ilog.views.chart.servlet

Class IlvDefaultChartNavigationInfoGenerator

java.lang.Object

ilog.views.chart.servlet.IlvAbstractChartHitmapInfoGenerator

ilog.views.chart.servlet.IlvAbstractChartNavigationInfoGenerator

ilog.views.chart.servlet.IlvDefaultChartNavigationInfoGenerator

All Implemented Interfaces:

IlvHitmapInfoGenerator

public class IlvDefaultChartNavigationInfoGenerator
extends IlvAbstractChartNavigationInfoGenerator

The default generator for keyboard navigation info in a chart.

Since:

JViews 8.8

Constructor Summary

Constructors

Constructor and Description
IlvDefaultChartNavigationInfoGenerator(IlvChartHitmap hitmap) The constructor with IlvChartHitmapAccumulator parameter.

Method Summary

Modifier and Type	Method and Description
IlvNavigationInfo	getNavigationInfo(int region, IlvChartAreaAccessible element) Returns the navigation information for the given region.

Methods inherited from class ilog.views.chart.servlet.IlvAbstractChartNavigationInfoGenerator

getRegionInfo

Methods inherited from class ilog.views.chart.servlet.IlvAbstractChartHitmapInfoGenerator

buildInformation, getHitmap

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

IlvDefaultChartNavigationInfoGenerator

public IlvDefaultChartNavigationInfoGenerator(IlvChartHitmap hitmap)

The constructor with IlvChartHitmapAccumulator parameter.

Parameters:

hitmap - An already filled IlvChartHitmap.

Method Detail

getNavigationInfo

public IlvNavigationInfo getNavigationInfo(int region,
                                           IlvChartAreaAccessible element)

Returns the navigation information for the given region. This is an object of the form {u,d,l,r} where each of u, d, l, r is either the index of a region (a positive integer) or 0. The u field denotes the new focused region after the user presses the up-arrow key. The d field denotes the new focused region after the user presses the down-arrow key. The l field denotes the new focused region after the user presses the left-arrow key. The r field denotes the new focused region after the user presses the right-arrow key.

Specified by:

getNavigationInfo in class IlvAbstractChartNavigationInfoGenerator

Parameters:

region - The index denoting a region, an integer in the range 1 .. hitmap.getRegionsCount().

element - The chart area element that is associated to the region, or null if none.

Returns:

A keyboard navigation info.