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# configdialog.cpp Example File
dialogs/configdialog/configdialog.cpp

     /****************************************************************************
     **
     ** Copyright (C) 2005-2007 Trolltech ASA. All rights reserved.
     **
     ** This file is part of the example classes of the Qt Toolkit.
     **
     ** This file may be used under the terms of the GNU General Public
     ** License version 2.0 as published by the Free Software Foundation
     ** and appearing in the file LICENSE.GPL included in the packaging of
     ** this file.  Please review the following information to ensure GNU
     ** General Public Licensing requirements will be met:
     ** http://www.trolltech.com/products/qt/opensource.html
     **
     ** If you are unsure which license is appropriate for your use, please
     ** review the following information:
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     ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
     ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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     ****************************************************************************/

     #include <QtGui>

     #include "configdialog.h"
     #include "pages.h"

     ConfigDialog::ConfigDialog()
     {
         contentsWidget = new QListWidget;
         contentsWidget->setViewMode(QListView::IconMode);
         contentsWidget->setIconSize(QSize(96, 84));
         contentsWidget->setMovement(QListView::Static);
         contentsWidget->setMaximumWidth(128);
         contentsWidget->setSpacing(12);

         pagesWidget = new QStackedWidget;
         pagesWidget->addWidget(new ConfigurationPage);
         pagesWidget->addWidget(new UpdatePage);
         pagesWidget->addWidget(new QueryPage);

         QPushButton *closeButton = new QPushButton(tr("Close"));

         createIcons();
         contentsWidget->setCurrentRow(0);

         connect(closeButton, SIGNAL(clicked()), this, SLOT(close()));

         QHBoxLayout *horizontalLayout = new QHBoxLayout;
         horizontalLayout->addWidget(contentsWidget);
         horizontalLayout->addWidget(pagesWidget, 1);

         QHBoxLayout *buttonsLayout = new QHBoxLayout;
         buttonsLayout->addStretch(1);
         buttonsLayout->addWidget(closeButton);

         QVBoxLayout *mainLayout = new QVBoxLayout;
         mainLayout->addLayout(horizontalLayout);
         mainLayout->addStretch(1);
         mainLayout->addSpacing(12);
         mainLayout->addLayout(buttonsLayout);
         setLayout(mainLayout);

         setWindowTitle(tr("Config Dialog"));
     }

     void ConfigDialog::createIcons()
     {
         QListWidgetItem *configButton = new QListWidgetItem(contentsWidget);
         configButton->setIcon(QIcon(":/images/config.png"));
         configButton->setText(tr("Configuration"));
         configButton->setTextAlignment(Qt::AlignHCenter);
         configButton->setFlags(Qt::ItemIsSelectable | Qt::ItemIsEnabled);

         QListWidgetItem *updateButton = new QListWidgetItem(contentsWidget);
         updateButton->setIcon(QIcon(":/images/update.png"));
         updateButton->setText(tr("Update"));
         updateButton->setTextAlignment(Qt::AlignHCenter);
         updateButton->setFlags(Qt::ItemIsSelectable | Qt::ItemIsEnabled);

         QListWidgetItem *queryButton = new QListWidgetItem(contentsWidget);
         queryButton->setIcon(QIcon(":/images/query.png"));
         queryButton->setText(tr("Query"));
         queryButton->setTextAlignment(Qt::AlignHCenter);
         queryButton->setFlags(Qt::ItemIsSelectable | Qt::ItemIsEnabled);

         connect(contentsWidget,
                 SIGNAL(currentItemChanged(QListWidgetItem *, QListWidgetItem *)),
                 this, SLOT(changePage(QListWidgetItem *, QListWidgetItem*)));
     }

     void ConfigDialog::changePage(QListWidgetItem *current, QListWidgetItem *previous)
     {
         if (!current)
             current = previous;

         pagesWidget->setCurrentIndex(contentsWidget->row(current));
     }