--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/tools/i18n/languagechooser.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,167 @@
+/****************************************************************************
+**
+** 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 <QtGui>
+
+#include "languagechooser.h"
+#include "mainwindow.h"
+
+#ifdef Q_WS_MAC
+QT_BEGIN_NAMESPACE
+extern void qt_mac_set_menubar_merge(bool merge);
+QT_END_NAMESPACE
+#endif
+
+LanguageChooser::LanguageChooser(QWidget *parent)
+    : QDialog(parent, Qt::WindowStaysOnTopHint)
+{
+    groupBox = new QGroupBox("Languages");
+
+    QGridLayout *groupBoxLayout = new QGridLayout;
+
+    QStringList qmFiles = findQmFiles();
+    for (int i = 0; i < qmFiles.size(); ++i) {
+        QCheckBox *checkBox = new QCheckBox(languageName(qmFiles[i]));
+        qmFileForCheckBoxMap.insert(checkBox, qmFiles[i]);
+        connect(checkBox, SIGNAL(toggled(bool)), this, SLOT(checkBoxToggled()));
+        groupBoxLayout->addWidget(checkBox, i / 2, i % 2);
+    }
+    groupBox->setLayout(groupBoxLayout);
+
+    buttonBox = new QDialogButtonBox;
+
+    showAllButton = buttonBox->addButton("Show All",
+                                         QDialogButtonBox::ActionRole);
+    hideAllButton = buttonBox->addButton("Hide All",
+                                         QDialogButtonBox::ActionRole);
+
+    connect(showAllButton, SIGNAL(clicked()), this, SLOT(showAll()));
+    connect(hideAllButton, SIGNAL(clicked()), this, SLOT(hideAll()));
+
+    QVBoxLayout *mainLayout = new QVBoxLayout;
+    mainLayout->addWidget(groupBox);
+    mainLayout->addWidget(buttonBox);
+    setLayout(mainLayout);
+
+#ifdef Q_WS_MAC
+    qt_mac_set_menubar_merge(false);
+#endif
+
+    setWindowTitle("I18N");
+}
+
+bool LanguageChooser::eventFilter(QObject *object, QEvent *event)
+{
+    if (event->type() == QEvent::Close) {
+        MainWindow *window = qobject_cast<MainWindow *>(object);
+        if (window) {
+            QCheckBox *checkBox = mainWindowForCheckBoxMap.key(window);
+            if (checkBox)
+                checkBox->setChecked(false);
+        }
+    }
+    return QWidget::eventFilter(object, event);
+}
+
+void LanguageChooser::closeEvent(QCloseEvent * /* event */)
+{
+    qApp->quit();
+}
+
+void LanguageChooser::checkBoxToggled()
+{
+    QCheckBox *checkBox = qobject_cast<QCheckBox *>(sender());
+    MainWindow *window = mainWindowForCheckBoxMap[checkBox];
+    if (!window) {
+        QTranslator translator;
+        translator.load(qmFileForCheckBoxMap[checkBox]);
+        qApp->installTranslator(&translator);
+
+        window = new MainWindow;
+        window->setPalette(colorForLanguage(checkBox->text()));
+
+        window->installEventFilter(this);
+        mainWindowForCheckBoxMap.insert(checkBox, window);
+    }
+    window->setVisible(checkBox->isChecked());
+}
+
+void LanguageChooser::showAll()
+{
+    foreach (QCheckBox *checkBox, qmFileForCheckBoxMap.keys())
+        checkBox->setChecked(true);
+}
+
+void LanguageChooser::hideAll()
+{
+    foreach (QCheckBox *checkBox, qmFileForCheckBoxMap.keys())
+        checkBox->setChecked(false);
+}
+
+QStringList LanguageChooser::findQmFiles()
+{
+    QDir dir(":/translations");
+    QStringList fileNames = dir.entryList(QStringList("*.qm"), QDir::Files,
+                                          QDir::Name);
+    QMutableStringListIterator i(fileNames);
+    while (i.hasNext()) {
+        i.next();
+        i.setValue(dir.filePath(i.value()));
+    }
+    return fileNames;
+}
+
+QString LanguageChooser::languageName(const QString &qmFile)
+{
+    QTranslator translator;
+    translator.load(qmFile);
+
+    return translator.translate("MainWindow", "English");
+}
+
+QColor LanguageChooser::colorForLanguage(const QString &language)
+{
+    uint hashValue = qHash(language);
+    int red = 156 + (hashValue & 0x3F);
+    int green = 156 + ((hashValue >> 6) & 0x3F);
+    int blue = 156 + ((hashValue >> 12) & 0x3F);
+    return QColor(red, green, blue);
+}