javax.accessibility

Interface AccessibleValue

public interface AccessibleValue

If an object implements this interface then it must be able to control a numerical value. For example, a scroll bar has a position represented by a number. Accessibility software can use the implementations of this interface to change the associated value.

The AccessibleContext.getAccessibleValue() method should return null if an object does not implement this interface.

Since:

1.2

See Also:

Accessible, AccessibleContext, AccessibleContext.getAccessibleValue()

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.Number	getCurrentAccessibleValue() Gets the current value of this object, or null if it has not been set.
java.lang.Number	getMaximumAccessibleValue() Gets the maximum value in the range of this object, or null if there is no maximum.
java.lang.Number	getMinimumAccessibleValue() Gets the minimum value in the range of this object, or null if there is no minimum.
boolean	setCurrentAccessibleValue(java.lang.Number number) Sets the current value of this object.

Method Detail

getCurrentAccessibleValue

java.lang.Number getCurrentAccessibleValue()

Gets the current value of this object, or null if it has not been set.

Returns:

the current value, or null

See Also:

setCurrentAccessibleValue(Number)

setCurrentAccessibleValue

boolean setCurrentAccessibleValue(java.lang.Number number)

Sets the current value of this object. Returns true if the number successfully changed.

Parameters:

number - the new value

Returns:

true on success

getMinimumAccessibleValue

java.lang.Number getMinimumAccessibleValue()

Gets the minimum value in the range of this object, or null if there is no minimum.

Returns:

the minimum

See Also:

getMaximumAccessibleValue()

getMaximumAccessibleValue

java.lang.Number getMaximumAccessibleValue()

Gets the maximum value in the range of this object, or null if there is no maximum.

Returns:

the maximum

See Also:

getMinimumAccessibleValue()