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Charts Package API Reference Guide

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IlvMemoryChartData Class Reference

Class storing the managed data sets in an array. More...

#include <ilviews/charts/data.h>

Inheritance diagram for IlvMemoryChartData:
IlvAbstractChartData

Public Member Functions

 IlvMemoryChartData ()
 Constructor. More...
 
virtual ~IlvMemoryChartData ()
 Destructor. More...
 
virtual IlBoolean addDataSet (IlvChartDataSet *dataSet, IlBoolean copy=IlFalse)
 Adds a managed data set. More...
 
virtual IlvChartDataSetgetDataSet (IlUInt dataSetIndex) const
 Gets a managed data set by its index. More...
 
virtual IlUInt getDataSetsCount () const
 Returns the number of managed data sets. More...
 
IlUInt getMaxDataSetsCount () const
 Returns the maximum number of data sets that can be managed. More...
 
virtual IlBoolean insertDataSet (IlvChartDataSet *dataSet, IlUInt index=IlvLastPositionIndex, IlBoolean copy=IlFalse)
 Inserts a managed data set. More...
 
virtual IlBoolean isLimited () const
 Indicates whether the number of managed data sets is limited. More...
 
virtual IlBoolean removeDataSet (IlUInt dataSetIndex)
 Removes a managed data set. More...
 
virtual void removeDataSets ()
 Removes all the managed data sets. More...
 
virtual IlBoolean setDataSet (IlUInt dataSetIndex, IlvChartDataSet *dataSet, IlBoolean copy=IlFalse)
 Sets a managed data set. More...
 
virtual IlBoolean setDataSets (IlUInt &count, IlvChartDataSet *const *dataSets, IlBoolean copy=IlFalse)
 Sets the managed data sets. More...
 
void setMaxDataSetsCount (IlUInt maxCount)
 Sets the maximum number of data sets that can be managed. More...
 
- Public Member Functions inherited from IlvAbstractChartData
virtual ~IlvAbstractChartData ()
 Destructor. More...
 
void addListener (IlvChartDataListener *lst)
 Adds a listener. More...
 
virtual IlvAbstractChartDatacopy () const =0
 Virtual copy constructor. More...
 
virtual void dataAllPointsRemoved (const IlvChartDataSet *ds) const
 Performs the updates needed when a data point is removed. More...
 
virtual void dataPointAdded (const IlvChartDataSet *dataSet, IlUInt position) const
 Performs the updates needed when a data point is added. More...
 
virtual void dataPointChanged (const IlvChartDataSet *dataSet, IlUInt ptidx, IlBoolean beforeChange) const
 Performs the updates needed when a data point is changed. More...
 
virtual void dataPointRemoved (const IlvChartDataSet *dataSet, IlUInt ptidx) const
 Performs the updates needed when a data point is removed. More...
 
virtual void dataSetAdded (IlvChartDataSet *dataSet, IlUInt position)
 Performs the updates needed when a data set is added. More...
 
virtual void dataSetChanged (IlvChartDataSet *oldSet, IlvChartDataSet *newSet)
 Performs the updates needed when a data set is changed. More...
 
virtual void dataSetRemoved (IlvChartDataSet *dataSet)
 Performs the necessary updates when a data set is removed. More...
 
virtual void endBatch (const IlvChartDataSet *dataSet) const
 Specifies the end of a set of modifications on a data set. More...
 
IlvChartDataSetgetDataSetByName (const char *name) const
 Gets a managed data set by its name. More...
 
IlUInt getDataSetIndex (const IlvChartDataSet *dataSet) const
 Returns the index of a managed data set. More...
 
virtual IlvChartDataSet *const * getDataSets (IlUInt &nbDataSets) const
 Returns all the managed data sets. More...
 
IlvChartDataListener *const * getListeners (IlUInt &count) const
 Returns all the listeners. More...
 
virtual IlBoolean isRemovalAllowed () const
 Indicates whether the managed data sets can be removed. More...
 
virtual IlBoolean isWritable () const
 Indicates whether the managed data sets can be modified. More...
 
void lock ()
 Locks the current IlvAbstractChartData object. More...
 
IlvChartDataSetoperator[] (IlUInt index)
 Gets a managed data set by its index. More...
 
const IlvChartDataSetoperator[] (IlUInt index) const
 Gets a managed data set by its index. More...
 
IlvChartDataListenerremoveListener (IlvChartDataListener *lst)
 Removes a listener. More...
 
void removeListeners ()
 Removes all the listeners.
 
IlBoolean replaceDataSet (IlvChartDataSet *oldDataSet, IlvChartDataSet *newDataSet)
 Replaces a managed data set by another one. More...
 
IlvOutputFilesave (IlvOutputFile &file) const
 Writes a complete description of the current object in a file. More...
 
virtual void startBatch (const IlvChartDataSet *dataSet) const
 Specifies the beginning of a set of modifications on a data set. More...
 
void unLock ()
 Unlocks the current IlvAbstractChartData object. More...
 
virtual void write (IlvOutputFile &file) const =0
 Writes the attributes of the current object in a file. More...
 

Additional Inherited Members

- Static Public Member Functions inherited from IlvAbstractChartData
static IlvAbstractChartDataLoad (IlvInputFile &file)
 Reads a chart data object from a file. More...
 
- Protected Member Functions inherited from IlvAbstractChartData
 IlvAbstractChartData ()
 Constructor. More...
 
 IlvAbstractChartData (const IlvAbstractChartData &cData)
 Constructor. More...
 
 IlvAbstractChartData (IlvInputFile &file)
 Constructor. More...
 

Detailed Description

Class storing the managed data sets in an array.

Library: ilvcharts

This class is a subclass of IlvAbstractChartData that stores the managed data sets in memory.

See Also
IlvAbstractChartData, IlvChartDataSet.

Constructor & Destructor Documentation

IlvMemoryChartData::IlvMemoryChartData ( )

Constructor.

Initializes a new IlvMemoryChartData object. By default, the maximum data set count is set to IlvNoCountLimit, which means that the number of data sets that can be managed by this object is not limited.

virtual IlvMemoryChartData::~IlvMemoryChartData ( )
virtual

Destructor.

The destructor removes from the current object all the data sets managed by this object.

Note
The data sets are not deleted but unlocked (that is, the IlvChartDataSet::unLock() method is called). They will be deleted only when no objects reference them.

Member Function Documentation

virtual IlBoolean IlvMemoryChartData::addDataSet ( IlvChartDataSet dataSet,
IlBoolean  copy = IlFalse 
)
virtual

Adds a managed data set.

Parameters
dataSetThe data set to add to the current object.
copyIndicates whether the data set passed as a parameter must be copied. If copy is IlTrue, the data set is copied. Otherwise, a pointer to the data set stored in dataSet is kept. Therefore, its contents should not be deleted.
Returns
IlTrue if the data set has been successfully added or IlFalse otherwise.
Note
When you add a data set, the new data set is locked.

Implements IlvAbstractChartData.

virtual IlvChartDataSet* IlvMemoryChartData::getDataSet ( IlUInt  index) const
virtual

Gets a managed data set by its index.

Parameters
indexThe index of the returned data set in the current object.
Returns
A pointer to the data set at the index index if it exists and 0 otherwise.
Note
The data set object must not be deleted by the user since it is maintained internally.

Implements IlvAbstractChartData.

virtual IlUInt IlvMemoryChartData::getDataSetsCount ( ) const
virtual

Returns the number of managed data sets.

Returns
The number of data sets managed by this object.

Implements IlvAbstractChartData.

IlUInt IlvMemoryChartData::getMaxDataSetsCount ( ) const

Returns the maximum number of data sets that can be managed.

Returns
IlvNoCountLimit if the number of data sets that can be managed by the current object is not limited. Otherwise, it returns the maximum number of data sets that can be managed by the current object.
virtual IlBoolean IlvMemoryChartData::insertDataSet ( IlvChartDataSet dataSet,
IlUInt  index = IlvLastPositionIndex,
IlBoolean  copy = IlFalse 
)
virtual

Inserts a managed data set.

Parameters
dataSetThe data set to insert in the current object.
indexThe index at which the data set dataSet must be inserted in the current object.
copyIndicates whether the data set passed as a parameter must be copied. If copy is IlTrue, the data set is copied. Otherwise, a pointer to the data set stored in dataSet is kept. Therefore, its contents should not be deleted.
Returns
IlTrue if the data set has been successfully inserted or IlFalse otherwise.
Note
When you insert a data set, the new data set is locked.

Implements IlvAbstractChartData.

virtual IlBoolean IlvMemoryChartData::isLimited ( ) const
virtual

Indicates whether the number of managed data sets is limited.

Returns
IlFalse if the number of managed data sets is not limited (that is, the maximum data sets count is equal to IlvNoCountLimit) and IlTrue otherwise.

Reimplemented from IlvAbstractChartData.

virtual IlBoolean IlvMemoryChartData::removeDataSet ( IlUInt  dataSetIndex)
virtual

Removes a managed data set.

Parameters
dataSetIndexThe index at which the data set must be removed from the current object.
Returns
IlTrue if the data set has been removed or IlFalse otherwise.
Note
When you remove a data set, the data set is not deleted but unlocked (that is, the IlvChartDataSet::unLock() method is called). It will be deleted only when no objects reference it.

Implements IlvAbstractChartData.

virtual void IlvMemoryChartData::removeDataSets ( )
virtual

Removes all the managed data sets.

Note
When you remove a data set, the data set is not deleted but unlocked (that is, the IlvChartDataSet::unLock() method is called). It will be deleted only when no objects reference it.

Implements IlvAbstractChartData.

virtual IlBoolean IlvMemoryChartData::setDataSet ( IlUInt  dataSetIndex,
IlvChartDataSet dataSet,
IlBoolean  copy = IlFalse 
)
virtual

Sets a managed data set.

If a data set already exists at the index dataSetIndex, the data set is replaced by the new one. Otherwise, the new one is added at the end.

Parameters
dataSetIndexThe index at which the data set dataSet must be set in the current object.
dataSetThe data set to set in the current object.
copyIndicates whether the data set passed as a parameter must be copied. If copy is IlTrue, the data set is copied. Otherwise, a pointer to the data set stored in dataSet is kept. Therefore, its contents should not be deleted.
Returns
IlTrue if the data set has been successfully set or IlFalse otherwise.
Note
When you set a data set, the new data set is locked and the old one, if it exists, is unlocked.

Implements IlvAbstractChartData.

virtual IlBoolean IlvMemoryChartData::setDataSets ( IlUInt count,
IlvChartDataSet *const *  dataSets,
IlBoolean  copy = IlFalse 
)
virtual

Sets the managed data sets.

Parameters
countThis parameter first contains the number of data sets in the array dataSets. It is eventually modified to contain the number of data sets that have actually been set, if not all the data sets have been set in the current object.
dataSetsAn array of the data sets to set in the current object.
copyIndicates whether the data sets passed as parameters must be copied. If copy is IlTrue, the data sets are copied. Otherwise, the data sets that are stored in the array dataSets are kept. Therefore, the contents of the array should not be deleted.
Returns
IlTrue if data sets have been set. If not all the data sets could be set, the parameter count is modified to indicate the number of data sets that have been successfully set.
Note
When you set a data set, the new data set is locked and the old one, if any, is unlocked.

Implements IlvAbstractChartData.

void IlvMemoryChartData::setMaxDataSetsCount ( IlUInt  maxCount)

Sets the maximum number of data sets that can be managed.

To specify that the number of data sets that can be managed by the current object is not limited, you have to set the maximum data sets count to IlvNoCountLimit.

Parameters
maxCountThe new maximum number of data sets that can be managed by the current object.

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