Class WindowAdapter

java.lang.Object
- java.awt.event.WindowAdapter

All Implemented Interfaces:: WindowFocusListener, WindowListener, WindowStateListener, EventListener

Direct Known Subclasses:: BasicToolBarUI.FrameListener, JMenu.WinListener

public abstract class WindowAdapter
extends Object
implements WindowListener, WindowStateListener, WindowFocusListener

An abstract adapter class for receiving window events. The methods in this class are empty. This class exists as convenience for creating listener objects.

Extend this class to create a WindowEvent listener and override the methods for the events of interest. (If you implement the WindowListener interface, you have to define all of the methods in it. This abstract class defines null methods for them all, so you can only have to define methods for events you care about.)

Create a listener object using the extended class and then register it with a Window using the window's addWindowListener method. When the window's status changes by virtue of being opened, closed, activated or deactivated, iconified or deiconified, the relevant method in the listener object is invoked, and the WindowEvent is passed to it.

Since:: 1.1
See Also:: WindowEvent, WindowListener, Tutorial: Writing a Window Listener

Constructor Summary

Constructors
Constructor	Description
`WindowAdapter()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`windowActivated(WindowEvent e)`	Invoked when a window is activated.
`void`	`windowClosed(WindowEvent e)`	Invoked when a window has been closed.
`void`	`windowClosing(WindowEvent e)`	Invoked when a window is in the process of being closed.
`void`	`windowDeactivated(WindowEvent e)`	Invoked when a window is de-activated.
`void`	`windowDeiconified(WindowEvent e)`	Invoked when a window is de-iconified.
`void`	`windowGainedFocus(WindowEvent e)`	Invoked when the Window is set to be the focused Window, which means that the Window, or one of its subcomponents, will receive keyboard events.
`void`	`windowIconified(WindowEvent e)`	Invoked when a window is iconified.
`void`	`windowLostFocus(WindowEvent e)`	Invoked when the Window is no longer the focused Window, which means that keyboard events will no longer be delivered to the Window or any of its subcomponents.
`void`	`windowOpened(WindowEvent e)`	Invoked when a window has been opened.
`void`	`windowStateChanged(WindowEvent e)`	Invoked when a window state is changed.

Methods declared in class java.lang.Object

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

Constructor Detail

WindowAdapter

public WindowAdapter()

Method Detail

windowOpened

public void windowOpened(WindowEvent e)

Invoked when a window has been opened.

Specified by:: windowOpened in interface WindowListener
Parameters:: e - the event to be processed

windowClosing

public void windowClosing(WindowEvent e)

Invoked when a window is in the process of being closed. The close operation can be overridden at this point.

Specified by:: windowClosing in interface WindowListener
Parameters:: e - the event to be processed

windowClosed

public void windowClosed(WindowEvent e)

Invoked when a window has been closed.

Specified by:: windowClosed in interface WindowListener
Parameters:: e - the event to be processed

windowIconified

public void windowIconified(WindowEvent e)

Invoked when a window is iconified.

Specified by:: windowIconified in interface WindowListener
Parameters:: e - the event to be processed
See Also:: Window.setIconImage(java.awt.Image)

windowDeiconified

public void windowDeiconified(WindowEvent e)

Invoked when a window is de-iconified.

Specified by:: windowDeiconified in interface WindowListener
Parameters:: e - the event to be processed

windowActivated

public void windowActivated(WindowEvent e)

Invoked when a window is activated.

Specified by:: windowActivated in interface WindowListener
Parameters:: e - the event to be processed

windowDeactivated

public void windowDeactivated(WindowEvent e)

Invoked when a window is de-activated.

Specified by:: windowDeactivated in interface WindowListener
Parameters:: e - the event to be processed

windowStateChanged

public void windowStateChanged(WindowEvent e)

Invoked when a window state is changed.

Specified by:: windowStateChanged in interface WindowStateListener
Parameters:: e - the event to be processed
Since:: 1.4

windowGainedFocus

public void windowGainedFocus(WindowEvent e)

Invoked when the Window is set to be the focused Window, which means that the Window, or one of its subcomponents, will receive keyboard events.

Specified by:: windowGainedFocus in interface WindowFocusListener
Parameters:: e - the event to be processed
Since:: 1.4

windowLostFocus

public void windowLostFocus(WindowEvent e)

Invoked when the Window is no longer the focused Window, which means that keyboard events will no longer be delivered to the Window or any of its subcomponents.

Specified by:: windowLostFocus in interface WindowFocusListener
Parameters:: e - the event to be processed
Since:: 1.4