org.wings.event
Class SComponentEvent

java.lang.Object
  java.util.EventObject
      java.awt.AWTEvent
          org.wings.event.SComponentEvent

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

SContainerEvent, SParentFrameEvent

public class SComponentEvent
extends AWTEvent

A low-level event which indicates that a component moved, changed size, or changed visibility (also, the root class for the other component-level events).

Component events are provided for notification purposes ONLY; WingS will automatically handle component moves and resizes internally so that GUI layout works properly regardless of whether a program is receiving these events or not.

In addition to serving as the base class for other component-related events (InputEvent, FocusEvent, WindowEvent, ContainerEvent), this class defines the events that indicate changes in a component's size, position, or visibility.

This low-level event is generated by a component object (such as a SList) when the component is moved, resized, rendered invisible, or made visible again. The event is passed to every ComponentListener or ComponentAdapter object which registered to receive such events using the component's addComponentListener method. (ComponentAdapter objects implement the ComponentListener interface.) Each such listener object gets this ComponentEvent when the event occurs.

Author:

Andre Lison

See Also:

SComponentAdapter, SComponentListener, Serialized Form

Field Summary

static int	COMPONENT_FIRST The first number in the range of ids used for component events.
static int	COMPONENT_HIDDEN This event indicates that the component was rendered invisible.
static int	COMPONENT_LAST The last number in the range of ids used for component events.
static int	COMPONENT_MOVED This event indicates that the component's position changed.
static int	COMPONENT_RESIZED This event indicates that the component's size changed.
static int	COMPONENT_SHOWN This event indicates that the component was made visible.

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

SComponentEvent(SComponent aSource, int anId)
Constructs a ComponentEvent object.

Method Summary

SComponent	getComponent() Returns the originator of the event.
String	paramString() Returns a string representing the state of this event.
String	toString()

Methods inherited from class java.awt.AWTEvent

consume, getID, isConsumed, setSource

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

COMPONENT_FIRST

public static final int COMPONENT_FIRST

The first number in the range of ids used for component events.

See Also:

Constant Field Values

COMPONENT_HIDDEN

public static final int COMPONENT_HIDDEN

This event indicates that the component was rendered invisible.

See Also:

Constant Field Values

COMPONENT_MOVED

public static final int COMPONENT_MOVED

This event indicates that the component's position changed.

See Also:

Constant Field Values

COMPONENT_RESIZED

public static final int COMPONENT_RESIZED

This event indicates that the component's size changed.

See Also:

Constant Field Values

COMPONENT_SHOWN

public static final int COMPONENT_SHOWN

This event indicates that the component was made visible.

See Also:

Constant Field Values

COMPONENT_LAST

public static final int COMPONENT_LAST

The last number in the range of ids used for component events.

See Also:

Constant Field Values

Constructor Detail

SComponentEvent

public SComponentEvent(SComponent aSource,
                       int anId)

Constructs a ComponentEvent object.

Parameters:

aSource - the Component object that originated the event

anId - an integer indicating the type of event

Method Detail

getComponent

public SComponent getComponent()

Returns the originator of the event.

Returns:

the Component object that originated the event

paramString

public String paramString()

Returns a string representing the state of this event. This method is intended to be used only for debugging purposes, and the content and format of the returned string may vary between implementations. The returned string may be empty but may not be null.

Overrides:

paramString in class AWTEvent

toString

public String toString()

Overrides:

toString in class AWTEvent