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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_chart_XChartData_idl__
#define __com_sun_star_chart_XChartData_idl__
#include <com/sun/star/uno/XInterface.idl>
#include <com/sun/star/chart/XChartDataChangeEventListener.idl>
module com { module sun { module star { module chart {
/** manages the data of the chart.
@see XChartDocument
*/
published interface XChartData: com::sun::star::uno::XInterface
{
/** allows a component supporting the
XChartDataChangeEventListener interface to
register as listener. The component will be notified with a
ChartDataChangeEvent every time the chart's data
changes.</p>
@param aListener
the component that is to be added as listener
@see XChartDataChangeEventListener
@see ChartDataChangeEvent
*/
void addChartDataChangeEventListener( [in] com::sun::star::chart::XChartDataChangeEventListener aListener );
/** removes a previously registered listener.
@param aListener
the component that is to be removed
*/
void removeChartDataChangeEventListener( [in] com::sun::star::chart::XChartDataChangeEventListener aListener );
/** @returns
the value which is to be used as an indicator for a
missing value in the data.
<p>In IEEE arithmetic format it is one of the NaN values, so
there are no conflicts with existing numeric values.</p>
*/
double getNotANumber();
/** checks whether the value given is equal to the indicator value
for a missing value.
<p>In IEEE arithmetic format it is one of the NaN values, so
there are no conflicts with existing numeric values.</p>
<p>Always use this method to check, if a value is <em>not a
number</em>. If you compare the value returned by
XChartData::getNotANumber() to another double
value using the = operator, you may not get the desired
result!</p>
@returns
`TRUE` if the number given is interpreted by the chart as
a missing value.
@param nNumber
the number that you want to check for validity.
*/
boolean isNotANumber( [in] double nNumber );
};
}; }; }; };
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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