mainwindow.cpp Example File

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#include <QtWidgets> #include "mainwindow.h" #include "xbelreader.h" #include "xbelwriter.h" MainWindow::MainWindow() { QStringList labels; labels << tr("Title") << tr("Location"); treeWidget = new QTreeWidget; treeWidget->header()->setSectionResizeMode(QHeaderView::Stretch); treeWidget->setHeaderLabels(labels); #if !defined(QT_NO_CONTEXTMENU) && !defined(QT_NO_CLIPBOARD) treeWidget->setContextMenuPolicy(Qt::CustomContextMenu); connect(treeWidget, &QWidget::customContextMenuRequested, this, &MainWindow::onCustomContextMenuRequested); #endif setCentralWidget(treeWidget); createMenus(); statusBar()->showMessage(tr("Ready")); setWindowTitle(tr("QXmlStream Bookmarks")); const QSize availableSize = QApplication::desktop()->availableGeometry(this).size(); resize(availableSize.width() / 2, availableSize.height() / 3); } #if !defined(QT_NO_CONTEXTMENU) && !defined(QT_NO_CLIPBOARD) void MainWindow::onCustomContextMenuRequested(const QPoint &pos) { const QTreeWidgetItem *item = treeWidget->itemAt(pos); if (!item) return; const QString url = item->text(1); QMenu contextMenu; QAction *copyAction = contextMenu.addAction(tr("Copy Link to Clipboard")); QAction *openAction = contextMenu.addAction(tr("Open")); QAction *action = contextMenu.exec(treeWidget->viewport()->mapToGlobal(pos)); if (action == copyAction) QGuiApplication::clipboard()->setText(url); else if (action == openAction) QDesktopServices::openUrl(QUrl(url)); } #endif // !QT_NO_CONTEXTMENU && !QT_NO_CLIPBOARD void MainWindow::open() { QString fileName = QFileDialog::getOpenFileName(this, tr("Open Bookmark File"), QDir::currentPath(), tr("XBEL Files (*.xbel *.xml)")); if (fileName.isEmpty()) return; treeWidget->clear(); QFile file(fileName); if (! | QFile::Text)) { QMessageBox::warning(this, tr("QXmlStream Bookmarks"), tr("Cannot read file %1:\n%2.") .arg(QDir::toNativeSeparators(fileName), file.errorString())); return; } XbelReader reader(treeWidget); if (! { QMessageBox::warning(this, tr("QXmlStream Bookmarks"), tr("Parse error in file %1:\n\n%2") .arg(QDir::toNativeSeparators(fileName), reader.errorString())); } else { 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 (! | QFile::Text)) { QMessageBox::warning(this, tr("QXmlStream Bookmarks"), tr("Cannot write file %1:\n%2.") .arg(QDir::toNativeSeparators(fileName), file.errorString())); return; } XbelWriter writer(treeWidget); if (writer.writeFile(&file)) statusBar()->showMessage(tr("File saved"), 2000); } void MainWindow::about() { QMessageBox::about(this, tr("About QXmlStream Bookmarks"), tr("The <b>QXmlStream Bookmarks</b> example demonstrates how to use Qt's " "QXmlStream 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); }

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