Class JTree.AccessibleJTree

All Implemented Interfaces:
Serializable, EventListener, 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™ has been added to the java.beans package. Please see XMLEncoder.

See Also:
Serialized Form

Nested Classes

Modifier and Type Class Description
protected class  JTree.AccessibleJTree.AccessibleJTreeNode

This class implements accessibility support for the JTree child.

Nested classes/interfaces declared in class javax.swing.JComponent.AccessibleJComponent

JComponent.AccessibleJComponent.AccessibleContainerHandler, JComponent.AccessibleJComponent.AccessibleFocusHandler

Nested classes/interfaces declared in class java.awt.Component.AccessibleAWTComponent

Component.AccessibleAWTComponent.AccessibleAWTComponentHandler, Component.AccessibleAWTComponent.AccessibleAWTFocusHandler

Fields

Fields declared in class javax.swing.JComponent.AccessibleJComponent

accessibleFocusHandler

Fields declared in class java.awt.Container.AccessibleAWTContainer

accessibleContainerHandler

Fields declared in class java.awt.Component.AccessibleAWTComponent

accessibleAWTComponentHandler, accessibleAWTFocusHandler

Fields declared in class javax.accessibility.AccessibleContext

ACCESSIBLE_ACTION_PROPERTY, ACCESSIBLE_ACTIVE_DESCENDANT_PROPERTY, ACCESSIBLE_CARET_PROPERTY, ACCESSIBLE_CHILD_PROPERTY, ACCESSIBLE_COMPONENT_BOUNDS_CHANGED, ACCESSIBLE_DESCRIPTION_PROPERTY, ACCESSIBLE_HYPERTEXT_OFFSET, ACCESSIBLE_INVALIDATE_CHILDREN, ACCESSIBLE_NAME_PROPERTY, ACCESSIBLE_SELECTION_PROPERTY, ACCESSIBLE_STATE_PROPERTY, ACCESSIBLE_TABLE_CAPTION_CHANGED, ACCESSIBLE_TABLE_COLUMN_DESCRIPTION_CHANGED, ACCESSIBLE_TABLE_COLUMN_HEADER_CHANGED, ACCESSIBLE_TABLE_MODEL_CHANGED, ACCESSIBLE_TABLE_ROW_DESCRIPTION_CHANGED, ACCESSIBLE_TABLE_ROW_HEADER_CHANGED, ACCESSIBLE_TABLE_SUMMARY_CHANGED, ACCESSIBLE_TEXT_ATTRIBUTES_CHANGED, ACCESSIBLE_TEXT_PROPERTY, ACCESSIBLE_VALUE_PROPERTY, ACCESSIBLE_VISIBLE_DATA_PROPERTY, accessibleDescription, accessibleName, accessibleParent

Constructors

Constructor Description
AccessibleJTree()

Constructs AccessibleJTree

Methods

Modifier and Type Method Description
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.
AccessibleSelection getAccessibleSelection()

Get the AccessibleSelection associated with this object.
Accessible getAccessibleSelection​(int i)

Returns an Accessible representing the specified selected item in the 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.

Methods declared in class javax.swing.JComponent.AccessibleJComponent

addPropertyChangeListener, getAccessibleDescription, getAccessibleKeyBinding, getAccessibleName, getAccessibleStateSet, getBorderTitle, getTitledBorderText, getToolTipText, removePropertyChangeListener

Methods declared in class java.awt.Component.AccessibleAWTComponent

addFocusListener, contains, getAccessibleComponent, getAccessibleParent, getBackground, getBounds, getCursor, getFont, getFontMetrics, getForeground, getLocale, getLocation, getLocationOnScreen, getSize, isEnabled, isFocusTraversable, isShowing, isVisible, removeFocusListener, requestFocus, setBackground, setBounds, setCursor, setEnabled, setFont, setForeground, setLocation, setSize, setVisible

Methods declared in class javax.accessibility.AccessibleContext

firePropertyChange, getAccessibleAction, getAccessibleEditableText, getAccessibleIcon, getAccessibleRelationSet, getAccessibleTable, getAccessibleText, getAccessibleValue, setAccessibleDescription, setAccessibleName, setAccessibleParent

Methods declared in class java.lang.Object

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

Methods declared in interface javax.accessibility.AccessibleComponent

addFocusListener, contains, getBackground, getBounds, getCursor, getFont, getFontMetrics, getForeground, getLocation, getLocationOnScreen, getSize, isEnabled, isFocusTraversable, isShowing, isVisible, removeFocusListener, requestFocus, setBackground, setBounds, setCursor, setEnabled, setFont, setForeground, setLocation, setSize, setVisible

Constructors

AccessibleJTree

public AccessibleJTree()

Constructs AccessibleJTree

Methods

valueChanged

public void valueChanged(TreeSelectionEvent e)

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

Specified by:
valueChanged in interface TreeSelectionListener
Parameters:
e - ListSelectionEvent

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.

treeNodesChanged

public void treeNodesChanged(TreeModelEvent e)

Tree Model Node change notification.

Specified by:
treeNodesChanged in interface TreeModelListener
Parameters:
e - a Tree Model event

treeNodesInserted

public void treeNodesInserted(TreeModelEvent e)

Tree Model Node change notification.

Specified by:
treeNodesInserted in interface TreeModelListener
Parameters:
e - a Tree node insertion event

treeNodesRemoved

public void treeNodesRemoved(TreeModelEvent e)

Tree Model Node change notification.

Specified by:
treeNodesRemoved in interface TreeModelListener
Parameters:
e - a Tree node(s) removal event

treeStructureChanged

public void treeStructureChanged(TreeModelEvent e)

Tree Model structure change change notification.

Specified by:
treeStructureChanged in interface TreeModelListener
Parameters:
e - a Tree Model event

treeCollapsed

public void treeCollapsed(TreeExpansionEvent e)

Tree Collapsed notification.

Specified by:
treeCollapsed in interface TreeExpansionListener
Parameters:
e - a TreeExpansionEvent

treeExpanded

public void treeExpanded(TreeExpansionEvent e)

Tree Model Expansion notification.

Specified by:
treeExpanded in interface TreeExpansionListener
Parameters:
e - a Tree node insertion event

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
See Also:
AccessibleRole

getAccessibleAt

public Accessible getAccessibleAt(Point p)

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

Specified by:
getAccessibleAt in interface AccessibleComponent
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

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.

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
See Also:
AccessibleContext.getAccessibleChildrenCount()

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.
See Also:
Component.AccessibleAWTComponent.getAccessibleParent()

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
See Also:
AccessibleSelection

getAccessibleSelectionCount

public int getAccessibleSelectionCount()

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

Specified by:
getAccessibleSelectionCount in interface AccessibleSelection
Returns:
the number of items currently selected.

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.

Specified by:
getAccessibleSelection in interface AccessibleSelection
Parameters:
i - the zero-based index of selected items
Returns:
an Accessible containing the selected item
See Also:
AccessibleSelection.getAccessibleSelectionCount()

isAccessibleChildSelected

public boolean isAccessibleChildSelected(int i)

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

Specified by:
isAccessibleChildSelected in interface AccessibleSelection
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
See Also:
AccessibleContext.getAccessibleChild(int)

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.

Specified by:
addAccessibleSelection in interface AccessibleSelection
Parameters:
i - the zero-based index of selectable items
See Also:
AccessibleContext.getAccessibleChild(int)

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.

Specified by:
removeAccessibleSelection in interface AccessibleSelection
Parameters:
i - the zero-based index of selectable items
See Also:
AccessibleContext.getAccessibleChild(int)

clearAccessibleSelection

public void clearAccessibleSelection()

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

Specified by:
clearAccessibleSelection in interface AccessibleSelection

selectAllAccessibleSelection

public void selectAllAccessibleSelection()

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

Specified by:
selectAllAccessibleSelection in interface AccessibleSelection

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https://docs.oracle.com/en/java/javase/11/docs/api/java.desktop/javax/swing/JTree.AccessibleJTree.html