AccessibleValue (Java Platform SE 8 ) (original) (raw)

• All Known Implementing Classes:
  AbstractButton.AccessibleAbstractButton, Button.AccessibleAWTButton, Checkbox.AccessibleAWTCheckbox, CheckboxMenuItem.AccessibleAWTCheckboxMenuItem, JButton.AccessibleJButton, JCheckBox.AccessibleJCheckBox, JCheckBoxMenuItem.AccessibleJCheckBoxMenuItem, JInternalFrame.AccessibleJInternalFrame, JInternalFrame.JDesktopIcon.AccessibleJDesktopIcon, JMenu.AccessibleJMenu, JMenuItem.AccessibleJMenuItem, JProgressBar.AccessibleJProgressBar, JRadioButton.AccessibleJRadioButton, JRadioButtonMenuItem.AccessibleJRadioButtonMenuItem, JScrollBar.AccessibleJScrollBar, JSlider.AccessibleJSlider, JSpinner.AccessibleJSpinner, JSplitPane.AccessibleJSplitPane, JToggleButton.AccessibleJToggleButton, Menu.AccessibleAWTMenu, MenuItem.AccessibleAWTMenuItem, 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 (seeAccessible) and then calling theAccessibleContext.getAccessibleValue() method. If the return value is not null, the object supports this interface.
See Also:
Accessible, Accessible.getAccessibleContext(), AccessibleContext, AccessibleContext.getAccessibleValue()

• • Method Summary

  All Methods Instance Methods Abstract Methods

  Modifier and Type	Method	Description
  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  
     [Number](../../java/lang/Number.html "class in java.lang") 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  
     See Also:  
     [setCurrentAccessibleValue(java.lang.Number)](../../javax/accessibility/AccessibleValue.html#setCurrentAccessibleValue-java.lang.Number-)  
     * #### setCurrentAccessibleValue  
     boolean setCurrentAccessibleValue([Number](../../java/lang/Number.html "class in java.lang") n)  
     Set the value of this object as a Number.  
     Parameters:  
     `n` \- the number to use for the value  
     Returns:  
     True if the value was set; else False  
     See Also:  
     [getCurrentAccessibleValue()](../../javax/accessibility/AccessibleValue.html#getCurrentAccessibleValue--)  
     * #### getMinimumAccessibleValue  
     [Number](../../java/lang/Number.html "class in java.lang") 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  
     See Also:  
     [getMaximumAccessibleValue()](../../javax/accessibility/AccessibleValue.html#getMaximumAccessibleValue--)  
     * #### getMaximumAccessibleValue  
     [Number](../../java/lang/Number.html "class in java.lang") 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  
     See Also:  
     [getMinimumAccessibleValue()](../../javax/accessibility/AccessibleValue.html#getMinimumAccessibleValue--)

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