--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/sql/masterdetail/dialog.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,283 @@
+/****************************************************************************
+**
+** 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 "dialog.h"
+
+int uniqueAlbumId;
+int uniqueArtistId;
+
+Dialog::Dialog(QSqlRelationalTableModel *albums, QDomDocument details,
+ QFile *output, QWidget *parent)
+ : QDialog(parent)
+{
+ model = albums;
+ albumDetails = details;
+ outputFile = output;
+
+ QGroupBox *inputWidgetBox = createInputWidgets();
+ QDialogButtonBox *buttonBox = createButtons();
+
+ QVBoxLayout *layout = new QVBoxLayout;
+ layout->addWidget(inputWidgetBox);
+ layout->addWidget(buttonBox);
+ setLayout(layout);
+
+ setWindowTitle(tr("Add Album"));
+}
+
+void Dialog::submit()
+{
+ QString artist = artistEditor->text();
+ QString title = titleEditor->text();
+
+ if (artist.isEmpty() || title.isEmpty()) {
+ QString message(tr("Please provide both the name of the artist "
+ "and the title of the album."));
+ QMessageBox::information(this, tr("Add Album"), message);
+ } else {
+ int artistId = findArtistId(artist);
+ int albumId = addNewAlbum(title, artistId);
+
+ QStringList tracks;
+ tracks = tracksEditor->text().split(',', QString::SkipEmptyParts);
+ addTracks(albumId, tracks);
+
+ increaseAlbumCount(indexOfArtist(artist));
+ accept();
+ }
+}
+
+int Dialog::findArtistId(const QString &artist)
+{
+ QSqlTableModel *artistModel = model->relationModel(2);
+ int row = 0;
+
+ while (row < artistModel->rowCount()) {
+ QSqlRecord record = artistModel->record(row);
+ if (record.value("artist") == artist)
+ return record.value("id").toInt();
+ else
+ row++;
+ }
+ return addNewArtist(artist);
+}
+
+
+int Dialog::addNewArtist(const QString &name)
+{
+ QSqlTableModel *artistModel = model->relationModel(2);
+ QSqlRecord record;
+
+ int id = generateArtistId();
+
+ QSqlField f1("id", QVariant::Int);
+ QSqlField f2("artist", QVariant::String);
+ QSqlField f3("albumcount", QVariant::Int);
+
+ f1.setValue(QVariant(id));
+ f2.setValue(QVariant(name));
+ f3.setValue(QVariant(0));
+ record.append(f1);
+ record.append(f2);
+ record.append(f3);
+
+ artistModel->insertRecord(-1, record);
+ return id;
+}
+
+int Dialog::addNewAlbum(const QString &title, int artistId)
+{
+ int id = generateAlbumId();
+ QSqlRecord record;
+
+ QSqlField f1("albumid", QVariant::Int);
+ QSqlField f2("title", QVariant::String);
+ QSqlField f3("artistid", QVariant::Int);
+ QSqlField f4("year", QVariant::Int);
+
+ f1.setValue(QVariant(id));
+ f2.setValue(QVariant(title));
+ f3.setValue(QVariant(artistId));
+ f4.setValue(QVariant(yearEditor->value()));
+ record.append(f1);
+ record.append(f2);
+ record.append(f3);
+ record.append(f4);
+
+ model->insertRecord(-1, record);
+ return id;
+}
+
+void Dialog::addTracks(int albumId, QStringList tracks)
+{
+ QDomElement albumNode = albumDetails.createElement("album");
+ albumNode.setAttribute("id", albumId);
+
+ for (int i = 0; i < tracks.count(); i++) {
+ QString trackNumber = QString::number(i);
+ if (i < 10)
+ trackNumber.prepend("0");
+
+ QDomText textNode = albumDetails.createTextNode(tracks.at(i));
+
+ QDomElement trackNode = albumDetails.createElement("track");
+ trackNode.setAttribute("number", trackNumber);
+ trackNode.appendChild(textNode);
+
+ albumNode.appendChild(trackNode);
+ }
+
+ QDomNodeList archive = albumDetails.elementsByTagName("archive");
+ archive.item(0).appendChild(albumNode);
+
+/*
+ The following code is commented out since the example uses an in
+ memory database, i.e., altering the XML file will bring the data
+ out of sync.
+
+ if (!outputFile->open(QIODevice::WriteOnly)) {
+ return;
+ } else {
+ QTextStream stream(outputFile);
+ archive.item(0).save(stream, 4);
+ outputFile->close();
+ }
+*/
+}
+
+void Dialog::increaseAlbumCount(QModelIndex artistIndex)
+{
+ QSqlTableModel *artistModel = model->relationModel(2);
+
+ QModelIndex albumCountIndex;
+ albumCountIndex = artistIndex.sibling(artistIndex.row(), 2);
+
+ int albumCount = albumCountIndex.data().toInt();
+ artistModel->setData(albumCountIndex, QVariant(albumCount + 1));
+}
+
+
+void Dialog::revert()
+{
+ artistEditor->clear();
+ titleEditor->clear();
+ yearEditor->setValue(QDate::currentDate().year());
+ tracksEditor->clear();
+}
+
+QGroupBox *Dialog::createInputWidgets()
+{
+ QGroupBox *box = new QGroupBox(tr("Add Album"));
+
+ QLabel *artistLabel = new QLabel(tr("Artist:"));
+ QLabel *titleLabel = new QLabel(tr("Title:"));
+ QLabel *yearLabel = new QLabel(tr("Year:"));
+ QLabel *tracksLabel = new QLabel(tr("Tracks (separated by comma):"));
+
+ artistEditor = new QLineEdit;
+ titleEditor = new QLineEdit;
+
+ yearEditor = new QSpinBox;
+ yearEditor->setMinimum(1900);
+ yearEditor->setMaximum(QDate::currentDate().year());
+ yearEditor->setValue(yearEditor->maximum());
+ yearEditor->setReadOnly(false);
+
+ tracksEditor = new QLineEdit;
+
+ QGridLayout *layout = new QGridLayout;
+ layout->addWidget(artistLabel, 0, 0);
+ layout->addWidget(artistEditor, 0, 1);
+ layout->addWidget(titleLabel, 1, 0);
+ layout->addWidget(titleEditor, 1, 1);
+ layout->addWidget(yearLabel, 2, 0);
+ layout->addWidget(yearEditor, 2, 1);
+ layout->addWidget(tracksLabel, 3, 0, 1, 2);
+ layout->addWidget(tracksEditor, 4, 0, 1, 2);
+ box->setLayout(layout);
+
+ return box;
+}
+
+QDialogButtonBox *Dialog::createButtons()
+{
+ QPushButton *closeButton = new QPushButton(tr("&Close"));
+ QPushButton *revertButton = new QPushButton(tr("&Revert"));
+ QPushButton *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()));
+
+ QDialogButtonBox *buttonBox = new QDialogButtonBox;
+ buttonBox->addButton(submitButton, QDialogButtonBox::ResetRole);
+ buttonBox->addButton(revertButton, QDialogButtonBox::ResetRole);
+ buttonBox->addButton(closeButton, QDialogButtonBox::RejectRole);
+
+ return buttonBox;
+}
+
+QModelIndex Dialog::indexOfArtist(const QString &artist)
+{
+ QSqlTableModel *artistModel = model->relationModel(2);
+
+ for (int i = 0; i < artistModel->rowCount(); i++) {
+ QSqlRecord record = artistModel->record(i);
+ if (record.value("artist") == artist)
+ return artistModel->index(i, 1);
+ }
+
+ return QModelIndex();
+}
+
+int Dialog::generateArtistId()
+{
+ uniqueArtistId += 1;
+ return uniqueArtistId;
+}
+
+int Dialog::generateAlbumId()
+{
+ uniqueAlbumId += 1;
+ return uniqueAlbumId;
+}