WindowCloseListener (GWT Javadoc)

All Superinterfaces:

java.util.EventListener
```
@Deprecated
public interface WindowCloseListener
extends java.util.EventListener
```
Deprecated.
use Window.ClosingHandler and CloseHandler instead

Implement this interface to receive closing events from the browser window.

See Also:

Window.addWindowCloseListener(WindowCloseListener)

- Method Summary
  
  All Methods Instance Methods Abstract Methods Deprecated Methods
  Modifier and Type Method Description
  
  void onWindowClosed()
  Deprecated.
  
  java.lang.String onWindowClosing()
  Deprecated.

- Method Detail
  - onWindowClosing
```
@Deprecated
java.lang.String onWindowClosing()
```
    Deprecated.
    
    Fired just before the browser window closes or navigates to a different site. No user-interface may be displayed during shutdown.
    
    Returns:
    
    non-null to present a confirmation dialog that asks the user whether or not she wishes to navigate away from the page. The string returned will be displayed in the close confirmation dialog box. If multiple listeners return messages, the first will be displayed; all others will be ignored.
  - onWindowClosed
```
@Deprecated
void onWindowClosed()
```
    Deprecated.
    
    Fired after the browser window closes or navigates to a different site. This event cannot be canceled, and is used mainly to clean up application state and/or save state to the server.