ilog.views.chart.accessibility

Class IlvChartAreaAccessibleHierarchy

java.lang.Object

ilog.views.chart.accessibility.IlvChartAreaAccessibleHierarchy

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

IlvDefaultChartAreaAccessibleHierarchy

public abstract class IlvChartAreaAccessibleHierarchy
extends Object
implements Serializable

This abstract class describes how the accessible elements of a chart area (scales, renderers, data sets, data points, and data objects) are grouped together, allowing a user to navigate among them.

The model is basically a hierarchy of rows. Each row contains a number of accessible elements, in a certain order.

Since:

JViews 8.8

See Also:

IlvChartCycleSelectInteractor, Serialized Form

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	IlvChartAreaAccessibleHierarchy()

Method Summary

Modifier and Type	Method and Description
abstract IlvChartAreaAccessible	getChildRowFirstSelectable(IlvChartAreaAccessible elem) Returns the first selectable element in the row attached under elem.
abstract IlvChartAreaAccessible	getFirstSelectable(IlvChartAreaAccessible inRow) Returns the first selectable element of the row of inRow, or of the topmost row if inRow is null.
abstract IlvChartAreaAccessible	getLastSelectable(IlvChartAreaAccessible inRow) Returns the last selectable element of the row of inRow, or of the topmost row if inRow is null.
abstract IlvChartAreaAccessible	getNextSelectable(IlvChartAreaAccessible elem) Returns the next selectable element in the same row as elem.
abstract IlvChartAreaAccessible	getParentRowSelectable(IlvChartAreaAccessible elem) Returns the selectable element in the row above elem.
abstract IlvChartAreaAccessible	getPreviousSelectable(IlvChartAreaAccessible elem) Returns the previous selectable element in the same row as elem.

Methods inherited from class java.lang.Object

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

Constructor Detail

IlvChartAreaAccessibleHierarchy

protected IlvChartAreaAccessibleHierarchy()

Method Detail

getFirstSelectable

public abstract IlvChartAreaAccessible getFirstSelectable(IlvChartAreaAccessible inRow)

Returns the first selectable element of the row of inRow, or of the topmost row if inRow is null.

Parameters:

inRow - An accessible element of the chart area, or null.

Returns:

The first selectable accessible element in the same row, or null if there is none.

getLastSelectable

public abstract IlvChartAreaAccessible getLastSelectable(IlvChartAreaAccessible inRow)

Returns the last selectable element of the row of inRow, or of the topmost row if inRow is null.

Parameters:

inRow - An accessible element of the chart area, or null.

Returns:

The last selectable accessible element in the same row, or null if there is none.

getNextSelectable

public abstract IlvChartAreaAccessible getNextSelectable(IlvChartAreaAccessible elem)

Returns the next selectable element in the same row as elem.

Parameters:

elem - An accessible element of the chart area.

Returns:

The next selectable accessible element in the same row, or null if there is none.

getPreviousSelectable

public abstract IlvChartAreaAccessible getPreviousSelectable(IlvChartAreaAccessible elem)

Returns the previous selectable element in the same row as elem.

Parameters:

elem - An accessible element of the chart area.

Returns:

The previous selectable accessible element in the same row, or null if there is none.

getParentRowSelectable

public abstract IlvChartAreaAccessible getParentRowSelectable(IlvChartAreaAccessible elem)

Returns the selectable element in the row above elem.

Parameters:

elem - An accessible element of the chart area.

Returns:

The selectable accessible element in the parent row, or null if there is no parent row.

getChildRowFirstSelectable

public abstract IlvChartAreaAccessible getChildRowFirstSelectable(IlvChartAreaAccessible elem)

Returns the first selectable element in the row attached under elem.

Parameters:

elem - An accessible element of the chart area.

Returns:

The first selectable accessible element in the row below elem, or null if there is no such row or none of its elements is selectable.