cd46a2daf5
Update files using old header.LGPL3 to header.LGPL Update files using old FDL template to use new one Update files using old BSD template to use new one Change-Id: I36a78272516f9953d02956522f285b40adfc8915 Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
169 lines
6.6 KiB
C++
169 lines
6.6 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2016 The Qt Company Ltd.
|
|
** Contact: https://www.qt.io/licensing/
|
|
**
|
|
** This file is part of the examples of the Qt Toolkit.
|
|
**
|
|
** $QT_BEGIN_LICENSE:BSD$
|
|
** Commercial License Usage
|
|
** Licensees holding valid commercial Qt licenses may use this file in
|
|
** accordance with the commercial license agreement provided with the
|
|
** Software or, alternatively, in accordance with the terms contained in
|
|
** a written agreement between you and The Qt Company. For licensing terms
|
|
** and conditions see https://www.qt.io/terms-conditions. For further
|
|
** information use the contact form at https://www.qt.io/contact-us.
|
|
**
|
|
** BSD License Usage
|
|
** Alternatively, you may use this file under the terms of the BSD license
|
|
** as follows:
|
|
**
|
|
** "Redistribution and use in source and binary forms, with or without
|
|
** modification, are permitted provided that the following conditions are
|
|
** met:
|
|
** * Redistributions of source code must retain the above copyright
|
|
** notice, this list of conditions and the following disclaimer.
|
|
** * Redistributions in binary form must reproduce the above copyright
|
|
** notice, this list of conditions and the following disclaimer in
|
|
** the documentation and/or other materials provided with the
|
|
** distribution.
|
|
** * Neither the name of The Qt Company Ltd nor the names of its
|
|
** contributors may be used to endorse or promote products derived
|
|
** from this software without specific prior written permission.
|
|
**
|
|
**
|
|
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
|
|
**
|
|
** $QT_END_LICENSE$
|
|
**
|
|
****************************************************************************/
|
|
|
|
#include <QtWidgets>
|
|
#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]
|