Hi There is no way in GWT to distinguish between Refresh button click and Window close button click. But you can track refresh button with a little trick. You should use a time cookie which will expire after some time. So when refresh button is pressed, in on module load of entry point , track the value of this cokkie, if this cookie is still alive, this means refresh button is pressed. The time this cookie will expired should be considered. It should be very little.
Second for history, you should save your information in Session on window close and then if refresh button is pressed, get your information from this session. Thanks and regards Rohit On Mar 14, 2:30 am, "levi.bracken" <[email protected]> wrote: > You can restore state, but it's a bit more work than just using GWT > History. Basically you'll need to come up with some way of modifying > the url search parameter (stuff after the #) to include some info so > that you can bring the user back into the same state as they were > before. For example, if your application has a number of screens and > they were on screen foo, which was loading with properties for an item > with id 10 then you'd need that information in the Url. > > ex: http://yourApp.com/gwtHostPage.html#screen=foo_id=10 > > You could also put a conversation id in the url param and then keep > the fine details cached on the server, but that makes the state/data > more transient. If you go with an option like this though it can help > make your pages open and work in other tabs and even make points in > your application bookmark'able'. > > Now for the easy answer, yes you can just prevent the user from > carelessly clicking refresh. Fortunately there isn't a way to trap > somebody on a webpage (think about how bad the web would be). But, > you can use the WindowCloseListener to present a user with a > confirmation before they close the window, navigate to a new page, or > hit refresh. It'd look something like this (not tested): > > ///////////////////////// > Window.addWindowCloseListener( > new WindowCloseLisener(){ > > public String onWindowClosing(){ > return "Are you sure you want to leave this application?"; > } > > public void onWindowClosed(){ > // Cleanup if need be > }}); > > //////////////////////////////// > > On Mar 13, 2:52 pm, dodo <[email protected]> wrote: > > > > > GWT provides History.onHistoryChange event to handle history but how > > can we restore application state when a user clicks on Refresh button? > > For example the user performed multiple actions on the web site and > > then clicked refresh button. Now how using GWT History class we can > > restore the same state? > > > Another question, is there a way to trap "Refresh" click before > > actually the app refreshes and can be cancel the event? > > > Rajesh- Hide quoted text - > > - Show quoted text - --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~----------~----~----~----~------~----~------~--~---
