protected class

JTree.AccessibleJTree.AccessibleJTreeNode

extends AccessibleContext
implements Accessible AccessibleAction AccessibleComponent AccessibleSelection
java.lang.Object
   ↳ javax.accessibility.AccessibleContext
     ↳ javax.swing.JTree.AccessibleJTree.AccessibleJTreeNode

Class Overview

This class implements accessibility support for the JTree child. It provides an implementation of the Java Accessibility API appropriate to tree nodes.

Summary

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Inherited Constants
From class javax.accessibility.AccessibleContext
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Inherited Fields
From class javax.accessibility.AccessibleContext
From interface javax.accessibility.AccessibleAction
Public Constructors
JTree.AccessibleJTree.AccessibleJTreeNode(JTree t, TreePath p, Accessible ap)
Constructs an AccessibleJTreeNode
Public Methods
void addAccessibleSelection(int i)
Adds the specified selected item in the object to the object's selection.
void addFocusListener(FocusListener l)
Adds the specified focus listener to receive focus events from this component.
void addPropertyChangeListener(PropertyChangeListener l)
Add a PropertyChangeListener to the listener list.
void clearAccessibleSelection()
Clears the selection in the object, so that nothing in the object is selected.
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.
boolean doAccessibleAction(int i)
Perform the specified Action on the tree node.
AccessibleAction getAccessibleAction()
Get the AccessibleAction associated with this object.
int getAccessibleActionCount()
Returns the number of accessible actions available in this tree node.
String getAccessibleActionDescription(int i)
Return a description of the specified action of the tree node.
Accessible getAccessibleAt(Point p)
Returns the Accessible child, if one exists, contained at the local coordinate Point.
Accessible getAccessibleChild(int i)
Return the specified Accessible child of the object.
int getAccessibleChildrenCount()
Returns the number of accessible children in the object.
AccessibleComponent getAccessibleComponent()
Get the AccessibleComponent associated with this object.
AccessibleContext getAccessibleContext()
Get the AccessibleContext associated with this tree node.
String getAccessibleDescription()
Get the accessible description of this object.
int getAccessibleIndexInParent()
Get the index of this object in its accessible parent.
String getAccessibleName()
Get the accessible name of this object.
Accessible getAccessibleParent()
Get the Accessible parent of this object.
AccessibleRole getAccessibleRole()
Get the role of this object.
AccessibleSelection getAccessibleSelection()
Get the AccessibleSelection associated with this object if one exists.
Accessible getAccessibleSelection(int i)
Returns an Accessible representing the specified selected item in the object.
int getAccessibleSelectionCount()
Returns the number of items currently selected.
AccessibleStateSet getAccessibleStateSet()
Get the state set of this object.
AccessibleText getAccessibleText()
Get the AccessibleText associated with this object if one exists.
AccessibleValue getAccessibleValue()
Get the AccessibleValue associated with this object if one exists.
Color getBackground()
Get the background color of this object.
Rectangle getBounds()
Gets the bounds of this object in the form of a Rectangle object.
Cursor getCursor()
Gets the Cursor of this object.
Font getFont()
Gets the Font of this object.
FontMetrics getFontMetrics(Font f)
Gets the FontMetrics of this object.
Color getForeground()
Get the foreground color of this object.
Locale getLocale()
Gets the locale of the component.
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.
Point getLocationOnScreen()
Returns the location of the object on the screen.
Dimension getSize()
Returns the size of this object in the form of a Dimension object.
boolean isAccessibleChildSelected(int i)
Returns true if the current child of this object is selected.
boolean isEnabled()
Determines if the object is enabled.
boolean isFocusTraversable()
Returns whether this object can accept focus or not.
boolean isShowing()
Determines if the object is showing.
boolean isVisible()
Determines if the object is visible.
void removeAccessibleSelection(int i)
Removes the specified selected item in the object from the object's selection.
void removeFocusListener(FocusListener l)
Removes the specified focus listener so it no longer receives focus events from this component.
void removePropertyChangeListener(PropertyChangeListener l)
Remove a PropertyChangeListener from the listener list.
void requestFocus()
Requests focus for this object.
void selectAllAccessibleSelection()
Causes every selected item in the object to be selected if the object supports multiple selections.
void setAccessibleDescription(String s)
Set the accessible description of this object.
void setAccessibleName(String s)
Set the localized accessible name of this object.
void setBackground(Color c)
Set the background color of this object.
void setBounds(Rectangle r)
Sets the bounds of this object in the form of a Rectangle object.
void setCursor(Cursor c)
Sets the Cursor of this object.
void setEnabled(boolean b)
Sets the enabled state of the object.
void setFont(Font f)
Sets the Font of this object.
void setForeground(Color c)
Sets the foreground color of this object.
void setLocation(Point p)
Sets the location of the object relative to the parent.
void setSize(Dimension d)
Resizes this object so that it has width and height.
void setVisible(boolean b)
Sets the visible state of the object.
Protected Methods
Point getLocationInJTree()
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Inherited Methods
From class javax.accessibility.AccessibleContext
From class java.lang.Object
From interface javax.accessibility.Accessible
From interface javax.accessibility.AccessibleAction
From interface javax.accessibility.AccessibleComponent
From interface javax.accessibility.AccessibleSelection

Public Constructors

public JTree.AccessibleJTree.AccessibleJTreeNode (JTree t, TreePath p, Accessible ap)

Constructs an AccessibleJTreeNode

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 addFocusListener (FocusListener l)

Adds the specified focus listener to receive focus events from this component.

Parameters
l the focus listener

public void addPropertyChangeListener (PropertyChangeListener l)

Add a PropertyChangeListener to the listener list. The listener is registered for all properties.

Parameters
l The PropertyChangeListener to be added

public void clearAccessibleSelection ()

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

public 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.

Parameters
p the Point relative to the coordinate system of the object
Returns
  • true if object contains Point; otherwise false

public boolean doAccessibleAction (int i)

Perform the specified Action on the tree node. If this node is not a leaf, there is at least one action which can be done (toggle expand), in addition to any available on the object behind the TreeCellRenderer.

Parameters
i zero-based index of actions
Returns
  • true if the the action was performed; else false.

public AccessibleAction getAccessibleAction ()

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

Returns
  • this object

public int getAccessibleActionCount ()

Returns the number of accessible actions available in this tree node. If this node is not a leaf, there is at least one action (toggle expand), in addition to any available on the object behind the TreeCellRenderer.

Returns
  • the number of Actions in this object

public String getAccessibleActionDescription (int i)

Return a description of the specified action of the tree node. If this node is not a leaf, there is at least one action description (toggle expand), in addition to any available on the object behind the TreeCellRenderer.

Parameters
i zero-based index of the actions
Returns
  • a description of the action

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 specified Accessible child of the object.

Parameters
i zero-based index of child
Returns
  • the Accessible child of the object

public int getAccessibleChildrenCount ()

Returns the number of accessible children in the object.

Returns
  • the number of accessible children in the object.

public AccessibleComponent getAccessibleComponent ()

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

Returns
  • this object

public AccessibleContext getAccessibleContext ()

Get the AccessibleContext associated with this tree node. In the implementation of the Java Accessibility API for this class, return this object, which is its own AccessibleContext.

Returns
  • this object

public String getAccessibleDescription ()

Get the accessible description of this object.

Returns
  • the localized description of the object; null if this object does not have a description

public int getAccessibleIndexInParent ()

Get the index of this object in its accessible parent.

Returns
  • the index of this object in its parent; -1 if this object does not have an accessible parent.
See Also

public String getAccessibleName ()

Get the accessible name of this object.

Returns
  • the localized name of the object; null if this object does not have a name

public Accessible getAccessibleParent ()

Get the Accessible parent of this object.

Returns
  • the Accessible parent of this object; null if this 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
See Also

public AccessibleSelection getAccessibleSelection ()

Get the AccessibleSelection associated with this object if one exists. Otherwise return null.

Returns
  • the AccessibleSelection, or null

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 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 AccessibleStateSet getAccessibleStateSet ()

Get the state set of this object.

Returns
  • an instance of AccessibleStateSet containing the current state set of the object
See Also

public AccessibleText getAccessibleText ()

Get the AccessibleText associated with this object if one exists. Otherwise return null.

Returns
  • the AccessibleText, or null

public AccessibleValue getAccessibleValue ()

Get the AccessibleValue associated with this object if one exists. Otherwise return null.

Returns
  • the AccessibleValue, or null

public Color getBackground ()

Get the background color of this object.

Returns
  • the background color, if supported, of the object; otherwise, null

public Rectangle getBounds ()

Gets the bounds of this object in the form of a Rectangle object. The bounds specify this object's width, height, and location relative to its parent.

Returns
  • A rectangle indicating this component's bounds; null if this object is not on the screen.

public Cursor getCursor ()

Gets the Cursor of this object.

Returns
  • the Cursor, if supported, of the object; otherwise, null

public Font getFont ()

Gets the Font of this object.

Returns
  • the Font,if supported, for the object; otherwise, null

public FontMetrics getFontMetrics (Font f)

Gets the FontMetrics of this object.

Parameters
f the Font
Returns
  • the FontMetrics, if supported, the object; otherwise, null

public Color getForeground ()

Get the foreground color of this object.

Returns
  • the foreground color, if supported, of the object; otherwise, null

public Locale getLocale ()

Gets the locale of the component. If the component does not have a locale, then the locale of its parent is returned.

Returns
  • This component's locale. If this component does not have a locale, the locale of its parent is returned.
Throws
IllegalComponentStateException If the Component does not have its own locale and has not yet been added to a containment hierarchy such that the locale can be determined from the containing parent.
See Also

public 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.

Returns
  • An instance of Point representing the top-left corner of the object's bounds in the coordinate space of the screen; null if this object or its parent are not on the screen

public Point getLocationOnScreen ()

Returns the location of the object on the screen.

Returns
  • the location of the object on screen; null if this object is not on the screen

public Dimension getSize ()

Returns the size of this object in the form of a Dimension object. The height field of the Dimension object contains this object's height, and the width field of the Dimension object contains this object's width.

Returns
  • A Dimension object that indicates the size of this component; null if this object is not on the screen

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.
See Also

public boolean isEnabled ()

Determines if the object is enabled. Objects that are enabled will also have the AccessibleState.ENABLED state set in their AccessibleStateSets.

Returns
  • true if object is enabled; otherwise, false

public boolean isFocusTraversable ()

Returns whether this object can accept focus or not. Objects that can accept focus will also have the AccessibleState.FOCUSABLE state set in their AccessibleStateSets.

Returns
  • true if object can accept focus; otherwise false

public boolean isShowing ()

Determines if the object is showing. This is determined by checking the visibility of the object and its ancestors. Note: this will return true even if the object is obscured by another (for example, it is underneath a menu that was pulled down).

Returns
  • true if object is showing; otherwise, false

public boolean isVisible ()

Determines if the object is visible. Note: this means that the object intends to be visible; however, it may not be showing on the screen because one of the objects that this object is contained by is currently not visible. To determine if an object is showing on the screen, use isShowing().

Objects that are visible will also have the AccessibleState.VISIBLE state set in their AccessibleStateSets.

Returns
  • true if object is visible; otherwise, 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 removeFocusListener (FocusListener l)

Removes the specified focus listener so it no longer receives focus events from this component.

Parameters
l the focus listener

public void removePropertyChangeListener (PropertyChangeListener l)

Remove a PropertyChangeListener from the listener list. This removes a PropertyChangeListener that was registered for all properties.

Parameters
l The PropertyChangeListener to be removed

public void requestFocus ()

Requests focus for this object. If this object cannot accept focus, nothing will happen. Otherwise, the object will attempt to take focus.

public void selectAllAccessibleSelection ()

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

public void setAccessibleDescription (String s)

Set the accessible description of this object.

Parameters
s the new localized description of the object

public void setAccessibleName (String s)

Set the localized accessible name of this object.

Parameters
s the new localized name of the object.

public void setBackground (Color c)

Set the background color of this object.

Parameters
c the new Color for the background

public void setBounds (Rectangle r)

Sets the bounds of this object in the form of a Rectangle object. The bounds specify this object's width, height, and location relative to its parent.

Parameters
r rectangle indicating this component's bounds

public void setCursor (Cursor c)

Sets the Cursor of this object.

Parameters
c the new Cursor for the object

public void setEnabled (boolean b)

Sets the enabled state of the object.

Parameters
b if true, enables this object; otherwise, disables it

public void setFont (Font f)

Sets the Font of this object.

Parameters
f the new Font for the object

public void setForeground (Color c)

Sets the foreground color of this object.

Parameters
c the new Color for the foreground

public void setLocation (Point p)

Sets the location of the object relative to the parent.

Parameters
p the new position for the top-left corner

public void setSize (Dimension d)

Resizes this object so that it has width and height.

Parameters
d The dimension specifying the new size of the object.

public void setVisible (boolean b)

Sets the visible state of the object.

Parameters
b if true, shows this object; otherwise, hides it

Protected Methods

protected Point getLocationInJTree ()