Package com.google.gwt.aria.client

Class Attribute<T>

java.lang.Object

com.google.gwt.aria.client.Attribute<T>

Type Parameters:

T - The attribute value type

Direct Known Subclasses:

AriaValueAttribute, PrimitiveValueAttribute

public abstract class Attribute<T>
extends Object

Class representing ARIA state/property attribute. Contains methods for setting, getting, removing ARIA attributes for an HTML Element.

For more details about ARIA states and properties check the W3C ARIA documentation Supported States and Properties .

Field Summary

Fields

Modifier and Type	Field	Description
protected String	defaultValue
protected final String	name

Constructor Summary

Constructors

Constructor	Description
Attribute(String name)	Constructs a state/property ARIA attribute with name name and null default value.
Attribute(String name, String defaultValue)	Constructs a state/property ARIA attribute with name name and defaultValue.

Method Summary

Modifier and Type	Method	Description
String	get(Element element)	Gets the HTML attribute value for the attribute with name name for element element
String	getName()	Gets the property/state name
protected abstract String	getSingleValue(T value)	Gets the string representation of value to be set as an attribute value to an HTML element.
void	remove(Element element)	Removes the state/property attribute for element element.
void	set(Element element, T... values)	Sets the state/property value for the HTML element element.
void	setDefault(Element element)	Sets the state/property value to the defaultValue if not null.

Methods inherited from class java.lang.Object

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

Field Details

name

protected final String name

defaultValue

protected String defaultValue

Constructor Details

Attribute

public Attribute(String name,
 String defaultValue)

Constructs a state/property ARIA attribute with name name and defaultValue.

Parameters:

name - State/Property name

defaultValue - Default values

Attribute

public Attribute(String name)

Constructs a state/property ARIA attribute with name name and null default value.

Parameters:

name - State/Property name

Method Details

get

public String get(Element element)

Gets the HTML attribute value for the attribute with name name for element element

Parameters:

element - HTML element

Returns:

The attribute value for element

getName

public String getName()

Gets the property/state name

Returns:

The attribute name

remove

public void remove(Element element)

Removes the state/property attribute for element element.

Parameters:

element - HTM element

set

public void set(Element element,
 T... values)

Sets the state/property value for the HTML element element.

Parameters:

element - HTML element

values - Attribute value

setDefault

public void setDefault(Element element)

Sets the state/property value to the defaultValue if not null. If a list of default values is set, every default value is converted to string and the string values are concatenated in a string token list. There is an assertion checking whether the default is null. Note that the asserts are enabled during development and testing but they will be stripped in production mode.

Parameters:

element - HTML element

getSingleValue

protected abstract String getSingleValue(T value)

Gets the string representation of value to be set as an attribute value to an HTML element.

Parameters:

value - The item to be stringified

Returns:

the stringified representation of value