Igor, I had a feeling that was the situation. I'll take a closer look at my code with that in mind and if I can come up with a clear follow up question, I'll post some relevant excerpts.
Thanks very much for your help, James. Igor Vaynberg wrote: > the short answer is: you cant do that. javascript is asynchronous, so > the request will start _and_ your function will continue running. > usually what is done is that you create a request object, and then > register success and failure handlers that are executed after the > request is done. > > you can do that using iajaxcalldecorator, or what you tried...calling > ajaxtarget.appendjavascript() should work as well. > > if you show us some more code/try to describe your actual usecase we > can probably help you more, right now its all very abstract. > > -igor > > > On 5/3/07, *James Renfro* <[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>> wrote: > > Hi, > I'd like to do something slightly unusual and wrap the > wicketSubmitFormById call in another javascript function -- I'm > able to > do this with no problem by overriding > AjaxFormSubmitBehavor.onRenderHeadInitContribution and calling > JavascriptUtils.writeJavascript on a wrapped getEventHandler. I > can stop > the normal attribute for 'onclick' or whatever from appearing > inside the > component tag by overriding onComponentTag. And by using text input > boxes, I can pass 'arguments' to my method on the server inside using > FormComponent.getConvertedInput. So far so good. > > The problem I have is that I'd like to actually 'return' a value back > from the server in that Javascript function... so my function ends up > looking just like a normal function call inside of my Javascript and > returns the value that the server provides. > > I can see inside of wicket-ajax.js that there are three special tags: > "component", "evaluate" and "header-contribution", each with their > appropriate purpose -- I tried messing around with > AjaxRequestTarget.prependJavascript so I could pass something through > the 'evaluate' tag, but my javascript isn't sufficient to the > task. Then > I tried using AjaxRequestTarget.addComponent to modify another > TextField > and return the value through the DOM tree -- that works fine > except for > the fact that the order is wrong, so my method returns _before_ the > component is updated. > > Then I noticed this interesting Wicket.Ajax.invokePostCallHandlers() > call, which makes me wonder if there is already some nice clean > mechanism in place for updating javascript variables thru wicket's > java > code. > > Apologies if this all makes no sense, but any advice or suggestions > would be much appreciated. The basic requirement is just that I > make a > call in Javascript and get data back from the server as a 'returned' > variable on the client. > > Thanks, > James > > -- > James Renfro > Programmer > IET Mediaworks, UC Davis > [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> > W: 530-754-5097 > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by DB2 Express > Download DB2 Express C - the FREE version of DB2 express and take > control of your XML. No limits. Just data. Click to get it now. > http://sourceforge.net/powerbar/db2/ > _______________________________________________ > Wicket-user mailing list > Wicket-user@lists.sourceforge.net > <mailto:Wicket-user@lists.sourceforge.net> > https://lists.sourceforge.net/lists/listinfo/wicket-user > > > ------------------------------------------------------------------------ > > ------------------------------------------------------------------------- > This SF.net email is sponsored by DB2 Express > Download DB2 Express C - the FREE version of DB2 express and take > control of your XML. No limits. Just data. Click to get it now. > http://sourceforge.net/powerbar/db2/ > ------------------------------------------------------------------------ > > _______________________________________________ > Wicket-user mailing list > Wicket-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/wicket-user > -- James Renfro Programmer IET Mediaworks, UC Davis [EMAIL PROTECTED] W: 530-754-5097 ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Wicket-user mailing list Wicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user
