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diff --git a/src/declarative/qml/qmlexpression.h b/src/declarative/qml/qmlexpression.h
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+/****************************************************************************
+**
+** 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 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 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QMLEXPRESSION_H
+#define QMLEXPRESSION_H
+
+#include "qmlerror.h"
+
+#include <QtCore/qobject.h>
+#include <QtCore/qvariant.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Declarative)
+
+class QString;
+class QmlRefCount;
+class QmlEngine;
+class QmlContext;
+class QmlExpressionPrivate;
+class Q_DECLARATIVE_EXPORT QmlExpression : public QObject
+{
+    Q_OBJECT
+public:
+    QmlExpression();
+    QmlExpression(QmlContext *, const QString &, QObject *);
+    virtual ~QmlExpression();
+
+    QmlEngine *engine() const;
+    QmlContext *context() const;
+
+    QString expression() const;
+    void clearExpression();
+    virtual void setExpression(const QString &);
+    bool isConstant() const;
+
+    bool trackChange() const;
+    void setTrackChange(bool);
+
+    QString sourceFile() const;
+    int lineNumber() const;
+    void setSourceLocation(const QString &fileName, int line);
+
+    QObject *scopeObject() const;
+
+    bool hasError() const;
+    void clearError();
+    QmlError error() const;
+
+public Q_SLOTS:
+    QVariant value(bool *isUndefined = 0);
+
+Q_SIGNALS:
+    void valueChanged();
+
+protected:
+    virtual void emitValueChanged();
+
+    QmlExpression(QmlContext *, const QString &, QObject *, 
+                  QmlExpressionPrivate &dd);
+    QmlExpression(QmlContext *, void *, QmlRefCount *rc, QObject *me, const QString &,
+                  int, QmlExpressionPrivate &dd);
+
+private Q_SLOTS:
+    void __q_notify();
+
+private:
+    Q_DECLARE_PRIVATE(QmlExpression)
+    friend class QmlDebugger;
+    friend class QmlContext;
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QMLEXPRESSION_H
+