javax.swing
class JTree.AccessibleJTree

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

All Implemented Interfaces:

Serializable, AccessibleComponent, AccessibleExtendedComponent, AccessibleSelection, TreeExpansionListener, TreeModelListener, TreeSelectionListener

Enclosing class:

JTree

protected class JTree.AccessibleJTree
extends JComponent.AccessibleJComponent
implements AccessibleSelection, TreeSelectionListener, TreeModelListener, TreeExpansionListener

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 {@link java.beans.XMLEncoder}.

JTree.AccessibleJTree

public JTree.AccessibleJTree()

addAccessibleSelection

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

clearAccessibleSelection

public void clearAccessibleSelection()

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

fireVisibleDataPropertyChange

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.

getAccessibleAt

public Accessible getAccessibleAt(Point p)

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

Overrides:

getAccessibleAt in class Container.AccessibleAWTContainer

Parameters:

p - point in local coordinates of this Accessible

Returns:

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

getAccessibleChild

public Accessible getAccessibleChild(int i)

Return the nth Accessible child of the object.

Overrides:

getAccessibleChild in class JComponent.AccessibleJComponent

Parameters:

i - zero-based index of child

Returns:

the nth Accessible child of the object

getAccessibleChildrenCount

public int getAccessibleChildrenCount()

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

Overrides:

getAccessibleChildrenCount in class JComponent.AccessibleJComponent

Returns:

the number of accessible children nodes in the tree.

getAccessibleIndexInParent

public int getAccessibleIndexInParent()

Get the index of this object in its accessible parent.

Overrides:

getAccessibleIndexInParent in class Component.AccessibleAWTComponent

Returns:

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

getAccessibleRole

public AccessibleRole getAccessibleRole()

Get the role of this object.

Overrides:

getAccessibleRole in class JComponent.AccessibleJComponent

Returns:

an instance of AccessibleRole describing the role of the object

getAccessibleSelection

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.

Overrides:

getAccessibleSelection in class AccessibleContext

Returns:

this object

getAccessibleSelection

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

getAccessibleSelectionCount

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.

isAccessibleChildSelected

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.

removeAccessibleSelection

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

selectAllAccessibleSelection

public void selectAllAccessibleSelection()

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

treeCollapsed

public void treeCollapsed(TreeExpansionEvent e)

Tree Collapsed notification.

Parameters:

e - a TreeExpansionEvent

treeExpanded

public void treeExpanded(TreeExpansionEvent e)

Tree Model Expansion notification.

Parameters:

e - a Tree node insertion event

treeNodesChanged

public void treeNodesChanged(TreeModelEvent e)

Tree Model Node change notification.

Parameters:

e - a Tree Model event

treeNodesInserted

public void treeNodesInserted(TreeModelEvent e)

Tree Model Node change notification.

Parameters:

e - a Tree node insertion event

treeNodesRemoved

public void treeNodesRemoved(TreeModelEvent e)

Tree Model Node change notification.

Parameters:

e - a Tree node(s) removal event

treeStructureChanged

public void treeStructureChanged(TreeModelEvent e)

Tree Model structure change change notification.

Parameters:

e - a Tree Model event

valueChanged

public void valueChanged(TreeSelectionEvent e)

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

Parameters:

e - ListSelectionEvent