Interface HasItem

Method Detail

• getSource

  Chart getSource()

  Specified by:

  getSource in interface HasSeries

• getCategory

  String getCategory()

• getItemIndex

  int getItemIndex()

  Returns the index of the series item, that is associated with this event, in HasSeries.getSeries(). Can be used to identify the item within the series.

  Example for ListSeries:

   int itemIndex = event.getItemIndex();
   ListSeries series = (ListSeries) event.getSeries();
   Number datum = series.getData()[itemIndex];
   

  Returns:

  the index of the item in the series

  See Also:

  getItem(), getItemId()

• getItemId

  String getItemId()

  The ID of the series item that is associated with the event. Can be used to identify the item within the series.

  Example for TreeSeries:

   String id = this.getItemId();
   TreeSeries series = (TreeSeries) this.getSeries();
   Optional<TreeSeriesItem> treeItem = series.getData().stream()
     .filter(item -> item.getId().equals(id))
     .findFirst();
   

  Only AbstractSeriesItem supports setting an ID. For other types of series items this property will always return null. For AbstractSeriesItem the ID is optional. Unless the developer has explicitly set an ID for the item associated with the event, this property will be null. See getItem() or getItemIndex() for alternatives.

  Returns:

  the ID of the series item associated with the event, or null if the series item has no ID

  See Also:

  getItem(), getItemIndex()

• getItem

  default DataSeriesItem getItem()

  Returns the data series item that this event is associated with.

  NOTE: This method only works with series of type DataSeries. For other series an UnsupportedOperationException will be thrown. See getItemIndex() or getItemId() for alternatives.

  Returns:

  the DataSeriesItem that is associated with this event

  Throws:

  UnsupportedOperationException - when using this method with a series that is not a DataSeries

  See Also:

  getItemIndex(), getItemId()