com.vaadin.client.widgets

Class Escalator.AriaGridHelper

java.lang.Object

com.vaadin.client.widgets.Escalator.AriaGridHelper

Enclosing class:

Escalator

public class Escalator.AriaGridHelper
extends Object

Helper class that helps to implement the WAI-ARIA functionality for the Grid and TreeGrid component.

The following WAI-ARIA attributes are added through this class:

• aria-rowcount (since 8.2)
• roles provided by Escalator.AriaGridRole (since 8.2)

Since:

8.2

Constructor Summary

Constructors

Constructor and Description
AriaGridHelper()

Method Summary

Modifier and Type	Method and Description
void	addRows(int numberOfRows) Adds the given numberOfRows to allRows and calls updateAriaRowCount().
void	removeRows(int numberOfRows) Removes the given numberOfRows from allRows and calls updateAriaRowCount().
void	updateAriaRowCount() Sets the aria-rowcount attribute with the current value of allRows if the grid is attached and allRows > 0.
void	updateRole(com.google.gwt.dom.client.Element element, Escalator.AriaGridRole role) Sets the role attribute to the given element.

Methods inherited from class java.lang.Object

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

Constructor Detail

AriaGridHelper

public AriaGridHelper()

Method Detail

addRows

public void addRows(int numberOfRows)

Adds the given numberOfRows to allRows and calls updateAriaRowCount().

Parameters:

numberOfRows - number of rows that were added to the grid

Since:

8.2

removeRows

public void removeRows(int numberOfRows)

Removes the given numberOfRows from allRows and calls updateAriaRowCount().

Parameters:

numberOfRows - number of rows that were removed from the grid

Since:

8.2

updateAriaRowCount

public void updateAriaRowCount()

Sets the aria-rowcount attribute with the current value of allRows if the grid is attached and allRows > 0.

Since:

8.2

updateRole

public void updateRole(com.google.gwt.dom.client.Element element,
                       Escalator.AriaGridRole role)

Sets the role attribute to the given element.

Parameters:

element - element that should get the role attribute

role - role to be added

Since:

8.2