mainwindow.cpp Example File

itemviews/simpledommodel/mainwindow.cpp
 /****************************************************************************
 **
 ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
 ** 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
 **     notice, this list of conditions and the following disclaimer in
 **     the documentation and/or other materials provided with the
 **     distribution.
 **   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
 **     the names of its contributors may be used to endorse or promote
 **     products derived from this software without specific prior written
 **     permission.
 **
 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #include <QDomDocument>
 #include <QFile>
 #include <QtGui>

 #include "dommodel.h"
 #include "mainwindow.h"

 MainWindow::MainWindow() : QMainWindow(), model(0)
 {
     fileMenu = menuBar()->addMenu(tr("&File"));
     fileMenu->addAction(tr("&Open..."), this, SLOT(openFile()),
                         QKeySequence::Open);
     fileMenu->addAction(tr("E&xit"), this, SLOT(close()),
                         QKeySequence::Quit);

     model = new DomModel(QDomDocument(), this);
     view = new QTreeView(this);
     view->setModel(model);

     setCentralWidget(view);
     setWindowTitle(tr("Simple DOM Model"));
 }

 void MainWindow::openFile()
 {
     QString filePath = QFileDialog::getOpenFileName(this, tr("Open File"),
         xmlPath, tr("XML files (*.xml);;HTML files (*.html);;"
                     "SVG files (*.svg);;User Interface files (*.ui)"));

     if (!filePath.isEmpty()) {
         QFile file(filePath);
         if (file.open(QIODevice::ReadOnly)) {
             QDomDocument document;
             if (document.setContent(&file)) {
                 DomModel *newModel = new DomModel(document, this);
                 view->setModel(newModel);
                 delete model;
                 model = newModel;
                 xmlPath = filePath;
             }
             file.close();
         }
     }
 }