Class JTree.AccessibleJTree.AccessibleJTreeNode

java.lang.Object
javax.accessibility.AccessibleContext
javax.swing.JTree.AccessibleJTree.AccessibleJTreeNode
All Implemented Interfaces:
Accessible, AccessibleAction, AccessibleComponent, AccessibleSelection
Enclosing class:
JTree.AccessibleJTree
protected class JTree.AccessibleJTree.AccessibleJTreeNode extends AccessibleContext implements Accessible, AccessibleComponent, AccessibleSelection, AccessibleAction
This class implements accessibility support for the JTree child. It provides an implementation of the Java Accessibility API appropriate to tree nodes.

Field Summary

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

Fields declared in interface javax.accessibility.AccessibleAction

CLICK, DECREMENT, INCREMENT, TOGGLE_EXPAND, TOGGLE_POPUP

Constructor Summary

Constructor Description
AccessibleJTreeNode(JTree t, TreePath p, Accessible ap)
Constructs an AccessibleJTreeNode

Method Summary

Modifier and Type Method Description
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.
protected Point getLocationInJTree()
Returns the relative location of the node
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.

Methods declared in class javax.accessibility.AccessibleContext

firePropertyChange, getAccessibleEditableText, getAccessibleIcon, getAccessibleRelationSet, getAccessibleTable, setAccessibleParent

Methods declared in class java.lang.Object

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

Constructor Details

AccessibleJTreeNode

public AccessibleJTreeNode(JTree t, TreePath p, Accessible ap)
Constructs an AccessibleJTreeNode
Parameters:
t - an instance of JTree
p - an instance of TreePath
ap - an instance of Accessible
Since:
1.4

Method Details

getAccessibleContext

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.
Specified by:
getAccessibleContext in interface Accessible
Returns:
this object

getAccessibleName

public String getAccessibleName()
Get the accessible name of this object.
Overrides:
getAccessibleName in class AccessibleContext
Returns:
the localized name of the object; null if this object does not have a name
See Also:

setAccessibleName

public void setAccessibleName(String s)
Set the localized accessible name of this object.
Overrides:
setAccessibleName in class AccessibleContext
Parameters:
s - the new localized name of the object.
See Also:

getAccessibleDescription

public String getAccessibleDescription()
Get the accessible description of this object.
Overrides:
getAccessibleDescription in class AccessibleContext
Returns:
the localized description of the object; null if this object does not have a description
See Also:

setAccessibleDescription

public void setAccessibleDescription(String s)
Set the accessible description of this object.
Overrides:
setAccessibleDescription in class AccessibleContext
Parameters:
s - the new localized description of the object
See Also:

getAccessibleRole

public AccessibleRole getAccessibleRole()
Get the role of this object.
Specified by:
getAccessibleRole in class AccessibleContext
Returns:
an instance of AccessibleRole describing the role of the object
See Also:

getAccessibleStateSet

public AccessibleStateSet getAccessibleStateSet()
Get the state set of this object.
Specified by:
getAccessibleStateSet in class AccessibleContext
Returns:
an instance of AccessibleStateSet containing the current state set of the object
See Also:

getAccessibleParent

public Accessible getAccessibleParent()
Get the Accessible parent of this object.
Overrides:
getAccessibleParent in class AccessibleContext
Returns:
the Accessible parent of this object; null if this object does not have an Accessible parent

getAccessibleIndexInParent

public int getAccessibleIndexInParent()
Get the index of this object in its accessible parent.
Specified by:
getAccessibleIndexInParent in class AccessibleContext
Returns:
the index of this object in its parent; -1 if this object does not have an accessible parent.
See Also:

getAccessibleChildrenCount

public int getAccessibleChildrenCount()
Returns the number of accessible children in the object.
Specified by:
getAccessibleChildrenCount in class AccessibleContext
Returns:
the number of accessible children in the object.

getAccessibleChild

public Accessible getAccessibleChild(int i)
Return the specified Accessible child of the object.
Specified by:
getAccessibleChild in class AccessibleContext
Parameters:
i - zero-based index of child
Returns:
the Accessible child of the object
See Also:

getLocale

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.
Specified by:
getLocale in class AccessibleContext
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:

addPropertyChangeListener

public void addPropertyChangeListener(PropertyChangeListener l)
Add a PropertyChangeListener to the listener list. The listener is registered for all properties.
Overrides:
addPropertyChangeListener in class AccessibleContext
Parameters:
l - The PropertyChangeListener to be added
See Also:

removePropertyChangeListener

public void removePropertyChangeListener(PropertyChangeListener l)
Remove a PropertyChangeListener from the listener list. This removes a PropertyChangeListener that was registered for all properties.
Overrides:
removePropertyChangeListener in class AccessibleContext
Parameters:
l - The PropertyChangeListener to be removed

getAccessibleAction

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.
Overrides:
getAccessibleAction in class AccessibleContext
Returns:
this object
See Also:

getAccessibleComponent

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.
Overrides:
getAccessibleComponent in class AccessibleContext
Returns:
this object
See Also:

getAccessibleSelection

public AccessibleSelection getAccessibleSelection()
Get the AccessibleSelection associated with this object if one exists. Otherwise return null.
Overrides:
getAccessibleSelection in class AccessibleContext
Returns:
the AccessibleSelection, or null
See Also:

getAccessibleText

public AccessibleText getAccessibleText()
Get the AccessibleText associated with this object if one exists. Otherwise return null.
Overrides:
getAccessibleText in class AccessibleContext
Returns:
the AccessibleText, or null
See Also:

getAccessibleValue

public AccessibleValue getAccessibleValue()
Get the AccessibleValue associated with this object if one exists. Otherwise return null.
Overrides:
getAccessibleValue in class AccessibleContext
Returns:
the AccessibleValue, or null
See Also:

getBackground

public Color getBackground()
Get the background color of this object.
Specified by:
getBackground in interface AccessibleComponent
Returns:
the background color, if supported, of the object; otherwise, null
See Also:

setBackground

public void setBackground(Color c)
Set the background color of this object.
Specified by:
setBackground in interface AccessibleComponent
Parameters:
c - the new Color for the background
See Also:

getForeground

public Color getForeground()
Get the foreground color of this object.
Specified by:
getForeground in interface AccessibleComponent
Returns:
the foreground color, if supported, of the object; otherwise, null
See Also:

setForeground

public void setForeground(Color c)
Description copied from interface: AccessibleComponent
Sets the foreground color of this object.
Specified by:
setForeground in interface AccessibleComponent
Parameters:
c - the new color for the foreground
See Also:

getCursor

public Cursor getCursor()
Description copied from interface: AccessibleComponent
Gets the cursor of this object.
Specified by:
getCursor in interface AccessibleComponent
Returns:
the cursor, if supported, of the object; otherwise, null
See Also:

setCursor

public void setCursor(Cursor c)
Description copied from interface: AccessibleComponent
Sets the cursor of this object.
Specified by:
setCursor in interface AccessibleComponent
Parameters:
c - the new cursor for the object
See Also:

getFont

public Font getFont()
Description copied from interface: AccessibleComponent
Gets the font of this object.
Specified by:
getFont in interface AccessibleComponent
Returns:
the font, if supported, for the object; otherwise, null
See Also:

setFont

public void setFont(Font f)
Description copied from interface: AccessibleComponent
Sets the font of this object.
Specified by:
setFont in interface AccessibleComponent
Parameters:
f - the new font for the object
See Also:

getFontMetrics

public FontMetrics getFontMetrics(Font f)
Description copied from interface: AccessibleComponent
Gets the FontMetrics of this object.
Specified by:
getFontMetrics in interface AccessibleComponent
Parameters:
f - the font for which font metrics is to be obtained
Returns:
the FontMetrics, if supported, the object; otherwise, null
See Also:

isEnabled

public boolean isEnabled()
Description copied from interface: AccessibleComponent
Determines if the object is enabled. Objects that are enabled will also have the AccessibleState.ENABLED state set in their AccessibleStateSets.
Specified by:
isEnabled in interface AccessibleComponent
Returns:
true if object is enabled; otherwise, false
See Also:

setEnabled

public void setEnabled(boolean b)
Description copied from interface: AccessibleComponent
Sets the enabled state of the object.
Specified by:
setEnabled in interface AccessibleComponent
Parameters:
b - if true, enables this object; otherwise, disables it
See Also:

isVisible

public boolean isVisible()
Description copied from interface: AccessibleComponent
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 AccessibleComponent.isShowing()

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

Specified by:
isVisible in interface AccessibleComponent
Returns:
true if object is visible; otherwise, false
See Also:

setVisible

public void setVisible(boolean b)
Description copied from interface: AccessibleComponent
Sets the visible state of the object.
Specified by:
setVisible in interface AccessibleComponent
Parameters:
b - if true, shows this object; otherwise, hides it
See Also:

isShowing

public boolean isShowing()
Description copied from interface: AccessibleComponent
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).
Specified by:
isShowing in interface AccessibleComponent
Returns:
true if object is showing; otherwise, false

contains

public boolean contains(Point p)
Description copied from interface: AccessibleComponent
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.
Specified by:
contains in interface AccessibleComponent
Parameters:
p - the point relative to the coordinate system of the object
Returns:
true if object contains point; otherwise false
See Also:

getLocationOnScreen

public Point getLocationOnScreen()
Description copied from interface: AccessibleComponent
Returns the location of the object on the screen.
Specified by:
getLocationOnScreen in interface AccessibleComponent
Returns:
the location of the object on screen; null if this object is not on the screen
See Also:

getLocationInJTree

protected Point getLocationInJTree()
Returns the relative location of the node
Returns:
the relative location of the node

getLocation

public Point getLocation()
Description copied from interface: AccessibleComponent
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.
Specified by:
getLocation in interface AccessibleComponent
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
See Also:

setLocation

public void setLocation(Point p)
Description copied from interface: AccessibleComponent
Sets the location of the object relative to the parent.
Specified by:
setLocation in interface AccessibleComponent
Parameters:
p - the new position for the top-left corner
See Also:

getBounds

public Rectangle getBounds()
Description copied from interface: AccessibleComponent
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.
Specified by:
getBounds in interface AccessibleComponent
Returns:
A rectangle indicating this component's bounds; null if this object is not on the screen.
See Also:

setBounds

public void setBounds(Rectangle r)
Description copied from interface: AccessibleComponent
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.
Specified by:
setBounds in interface AccessibleComponent
Parameters:
r - rectangle indicating this component's bounds
See Also:

getSize

public Dimension getSize()
Description copied from interface: AccessibleComponent
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.
Specified by:
getSize in interface AccessibleComponent
Returns:
A Dimension object that indicates the size of this component; null if this object is not on the screen
See Also:

setSize

public void setSize(Dimension d)
Description copied from interface: AccessibleComponent
Resizes this object so that it has width and height.
Specified by:
setSize in interface AccessibleComponent
Parameters:
d - The dimension specifying the new size of the object
See Also:

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
Parameters:
p - point in local coordinates of this Accessible
Returns:
the Accessible, if it exists, at the specified location; else null

isFocusTraversable

public boolean isFocusTraversable()
Description copied from interface: AccessibleComponent
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.
Specified by:
isFocusTraversable in interface AccessibleComponent
Returns:
true if object can accept focus; otherwise false
See Also:

requestFocus

public void requestFocus()
Description copied from interface: AccessibleComponent
Requests focus for this object. If this object cannot accept focus, nothing will happen. Otherwise, the object will attempt to take focus.
Specified by:
requestFocus in interface AccessibleComponent
See Also:

addFocusListener

public void addFocusListener(FocusListener l)
Description copied from interface: AccessibleComponent
Adds the specified focus listener to receive focus events from this component.
Specified by:
addFocusListener in interface AccessibleComponent
Parameters:
l - the focus listener
See Also:

removeFocusListener

public void removeFocusListener(FocusListener l)
Description copied from interface: AccessibleComponent
Removes the specified focus listener so it no longer receives focus events from this component.
Specified by:
removeFocusListener in interface AccessibleComponent
Parameters:
l - the focus listener
See Also:

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:

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:

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:

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:

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

getAccessibleActionCount

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.
Specified by:
getAccessibleActionCount in interface AccessibleAction
Returns:
the number of Actions in this object

getAccessibleActionDescription

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.
Specified by:
getAccessibleActionDescription in interface AccessibleAction
Parameters:
i - zero-based index of the actions
Returns:
a description of the action
See Also:

doAccessibleAction

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.
Specified by:
doAccessibleAction in interface AccessibleAction
Parameters:
i - zero-based index of actions
Returns:
true if the action was performed; else false.
See Also:

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