Mega Code Archive
Combo widget mapper
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** Contact: Nokia Corporation (qt-info@nokia.com)
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** This file is part of the examples of the Qt Toolkit.
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** Software or, alternatively, in accordance with the terms contained in
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** GNU Lesser General Public License Usage
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** 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
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#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, 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]
#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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