Browser tab close detect in gwt

Question

I am developing a gwt application and I am going to support only for ie7. Now I have a requirement to detect browser tab close event.I have tried Window.addWindowClosingHandler(...) . But this is getting fired when we click any url in the page or refresh. I just want to detect only browser close event. I dont want to capture any other event like browser refresh, url click. Is there any way to detect only that.

Answer 1

it should work

Window.addCloseHandler(new CloseHandler<Window>() {

        @Override
        public void onClose(CloseEvent<Window> event) {
            Window.alert("bye bye beautiful");

        }
    });

[EDIT]
or maybe you search onBrowserEvent(); and detect which event user do

public void onBrowserEvent(Event event)
    {
        switch (DOM.eventGetType(event))
        Event.onClick
        Event.onPaste
        Event.onLoad

Answer 2

您可以使用会话cookie，如在此问题的选定答案中所述： 也可以在浏览器刷新时触发GWT WindowClosingHandler

Answer 3

JavaScript doesn't expose what caused the page to get closed, so GWT unfortunately cannot expose this information.

The underlying JavaScript event is the onbeforeunload event.