qt5base-lts/examples/sql/drilldown/informationwindow.cpp

/****************************************************************************
**
** Copyright (C) 2011 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.
**
** $QT_BEGIN_LICENSE:BSD$
** 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 Nokia Corporation and its Subsidiary(-ies) 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 "informationwindow.h"

//! [0]
InformationWindow::InformationWindow(int id, QSqlRelationalTableModel *offices,
                                     QWidget *parent)
    : QDialog(parent)
{
//! [0] //! [1]
    QLabel *locationLabel = new QLabel(tr("Location: "));
    QLabel *countryLabel = new QLabel(tr("Country: "));
    QLabel *descriptionLabel = new QLabel(tr("Description: "));
    QLabel *imageFileLabel = new QLabel(tr("Image file: "));

    createButtons();

    locationText = new QLabel;
    countryText = new QLabel;
    descriptionEditor = new QTextEdit;
//! [1]

//! [2]
    imageFileEditor = new QComboBox;
    imageFileEditor->setModel(offices->relationModel(1));
    imageFileEditor->setModelColumn(offices->relationModel(1)->fieldIndex("file"));
//! [2]

//! [3]
    mapper = new QDataWidgetMapper(this);
    mapper->setModel(offices);
    mapper->setSubmitPolicy(QDataWidgetMapper::ManualSubmit);
    mapper->setItemDelegate(new QSqlRelationalDelegate(mapper));
    mapper->addMapping(imageFileEditor, 1);
    mapper->addMapping(locationText, 2, "text");
    mapper->addMapping(countryText, 3, "text");
    mapper->addMapping(descriptionEditor, 4);
    mapper->setCurrentIndex(id);
//! [3]

//! [4]
    connect(descriptionEditor, SIGNAL(textChanged()),
            this, SLOT(enableButtons()));
    connect(imageFileEditor, SIGNAL(currentIndexChanged(int)),
            this, SLOT(enableButtons()));

    QFormLayout *formLayout = new QFormLayout;
    formLayout->addRow(locationLabel, locationText);
    formLayout->addRow(countryLabel, countryText);
    formLayout->addRow(imageFileLabel, imageFileEditor);
    formLayout->addRow(descriptionLabel, descriptionEditor);

    QVBoxLayout *layout = new QVBoxLayout;
    layout->addLayout(formLayout);
    layout->addWidget(buttonBox);
    setLayout(layout);

    locationId = id;
    displayedImage = imageFileEditor->currentText();

    // Commented the following line. Now the window will look like dialog and the Qt will place the QDialogBox buttons to menu area in Symbian.
    // Too bad that the revert button is missing, Should the Qt place the buttons under Option menu in the menu area?!
    // If the Qt::Window flag was used, the background of window is white in symbian and the QLabels can't be regognized from the background.

    //setWindowFlags(Qt::Window);
    enableButtons(false);
    setWindowTitle(tr("Office: %1").arg(locationText->text()));
}
//! [4]

//! [5]
int InformationWindow::id()
{
    return locationId;
}
//! [5]

//! [6]
void InformationWindow::revert()
{
    mapper->revert();
    enableButtons(false);
}
//! [6]

//! [7]
void InformationWindow::submit()
{
    QString newImage(imageFileEditor->currentText());

    if (displayedImage != newImage) {
        displayedImage = newImage;
        emit imageChanged(locationId, newImage);
    }

    mapper->submit();
    mapper->setCurrentIndex(locationId);

    enableButtons(false);
}
//! [7]

//! [8]
void InformationWindow::createButtons()
{
    closeButton = new QPushButton(tr("&Close"));
    revertButton = new QPushButton(tr("&Revert"));
    submitButton = new QPushButton(tr("&Submit"));

    closeButton->setDefault(true);

    connect(closeButton, SIGNAL(clicked()), this, SLOT(close()));
    connect(revertButton, SIGNAL(clicked()), this, SLOT(revert()));
    connect(submitButton, SIGNAL(clicked()), this, SLOT(submit()));
//! [8]

//! [9]
    buttonBox = new QDialogButtonBox(this);
    buttonBox->addButton(submitButton, QDialogButtonBox::AcceptRole);
    buttonBox->addButton(revertButton, QDialogButtonBox::ResetRole);
    buttonBox->addButton(closeButton, QDialogButtonBox::RejectRole);
}
//! [9]

//! [10]
void InformationWindow::enableButtons(bool enable)
{
    revertButton->setEnabled(enable);
    submitButton->setEnabled(enable);
}
//! [10]