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diff --git a/offapi/com/sun/star/form/component/DatabaseComboBox.idl b/offapi/com/sun/star/form/component/DatabaseComboBox.idl
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+#ifndef __com_sun_star_form_component_DatabaseComboBox_idl__
+#define __com_sun_star_form_component_DatabaseComboBox_idl__
+
+#include <com/sun/star/form/component/ComboBox.idl>
+
+#include <com/sun/star/form/DataAwareControlModel.idl>
+
+#include <com/sun/star/form/ListSourceType.idl>
+
+
+
+ module com {  module sun {  module star {  module form {  module component {
+
+
+/** This service specifies a combo box which is data-aware, and can be bound to a database field.
+
+    <p>Like most other data aware controls, such a combo box will display the actual content
+    of the field it is bound to. In addition, as a combo box contains a list where the user
+    can choose items to fill into the control, this list can be filled with different data from
+    a database, too.</p>
+ */
+published service DatabaseComboBox
+{
+    service com::sun::star::form::component::ComboBox;
+
+    service com::sun::star::form::DataAwareControlModel;
+
+
+    /** determines if an empty text should be treated as a `NULL` value.
+
+        <p>When the user enters text into a combo box, and after this, the control
+        content is to be committed into the database field the control is bound to,
+        a decision must be made how to deal with empty strings.<br/>
+        This is controlled by #ConvertEmptyToNull.</p>
+
+        <p>If the property is set to `TRUE`, and an empty text is to be committed, this is
+        converted into `NULL`, else it is written as empty string.</p>
+     */
+    [property] boolean ConvertEmptyToNull;
+
+    /** describes the source of items in the combo box's list.
+
+        <p>The concrete meaning of this property depends on the value of #ListSourceType</p>
+     */
+    [property] string ListSource;
+
+    /** specifies the kind of list source.
+
+        <p>Note: A value of com::sun::star::form::ListSourceType::VALUELIST
+        is not valid for a combo box. It won't be rejected when setting it, but controls will usually ignore it
+        and leave the list empty.</p>
+     */
+    [property] com::sun::star::form::ListSourceType ListSourceType;
+};
+
+
+}; }; }; }; };
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */