1 files changed, 171 insertions, 0 deletions
diff --git a/sources/pyside6/doc/tutorials/portingguide/chapter3/bookwindow.cpp b/sources/pyside6/doc/tutorials/portingguide/chapter3/bookwindow.cpp
new file mode 100644
index 000000000..76f3c9da8
--- /dev/null
+++ b/sources/pyside6/doc/tutorials/portingguide/chapter3/bookwindow.cpp
@@ -0,0 +1,171 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the demonstration applications 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 "bookwindow.h"
+#include "bookdelegate.h"
+#include "initdb.h"
+
+#include <QtSql>
+
+BookWindow::BookWindow()
+{
+    ui.setupUi(this);
+
+    if (!QSqlDatabase::drivers().contains("QSQLITE"))
+        QMessageBox::critical(
+                    this,
+                    "Unable to load database",
+                    "This demo needs the SQLITE driver"
+                    );
+
+    // Initialize the database:
+    QSqlError err = initDb();
+    if (err.type() != QSqlError::NoError) {
+        showError(err);
+        return;
+    }
+
+    // Create the data model:
+    model = new QSqlRelationalTableModel(ui.bookTable);
+    model->setEditStrategy(QSqlTableModel::OnManualSubmit);
+    model->setTable("books");
+
+    // Remember the indexes of the columns:
+    authorIdx = model->fieldIndex("author");
+    genreIdx = model->fieldIndex("genre");
+
+    // Set the relations to the other database tables:
+    model->setRelation(authorIdx, QSqlRelation("authors", "id", "name"));
+    model->setRelation(genreIdx, QSqlRelation("genres", "id", "name"));
+
+    // Set the localized header captions:
+    model->setHeaderData(authorIdx, Qt::Horizontal, tr("Author Name"));
+    model->setHeaderData(genreIdx, Qt::Horizontal, tr("Genre"));
+    model->setHeaderData(model->fieldIndex("title"),
+                         Qt::Horizontal, tr("Title"));
+    model->setHeaderData(model->fieldIndex("year"), Qt::Horizontal, tr("Year"));
+    model->setHeaderData(model->fieldIndex("rating"),
+                         Qt::Horizontal, tr("Rating"));
+
+    // Populate the model:
+    if (!model->select()) {
+        showError(model->lastError());
+        return;
+    }
+
+    // Set the model and hide the ID column:
+    ui.bookTable->setModel(model);
+    ui.bookTable->setItemDelegate(new BookDelegate(ui.bookTable));
+    ui.bookTable->setColumnHidden(model->fieldIndex("id"), true);
+    ui.bookTable->setSelectionMode(QAbstractItemView::SingleSelection);
+
+    // Initialize the Author combo box:
+    ui.authorEdit->setModel(model->relationModel(authorIdx));
+    ui.authorEdit->setModelColumn(
+                model->relationModel(authorIdx)->fieldIndex("name"));
+
+    ui.genreEdit->setModel(model->relationModel(genreIdx));
+    ui.genreEdit->setModelColumn(
+                model->relationModel(genreIdx)->fieldIndex("name"));
+
+    // Lock and prohibit resizing of the width of the rating column:
+    ui.bookTable->horizontalHeader()->setSectionResizeMode(
+                model->fieldIndex("rating"),
+                QHeaderView::ResizeToContents);
+
+    QDataWidgetMapper *mapper = new QDataWidgetMapper(this);
+    mapper->setModel(model);
+    mapper->setItemDelegate(new BookDelegate(this));
+    mapper->addMapping(ui.titleEdit, model->fieldIndex("title"));
+    mapper->addMapping(ui.yearEdit, model->fieldIndex("year"));
+    mapper->addMapping(ui.authorEdit, authorIdx);
+    mapper->addMapping(ui.genreEdit, genreIdx);
+    mapper->addMapping(ui.ratingEdit, model->fieldIndex("rating"));
+
+    connect(ui.bookTable->selectionModel(),
+            &QItemSelectionModel::currentRowChanged,
+            mapper,
+            &QDataWidgetMapper::setCurrentModelIndex
+            );
+
+    ui.bookTable->setCurrentIndex(model->index(0, 0));
+    createMenuBar();
+}
+
+void BookWindow::showError(const QSqlError &err)
+{
+    QMessageBox::critical(this, "Unable to initialize Database",
+                "Error initializing database: " + err.text());
+}
+
+void BookWindow::createMenuBar()
+{
+    QAction *quitAction = new QAction(tr("&Quit"), this);
+    QAction *aboutAction = new QAction(tr("&About"), this);
+    QAction *aboutQtAction = new QAction(tr("&About Qt"), this);
+
+    QMenu *fileMenu = menuBar()->addMenu(tr("&File"));
+    fileMenu->addAction(quitAction);
+
+    QMenu *helpMenu = menuBar()->addMenu(tr("&Help"));
+    helpMenu->addAction(aboutAction);
+    helpMenu->addAction(aboutQtAction);
+
+    connect(quitAction, &QAction::triggered, this, &BookWindow::close);
+    connect(aboutAction, &QAction::triggered, this, &BookWindow::about);
+    connect(aboutQtAction, &QAction::triggered, qApp, &QApplication::aboutQt);
+}
+
+void BookWindow::about()
+{
+    QMessageBox::about(this, tr("About Books"),
+            tr("<p>The <b>Books</b> example shows how to use Qt SQL classes "
+               "with a model/view framework."));
+}