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, 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^TM has been added to the java.beans package. Please see XMLEncoder.

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

protected class JTree.AccessibleJTree.AccessibleJTreeNode
This class implements accessibility support for the JTree child.

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- Nested classes/interfaces inherited from class javax.swing.JComponent.AccessibleJComponent
  JComponent.AccessibleJComponent.AccessibleContainerHandler, JComponent.AccessibleJComponent.AccessibleFocusHandler
- Nested classes/interfaces inherited from class java.awt.Component.AccessibleAWTComponent
  Component.AccessibleAWTComponent.AccessibleAWTComponentHandler, Component.AccessibleAWTComponent.AccessibleAWTFocusHandler

Field Summary
- Fields inherited from class javax.swing.JComponent.AccessibleJComponent
  accessibleFocusHandler
- Fields inherited from class java.awt.Container.AccessibleAWTContainer
  accessibleContainerHandler
- Fields inherited from class java.awt.Component.AccessibleAWTComponent
  accessibleAWTComponentHandler, accessibleAWTFocusHandler
- Fields inherited from 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

Constructor Summary

Constructors
Constructor and Description

JTree.AccessibleJTree()

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Method Summary

Methods
Modifier and Type	Method and 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.

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Methods inherited from class javax.swing.JComponent.AccessibleJComponent
addPropertyChangeListener, getAccessibleDescription, getAccessibleKeyBinding, getAccessibleName, getAccessibleStateSet, getBorderTitle, getTitledBorderText, getToolTipText, removePropertyChangeListener

Methods inherited from 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 inherited from class javax.accessibility.AccessibleContext
firePropertyChange, getAccessibleAction, getAccessibleEditableText, getAccessibleIcon, getAccessibleRelationSet, getAccessibleTable, getAccessibleText, getAccessibleValue, setAccessibleDescription, setAccessibleName, setAccessibleParent

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from 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

- Constructor Detail
  - JTree.AccessibleJTree
```
public JTree.AccessibleJTree()
```
- Method Detail
  - 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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Vielen Dank im Voraus.

Dokument erstellt 11/06/2005, zuletzt geändert 04/03/2020
Quelle des gedruckten Dokuments:https://www.gaudry.be/de/java-api-rf-javax/swing/jtree.accessiblejtree.html

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Referenzen

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Inhaltsverzeichnis Haut

Class JTree.AccessibleJTree

Nested Class Summary

Nested classes/interfaces inherited from class javax.swing.JComponent.AccessibleJComponent

Nested classes/interfaces inherited from class java.awt.Component.AccessibleAWTComponent

Field Summary

Fields inherited from class javax.swing.JComponent.AccessibleJComponent

Fields inherited from class java.awt.Container.AccessibleAWTContainer

Fields inherited from class java.awt.Component.AccessibleAWTComponent

Fields inherited from class javax.accessibility.AccessibleContext

Constructor Summary

Method Summary

Methods inherited from class javax.swing.JComponent.AccessibleJComponent

Methods inherited from class java.awt.Component.AccessibleAWTComponent

Methods inherited from class javax.accessibility.AccessibleContext

Methods inherited from class java.lang.Object

Methods inherited from interface javax.accessibility.AccessibleComponent

Constructor Detail

JTree.AccessibleJTree

Method Detail

valueChanged

fireVisibleDataPropertyChange

treeNodesChanged

treeNodesInserted

treeNodesRemoved

treeStructureChanged

treeCollapsed

treeExpanded

getAccessibleRole

getAccessibleAt

getAccessibleChildrenCount

getAccessibleChild

getAccessibleIndexInParent

getAccessibleSelection

getAccessibleSelectionCount

getAccessibleSelection

isAccessibleChildSelected

addAccessibleSelection

removeAccessibleSelection

clearAccessibleSelection

selectAllAccessibleSelection

Referenzen