Combo widget mapper : QWidget « Qt « C++

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C++ » Qt » QWidgetScreenshots 
Combo widget mapper
  
/****************************************************************************
**
** Copyright (C) 2009 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.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights.  These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 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 the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef WINDOW_H
#define WINDOW_H

#include <QWidget>

QT_BEGIN_NAMESPACE
class QComboBox;
class QDataWidgetMapper;
class QLabel;
class QLineEdit;
class QPushButton;
class QStandardItemModel;
class QStringListModel;
class QTextEdit;
QT_END_NAMESPACE

//! [Window definition]
class Window : public QWidget
{
    Q_OBJECT

public:
    Window(QWidget *parent = 0);

private slots:
    void updateButtons(int row);

private:
    void setupModel();

    QLabel *nameLabel;
    QLabel *addressLabel;
    QLabel *typeLabel;
    QLineEdit *nameEdit;
    QTextEdit *addressEdit;
    QComboBox *typeComboBox;
    QPushButton *nextButton;
    QPushButton *previousButton;

    QStandardItemModel *model;
    QStringListModel *typeModel;
    QDataWidgetMapper *mapper;
};
//! [Window definition]

#endif







#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, 0011);
    layout->addWidget(nameEdit, 0111);
    layout->addWidget(previousButton, 0211);
    layout->addWidget(addressLabel, 1011);
    layout->addWidget(addressEdit, 1121);
    layout->addWidget(nextButton, 1211);
    layout->addWidget(typeLabel, 3011);
    layout->addWidget(typeComboBox, 3111);
    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(53this);
    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]







#include <QApplication>

#include "window.h"

int main(int argc, char **argv)
{
    QApplication app(argc, argv);
    Window window;
    window.show();
    return app.exec();
}

   
    
  
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