AccessibleValue (Java Platform SE 6)

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javax.accessibility
interface AccessibleValue

All Known Implementing Classes:: AbstractButton.AccessibleAbstractButton, JButton.AccessibleJButton, JMenuItem.AccessibleJMenuItem, JToggleButton.AccessibleJToggleButton, JCheckBoxMenuItem.AccessibleJCheckBoxMenuItem, JMenu.AccessibleJMenu, JRadioButtonMenuItem.AccessibleJRadioButtonMenuItem, JCheckBox.AccessibleJCheckBox, JRadioButton.AccessibleJRadioButton, Button.AccessibleAWTButton, Checkbox.AccessibleAWTCheckbox, CheckboxMenuItem.AccessibleAWTCheckboxMenuItem, JInternalFrame.AccessibleJInternalFrame, JInternalFrame.JDesktopIcon.AccessibleJDesktopIcon, JProgressBar.AccessibleJProgressBar, JScrollBar.AccessibleJScrollBar, JSlider.AccessibleJSlider, JSpinner.AccessibleJSpinner, JSplitPane.AccessibleJSplitPane, MenuItem.AccessibleAWTMenuItem, Menu.AccessibleAWTMenu, PopupMenu.AccessibleAWTPopupMenu, Scrollbar.AccessibleAWTScrollBar

public interface AccessibleValue

The AccessibleValue interface should be supported by any object that supports a numerical value (e.g., a scroll bar). This interface provides the standard mechanism for an assistive technology to determine and set the numerical value as well as get the minimum and maximum values. Applications can determine if an object supports the AccessibleValue interface by first obtaining its AccessibleContext (see {@link Accessible}) and then calling the {@link AccessibleContext#getAccessibleValue} method. If the return value is not null, the object supports this interface.

Method Summary
`Number`	`getCurrentAccessibleValue()` Get the value of this object as a Number.
`Number`	`getMaximumAccessibleValue()` Get the maximum value of this object as a Number.
`Number`	`getMinimumAccessibleValue()` Get the minimum value of this object as a Number.
`boolean`	`setCurrentAccessibleValue(Number n)` Set the value of this object as a Number.

Method Detail

getCurrentAccessibleValue

public Number getCurrentAccessibleValue()

Get the value of this object as a Number. If the value has not been set, the return value will be null.

Returns:: value of the object

getMaximumAccessibleValue

public Number getMaximumAccessibleValue()

Get the maximum value of this object as a Number.

Returns:: Maximum value of the object; null if this object does not have a maximum value

getMinimumAccessibleValue

public Number getMinimumAccessibleValue()

Get the minimum value of this object as a Number.

Returns:: Minimum value of the object; null if this object does not have a minimum value

setCurrentAccessibleValue

public boolean setCurrentAccessibleValue(Number n)

Set the value of this object as a Number.

Parameters:: n
Returns:: True if the value was set; else False