nextapp.echo.event
Class HierarchyEvent

java.lang.Object
  java.util.EventObject
      nextapp.echo.event.HierarchyEvent

All Implemented Interfaces:

java.io.Serializable

public class HierarchyEvent
extends java.util.EventObject

An event describing a change to the component hierarchy.

See Also:

Serialized Form

Field Summary

static int	PARENT_CHANGED
static int	REGISTRATION_CHANGED
static int	SHOWING_CHANGED

Fields inherited from class java.util.EventObject

source

Constructor Summary

HierarchyEvent(Component source, long changeFlags, Component changed, Component changedParent)
Creates a new HierarchyEvent

Method Summary

Component	getChanged() Returns the component whose state within the hierarchy changed.
Component	getChangedParent() Returns the parent (or former parent) of the component whose state within the hierarchy changed.
long	getChangeFlags() Returns a bitmask describing the change to the heirarchy.
Component	getComponent() Returns the component which generated this event.
boolean	isParentChanged() Returns true if the Component's parent has changed.
boolean	isRegistrationChanged() Returns true if the Component's registration state has changed.
boolean	isShowingChanged() Returns true if the Component's showing state has changed.

Methods inherited from class java.util.EventObject

getSource, toString

Methods inherited from class java.lang.Object

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

Field Detail

SHOWING_CHANGED

public static final int SHOWING_CHANGED

See Also:

Constant Field Values

PARENT_CHANGED

public static final int PARENT_CHANGED

See Also:

Constant Field Values

REGISTRATION_CHANGED

public static final int REGISTRATION_CHANGED

See Also:

Constant Field Values

Constructor Detail

HierarchyEvent

public HierarchyEvent(Component source,
                      long changeFlags,
                      Component changed,
                      Component changedParent)

Creates a new HierarchyEvent

Parameters:

source - The generator of the event.

Method Detail

getChangeFlags

public long getChangeFlags()

Returns a bitmask describing the change to the heirarchy.

Returns:

A bitmask describing the change to the hierarchy, consisting of the following bits:

• SHOWING_CHANGED
• PARENT_CHANGED
• REGISTRATION_CHANGED

getChanged

public Component getChanged()

Returns the component whose state within the hierarchy changed.

Returns:

The component whose state within the hierarchy changed.

getChangedParent

public Component getChangedParent()

Returns the parent (or former parent) of the component whose state within the hierarchy changed.

Returns:

The parent (or former parent) of the component whose state within the hierarchy changed.

getComponent

public Component getComponent()

Returns the component which generated this event.

Returns:

The component which generated this event.

isParentChanged

public boolean isParentChanged()

Returns true if the Component's parent has changed.

Returns:

True if the Component's parent has changed.

isRegistrationChanged

public boolean isRegistrationChanged()

Returns true if the Component's registration state has changed.

Returns:

True if the Component's registration state has changed.

isShowingChanged

public boolean isShowingChanged()

Returns true if the Component's showing state has changed.

Returns:

True if the Component's showing state has changed.