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#include <QtGui>

#include "window.h"

//! [Set up widgets]

Window::Window(QWidget *parent)

    : QWidget(parent)

{

    setupModel();

    nameLabel = new QLabel(tr("Na&me:"));

    nameEdit = new QLineEdit();

    addressLabel = new QLabel(tr("&Address:"));

    addressEdit = new QTextEdit();

    typeLabel = new QLabel(tr("&Type:"));

    typeComboBox = new QComboBox();

    nextButton = new QPushButton(tr("&Next"));

    previousButton = new QPushButton(tr("&Previous"));

    nameLabel->setBuddy(nameEdit);

    addressLabel->setBuddy(addressEdit);

    typeLabel->setBuddy(typeComboBox);

    typeComboBox->setModel(typeModel);

//! [Set up widgets]

//! [Set up the mapper]

    mapper = new QDataWidgetMapper(this);

    mapper->setModel(model);

    mapper->addMapping(nameEdit, 0);

    mapper->addMapping(addressEdit, 1);

    mapper->addMapping(typeComboBox, 2, "currentIndex");

//! [Set up the mapper]

//! [Set up connections and layouts]

    connect(previousButton, SIGNAL(clicked()),

            mapper, SLOT(toPrevious()));

    connect(nextButton, SIGNAL(clicked()),

            mapper, SLOT(toNext()));

    connect(mapper, SIGNAL(currentIndexChanged(int)),

            this, SLOT(updateButtons(int)));

    QGridLayout *layout = new QGridLayout();

    layout->addWidget(nameLabel, 0, 0, 1, 1);

    layout->addWidget(nameEdit, 0, 1, 1, 1);

    layout->addWidget(previousButton, 0, 2, 1, 1);

    layout->addWidget(addressLabel, 1, 0, 1, 1);

    layout->addWidget(addressEdit, 1, 1, 2, 1);

    layout->addWidget(nextButton, 1, 2, 1, 1);

    layout->addWidget(typeLabel, 3, 0, 1, 1);

    layout->addWidget(typeComboBox, 3, 1, 1, 1);

    setLayout(layout);

    setWindowTitle(tr("Delegate Widget Mapper"));

    mapper->toFirst();

}

//! [Set up connections and layouts]

//! [Set up the model]

void Window::setupModel()

{

    QStringList items;

    items << tr("Home") << tr("Work") << tr("Other");

    typeModel = new QStringListModel(items, this);

    model = new QStandardItemModel(5, 3, this);

    QStringList names;

    names << "Alice" << "Bob" << "Carol" << "Donald" << "Emma";

    QStringList addresses;

    addresses << "<qt>123 Main Street<br/>Market Town</qt>"

              << "<qt>PO Box 32<br/>Mail Handling Service"

                 "<br/>Service City</qt>"

              << "<qt>The Lighthouse<br/>Remote Island</qt>"

              << "<qt>47338 Park Avenue<br/>Big City</qt>"

              << "<qt>Research Station<br/>Base Camp<br/>Big Mountain</qt>";

    QStringList types;

    types << "0" << "1" << "2" << "0" << "2";

    for (int row = 0; row < 5; ++row) {

      QStandardItem *item = new QStandardItem(names[row]);

      model->setItem(row, 0, item);

      item = new QStandardItem(addresses[row]);

      model->setItem(row, 1, item);

      item = new QStandardItem(types[row]);

      model->setItem(row, 2, item);

    }

}

//! [Set up the model]

//! [Slot for updating the buttons]

void Window::updateButtons(int row)

{

    previousButton->setEnabled(row > 0);

    nextButton->setEnabled(row < model->rowCount() - 1);

}

//! [Slot for updating the buttons]