Hi, we think that we found a solution for this problem. So far, it works with the documents we tested.
Let textDocument be the current document that has been obtained from the model. String getFileFormat(XTextDocument textDocument) { try { final Object objTypeDetection = context.getServiceManager().createInstanceWithContext( "com.sun.star.document.TypeDetection", context); final XTypeDetection typeDetection = UnoRuntime.queryInterface(XTypeDetection.class, objTypeDetection); final XNameAccess typeNameAccess = UnoRuntime.queryInterface(XNameAccess.class,objTypeDetection); final String typeByURL = typeDetection.queryTypeByURL(textDocument.getURL()); final PropertyValue[] typeProperties = (PropertyValue[]) typeNameAccess.getByName(typeByURL); for (final PropertyValue property : typeProperties) { if (property.Name.equals("MediaType")) { return (String) property.Value; } } return ""; } catch (final Exception e) { return ""; } } Regards, Kai Labusch