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diff --git a/src/datavis3d/data/qitemmodelbardataproxy.h b/src/datavis3d/data/qitemmodelbardataproxy.h
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+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc
+** All rights reserved.
+** For any questions to Digia, please use contact form at http://qt.digia.com
+**
+** This file is part of the QtDataVis3D module.
+**
+** Licensees holding valid Qt Enterprise licenses may use this file in
+** accordance with the Qt Enterprise License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.
+**
+** If you have questions regarding the use of this file, please use
+** contact form at http://qt.digia.com
+**
+****************************************************************************/
+
+#ifndef QITEMMODELBARDATAPROXY_H
+#define QITEMMODELBARDATAPROXY_H
+
+#include <QtDataVis3D/qbardataproxy.h>
+#include <QtDataVis3D/qitemmodelbardatamapping.h>
+#include <QAbstractItemModel>
+#include <QStringList>
+
+QT_DATAVIS3D_BEGIN_NAMESPACE
+
+class QItemModelBarDataProxyPrivate;
+
+class QT_DATAVIS3D_EXPORT QItemModelBarDataProxy : public QBarDataProxy
+{
+    Q_OBJECT
+
+public:
+    explicit QItemModelBarDataProxy();
+    explicit QItemModelBarDataProxy(QAbstractItemModel *itemModel, QItemModelBarDataMapping *mapping);
+    virtual ~QItemModelBarDataProxy();
+
+    // Doesn't gain ownership of the model, but does connect to it to listen for data changes.
+    void setItemModel(QAbstractItemModel *itemModel);
+    QAbstractItemModel *itemModel();
+
+    // Map bars role (row, column, value) to role in model.
+    // Doesn't gain ownership of mapping, but does connect to it to listen for mapping changes.
+    // Modifying mapping that is set to proxy will trigger dataset re-resolving.
+    void setMapping(QItemModelBarDataMapping *mapping);
+    QItemModelBarDataMapping *mapping();
+
+protected:
+    QItemModelBarDataProxyPrivate *dptr();
+
+private:
+    Q_DISABLE_COPY(QItemModelBarDataProxy)
+};
+
+QT_DATAVIS3D_END_NAMESPACE
+
+#endif