How do I pass back data from HTML (javascript) to my Java code

[solled <so...@msn.com>]

Hi,

How do I get data generated by javascript functions to my Java code using
Wicket. For example, I have the following javascript code:

<script type="text/javascript">
 
    var map;
    var gdir;
    var geocoder = null;
    var addressMarker;
    var mileage;
	
    function initialize() {
      if (GBrowserIsCompatible()) {      
        map = new GMap2(document.getElementById("map_canvas"));
        gdir = new GDirections(map, document.getElementById("directions"));
        GEvent.addListener(gdir, "load", onGDirectionsLoad);
        GEvent.addListener(gdir, "error", handleErrors);

        setDirections("", "", "en_US");
	
	  onGDirectionsLoad();
      }
    }
    
    function setDirections(fromAddress, toAddress, locale) {
      gdir.load("from: " + fromAddress + " to: " + toAddress,
                { "locale": locale });
    }

	function onGDirectionsLoad(){ 
      // Use this function to access information about the latest load()
      // results.

	document.getElementById("getDistance").innerHTML = gdir.getDistance().html; 

	}
    </script>



How do I pass the getDistance value in function onGDirectionsLoad() to my
java code?

thanks for any help.

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Re: How do I pass back data from HTML (javascript) to my Java code

[richardwilko <ri...@gmail.com>]

You could create an abstractDefaultAjaxBehaviour in your page, then do an
ajax get onto it, appending your parameter as a url parameter, then get your
parameter from the request in java.  or you could have a wicket page, and do
an ajax get on that, appending your parameter as a url parameter, and get
your parameter from the page parameters.

Admittedly both ways seem a little hacky but i cant think of another way.


My presentation on google maps from the london wicket user group may be
helpful, as may the one about a gallery (not mine):
http://code.google.com/p/londonwicket/downloads/list

hope that helps




solled wrote:
> 
> Hi,
> 
> How do I get data generated by javascript functions to my Java code using
> Wicket. For example, I have the following javascript code:
> 
> <script type="text/javascript">
>  
>     var map;
>     var gdir;
>     var geocoder = null;
>     var addressMarker;
>     var mileage;
> 	
>     function initialize() {
>       if (GBrowserIsCompatible()) {      
>         map = new GMap2(document.getElementById("map_canvas"));
>         gdir = new GDirections(map,
> document.getElementById("directions"));
>         GEvent.addListener(gdir, "load", onGDirectionsLoad);
>         GEvent.addListener(gdir, "error", handleErrors);
> 
>         setDirections("", "", "en_US");
> 	
> 	  onGDirectionsLoad();
>       }
>     }
>     
>     function setDirections(fromAddress, toAddress, locale) {
>       gdir.load("from: " + fromAddress + " to: " + toAddress,
>                 { "locale": locale });
>     }
> 
> 	function onGDirectionsLoad(){ 
>       // Use this function to access information about the latest load()
>       // results.
> 
> 	document.getElementById("getDistance").innerHTML =
> gdir.getDistance().html; 
> 
> 	}
>     </script>
> 
> 
> 
> How do I pass the getDistance value in function onGDirectionsLoad() to my
> java code?
> 
> thanks for any help.
> 
> 

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