Closing a GWT DialogBox on 'Esc' keypress

Posted by zone817
0

To have a DialogBox do something on a keyboard event , its onPreviewNativeEvent should be overridden . A DialogBox can be made to hide itself on the 'Esc' key event by overriding it's OnPreviewNativeEvent method as follows

@Override
      protected void onPreviewNativeEvent(NativePreviewEvent event)
      {
         if (!event.isCanceled() && 
             event.getTypeInt() == Event.ONKEYDOWN && 
             event.getNativeEvent().getKeyCode() == KeyCodes.KEY_ESCAPE)
        {
             this.hide();
        }
       super.onPreviewNativeEvent(event);
     }

Read more »

0 comments:

Post a Comment

© Zone817. Powered by Blogger.