javax.accessibility
Class AccessibleContext

java.lang.Object   
  javax.accessibility.AccessibleContext

Direct Known Subclasses:

Component.AccessibleAWTComponent , ImageIcon.AccessibleImageIcon , JList.AccessibleJList.AccessibleJListChild , JTable.AccessibleJTable.AccessibleJTableCell , JTableHeader.AccessibleJTableHeader.AccessibleJTableHeaderEntry , JTree.AccessibleJTree.AccessibleJTreeNode , MenuComponent.AccessibleAWTMenuComponent , ProgressMonitor.AccessibleProgressMonitor

public abstract class AccessibleContext
extends Object   

AccessibleContext represents the minimum information all accessible objects return. This information includes the accessible name, description, role, and state of the object, as well as information about its parent and children. AccessibleContext also contains methods for obtaining more specific accessibility information about a component. If the component supports them, these methods will return an object that implements one or more of the following interfaces:

• AccessibleAction - the object can perform one or more actions. This interface provides the standard mechanism for an assistive technology to determine what those actions are and tell the object to perform them. Any object that can be manipulated should support this interface.
• AccessibleComponent - the object has a graphical representation. This interface provides the standard mechanism for an assistive technology to determine and set the graphical representation of the object. Any object that is rendered on the screen should support this interface.
• AccessibleSelection - the object allows its children to be selected. This interface provides the standard mechanism for an assistive technology to determine the currently selected children of the object as well as modify its selection set. Any object that has children that can be selected should support this interface.
• AccessibleText - the object presents editable textual information on the display. This interface provides the standard mechanism for an assistive technology to access that text via its content, attributes, and spatial location. Any object that contains editable text should support this interface.
• AccessibleValue - the object supports a numerical value. This interface provides the standard mechanism for an assistive technology to determine and set the current value of the object, as well as obtain its minimum and maximum values. Any object that supports a numerical value should support this interface.

Field Summary

static String	ACCESSIBLE_ACTION_PROPERTY Constant used to indicate that the supported set of actions has changed.
static String	ACCESSIBLE_ACTIVE_DESCENDANT_PROPERTY Constant used to determine when the active descendant of a component has changed.
static String	ACCESSIBLE_CARET_PROPERTY Constant used to determine when the accessibleText caret has changed.
static String	ACCESSIBLE_CHILD_PROPERTY Constant used to determine when Accessible children are added/removed from the object.
static String	ACCESSIBLE_COMPONENT_BOUNDS_CHANGED PropertyChangeEvent which indicates that a change has occurred in a component's bounds.
static String	ACCESSIBLE_DESCRIPTION_PROPERTY Constant used to determine when the accessibleDescription property has changed.
static String	ACCESSIBLE_HYPERTEXT_OFFSET Constant used to indicate that a hypertext element has received focus.
static String	ACCESSIBLE_INVALIDATE_CHILDREN PropertyChangeEvent which indicates that a significant change has occurred to the children of a component like a tree or text.
static String	ACCESSIBLE_NAME_PROPERTY Constant used to determine when the accessibleName property has changed.
static String	ACCESSIBLE_SELECTION_PROPERTY Constant used to determine when the accessibleSelection has changed.
static String	ACCESSIBLE_STATE_PROPERTY Constant used to determine when the accessibleStateSet property has changed.
static String	ACCESSIBLE_TABLE_CAPTION_CHANGED Constant used to indicate that the table caption has changed The old value in the PropertyChangeEvent will be an Accessible representing the previous table caption and the new value will be an Accessible representing the new table caption.
static String	ACCESSIBLE_TABLE_COLUMN_DESCRIPTION_CHANGED Constant used to indicate that the column description has changed The old value in the PropertyChangeEvent will be null and the new value will be an Integer representing the column index.
static String	ACCESSIBLE_TABLE_COLUMN_HEADER_CHANGED Constant used to indicate that the column header has changed The old value in the PropertyChangeEvent will be null and the new value will be an AccessibleTableModelChange representing the header change.
static String	ACCESSIBLE_TABLE_MODEL_CHANGED Constant used to indicate that table data has changed.
static String	ACCESSIBLE_TABLE_ROW_DESCRIPTION_CHANGED Constant used to indicate that the row description has changed The old value in the PropertyChangeEvent will be null and the new value will be an Integer representing the row index.
static String	ACCESSIBLE_TABLE_ROW_HEADER_CHANGED Constant used to indicate that the row header has changed The old value in the PropertyChangeEvent will be null and the new value will be an AccessibleTableModelChange representing the header change.
static String	ACCESSIBLE_TABLE_SUMMARY_CHANGED Constant used to indicate that the table summary has changed The old value in the PropertyChangeEvent will be an Accessible representing the previous table summary and the new value will be an Accessible representing the new table summary.
static String	ACCESSIBLE_TEXT_ATTRIBUTES_CHANGED PropertyChangeEvent which indicates that text attributes have changed.
static String	ACCESSIBLE_TEXT_PROPERTY PropertyChangeEvent which indicates that text has changed.
static String	ACCESSIBLE_VALUE_PROPERTY Constant used to determine when the accessibleValue property has changed.
static String	ACCESSIBLE_VISIBLE_DATA_PROPERTY Constant used to determine when the visual appearance of the object has changed.
protected String	accessibleDescription A localized String containing the description of the object.
protected String	accessibleName A localized String containing the name of the object.
protected Accessible	accessibleParent The accessible parent of this object.

Constructor Summary

AccessibleContext ()

Method Summary

void	addPropertyChangeListener (PropertyChangeListener listener) Adds a PropertyChangeListener to the listener list.
void	firePropertyChange (String propertyName, Object oldValue, Object newValue) Support for reporting bound property changes.
AccessibleAction	getAccessibleAction () Gets the AccessibleAction associated with this object that supports one or more actions.
abstract Accessible	getAccessibleChild (int i) Returns the specified Accessible child of the object.
abstract int	getAccessibleChildrenCount () Returns the number of accessible children of the object.
AccessibleComponent	getAccessibleComponent () Gets the AccessibleComponent associated with this object that has a graphical representation.
String	getAccessibleDescription () Gets the accessibleDescription property of this object.
AccessibleEditableText	getAccessibleEditableText () Gets the AccessibleEditableText associated with this object presenting editable text on the display.
AccessibleIcon []	getAccessibleIcon () Gets the AccessibleIcons associated with an object that has one or more associated icons
abstract int	getAccessibleIndexInParent () Gets the 0-based index of this object in its accessible parent.
String	getAccessibleName () Gets the accessibleName property of this object.
Accessible	getAccessibleParent () Gets the Accessible parent of this object.
AccessibleRelationSet	getAccessibleRelationSet () Gets the AccessibleRelationSet associated with an object
abstract AccessibleRole	getAccessibleRole () Gets the role of this object.
AccessibleSelection	getAccessibleSelection () Gets the AccessibleSelection associated with this object which allows its Accessible children to be selected.
abstract AccessibleStateSet	getAccessibleStateSet () Gets the state set of this object.
AccessibleTable	getAccessibleTable () Gets the AccessibleTable associated with an object
AccessibleText	getAccessibleText () Gets the AccessibleText associated with this object presenting text on the display.
AccessibleValue	getAccessibleValue () Gets the AccessibleValue associated with this object that supports a Numerical value.
abstract Locale	getLocale () Gets the locale of the component.
void	removePropertyChangeListener (PropertyChangeListener listener) Removes a PropertyChangeListener from the listener list.
void	setAccessibleDescription (String s) Sets the accessible description of this object.
void	setAccessibleName (String s) Sets the localized accessible name of this object.
void	setAccessibleParent (Accessible a) Sets the Accessible parent of this object.

Methods inherited from class java.lang.Object

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

Field Detail

ACCESSIBLE_NAME_PROPERTY

public static final String    ACCESSIBLE_NAME_PROPERTY

Constant used to determine when the accessibleName property has changed. The old value in the PropertyChangeEvent will be the old accessibleName and the new value will be the new accessibleName.

See Also:

getAccessibleName() , addPropertyChangeListener(java.beans.PropertyChangeListener) , Constant Field Values

ACCESSIBLE_DESCRIPTION_PROPERTY

public static final String    ACCESSIBLE_DESCRIPTION_PROPERTY

Constant used to determine when the accessibleDescription property has changed. The old value in the PropertyChangeEvent will be the old accessibleDescription and the new value will be the new accessibleDescription.

See Also:

getAccessibleDescription() , addPropertyChangeListener(java.beans.PropertyChangeListener) , Constant Field Values

ACCESSIBLE_STATE_PROPERTY

public static final String    ACCESSIBLE_STATE_PROPERTY

Constant used to determine when the accessibleStateSet property has changed. The old value will be the old AccessibleState and the new value will be the new AccessibleState in the accessibleStateSet. For example, if a component that supports the vertical and horizontal states changes its orientation from vertical to horizontal, the old value will be AccessibleState.VERTICAL and the new value will be AccessibleState.HORIZONTAL. Please note that either value can also be null. For example, when a component changes from being enabled to disabled, the old value will be AccessibleState.ENABLED and the new value will be null.

See Also:

getAccessibleStateSet() , AccessibleState , AccessibleStateSet , addPropertyChangeListener(java.beans.PropertyChangeListener) , Constant Field Values

ACCESSIBLE_VALUE_PROPERTY

public static final String    ACCESSIBLE_VALUE_PROPERTY

Constant used to determine when the accessibleValue property has changed. The old value in the PropertyChangeEvent will be a Number representing the old value and the new value will be a Number representing the new value

See Also:

getAccessibleValue()