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** This file is part of the examples of the Qt Toolkit.
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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));
}
