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diff --git a/src/declarative/qml/qmlglobalscriptclass.cpp b/src/declarative/qml/qmlglobalscriptclass.cpp
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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 QtDeclarative module 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.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qmlglobalscriptclass_p.h"
+#include <QtScript/qscriptstring.h>
+#include <QtScript/qscriptengine.h>
+#include <QtScript/qscriptvalueiterator.h>
+
+QT_BEGIN_NAMESPACE
+
+/*
+    Used to prevent any writes to the global object.
+*/
+QmlGlobalScriptClass::QmlGlobalScriptClass(QScriptEngine *engine)
+: QScriptClass(engine)
+{
+    QScriptValue v = engine->newObject();
+    globalObject = engine->globalObject();
+
+    QScriptValueIterator iter(globalObject);
+    while (iter.hasNext()) {
+        iter.next();
+        v.setProperty(iter.scriptName(), iter.value());
+    }
+
+    v.setScriptClass(this);
+    engine->setGlobalObject(v);
+}
+
+QScriptClass::QueryFlags 
+QmlGlobalScriptClass::queryProperty(const QScriptValue &object,
+                                    const QScriptString &name,
+                                    QueryFlags flags, uint *id)
+{
+    return HandlesReadAccess | HandlesWriteAccess;
+}
+
+QScriptValue 
+QmlGlobalScriptClass::property(const QScriptValue &object,
+                               const QScriptString &name, 
+                               uint id)
+{
+    return engine()->undefinedValue();
+}
+
+void QmlGlobalScriptClass::setProperty(QScriptValue &object, 
+                                       const QScriptString &name,
+                                       uint id, const QScriptValue &value)
+{
+    QString error = QLatin1String("Invalid write to global property \"") + 
+                    name.toString() + QLatin1String("\"");
+    engine()->currentContext()->throwError(error);
+}
+
+QT_END_NAMESPACE
+