Java™ Platform
Standard Ed. 6

javax.swing.event
Class AncestorEvent

java.lang.Object
  extended by java.util.EventObject
      extended by java.awt.AWTEvent
          extended by javax.swing.event.AncestorEvent
All Implemented Interfaces:
Serializable

public class AncestorEvent
extends AWTEvent

An event reported to a child component that originated from an ancestor in the component hierarchy.

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 JavaBeansTM has been added to the java.beans package. Please see XMLEncoder.


Field Summary
static int ANCESTOR_ADDED
          An ancestor-component was added to the hierarchy of visible objects (made visible), and is currently being displayed.
static int ANCESTOR_MOVED
          An ancestor-component changed its position on the screen.
static int ANCESTOR_REMOVED
          An ancestor-component was removed from the hierarchy of visible objects (hidden) and is no longer being displayed.
 
Fields inherited from class java.awt.AWTEvent
ACTION_EVENT_MASK, ADJUSTMENT_EVENT_MASK, COMPONENT_EVENT_MASK, consumed, CONTAINER_EVENT_MASK, FOCUS_EVENT_MASK, HIERARCHY_BOUNDS_EVENT_MASK, HIERARCHY_EVENT_MASK, id, INPUT_METHOD_EVENT_MASK, INVOCATION_EVENT_MASK, ITEM_EVENT_MASK, KEY_EVENT_MASK, MOUSE_EVENT_MASK, MOUSE_MOTION_EVENT_MASK, MOUSE_WHEEL_EVENT_MASK, PAINT_EVENT_MASK, RESERVED_ID_MAX, TEXT_EVENT_MASK, WINDOW_EVENT_MASK, WINDOW_FOCUS_EVENT_MASK, WINDOW_STATE_EVENT_MASK
 
Fields inherited from class java.util.EventObject
source
 
Constructor Summary
AncestorEvent(JComponent source, int id, Container ancestor, Container ancestorParent)
          Constructs an AncestorEvent object to identify a change in an ancestor-component's display-status.
 
Method Summary
 Container getAncestor()
          Returns the ancestor that the event actually occurred on.
 Container getAncestorParent()
          Returns the parent of the ancestor the event actually occurred on.
 JComponent getComponent()
          Returns the component that the listener was added to.
 
Methods inherited from class java.awt.AWTEvent
consume, getID, isConsumed, paramString, setSource, toString
 
Methods inherited from class java.util.EventObject
getSource
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

ANCESTOR_ADDED

public static final int ANCESTOR_ADDED
An ancestor-component was added to the hierarchy of visible objects (made visible), and is currently being displayed.

See Also:
Constant Field Values

ANCESTOR_REMOVED

public static final int ANCESTOR_REMOVED
An ancestor-component was removed from the hierarchy of visible objects (hidden) and is no longer being displayed.

See Also:
Constant Field Values

ANCESTOR_MOVED

public static final int ANCESTOR_MOVED
An ancestor-component changed its position on the screen.

See Also:
Constant Field Values
Constructor Detail

AncestorEvent

public AncestorEvent(JComponent source,
                     int id,
                     Container ancestor,
                     Container ancestorParent)
Constructs an AncestorEvent object to identify a change in an ancestor-component's display-status.

Parameters:
source - the JComponent that originated the event (typically this)
id - an int specifying ANCESTOR_ADDED, ANCESTOR_REMOVED or ANCESTOR_MOVED
ancestor - a Container object specifying the ancestor-component whose display-status changed
ancestorParent - a Container object specifying the ancestor's parent
Method Detail

getAncestor

public Container getAncestor()
Returns the ancestor that the event actually occurred on.


getAncestorParent

public Container getAncestorParent()
Returns the parent of the ancestor the event actually occurred on. This is most interesting in an ANCESTOR_REMOVED event, as the ancestor may no longer be in the component hierarchy.


getComponent

public JComponent getComponent()
Returns the component that the listener was added to.


Java™ Platform
Standard Ed. 6

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