c158f881b3
The Qt version was added in 5.14 "for use as eventual replacement for QString::SplitBehavior." Move another step closer to that goal. Applied suitable wrapping round various char and string literals, since docs are meant to show best practice. Change-Id: Ie061905fad26f9b4dda3eedba4612704f0a19126 Reviewed-by: Lars Knoll <lars.knoll@qt.io>
293 lines
9.0 KiB
C++
293 lines
9.0 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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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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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** 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 The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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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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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "dialog.h"
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int uniqueAlbumId;
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int uniqueArtistId;
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Dialog::Dialog(QSqlRelationalTableModel *albums, QDomDocument details,
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QFile *output, QWidget *parent)
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: QDialog(parent)
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{
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model = albums;
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albumDetails = details;
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outputFile = output;
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QGroupBox *inputWidgetBox = createInputWidgets();
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QDialogButtonBox *buttonBox = createButtons();
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QVBoxLayout *layout = new QVBoxLayout;
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layout->addWidget(inputWidgetBox);
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layout->addWidget(buttonBox);
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setLayout(layout);
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setWindowTitle(tr("Add Album"));
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}
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void Dialog::submit()
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{
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QString artist = artistEditor->text();
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QString title = titleEditor->text();
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if (artist.isEmpty() || title.isEmpty()) {
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QString message(tr("Please provide both the name of the artist "
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"and the title of the album."));
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QMessageBox::information(this, tr("Add Album"), message);
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} else {
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int artistId = findArtistId(artist);
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int albumId = addNewAlbum(title, artistId);
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QStringList tracks;
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tracks = tracksEditor->text().split(QLatin1Char(','), Qt::SkipEmptyParts);
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addTracks(albumId, tracks);
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increaseAlbumCount(indexOfArtist(artist));
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accept();
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}
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}
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int Dialog::findArtistId(const QString &artist)
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{
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QSqlTableModel *artistModel = model->relationModel(2);
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int row = 0;
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while (row < artistModel->rowCount()) {
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QSqlRecord record = artistModel->record(row);
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if (record.value("artist") == artist)
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return record.value("id").toInt();
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else
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row++;
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}
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return addNewArtist(artist);
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}
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int Dialog::addNewArtist(const QString &name)
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{
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QSqlTableModel *artistModel = model->relationModel(2);
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QSqlRecord record;
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int id = generateArtistId();
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QSqlField f1("id", QVariant::Int);
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QSqlField f2("artist", QVariant::String);
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QSqlField f3("albumcount", QVariant::Int);
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f1.setValue(QVariant(id));
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f2.setValue(QVariant(name));
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f3.setValue(QVariant(0));
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record.append(f1);
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record.append(f2);
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record.append(f3);
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artistModel->insertRecord(-1, record);
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return id;
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}
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int Dialog::addNewAlbum(const QString &title, int artistId)
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{
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int id = generateAlbumId();
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QSqlRecord record;
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QSqlField f1("albumid", QVariant::Int);
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QSqlField f2("title", QVariant::String);
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QSqlField f3("artistid", QVariant::Int);
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QSqlField f4("year", QVariant::Int);
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f1.setValue(QVariant(id));
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f2.setValue(QVariant(title));
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f3.setValue(QVariant(artistId));
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f4.setValue(QVariant(yearEditor->value()));
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record.append(f1);
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record.append(f2);
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record.append(f3);
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record.append(f4);
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model->insertRecord(-1, record);
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return id;
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}
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void Dialog::addTracks(int albumId, const QStringList &tracks)
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{
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QDomElement albumNode = albumDetails.createElement("album");
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albumNode.setAttribute("id", albumId);
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for (int i = 0; i < tracks.count(); ++i) {
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QString trackNumber = QString::number(i);
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if (i < 10)
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trackNumber.prepend('0');
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QDomText textNode = albumDetails.createTextNode(tracks.at(i));
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QDomElement trackNode = albumDetails.createElement("track");
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trackNode.setAttribute("number", trackNumber);
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trackNode.appendChild(textNode);
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albumNode.appendChild(trackNode);
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}
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QDomNodeList archive = albumDetails.elementsByTagName("archive");
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archive.item(0).appendChild(albumNode);
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/*
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The following code is commented out since the example uses an in
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memory database, i.e., altering the XML file will bring the data
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out of sync.
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if (!outputFile->open(QIODevice::WriteOnly)) {
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return;
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} else {
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QTextStream stream(outputFile);
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archive.item(0).save(stream, 4);
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outputFile->close();
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}
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*/
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}
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void Dialog::increaseAlbumCount(QModelIndex artistIndex)
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{
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QSqlTableModel *artistModel = model->relationModel(2);
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QModelIndex albumCountIndex;
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albumCountIndex = artistIndex.sibling(artistIndex.row(), 2);
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int albumCount = albumCountIndex.data().toInt();
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artistModel->setData(albumCountIndex, QVariant(albumCount + 1));
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}
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void Dialog::revert()
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{
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artistEditor->clear();
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titleEditor->clear();
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yearEditor->setValue(QDate::currentDate().year());
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tracksEditor->clear();
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}
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QGroupBox *Dialog::createInputWidgets()
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{
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QGroupBox *box = new QGroupBox(tr("Add Album"));
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QLabel *artistLabel = new QLabel(tr("Artist:"));
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QLabel *titleLabel = new QLabel(tr("Title:"));
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QLabel *yearLabel = new QLabel(tr("Year:"));
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QLabel *tracksLabel = new QLabel(tr("Tracks (separated by comma):"));
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artistEditor = new QLineEdit;
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titleEditor = new QLineEdit;
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yearEditor = new QSpinBox;
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yearEditor->setMinimum(1900);
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yearEditor->setMaximum(QDate::currentDate().year());
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yearEditor->setValue(yearEditor->maximum());
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yearEditor->setReadOnly(false);
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tracksEditor = new QLineEdit;
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QGridLayout *layout = new QGridLayout;
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layout->addWidget(artistLabel, 0, 0);
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layout->addWidget(artistEditor, 0, 1);
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layout->addWidget(titleLabel, 1, 0);
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layout->addWidget(titleEditor, 1, 1);
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layout->addWidget(yearLabel, 2, 0);
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layout->addWidget(yearEditor, 2, 1);
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layout->addWidget(tracksLabel, 3, 0, 1, 2);
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layout->addWidget(tracksEditor, 4, 0, 1, 2);
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box->setLayout(layout);
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return box;
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}
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QDialogButtonBox *Dialog::createButtons()
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{
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QPushButton *closeButton = new QPushButton(tr("&Close"));
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QPushButton *revertButton = new QPushButton(tr("&Revert"));
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QPushButton *submitButton = new QPushButton(tr("&Submit"));
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closeButton->setDefault(true);
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connect(closeButton, &QPushButton::clicked, this, &Dialog::close);
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connect(revertButton, &QPushButton::clicked, this, &Dialog::revert);
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connect(submitButton, &QPushButton::clicked, this, &Dialog::submit);
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QDialogButtonBox *buttonBox = new QDialogButtonBox;
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buttonBox->addButton(submitButton, QDialogButtonBox::ResetRole);
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buttonBox->addButton(revertButton, QDialogButtonBox::ResetRole);
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buttonBox->addButton(closeButton, QDialogButtonBox::RejectRole);
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return buttonBox;
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}
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QModelIndex Dialog::indexOfArtist(const QString &artist)
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{
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QSqlTableModel *artistModel = model->relationModel(2);
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for (int i = 0; i < artistModel->rowCount(); ++i) {
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QSqlRecord record = artistModel->record(i);
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if (record.value("artist") == artist)
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return artistModel->index(i, 1);
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}
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return QModelIndex();
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}
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int Dialog::generateArtistId()
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{
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uniqueArtistId += 1;
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return uniqueArtistId;
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}
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int Dialog::generateAlbumId()
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{
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uniqueAlbumId += 1;
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return uniqueAlbumId;
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}
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