--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/sql/sqlwidgetmapper/window.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,159 @@
+/****************************************************************************
+**
+** 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+#include <QtSql>
+
+#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);
+//! [Set up widgets]
+
+//! [Set up the mapper]
+ QSqlTableModel *relModel = model->relationModel(typeIndex);
+ typeComboBox->setModel(relModel);
+ typeComboBox->setModelColumn(relModel->fieldIndex("description"));
+
+ mapper = new QDataWidgetMapper(this);
+ mapper->setModel(model);
+ mapper->setItemDelegate(new QSqlRelationalDelegate(this));
+ mapper->addMapping(nameEdit, model->fieldIndex("name"));
+ mapper->addMapping(addressEdit, model->fieldIndex("address"));
+ mapper->addMapping(typeComboBox, typeIndex);
+//! [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("SQL Widget Mapper"));
+ mapper->toFirst();
+}
+//! [Set up connections and layouts]
+
+//! [Set up the main table]
+void Window::setupModel()
+{
+ QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
+ db.setDatabaseName(":memory:");
+ if (!db.open()) {
+ QMessageBox::critical(0, tr("Cannot open database"),
+ tr("Unable to establish a database connection.\n"
+ "This example needs SQLite support. Please read "
+ "the Qt SQL driver documentation for information how "
+ "to build it."), QMessageBox::Cancel);
+ return;
+ }
+
+ QSqlQuery query;
+ query.exec("create table person (id int primary key, "
+ "name varchar(20), address varchar(200), typeid int)");
+ query.exec("insert into person values(1, 'Alice', "
+ "'<qt>123 Main Street<br/>Market Town</qt>', 101)");
+ query.exec("insert into person values(2, 'Bob', "
+ "'<qt>PO Box 32<br/>Mail Handling Service"
+ "<br/>Service City</qt>', 102)");
+ query.exec("insert into person values(3, 'Carol', "
+ "'<qt>The Lighthouse<br/>Remote Island</qt>', 103)");
+ query.exec("insert into person values(4, 'Donald', "
+ "'<qt>47338 Park Avenue<br/>Big City</qt>', 101)");
+ query.exec("insert into person values(5, 'Emma', "
+ "'<qt>Research Station<br/>Base Camp<br/>"
+ "Big Mountain</qt>', 103)");
+//! [Set up the main table]
+
+//! [Set up the address type table]
+ query.exec("create table addresstype (id int, description varchar(20))");
+ query.exec("insert into addresstype values(101, 'Home')");
+ query.exec("insert into addresstype values(102, 'Work')");
+ query.exec("insert into addresstype values(103, 'Other')");
+
+ model = new QSqlRelationalTableModel(this);
+ model->setTable("person");
+ model->setEditStrategy(QSqlTableModel::OnManualSubmit);
+
+ typeIndex = model->fieldIndex("typeid");
+
+ model->setRelation(typeIndex,
+ QSqlRelation("addresstype", "id", "description"));
+ model->select();
+}
+//! [Set up the address type table]
+
+//! [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]