I have a html widget which have some logic that should happen when the  widget is re-sized. This widget could be placed in a splitter  pane or could be place alone. It doesn't care what it's container is so I need the splitter to trigger window resize and so the widget will be notified. At least I want to have an value in the spleiter resize event which tells me if the splitter resize was triggered by window resize or user dragging it.