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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the demonstration applications 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 either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
// krazy:excludeall=qclasses
#include "bookwindow.h"
#include "bookdelegate.h"
#include "bookwrapper.h"
#include "grantlee_paths.h"
#include "initdb.h"
#include <QDataWidgetMapper>
#include <QInputDialog>
#include <QMessageBox>
#include <grantlee_templates.h>
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");
// Rememeber 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"));
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(),
SIGNAL(currentRowChanged(QModelIndex, QModelIndex)), mapper,
SLOT(setCurrentModelIndex(QModelIndex)));
ui.bookTable->setCurrentIndex(model->index(0, 0));
ui.exportTheme->insertItems(0, QStringList() << "simple"
<< "coloured"
<< "simple2"
<< "coloured2");
connect(ui.exportButton, SIGNAL(pressed()), SLOT(renderBooks()));
m_engine = new Grantlee::Engine();
QSharedPointer<Grantlee::FileSystemTemplateLoader> loader
= QSharedPointer<Grantlee::FileSystemTemplateLoader>(
new Grantlee::FileSystemTemplateLoader());
loader->setTemplateDirs(QStringList() << GRANTLEE_TEMPLATE_PATH);
m_engine->addTemplateLoader(loader);
m_engine->setPluginPaths(QStringList() << GRANTLEE_PLUGIN_PATH);
}
void BookWindow::showError(const QSqlError &err)
{
QMessageBox::critical(this, "Unable to initialize Database",
"Error initializing database: " + err.text());
}
void BookWindow::renderBooks() const
{
int rows = model->rowCount();
QVariantHash mapping;
QVariantList bookList;
for (int row = 0; row < rows; ++row) {
QString title = model->index(row, 1).data().toString();
QString author = model->index(row, 2).data().toString();
QString genre = model->index(row, 3).data().toString();
int rating = model->index(row, 5).data().toInt();
QObject *book = new BookWrapper(author, title, genre, rating,
const_cast<BookWindow *>(this));
QVariant var = QVariant::fromValue(book);
bookList.append(var);
}
mapping.insert("books", bookList);
QString themeName = ui.exportTheme->currentText();
Grantlee::Context c(mapping);
Grantlee::Template t = m_engine->loadByName(themeName + ".html");
if (!t) {
QMessageBox::critical(
const_cast<BookWindow *>(this), "Unable to load template",
QString("Error loading template: %1").arg(themeName + ".html"));
return;
}
if (t->error()) {
QMessageBox::critical(
const_cast<BookWindow *>(this), "Unable to load template",
QString("Error loading template: %1").arg(t->errorString()));
return;
}
bool ok;
QString text = QInputDialog::getText(
const_cast<BookWindow *>(this), tr("Export Location"), tr("file name:"),
QLineEdit::Normal, QDir::home().absolutePath() + "/book_export.html",
&ok);
if (!ok || text.isEmpty())
return;
QFile file(text);
if (!file.open(QIODevice::WriteOnly | QIODevice::Text))
return;
QString content = t->render(&c);
if (t->error()) {
QMessageBox::critical(
const_cast<BookWindow *>(this), "Unable render template",
QString("Error rendering template: %1").arg(t->errorString()));
return;
}
file.write(content.toLocal8Bit());
file.close();
}
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