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-rw-r--r--demos/sqlbrowser/browser.cpp247
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diff --git a/demos/sqlbrowser/browser.cpp b/demos/sqlbrowser/browser.cpp
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-/****************************************************************************
-**
-** 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 demonstration applications of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** GNU Lesser General Public License Usage
-** 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.
-**
-** 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.
-**
-** Other Usage
-** Alternatively, this file may be used in accordance with the terms and
-** conditions contained in a signed written agreement between you and Nokia.
-**
-**
-**
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "browser.h"
-#include "qsqlconnectiondialog.h"
-
-#include <QtGui>
-#include <QtSql>
-
-Browser::Browser(QWidget *parent)
- : QWidget(parent)
-{
- setupUi(this);
-
- table->addAction(insertRowAction);
- table->addAction(deleteRowAction);
-
- if (QSqlDatabase::drivers().isEmpty())
- QMessageBox::information(this, tr("No database drivers found"),
- tr("This demo requires at least one Qt database driver. "
- "Please check the documentation how to build the "
- "Qt SQL plugins."));
-
- emit statusMessage(tr("Ready."));
-}
-
-Browser::~Browser()
-{
-}
-
-void Browser::exec()
-{
- QSqlQueryModel *model = new QSqlQueryModel(table);
- model->setQuery(QSqlQuery(sqlEdit->toPlainText(), connectionWidget->currentDatabase()));
- table->setModel(model);
-
- if (model->lastError().type() != QSqlError::NoError)
- emit statusMessage(model->lastError().text());
- else if (model->query().isSelect())
- emit statusMessage(tr("Query OK."));
- else
- emit statusMessage(tr("Query OK, number of affected rows: %1").arg(
- model->query().numRowsAffected()));
-
- updateActions();
-}
-
-QSqlError Browser::addConnection(const QString &driver, const QString &dbName, const QString &host,
- const QString &user, const QString &passwd, int port)
-{
- static int cCount = 0;
-
- QSqlError err;
- QSqlDatabase db = QSqlDatabase::addDatabase(driver, QString("Browser%1").arg(++cCount));
- db.setDatabaseName(dbName);
- db.setHostName(host);
- db.setPort(port);
- if (!db.open(user, passwd)) {
- err = db.lastError();
- db = QSqlDatabase();
- QSqlDatabase::removeDatabase(QString("Browser%1").arg(cCount));
- }
- connectionWidget->refresh();
-
- return err;
-}
-
-void Browser::addConnection()
-{
- QSqlConnectionDialog dialog(this);
- if (dialog.exec() != QDialog::Accepted)
- return;
-
- if (dialog.useInMemoryDatabase()) {
- QSqlDatabase::database("in_mem_db", false).close();
- QSqlDatabase::removeDatabase("in_mem_db");
- QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE", "in_mem_db");
- db.setDatabaseName(":memory:");
- if (!db.open())
- QMessageBox::warning(this, tr("Unable to open database"), tr("An error occurred while "
- "opening the connection: ") + db.lastError().text());
- QSqlQuery q("", db);
- q.exec("drop table Movies");
- q.exec("drop table Names");
- q.exec("create table Movies (id integer primary key, Title varchar, Director varchar, Rating number)");
- q.exec("insert into Movies values (0, 'Metropolis', 'Fritz Lang', '8.4')");
- q.exec("insert into Movies values (1, 'Nosferatu, eine Symphonie des Grauens', 'F.W. Murnau', '8.1')");
- q.exec("insert into Movies values (2, 'Bis ans Ende der Welt', 'Wim Wenders', '6.5')");
- q.exec("insert into Movies values (3, 'Hardware', 'Richard Stanley', '5.2')");
- q.exec("insert into Movies values (4, 'Mitchell', 'Andrew V. McLaglen', '2.1')");
- q.exec("create table Names (id integer primary key, Firstname varchar, Lastname varchar, City varchar)");
- q.exec("insert into Names values (0, 'Sala', 'Palmer', 'Morristown')");
- q.exec("insert into Names values (1, 'Christopher', 'Walker', 'Morristown')");
- q.exec("insert into Names values (2, 'Donald', 'Duck', 'Andeby')");
- q.exec("insert into Names values (3, 'Buck', 'Rogers', 'Paris')");
- q.exec("insert into Names values (4, 'Sherlock', 'Holmes', 'London')");
- connectionWidget->refresh();
- } else {
- QSqlError err = addConnection(dialog.driverName(), dialog.databaseName(), dialog.hostName(),
- dialog.userName(), dialog.password(), dialog.port());
- if (err.type() != QSqlError::NoError)
- QMessageBox::warning(this, tr("Unable to open database"), tr("An error occurred while "
- "opening the connection: ") + err.text());
- }
-}
-
-void Browser::showTable(const QString &t)
-{
- QSqlTableModel *model = new QSqlTableModel(table, connectionWidget->currentDatabase());
- model->setEditStrategy(QSqlTableModel::OnRowChange);
- model->setTable(connectionWidget->currentDatabase().driver()->escapeIdentifier(t, QSqlDriver::TableName));
- model->select();
- if (model->lastError().type() != QSqlError::NoError)
- emit statusMessage(model->lastError().text());
- table->setModel(model);
- table->setEditTriggers(QAbstractItemView::DoubleClicked|QAbstractItemView::EditKeyPressed);
-
- connect(table->selectionModel(), SIGNAL(currentRowChanged(QModelIndex,QModelIndex)),
- this, SLOT(currentChanged()));
- updateActions();
-}
-
-void Browser::showMetaData(const QString &t)
-{
- QSqlRecord rec = connectionWidget->currentDatabase().record(t);
- QStandardItemModel *model = new QStandardItemModel(table);
-
- model->insertRows(0, rec.count());
- model->insertColumns(0, 7);
-
- model->setHeaderData(0, Qt::Horizontal, "Fieldname");
- model->setHeaderData(1, Qt::Horizontal, "Type");
- model->setHeaderData(2, Qt::Horizontal, "Length");
- model->setHeaderData(3, Qt::Horizontal, "Precision");
- model->setHeaderData(4, Qt::Horizontal, "Required");
- model->setHeaderData(5, Qt::Horizontal, "AutoValue");
- model->setHeaderData(6, Qt::Horizontal, "DefaultValue");
-
-
- for (int i = 0; i < rec.count(); ++i) {
- QSqlField fld = rec.field(i);
- model->setData(model->index(i, 0), fld.name());
- model->setData(model->index(i, 1), fld.typeID() == -1
- ? QString(QVariant::typeToName(fld.type()))
- : QString("%1 (%2)").arg(QVariant::typeToName(fld.type())).arg(fld.typeID()));
- model->setData(model->index(i, 2), fld.length());
- model->setData(model->index(i, 3), fld.precision());
- model->setData(model->index(i, 4), fld.requiredStatus() == -1 ? QVariant("?")
- : QVariant(bool(fld.requiredStatus())));
- model->setData(model->index(i, 5), fld.isAutoValue());
- model->setData(model->index(i, 6), fld.defaultValue());
- }
-
- table->setModel(model);
- table->setEditTriggers(QAbstractItemView::NoEditTriggers);
-
- updateActions();
-}
-
-void Browser::insertRow()
-{
- QSqlTableModel *model = qobject_cast<QSqlTableModel *>(table->model());
- if (!model)
- return;
-
- QModelIndex insertIndex = table->currentIndex();
- int row = insertIndex.row() == -1 ? 0 : insertIndex.row();
- model->insertRow(row);
- insertIndex = model->index(row, 0);
- table->setCurrentIndex(insertIndex);
- table->edit(insertIndex);
-}
-
-void Browser::deleteRow()
-{
- QSqlTableModel *model = qobject_cast<QSqlTableModel *>(table->model());
- if (!model)
- return;
-
- model->setEditStrategy(QSqlTableModel::OnManualSubmit);
-
- QModelIndexList currentSelection = table->selectionModel()->selectedIndexes();
- for (int i = 0; i < currentSelection.count(); ++i) {
- if (currentSelection.at(i).column() != 0)
- continue;
- model->removeRow(currentSelection.at(i).row());
- }
-
- model->submitAll();
- model->setEditStrategy(QSqlTableModel::OnRowChange);
-
- updateActions();
-}
-
-void Browser::updateActions()
-{
- bool enableIns = qobject_cast<QSqlTableModel *>(table->model());
- bool enableDel = enableIns && table->currentIndex().isValid();
-
- insertRowAction->setEnabled(enableIns);
- deleteRowAction->setEnabled(enableDel);
-}
-
-void Browser::about()
-{
- QMessageBox::about(this, tr("About"), tr("The SQL Browser demonstration "
- "shows how a data browser can be used to visualize the results of SQL"
- "statements on a live database"));
-}
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