java.awt.event
Class WindowEvent

java.lang.Object
  |
  +--java.util.EventObject
        |
        +--java.awt.AWTEvent
              |
              +--java.awt.event.ComponentEvent
                    |
                    +--java.awt.event.WindowEvent

All Implemented Interfaces:

Serializable

public class WindowEvent

extends ComponentEvent

Safe:

See Also:

Serialized Form

Field Summary

(package private) int	newState
(package private) int	oldState TBS
(package private) Window	opposite The other Window involved in this focus or activation change.
private static long	serialVersionUID
static int	WINDOW_ACTIVATED Enabled: The window-activated event type.
static int	WINDOW_CLOSED Enabled: The window closed event.
static int	WINDOW_CLOSING Enabled: The "window is closing" event.
static int	WINDOW_DEACTIVATED Enabled: The window-deactivated event type.
static int	WINDOW_DEICONIFIED Enabled: The window deiconified event type.
static int	WINDOW_FIRST Enabled: The first number in the range of ids used for window events.
static int	WINDOW_GAINED_FOCUS Enabled: The window-gained-focus event type.
static int	WINDOW_ICONIFIED Enabled: The window iconified event.
static int	WINDOW_LAST Enabled: The last number in the range of ids used for window events.
static int	WINDOW_LOST_FOCUS Enabled: The window-lost-focus event type.
static int	WINDOW_OPENED Enabled: The window opened event.
static int	WINDOW_STATE_CHANGED Enabled: The window-state-changed event type.

Fields inherited from class java.awt.event.ComponentEvent

COMPONENT_FIRST, COMPONENT_HIDDEN, COMPONENT_LAST, COMPONENT_MOVED, COMPONENT_RESIZED, COMPONENT_SHOWN

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

WindowEvent(Window source, int id)
Suppressed: Constructs a WindowEvent object.

WindowEvent(Window source, int id, int oldState, int newState)
Suppressed: Constructs a WindowEvent object with the specified previous and new window states.

WindowEvent(Window source, int id, Window opposite)
Suppressed: Constructs a WindowEvent object with the specified opposite Window.

WindowEvent(Window source, int id, Window opposite, int oldState, int newState)
Suppressed: Constructs a WindowEvent object.

Method Summary

int	getNewState() Enabled: For WINDOW_STATE_CHANGED events returns the new state of the window.
int	getOldState() Enabled: For WINDOW_STATE_CHANGED events returns the previous state of the window.
Window	getOppositeWindow() Suppressed: Returns the other Window involved in this focus or activation change.
Window	getWindow() Suppressed: Returns the originator of the event.
String	paramString() Suppressed: Returns a parameter string identifying this event.

Methods inherited from class java.awt.event.ComponentEvent

getComponent

Methods inherited from class java.awt.AWTEvent

consume, getID, isConsumed, 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

WINDOW_FIRST

public static final int WINDOW_FIRST

Enabled: The first number in the range of ids used for window events.

WINDOW_OPENED

public static final int WINDOW_OPENED

Enabled: The window opened event. This event is delivered only the first time a window is made visible.

WINDOW_CLOSING

public static final int WINDOW_CLOSING

Enabled: The "window is closing" event. This event is delivered when the user attempts to close the window from the window's system menu. If the program does not explicitly hide or dispose the window while processing this event, the window close operation will be cancelled.

WINDOW_CLOSED

public static final int WINDOW_CLOSED

Enabled: The window closed event. This event is delivered after the window has been closed as the result of a call to dispose.

WINDOW_ICONIFIED

public static final int WINDOW_ICONIFIED

Enabled: The window iconified event. This event is delivered when the window has been changed from a normal to a minimized state. For many platforms, a minimized window is displayed as the icon specified in the window's iconImage property.

See Also:

java.awt.Frame#setIconImage

WINDOW_DEICONIFIED

public static final int WINDOW_DEICONIFIED

Enabled: The window deiconified event type. This event is delivered when the window has been changed from a minimized to a normal state.

WINDOW_ACTIVATED

public static final int WINDOW_ACTIVATED

Enabled: The window-activated event type. This event is delivered when the Window becomes the active Window. Only a Frame or a Dialog can be the active Window. The native windowing system may denote the active Window or its children with special decorations, such as a highlighted title bar. The active Window is always either the focused Window, or the first Frame or Dialog that is an owner of the focused Window.

WINDOW_DEACTIVATED

public static final int WINDOW_DEACTIVATED

Enabled: The window-deactivated event type. This event is delivered when the Window is no longer the active Window. Only a Frame or a Dialog can be the active Window. The native windowing system may denote the active Window or its children with special decorations, such as a highlighted title bar. The active Window is always either the focused Window, or the first Frame or Dialog that is an owner of the focused Window.

WINDOW_GAINED_FOCUS

public static final int WINDOW_GAINED_FOCUS

Enabled: The window-gained-focus event type. This event is delivered when the Window becomes the focused Window, which means that the Window, or one of its subcomponents, will receive keyboard events.

WINDOW_LOST_FOCUS

public static final int WINDOW_LOST_FOCUS

Enabled: The window-lost-focus event type. This event is delivered when a Window is no longer the focused Window, which means keyboard events will no longer be delivered to the Window or any of its subcomponents.

WINDOW_STATE_CHANGED

public static final int WINDOW_STATE_CHANGED

Enabled: The window-state-changed event type. This event is delivered when a Window's state is changed by virtue of it being iconified, maximized etc.

Since:

1.4

WINDOW_LAST

public static final int WINDOW_LAST

Enabled: The last number in the range of ids used for window events.

opposite

Window opposite

The other Window involved in this focus or activation change. For a WINDOW_ACTIVATED or WINDOW_GAINED_FOCUS event, this is the Window that lost activation or focus. For a WINDOW_DEACTIVATED or WINDOW_LOST_FOCUS event, this is the Window that gained activation or focus. For any other type of WindowEvent, or if the focus or activation change occurs with a native application, a Java application in a different VM, or with no other Window, null is returned.

Since:

1.4

See Also:

getOppositeWindow()

oldState

int oldState

TBS

newState

int newState

serialVersionUID

private static final long serialVersionUID

Constructor Detail

WindowEvent

public WindowEvent(Window source,
                   int id,
                   Window opposite,
                   int oldState,
                   int newState)

Suppressed: Constructs a WindowEvent object.

Parameters:

source - the Window object that originated the event

id - an integer indicating the type of event.

opposite - the other window involved in the focus or activation change, or null

oldState - previous state of the window for window state change event

newState - new state of the window for window state change event

Since:

1.4

WindowEvent

public WindowEvent(Window source,
                   int id,
                   Window opposite)

Suppressed: Constructs a WindowEvent object with the specified opposite Window. The opposite Window is the other Window involved in this focus or activation change. For a WINDOW_ACTIVATED or WINDOW_GAINED_FOCUS event, this is the Window that lost activation or focus. For a WINDOW_DEACTIVATED or WINDOW_LOST_FOCUS event, this is the Window that gained activation or focus. If this focus change occurs with a native application, with a Java application in a different VM, or with no other Window, then the opposite Window is null.

Note that passing in an invalid id results in unspecified behavior.

Parameters:

source - the Window object that originated the event

id - WINDOW_ACTIVATED, WINDOW_DEACTIVATED, WINDOW_GAINED_FOCUS, or WINDOW_LOST_FOCUS. It is expected that this constructor will not be used for other WindowEvent types because the opposite Window of such events will always be null

opposite - the other Window involved in the focus or activation change, or null

WindowEvent

public WindowEvent(Window source,
                   int id,
                   int oldState,
                   int newState)

Suppressed: Constructs a WindowEvent object with the specified previous and new window states.

Parameters:

source - the Window object that originated the event

id - WINDOW_STATE_CHANGED event type. It is expected that this constructor will not be used for other WindowEvent types, because the previous and new window states are meaningless for other event types.

oldState - an integer representing the previous window state

newState - an integer representing the new window state

Since:

1.4

WindowEvent

public WindowEvent(Window source,
                   int id)

Suppressed: Constructs a WindowEvent object.

Note that passing in an invalid id results in unspecified behavior.

Parameters:

source - the Window object that originated the event

id - an integer indicating the type of event

Method Detail

getWindow

public Window getWindow()

Suppressed: Returns the originator of the event.

Returns:

the Window object that originated the event

getOppositeWindow

public Window getOppositeWindow()

Suppressed: Returns the other Window involved in this focus or activation change. For a WINDOW_ACTIVATED or WINDOW_GAINED_FOCUS event, this is the Window that lost activation or focus. For a WINDOW_DEACTIVATED or WINDOW_LOST_FOCUS event, this is the Window that gained activation or focus. For any other type of WindowEvent, or if the focus or activation change occurs with a native application, with a Java application in a different VM or context, or with no other Window, null is returned.

Returns:

the other Window involved in the focus or activation change, or null

Since:

1.4

getOldState

public int getOldState()

Enabled: For WINDOW_STATE_CHANGED events returns the previous state of the window. The state is represented as a bitwise mask.

• NORMAL
  Indicates that no state bits are set.
• ICONIFIED
• MAXIMIZED_HORIZ
• MAXIMIZED_VERT
• MAXIMIZED_BOTH
  Concatenates MAXIMIZED_HORIZ and MAXIMIZED_VERT.

Returns:

a bitwise mask of the previous window state

Since:

1.4

See Also:

Frame#getExtendedState()

getNewState

public int getNewState()

Enabled: For WINDOW_STATE_CHANGED events returns the new state of the window. The state is represented as a bitwise mask.

• NORMAL
  Indicates that no state bits are set.
• ICONIFIED
• MAXIMIZED_HORIZ
• MAXIMIZED_VERT
• MAXIMIZED_BOTH
  Concatenates MAXIMIZED_HORIZ and MAXIMIZED_VERT.

Returns:

a bitwise mask of the new window state

Since:

1.4

See Also:

Frame#getExtendedState()

paramString

public String paramString()

Suppressed: Returns a parameter string identifying this event. This method is useful for event-logging and for debugging.

Overrides:

paramString in class ComponentEvent

Returns:

a string identifying the event and its attributes