currentPath(),
tr("XBEL Files (*.xbel *.xml)"));
if (fileName.isEmpty())
return;
QFile file(fileName);
if (!file.open(QFile::WriteOnly | QFile::Text)) {
QMessageBox::warning(this, tr("SAX Bookmarks"),
tr("Cannot write file %1:\n%2.")
.arg(QDir::toNativeSeparators(fileName),
file.errorString()));
return;
}
if (xbelTree->write(&file))
statusBar()->showMessage(tr("File saved"), 2000);
}
void MainWindow::about()
{
QMessageBox::about(this, tr("About DOM Bookmarks"),
tr("The <b>DOM Bookmarks</b> example demonstrates how to "
"use Qt's DOM classes to read and write XML "
"documents."));
}
void MainWindow::createMenus()
{
QMenu *fileMenu = menuBar()->addMenu(tr("&File"));
QAction *openAct = fileMenu->addAction(tr("&Open..."), this, &MainWindow::open);
openAct->setShortcuts(QKeySequence::Open);
QAction *saveAsAct = fileMenu->addAction(tr("&Save As..."), this, &MainWindow::saveAs);
saveAsAct->setShortcuts(QKeySequence::SaveAs);
QAction *exitAct = fileMenu->addAction(tr("E&xit"), this, &QWidget::close);
exitAct->setShortcuts(QKeySequence::Quit);
menuBar()->addSeparator();
QMenu *helpMenu = menuBar()->addMenu(tr("&Help"));
helpMenu->addAction(tr("&About"), this, &MainWindow::about);
helpMenu->addAction(tr("About &Qt"), qApp, &QCoreApplication::quit);
}