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diff --git a/src/Authoring/Qt3DStudio/Palettes/Inspector/ChooserModelBase.h b/src/Authoring/Qt3DStudio/Palettes/Inspector/ChooserModelBase.h
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+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt 3D Studio.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#ifndef CHOOSERMODELBASE_H
+#define CHOOSERMODELBASE_H
+
+#include "DispatchListeners.h"
+#include "StudioObjectTypes.h"
+
+#include <QFileSystemModel>
+#include <QAbstractListModel>
+#include <QList>
+#include <QVector>
+
+QT_FORWARD_DECLARE_CLASS(QFileSystemModel)
+
+class ChooserModelBase : public QAbstractListModel, public CPresentationChangeListener
+{
+    Q_OBJECT
+
+public:
+    explicit ChooserModelBase(QObject *parent = nullptr);
+    ~ChooserModelBase();
+
+    enum {
+        IsExpandableRole = QFileSystemModel::FilePermissions + 1,
+        DepthRole,
+        ExpandedRole,
+        IsSelectableRole,
+        IsCurrentFile
+    };
+
+    QHash<int, QByteArray> roleNames() const override;
+    int rowCount(const QModelIndex &parent = {}) const override;
+    QVariant data(const QModelIndex &index, int role) const override;
+
+    Q_INVOKABLE void expand(int row);
+    Q_INVOKABLE void collapse(int row);
+
+    Q_INVOKABLE void setCurrentFile(const QString &path);
+    static QString noneString() { return tr("[None]"); }
+
+    // CPresentationChangeListener
+    void OnNewPresentation() override;
+
+Q_SIGNALS:
+    void modelChanged(QAbstractItemModel *model);
+
+protected:
+    EStudioObjectType getIconType(const QString &path) const;
+
+    virtual bool isVisible(const QString &path) const = 0;
+
+    struct FixedItem
+    {
+        EStudioObjectType iconType;
+        QString iconSource;
+        QString name;
+    };
+
+    struct TreeItem {
+        QPersistentModelIndex index;
+        int depth;
+        bool expanded;
+        TreeItem *parent;
+        int childCount;
+    };
+
+    virtual const QVector<FixedItem> getFixedItems() const = 0;
+    virtual QString specialDisplayName(const TreeItem &item) const;
+
+private:
+    void setRootPath(const QString &path);
+    void setRootIndex(const QModelIndex &rootIndex);
+    void clearModelData();
+    void showModelTopLevelItems();
+    void showModelChildItems(const QModelIndex &parentItem, int start, int end);
+    int modelIndexRow(const QModelIndex &modelIndex) const;
+    bool isExpanded(const QModelIndex &modelIndex) const;
+    QString getIconName(const QString &path) const;
+    bool isVisible(const QModelIndex &modelIndex) const;
+    bool hasVisibleChildren(const QModelIndex &modelIndex) const;
+    void expand(const QModelIndex &modelIndex);
+
+    void modelRowsInserted(const QModelIndex &parent, int start, int end);
+    void modelRowsRemoved(const QModelIndex &parent, int start, int end);
+    void modelRowsMoved(const QModelIndex &parent, int start, int end);
+    void modelLayoutChanged();
+
+    void rebuild();
+
+    QFileSystemModel *m_model;
+    QPersistentModelIndex m_rootIndex;
+    QList<TreeItem> m_items;
+    QString m_currentFile;
+};
+
+#endif // CHOOSERMODELBASE_H