Window.ClosingHandler (GWT Javadoc)

All Superinterfaces:

EventHandler

All Known Implementing Classes:

BaseListenerWrapper.WrapWindowClose

Enclosing class:

Window
```
public static interface Window.ClosingHandler
extends EventHandler
```
Handler for Window.ClosingEvent events.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`onWindowClosing(Window.ClosingEvent event)`	Fired just before the browser window closes or navigates to a different site.

- Method Detail
  - onWindowClosing
```
void onWindowClosing(Window.ClosingEvent event)
```
    Fired just before the browser window closes or navigates to a different site. No user-interface may be displayed during shutdown.
    
    Parameters:
    
    event - the event