util/examples/xml/saxbookmarks/mainwindow.cpp
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     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
       
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     5 ** Contact: Nokia Corporation (qt-info@nokia.com)
       
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    20 ** packaging of this file.  Please review the following information to
       
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    36 **
       
    37 **
       
    38 ** $QT_END_LICENSE$
       
    39 **
       
    40 ****************************************************************************/
       
    41 
       
    42 #include <QtGui>
       
    43 
       
    44 #include "mainwindow.h"
       
    45 #include "xbelgenerator.h"
       
    46 #include "xbelhandler.h"
       
    47 
       
    48 MainWindow::MainWindow()
       
    49 {
       
    50     QStringList labels;
       
    51     labels << tr("Title") << tr("Location");
       
    52 
       
    53     treeWidget = new QTreeWidget;
       
    54     treeWidget->header()->setResizeMode(QHeaderView::Stretch);
       
    55     treeWidget->setHeaderLabels(labels);
       
    56     setCentralWidget(treeWidget);
       
    57 
       
    58     createActions();
       
    59     createMenus();
       
    60 
       
    61     statusBar()->showMessage(tr("Ready"));
       
    62 
       
    63     setWindowTitle(tr("SAX Bookmarks"));
       
    64     resize(480, 320);
       
    65 }
       
    66 
       
    67 void MainWindow::open()
       
    68 {
       
    69 #if defined(Q_OS_SYMBIAN)
       
    70     // Look for bookmarks on the same drive where the application is installed to,
       
    71     // if drive is not read only. QDesktopServices::DataLocation does this check,
       
    72     // and returns writable drive.
       
    73     QString bookmarksFolder =
       
    74             QDesktopServices::storageLocation(QDesktopServices::DataLocation).left(1);
       
    75     bookmarksFolder.append(":/Data/qt/saxbookmarks");
       
    76     QDir::setCurrent(bookmarksFolder);
       
    77 #endif
       
    78     QString fileName =
       
    79             QFileDialog::getOpenFileName(this, tr("Open Bookmark File"),
       
    80                                          QDir::currentPath(),
       
    81                                          tr("XBEL Files (*.xbel *.xml)"));
       
    82     if (fileName.isEmpty())
       
    83         return;
       
    84 
       
    85     treeWidget->clear();
       
    86 
       
    87     XbelHandler handler(treeWidget);
       
    88     QXmlSimpleReader reader;
       
    89     reader.setContentHandler(&handler);
       
    90     reader.setErrorHandler(&handler);
       
    91 
       
    92     QFile file(fileName);
       
    93     if (!file.open(QFile::ReadOnly | QFile::Text)) {
       
    94         QMessageBox::warning(this, tr("SAX Bookmarks"),
       
    95                              tr("Cannot read file %1:\n%2.")
       
    96                              .arg(fileName)
       
    97                              .arg(file.errorString()));
       
    98         return;
       
    99     }
       
   100 
       
   101     QXmlInputSource xmlInputSource(&file);
       
   102     if (reader.parse(xmlInputSource))
       
   103         statusBar()->showMessage(tr("File loaded"), 2000);
       
   104 }
       
   105 
       
   106 void MainWindow::saveAs()
       
   107 {
       
   108     QString fileName =
       
   109             QFileDialog::getSaveFileName(this, tr("Save Bookmark File"),
       
   110                                          QDir::currentPath(),
       
   111                                          tr("XBEL Files (*.xbel *.xml)"));
       
   112     if (fileName.isEmpty())
       
   113         return;
       
   114 
       
   115     QFile file(fileName);
       
   116     if (!file.open(QFile::WriteOnly | QFile::Text)) {
       
   117         QMessageBox::warning(this, tr("SAX Bookmarks"),
       
   118                              tr("Cannot write file %1:\n%2.")
       
   119                              .arg(fileName)
       
   120                              .arg(file.errorString()));
       
   121         return;
       
   122     }
       
   123 
       
   124     XbelGenerator generator(treeWidget);
       
   125     if (generator.write(&file))
       
   126         statusBar()->showMessage(tr("File saved"), 2000);
       
   127 }
       
   128 
       
   129 void MainWindow::about()
       
   130 {
       
   131    QMessageBox::about(this, tr("About SAX Bookmarks"),
       
   132             tr("The <b>SAX Bookmarks</b> example demonstrates how to use Qt's "
       
   133                "SAX classes to read XML documents and how to generate XML by "
       
   134                "hand."));
       
   135 }
       
   136 
       
   137 void MainWindow::createActions()
       
   138 {
       
   139     openAct = new QAction(tr("&Open..."), this);
       
   140     openAct->setShortcuts(QKeySequence::Open);
       
   141     connect(openAct, SIGNAL(triggered()), this, SLOT(open()));
       
   142 
       
   143     saveAsAct = new QAction(tr("&Save As..."), this);
       
   144     saveAsAct->setShortcuts(QKeySequence::SaveAs);
       
   145     connect(saveAsAct, SIGNAL(triggered()), this, SLOT(saveAs()));
       
   146 
       
   147     exitAct = new QAction(tr("E&xit"), this);
       
   148     exitAct->setShortcuts(QKeySequence::Quit);
       
   149     connect(exitAct, SIGNAL(triggered()), this, SLOT(close()));
       
   150 
       
   151     aboutAct = new QAction(tr("&About"), this);
       
   152     connect(aboutAct, SIGNAL(triggered()), this, SLOT(about()));
       
   153 
       
   154     aboutQtAct = new QAction(tr("About &Qt"), this);
       
   155     connect(aboutQtAct, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
       
   156 }
       
   157 
       
   158 void MainWindow::createMenus()
       
   159 {
       
   160     fileMenu = menuBar()->addMenu(tr("&File"));
       
   161     fileMenu->addAction(openAct);
       
   162     fileMenu->addAction(saveAsAct);
       
   163     fileMenu->addAction(exitAct);
       
   164 
       
   165     menuBar()->addSeparator();
       
   166 
       
   167     helpMenu = menuBar()->addMenu(tr("&Help"));
       
   168     helpMenu->addAction(aboutAct);
       
   169     helpMenu->addAction(aboutQtAct);
       
   170 }