mainwindow.cpp Example File

saxbookmarks/mainwindow.cpp
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#include <QtWidgets> #include "mainwindow.h" #include "xbelgenerator.h" #include "xbelhandler.h" MainWindow::MainWindow() { QStringList labels; labels << tr("Title") << tr("Location"); treeWidget = new QTreeWidget; treeWidget->header()->setSectionResizeMode(QHeaderView::Stretch); treeWidget->setHeaderLabels(labels); setCentralWidget(treeWidget); createActions(); createMenus(); statusBar()->showMessage(tr("Ready")); setWindowTitle(tr("SAX Bookmarks")); resize(480, 320); } 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(); XbelHandler handler(treeWidget); QXmlSimpleReader reader; reader.setContentHandler(&handler); reader.setErrorHandler(&handler); QFile file(fileName); if (!file.open(QFile::ReadOnly | QFile::Text)) { QMessageBox::warning(this, tr("SAX Bookmarks"), tr("Cannot read file %1:\n%2.") .arg(fileName) .arg(file.errorString())); return; } QXmlInputSource xmlInputSource(&file); if (reader.parse(xmlInputSource)) 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(fileName) .arg(file.errorString())); return; } XbelGenerator generator(treeWidget); if (generator.write(&file)) statusBar()->showMessage(tr("File saved"), 2000); } void MainWindow::about() { QMessageBox::about(this, tr("About SAX Bookmarks"), tr("The <b>SAX Bookmarks</b> example demonstrates how to use Qt's " "SAX classes to read XML documents and how to generate XML by " "hand.")); } void MainWindow::createActions() { openAct = new QAction(tr("&Open..."), this); openAct->setShortcuts(QKeySequence::Open); connect(openAct, SIGNAL(triggered()), this, SLOT(open())); saveAsAct = new QAction(tr("&Save As..."), this); saveAsAct->setShortcuts(QKeySequence::SaveAs); connect(saveAsAct, SIGNAL(triggered()), this, SLOT(saveAs())); exitAct = new QAction(tr("E&xit"), this); exitAct->setShortcuts(QKeySequence::Quit); connect(exitAct, SIGNAL(triggered()), this, SLOT(close())); aboutAct = new QAction(tr("&About"), this); connect(aboutAct, SIGNAL(triggered()), this, SLOT(about())); aboutQtAct = new QAction(tr("About &Qt"), this); connect(aboutQtAct, SIGNAL(triggered()), qApp, SLOT(aboutQt())); } void MainWindow::createMenus() { fileMenu = menuBar()->addMenu(tr("&File")); fileMenu->addAction(openAct); fileMenu->addAction(saveAsAct); fileMenu->addAction(exitAct); menuBar()->addSeparator(); helpMenu = menuBar()->addMenu(tr("&Help")); helpMenu->addAction(aboutAct); helpMenu->addAction(aboutQtAct); }