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diff --git a/src/libs/installer/componentmodel.h b/src/libs/installer/componentmodel.h
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+/**************************************************************************
+**
+** This file is part of Installer Framework
+**
+** Copyright (c) 2010-2012 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+**
+** 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.
+**
+** 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**************************************************************************/
+
+#ifndef COMPONENTMODEL_H
+#define COMPONENTMODEL_H
+
+#include "qinstallerglobal.h"
+
+#include <QtCore/QAbstractItemModel>
+#include <QtCore/QList>
+#include <QtCore/QSet>
+#include <QtCore/QVector>
+
+namespace QInstaller {
+
+class Component;
+class PackageManagerCore;
+
+class INSTALLER_EXPORT ComponentModel : public QAbstractItemModel
+{
+    Q_OBJECT
+
+public:
+    explicit ComponentModel(int columns, PackageManagerCore *core = 0);
+    ~ComponentModel();
+
+    int rowCount(const QModelIndex &parent = QModelIndex()) const;
+    int columnCount(const QModelIndex &parent = QModelIndex()) const;
+
+    QModelIndex parent(const QModelIndex &child) const;
+    QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const;
+
+    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
+    bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole);
+
+    QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const;
+    bool setHeaderData(int section, Qt::Orientation orientation, const QVariant &value,
+        int role = Qt::EditRole);
+
+    Qt::ItemFlags flags(const QModelIndex &index) const;
+
+    void setRootComponents(QList<Component*> rootComponents);
+    void appendRootComponents(QList<Component*> rootComponents);
+
+    PackageManagerCore *packageManagerCore() const;
+
+    bool defaultCheckState() const;
+    bool hasCheckedComponents() const;
+    QList<Component*> checkedComponents() const;
+
+    QModelIndex indexFromComponentName(const QString &name) const;
+    Component* componentFromIndex(const QModelIndex &index) const;
+
+public Q_SLOTS:
+    void selectAll();
+    void deselectAll();
+    void selectDefault();
+
+Q_SIGNALS:
+    void defaultCheckStateChanged(bool changed);
+    void checkStateChanged(const QModelIndex &index);
+
+private Q_SLOTS:
+    void slotModelReset();
+    void slotCheckStateChanged(const QModelIndex &index);
+
+private:
+    QSet<QString> select(Qt::CheckState state);
+    void updateCache(const QModelIndex &parent) const;
+    QModelIndexList collectComponents(const QModelIndex &parent) const;
+
+private:
+    PackageManagerCore *m_core;
+
+    int m_rootIndex;
+    QVector<QVariant> m_headerData;
+    QSet<QString> m_initialCheckedSet;
+    QSet<QString> m_currentCheckedSet;
+    QList<Component*> m_rootComponentList;
+
+    mutable QMap<QString, QPersistentModelIndex> m_indexByNameCache;
+};
+
+}   // namespace QInstaller
+
+#endif // COMPONENTMODEL_H