/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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* 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 .
*/
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 );
};
}; }; }; };
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