AFAIK the browser won't issue a new server call (or will not process the
response) once the onunload event has been called so I doubt this will work
(using the web inspector of your browser will allow you to check whether or
not the call has been done)
I second what Martin said, you need to add the JavaScript code to call the
server.
Le 11 nov. 2013 15:29, "Martin Grigorov" <mgrigo...@apache.org> a écrit :
> respond() is the callback method that Wicket will notify.
> But you need to trigger an Ajax call first. This is done with the Wicket
> Ajax API: Wicket.Ajax.get(...).
>
> Just try with the line I've added in your JS code
>
>
> On Mon, Nov 11, 2013 at 4:04 PM, Daniela L <danigal...@gmail.com> wrote:
>
> > I thought adding respond was the ajax call to the server, am I wrong?
> > I didn't work much with ajax, i am sorry
> >
> >
> > 2013/11/11 Martin Grigorov <mgrigo...@apache.org>
> >
> > > Did you do what I suggested you ?
> > >
> > >
> > > On Mon, Nov 11, 2013 at 3:49 PM, Daniela L <danigal...@gmail.com>
> wrote:
> > >
> > > > Hi,
> > > >
> > > > I have tryed to change to AbstractDefaultAjaxBehavior like I
> described
> > > > below, but respond is never called. What am I doing wrong?
> > > >
> > > >
> > > > Hi,
> > > >
> > > > as far as I have understood this can only be achieved, if I subclass
> > > > AbstractDefaultAjaxBehavior like this?
> > > >
> > > > public class PageExitWarningBehavior extends
> > AbstractDefaultAjaxBehavior
> > > {
> > > > @Override
> > > > protected void respond(AjaxRequestTarget target) {
> > > >
> > > > AppointmentSession.get().releaseSavedBlockedFreeCalendarEvent();
> > > > }
> > > >
> > > >
> > > > Hi,
> > > >
> > > > You need to make an Ajax call to the server.
> > > >
> > > >
> > > > On Mon, Nov 11, 2013 at 2:10 PM, Daniela L <danigal...@gmail.com>
> > > > <danigal...@gmail.com><danigal...@gmail.com> <danigal...@gmail.com>
> > > > wrote:
> > > >
> > > >
> > > > Hi,
> > > > this is my first question, so i hope I get everything right.
> > > >
> > > > I am trying to catch the event of the user closing the browser window
> > in
> > > > wicket.
> > > >
> > > > I followed this example:
> > > >
> > > >
> > >
> >
> http://stackoverflow.com/questions/16527463/call-java-component-from-javascript-and-retreive-value
> > > >
> > > > and I managed to get the example working so the message is displayed,
> > > but I
> > > > have no idea how to get the event triggered by the javascript
> function
> > in
> > > > wicket. I need this because when the user closes the browser window I
> > > want
> > > > to update some data in my database.
> > > > Here is what I have tryed:
> > > >
> > > >
> > > > RequiredTextField<String> myTextField = new
> > > > RequiredTextField<String>("myTextField");
> > > > myTextField.setOutputMarkupPlaceholderTag(true);
> > > > myTextField.add(new PageExitWarningBehavior(){
> > > > @Override
> > > > public void onEvent(Component component, IEvent<?> event)
> > > > {
> > > > //this isn't ever called
> > > > MySession.get().releaseBlockedDataFromDatabase();
> > > > }
> > > > });
> > > >
> > > > public class PageExitWarningBehavior extends Behavior {
> > > > @Override
> > > > public void renderHead(Component component, IHeaderResponse
> > > > response) {
> > > > super.renderHead(component, response);
> > > > response.render(new
> > > > OnDomReadyHeaderItem("window.onbeforeunload = function (e) {"
> > > >
> > > >
> > > > + "Wicket.Ajax.get({u: '"+getCallbackUrl()+"',
> > > async:
> > > > false});"
> > > >
> > > >
> > > > + "var message = 'Your confirmation message goes
> > > > here.',"
> > > >
> > > > + "e = e || window.event;" + "if (e) {"
> > > >
> > > > + "e.returnValue = message;" + "}" + "return
> > message;"
> > > +
> > > > "};"));
> > > > }
> > > > }
> > > >
> > > > What am I missing? Thank you very much in advance
> > > >
> > >
> >
>
