protected class

JTree.AccessibleJTree

extends JComponent.AccessibleJComponent
implements AccessibleSelection TreeExpansionListener TreeModelListener TreeSelectionListener

java.lang.Object
↳	javax.accessibility.AccessibleContext
	↳	java.awt.Component.AccessibleAWTComponent
		↳	java.awt.Container.AccessibleAWTContainer
			↳	javax.swing.JComponent.AccessibleJComponent
				↳	javax.swing.JTree.AccessibleJTree

Class Overview

This class implements accessibility support for the JTree class. It provides an implementation of the Java Accessibility API appropriate to tree user-interface elements.

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans^TM has been added to the java.beans package. Please see XMLEncoder.

Summary

Nested Classes
class	JTree.AccessibleJTree.AccessibleJTreeNode	This class implements accessibility support for the `JTree` child.

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Inherited Constants

From class javax.accessibility.AccessibleContext

String	ACCESSIBLE_ACTION_PROPERTY	Constant used to indicate that the supported set of actions has changed.
String	ACCESSIBLE_ACTIVE_DESCENDANT_PROPERTY	Constant used to determine when the active descendant of a component has changed.
String	ACCESSIBLE_CARET_PROPERTY	Constant used to determine when the accessibleText caret has changed.
String	ACCESSIBLE_CHILD_PROPERTY	Constant used to determine when Accessible children are added/removed from the object.
String	ACCESSIBLE_COMPONENT_BOUNDS_CHANGED	PropertyChangeEvent which indicates that a change has occurred in a component's bounds.
String	ACCESSIBLE_DESCRIPTION_PROPERTY	Constant used to determine when the accessibleDescription property has changed.
String	ACCESSIBLE_HYPERTEXT_OFFSET	Constant used to indicate that a hypertext element has received focus.
String	ACCESSIBLE_INVALIDATE_CHILDREN	PropertyChangeEvent which indicates that a significant change has occurred to the children of a component like a tree or text.
String	ACCESSIBLE_NAME_PROPERTY	Constant used to determine when the accessibleName property has changed.
String	ACCESSIBLE_SELECTION_PROPERTY	Constant used to determine when the accessibleSelection has changed.
String	ACCESSIBLE_STATE_PROPERTY	Constant used to determine when the accessibleStateSet property has changed.
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.
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.
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.
String	ACCESSIBLE_TABLE_MODEL_CHANGED	Constant used to indicate that table data has changed.
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.
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.
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.
String	ACCESSIBLE_TEXT_ATTRIBUTES_CHANGED	PropertyChangeEvent which indicates that text attributes have changed.
String	ACCESSIBLE_TEXT_PROPERTY	PropertyChangeEvent which indicates that text has changed.
String	ACCESSIBLE_VALUE_PROPERTY	Constant used to determine when the accessibleValue property has changed.
String	ACCESSIBLE_VISIBLE_DATA_PROPERTY	Constant used to determine when the visual appearance of the object has changed.

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Inherited Fields

From class javax.swing.JComponent.AccessibleJComponent

From class java.awt.Container.AccessibleAWTContainer

From class java.awt.Component.AccessibleAWTComponent

From class javax.accessibility.AccessibleContext

Public Constructors
	JTree.AccessibleJTree()

Public Methods
void	addAccessibleSelection(int i) Adds the specified selected item in the object to the object's selection.
void	clearAccessibleSelection() Clears the selection in the object, so that nothing in the object is selected.
void	fireVisibleDataPropertyChange() Fire a visible data property change notification.
Accessible	getAccessibleAt(Point p) Returns the `Accessible` child, if one exists, contained at the local coordinate `Point`.
Accessible	getAccessibleChild(int i) Return the nth Accessible child of the object.
int	getAccessibleChildrenCount() Returns the number of top-level children nodes of this JTree.
int	getAccessibleIndexInParent() Get the index of this object in its accessible parent.
AccessibleRole	getAccessibleRole() Get the role of this object.
Accessible	getAccessibleSelection(int i) Returns an Accessible representing the specified selected item in the object.
AccessibleSelection	getAccessibleSelection() Get the AccessibleSelection associated with this object.
int	getAccessibleSelectionCount() Returns the number of items currently selected.
boolean	isAccessibleChildSelected(int i) Returns true if the current child of this object is selected.
void	removeAccessibleSelection(int i) Removes the specified selected item in the object from the object's selection.
void	selectAllAccessibleSelection() Causes every selected item in the object to be selected if the object supports multiple selections.
void	treeCollapsed(TreeExpansionEvent e) Tree Collapsed notification.
void	treeExpanded(TreeExpansionEvent e) Tree Model Expansion notification.
void	treeNodesChanged(TreeModelEvent e) Tree Model Node change notification.
void	treeNodesInserted(TreeModelEvent e) Tree Model Node change notification.
void	treeNodesRemoved(TreeModelEvent e) Tree Model Node change notification.
void	treeStructureChanged(TreeModelEvent e) Tree Model structure change change notification.
void	valueChanged(TreeSelectionEvent e) Tree Selection Listener value change method.

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Inherited Methods

From class javax.swing.JComponent.AccessibleJComponent

From class java.awt.Container.AccessibleAWTContainer

From class java.awt.Component.AccessibleAWTComponent

From class javax.accessibility.AccessibleContext

From class java.lang.Object

Object	clone() Creates and returns a copy of this object.
boolean	equals(Object obj) Indicates whether some other object is "equal to" this one.
void	finalize() Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
final Class<?>	getClass() Returns the runtime class of this `Object`.
int	hashCode() Returns a hash code value for the object.
final void	notify() Wakes up a single thread that is waiting on this object's monitor.
final void	notifyAll() Wakes up all threads that are waiting on this object's monitor.
String	toString() Returns a string representation of the object.
final void	wait() Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.
final void	wait(long timeout, int nanos) Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
final void	wait(long timeout) Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.

From interface javax.accessibility.AccessibleComponent

abstract void	addFocusListener(FocusListener l) Adds the specified focus listener to receive focus events from this component.
abstract boolean	contains(Point p) Checks whether the specified point is within this object's bounds, where the point's x and y coordinates are defined to be relative to the coordinate system of the object.
abstract Accessible	getAccessibleAt(Point p) Returns the Accessible child, if one exists, contained at the local coordinate Point.
abstract Color	getBackground() Gets the background color of this object.
abstract Rectangle	getBounds() Gets the bounds of this object in the form of a Rectangle object.
abstract Cursor	getCursor() Gets the Cursor of this object.
abstract Font	getFont() Gets the Font of this object.
abstract FontMetrics	getFontMetrics(Font f) Gets the FontMetrics of this object.
abstract Color	getForeground() Gets the foreground color of this object.
abstract Point	getLocation() Gets the location of the object relative to the parent in the form of a point specifying the object's top-left corner in the screen's coordinate space.
abstract Point	getLocationOnScreen() Returns the location of the object on the screen.
abstract Dimension	getSize() Returns the size of this object in the form of a Dimension object.
abstract boolean	isEnabled() Determines if the object is enabled.
abstract boolean	isFocusTraversable() Returns whether this object can accept focus or not.
abstract boolean	isShowing() Determines if the object is showing.
abstract boolean	isVisible() Determines if the object is visible.
abstract void	removeFocusListener(FocusListener l) Removes the specified focus listener so it no longer receives focus events from this component.
abstract void	requestFocus() Requests focus for this object.
abstract void	setBackground(Color c) Sets the background color of this object.
abstract void	setBounds(Rectangle r) Sets the bounds of this object in the form of a Rectangle object.
abstract void	setCursor(Cursor cursor) Sets the Cursor of this object.
abstract void	setEnabled(boolean b) Sets the enabled state of the object.
abstract void	setFont(Font f) Sets the Font of this object.
abstract void	setForeground(Color c) Sets the foreground color of this object.
abstract void	setLocation(Point p) Sets the location of the object relative to the parent.
abstract void	setSize(Dimension d) Resizes this object so that it has width and height.
abstract void	setVisible(boolean b) Sets the visible state of the object.

From interface javax.accessibility.AccessibleExtendedComponent

From interface javax.accessibility.AccessibleSelection

From interface javax.swing.event.TreeExpansionListener

From interface javax.swing.event.TreeModelListener

From interface javax.swing.event.TreeSelectionListener

Public Constructors

public JTree.AccessibleJTree ()

Public Methods

public void addAccessibleSelection (int i)

Adds the specified selected item in the object to the object's selection. If the object supports multiple selections, the specified item is added to any existing selection, otherwise it replaces any existing selection in the object. If the specified item is already selected, this method has no effect.

Parameters

i	the zero-based index of selectable items

public void clearAccessibleSelection ()

Clears the selection in the object, so that nothing in the object is selected.

public void fireVisibleDataPropertyChange ()

Fire a visible data property change notification. A 'visible' data property is one that represents something about the way the component appears on the display, where that appearance isn't bound to any other property. It notifies screen readers that the visual appearance of the component has changed, so they can notify the user.

public Accessible getAccessibleAt (Point p)

Returns the Accessible child, if one exists, contained at the local coordinate Point. Otherwise returns null.

Parameters

p	point in local coordinates of this `Accessible`

Returns

the Accessible, if it exists, at the specified location; else null

public Accessible getAccessibleChild (int i)

Return the nth Accessible child of the object.

Parameters

i	zero-based index of child

Returns

the nth Accessible child of the object

public int getAccessibleChildrenCount ()

Returns the number of top-level children nodes of this JTree. Each of these nodes may in turn have children nodes.

Returns

the number of accessible children nodes in the tree.

public int getAccessibleIndexInParent ()

Get the index of this object in its accessible parent.

Returns

the index of this object in its parent. Since a JTree top-level object does not have an accessible parent.

public AccessibleRole getAccessibleRole ()

Get the role of this object.

Returns

an instance of AccessibleRole describing the role of the object

public Accessible getAccessibleSelection (int i)

Returns an Accessible representing the specified selected item in the object. If there isn't a selection, or there are fewer items selected than the integer passed in, the return value will be null.

Parameters

i	the zero-based index of selected items

Returns

an Accessible containing the selected item

public AccessibleSelection getAccessibleSelection ()

Get the AccessibleSelection associated with this object. In the implementation of the Java Accessibility API for this class, return this object, which is responsible for implementing the AccessibleSelection interface on behalf of itself.

Returns

this object

public int getAccessibleSelectionCount ()

Returns the number of items currently selected. If no items are selected, the return value will be 0.

Returns

the number of items currently selected.

public boolean isAccessibleChildSelected (int i)

Returns true if the current child of this object is selected.

Parameters

i	the zero-based index of the child in this Accessible object.

Returns

true if the current child of this object is selected; else false.

public void removeAccessibleSelection (int i)

Removes the specified selected item in the object from the object's selection. If the specified item isn't currently selected, this method has no effect.

Parameters

i	the zero-based index of selectable items

public void selectAllAccessibleSelection ()

Causes every selected item in the object to be selected if the object supports multiple selections.

public void treeCollapsed (TreeExpansionEvent e)

Tree Collapsed notification.

Parameters

e	a TreeExpansionEvent

public void treeExpanded (TreeExpansionEvent e)

Tree Model Expansion notification.

Parameters

e	a Tree node insertion event

public void treeNodesChanged (TreeModelEvent e)

Tree Model Node change notification.

Parameters

e	a Tree Model event

public void treeNodesInserted (TreeModelEvent e)

Tree Model Node change notification.

Parameters

e	a Tree node insertion event

public void treeNodesRemoved (TreeModelEvent e)

Tree Model Node change notification.

Parameters

e	a Tree node(s) removal event

public void treeStructureChanged (TreeModelEvent e)

Tree Model structure change change notification.

Parameters

e	a Tree Model event

public void valueChanged (TreeSelectionEvent e)

Tree Selection Listener value change method. Used to fire the property change

Parameters

e	ListSelectionEvent

Interfaces

Classes

Enums

Exceptions

JTree.AccessibleJTree

Class Overview

Summary

Public Constructors

public JTree.AccessibleJTree ()

Public Methods

public void addAccessibleSelection (int i)

Parameters

public void clearAccessibleSelection ()

public void fireVisibleDataPropertyChange ()

public Accessible getAccessibleAt (Point p)

Parameters

Returns

public Accessible getAccessibleChild (int i)

Parameters

Returns

public int getAccessibleChildrenCount ()

Returns

public int getAccessibleIndexInParent ()

Returns

See Also

public AccessibleRole getAccessibleRole ()

Returns

See Also

public Accessible getAccessibleSelection (int i)

Parameters

Returns

public AccessibleSelection getAccessibleSelection ()

Returns

public int getAccessibleSelectionCount ()

Returns

public boolean isAccessibleChildSelected (int i)

Parameters

Returns

See Also

public void removeAccessibleSelection (int i)

Parameters

public void selectAllAccessibleSelection ()

public void treeCollapsed (TreeExpansionEvent e)

Parameters

public void treeExpanded (TreeExpansionEvent e)

Parameters

public void treeNodesChanged (TreeModelEvent e)

Parameters

public void treeNodesInserted (TreeModelEvent e)

Parameters

public void treeNodesRemoved (TreeModelEvent e)

Parameters

public void treeStructureChanged (TreeModelEvent e)

Parameters

public void valueChanged (TreeSelectionEvent e)

Parameters