e510b6e466
Fixed the include statements added QT+=widgets in examples/network to get them to compile. Will need something better than doing it manually.
159 lines
6.2 KiB
C++
159 lines
6.2 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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** the names of its contributors may be used to endorse or promote
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** products derived from this software without specific prior written
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** permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtWidgets>
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#include <QtSql>
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#include "window.h"
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//! [Set up widgets]
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Window::Window(QWidget *parent)
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: QWidget(parent)
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{
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setupModel();
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nameLabel = new QLabel(tr("Na&me:"));
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nameEdit = new QLineEdit();
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addressLabel = new QLabel(tr("&Address:"));
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addressEdit = new QTextEdit();
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typeLabel = new QLabel(tr("&Type:"));
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typeComboBox = new QComboBox();
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nextButton = new QPushButton(tr("&Next"));
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previousButton = new QPushButton(tr("&Previous"));
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nameLabel->setBuddy(nameEdit);
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addressLabel->setBuddy(addressEdit);
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typeLabel->setBuddy(typeComboBox);
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//! [Set up widgets]
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//! [Set up the mapper]
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QSqlTableModel *relModel = model->relationModel(typeIndex);
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typeComboBox->setModel(relModel);
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typeComboBox->setModelColumn(relModel->fieldIndex("description"));
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mapper = new QDataWidgetMapper(this);
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mapper->setModel(model);
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mapper->setItemDelegate(new QSqlRelationalDelegate(this));
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mapper->addMapping(nameEdit, model->fieldIndex("name"));
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mapper->addMapping(addressEdit, model->fieldIndex("address"));
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mapper->addMapping(typeComboBox, typeIndex);
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//! [Set up the mapper]
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//! [Set up connections and layouts]
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connect(previousButton, SIGNAL(clicked()),
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mapper, SLOT(toPrevious()));
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connect(nextButton, SIGNAL(clicked()),
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mapper, SLOT(toNext()));
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connect(mapper, SIGNAL(currentIndexChanged(int)),
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this, SLOT(updateButtons(int)));
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QGridLayout *layout = new QGridLayout();
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layout->addWidget(nameLabel, 0, 0, 1, 1);
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layout->addWidget(nameEdit, 0, 1, 1, 1);
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layout->addWidget(previousButton, 0, 2, 1, 1);
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layout->addWidget(addressLabel, 1, 0, 1, 1);
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layout->addWidget(addressEdit, 1, 1, 2, 1);
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layout->addWidget(nextButton, 1, 2, 1, 1);
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layout->addWidget(typeLabel, 3, 0, 1, 1);
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layout->addWidget(typeComboBox, 3, 1, 1, 1);
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setLayout(layout);
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setWindowTitle(tr("SQL Widget Mapper"));
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mapper->toFirst();
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}
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//! [Set up connections and layouts]
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//! [Set up the main table]
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void Window::setupModel()
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{
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QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
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db.setDatabaseName(":memory:");
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if (!db.open()) {
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QMessageBox::critical(0, tr("Cannot open database"),
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tr("Unable to establish a database connection.\n"
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"This example needs SQLite support. Please read "
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"the Qt SQL driver documentation for information how "
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"to build it."), QMessageBox::Cancel);
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return;
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}
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QSqlQuery query;
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query.exec("create table person (id int primary key, "
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"name varchar(20), address varchar(200), typeid int)");
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query.exec("insert into person values(1, 'Alice', "
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"'<qt>123 Main Street<br/>Market Town</qt>', 101)");
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query.exec("insert into person values(2, 'Bob', "
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"'<qt>PO Box 32<br/>Mail Handling Service"
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"<br/>Service City</qt>', 102)");
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query.exec("insert into person values(3, 'Carol', "
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"'<qt>The Lighthouse<br/>Remote Island</qt>', 103)");
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query.exec("insert into person values(4, 'Donald', "
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"'<qt>47338 Park Avenue<br/>Big City</qt>', 101)");
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query.exec("insert into person values(5, 'Emma', "
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"'<qt>Research Station<br/>Base Camp<br/>"
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"Big Mountain</qt>', 103)");
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//! [Set up the main table]
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//! [Set up the address type table]
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query.exec("create table addresstype (id int, description varchar(20))");
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query.exec("insert into addresstype values(101, 'Home')");
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query.exec("insert into addresstype values(102, 'Work')");
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query.exec("insert into addresstype values(103, 'Other')");
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model = new QSqlRelationalTableModel(this);
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model->setTable("person");
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model->setEditStrategy(QSqlTableModel::OnManualSubmit);
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typeIndex = model->fieldIndex("typeid");
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model->setRelation(typeIndex,
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QSqlRelation("addresstype", "id", "description"));
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model->select();
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}
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//! [Set up the address type table]
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//! [Slot for updating the buttons]
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void Window::updateButtons(int row)
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{
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previousButton->setEnabled(row > 0);
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nextButton->setEnabled(row < model->rowCount() - 1);
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}
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//! [Slot for updating the buttons]
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