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Posted to users@wicket.apache.org by Sébastien Piller <pi...@hmcrecord.ch> on 2008/01/08 10:03:46 UTC
Javascript call to wicket
Hello guys,
I've a little question about the javascript and wicket. I need to update
some models on server side using javascript (in fact, I need to update
it from a flash object, and that's why I use js).
But I have no idea about how to do this... I know how to call a JS
function from flash, but I don't know how to update a wicket model using
a javascript/ajax call.
Has anybody some hint about that?
Thanks you
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Re: Javascript call to wicket
Posted by Erik van Oosten <e....@grons.nl>.
Hello Itay,
It was just an experiment. I have never actually used it. Its been a
long time ago too..
If may suggest, please try Firebug Lite to debug it.
Sorry I can't be of more help.
Regards,
Erik.
itayh wrote:
> Hi Erik,
>
> I used your solution and it works great for ff, while ie seem to have
> problems with it. Have you run it also in ie?
>
> Thanks,
> Itay
>
>
>
> Erik van Oosten wrote:
>
>> I just finished an experiment with something like that. Its still ugly
>> and very static, but here is my code.
>>
>> In the HTML header the function you can call from Flash:
>> function(someValue) {
>> var inputEl = document.getElementById('anchor8');
>> inputEl.value = someValue;
>> eval(inputEl.getAttribute('onclick'));
>> }
>>
>> Somewhere in the page:
>> <form wicket:id="ajaxForm" style="display: none;"><input
>> wicket:id="myField" type="hidden" value=""/></form>
>>
>> Note that 'anchor8', the Wicket generated id of the input element, still
>> needs te be made dynamic. Not sure how yet.
>>
>>
>> The code:
>> Form form = new Form("ajaxForm");
>> add(form);
>> final HiddenField myField = new HiddenField("myField", new
>> Model(), String.class);
>> form.add(myField);
>> myField.add(new AjaxFormSubmitBehavior("onclick") {
>> @Override
>> protected void onError(AjaxRequestTarget target) {
>> throw new RuntimeException("foutje"); // not sure what
>> to do here
>> }
>>
>> @Override
>> protected void onSubmit(AjaxRequestTarget target) {
>> String myValue = (String) myField.getConvertedInput();
>> processAjaxRequest(target, myValue);
>> }
>> });
>>
>> Improvements are very welcome.
>>
>> Regards,
>> Erik.
>>
>>
>>
>>
>
>
--
Erik van Oosten
http://www.day-to-day-stuff.blogspot.com/
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Re: Javascript call to wicket
Posted by itayh <it...@attractv.net>.
Hi Erik,
I used your solution and it works great for ff, while ie seem to have
problems with it. Have you run it also in ie?
Thanks,
Itay
Erik van Oosten wrote:
>
> I just finished an experiment with something like that. Its still ugly
> and very static, but here is my code.
>
> In the HTML header the function you can call from Flash:
> function(someValue) {
> var inputEl = document.getElementById('anchor8');
> inputEl.value = someValue;
> eval(inputEl.getAttribute('onclick'));
> }
>
> Somewhere in the page:
> <form wicket:id="ajaxForm" style="display: none;"><input
> wicket:id="myField" type="hidden" value=""/></form>
>
> Note that 'anchor8', the Wicket generated id of the input element, still
> needs te be made dynamic. Not sure how yet.
>
>
> The code:
> Form form = new Form("ajaxForm");
> add(form);
> final HiddenField myField = new HiddenField("myField", new
> Model(), String.class);
> form.add(myField);
> myField.add(new AjaxFormSubmitBehavior("onclick") {
> @Override
> protected void onError(AjaxRequestTarget target) {
> throw new RuntimeException("foutje"); // not sure what
> to do here
> }
>
> @Override
> protected void onSubmit(AjaxRequestTarget target) {
> String myValue = (String) myField.getConvertedInput();
> processAjaxRequest(target, myValue);
> }
> });
>
> Improvements are very welcome.
>
> Regards,
> Erik.
>
>
>
> Sébastien Piller wrote:
>> Hello guys,
>>
>> I've a little question about the javascript and wicket. I need to
>> update some models on server side using javascript (in fact, I need to
>> update it from a flash object, and that's why I use js).
>>
>> But I have no idea about how to do this... I know how to call a JS
>> function from flash, but I don't know how to update a wicket model
>> using a javascript/ajax call.
>>
>> Has anybody some hint about that?
>>
>> Thanks you
>>
>
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Re: Javascript call to wicket
Posted by Erik van Oosten <e....@grons.nl>.
I just finished an experiment with something like that. Its still ugly
and very static, but here is my code.
In the HTML header the function you can call from Flash:
function(someValue) {
var inputEl = document.getElementById('anchor8');
inputEl.value = someValue;
eval(inputEl.getAttribute('onclick'));
}
Somewhere in the page:
<form wicket:id="ajaxForm" style="display: none;"><input
wicket:id="myField" type="hidden" value=""/></form>
Note that 'anchor8', the Wicket generated id of the input element, still
needs te be made dynamic. Not sure how yet.
The code:
Form form = new Form("ajaxForm");
add(form);
final HiddenField myField = new HiddenField("myField", new
Model(), String.class);
form.add(myField);
myField.add(new AjaxFormSubmitBehavior("onclick") {
@Override
protected void onError(AjaxRequestTarget target) {
throw new RuntimeException("foutje"); // not sure what
to do here
}
@Override
protected void onSubmit(AjaxRequestTarget target) {
String myValue = (String) myField.getConvertedInput();
processAjaxRequest(target, myValue);
}
});
Improvements are very welcome.
Regards,
Erik.
Sébastien Piller wrote:
> Hello guys,
>
> I've a little question about the javascript and wicket. I need to
> update some models on server side using javascript (in fact, I need to
> update it from a flash object, and that's why I use js).
>
> But I have no idea about how to do this... I know how to call a JS
> function from flash, but I don't know how to update a wicket model
> using a javascript/ajax call.
>
> Has anybody some hint about that?
>
> Thanks you
>
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Re: Javascript call to wicket
Posted by jweekend <jw...@cabouge.com>.
This is an interesting and useful thread and goes over ground not too well
covered elsewhere, afaics.
Would it be worthwhile to get an authoritatively edited version up on the
Wiki, maybe in the reference section?
Regards - Cemal
http://jWeekend.co.uk http://jWeekend.co.uk
Pills wrote:
>
> Hello guys,
>
> I've a little question about the javascript and wicket. I need to update
> some models on server side using javascript (in fact, I need to update
> it from a flash object, and that's why I use js).
>
> But I have no idea about how to do this... I know how to call a JS
> function from flash, but I don't know how to update a wicket model using
> a javascript/ajax call.
>
> Has anybody some hint about that?
>
> Thanks you
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> For additional commands, e-mail: users-help@wicket.apache.org
>
>
>
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Re: Javascript call to wicket
Posted by Nino Saturnino Martinez Vazquez Wael <ni...@jayway.dk>.
Hi Michael
Why not just have a page with a hidden form, then fill the values via
javascript and submit the form again via javascript?
-Nino
Michael Sparer wrote:
> The parameters you defined in JS are regular HTTP GET parameters, so, as I
> wrote earlier, you can get them out of the request. You can do that like so:
> Map map =
> ((WebRequestCycle)RequestCycle.get()).getRequest().getParameterMap();
> Maybe there's also an easier way but I'm not really into wicket's
> requestcycle ...
>
>
>
> Pills wrote:
>
>> Thank you, I choosed your first and pretty solution, and it works fine.
>>
>> But how to get the parameters in the java code? I see nothing in the class
>> AjaxRequestTarget that may return the parameters of the request?
>>
>>
>> Michael Sparer wrote:
>>
>>> hi,
>>>
>>> - your component has to implement IHeaderContributor, that's where the
>>> response-object gets passed
>>> - you add the abstractdefaultajaxbehavior to the component you'd like to
>>> call from javascript. you then have to override the respond method of
>>> AbstractDefaultAjaxBehavior to perform your actions and to append your
>>> changes to the response
>>>
>>>
>>
>
>
> -----
> Michael Sparer
> http://talk-on-tech.blogspot.com
>
--
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Java Specialist @ Jayway DK
http://www.jayway.dk
+45 2936 7684
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Re: Javascript call to wicket
Posted by Pills <pi...@hmcrecord.ch>.
Thanks, it's short and precise. I have nothing more to say about this ;)
Erik van Oosten-3 wrote:
>
> I did not find the results of this thread on the Wiki yet, so I created
> the following page:
> http://cwiki.apache.org/confluence/display/WICKET/Calling+Wicket+from+Javascript
>
> Comments and edits are appreciated. There is a TODO on the page for
> providing an example that adds Javascript to the header. Or perhaps this
> should be on another page under AJAX?
>
> Thanks for sharing the information!
>
> Regards,
> Erik.
>
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Re: Javascript call to wicket
Posted by Erik van Oosten <er...@grons.nl>.
I did not find the results of this thread on the Wiki yet, so I created
the following page:
http://cwiki.apache.org/confluence/display/WICKET/Calling+Wicket+from+Javascript
Comments and edits are appreciated. There is a TODO on the page for
providing an example that adds Javascript to the header. Or perhaps this
should be on another page under AJAX?
Thanks for sharing the information!
Regards,
Erik.
Gwyn Evans wrote:
> As Cemel suggested, if you have time to put a summary up on the Wiki,
> it would be appreciated!
>
> /Gwyn
>
>
>
>
>
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Re: Javascript call to wicket
Posted by Pills <pi...@hmcrecord.ch>.
Ok, I'll write it maybe tomorrow or this week end (I'm quite busy but I can
take an hour or two to write it).
Michael Sparer wrote:
>
> I'm also no native speaker but I'll certainly read through it and write
> some enhancements (if necessary) once it's in the wiki
>
> regards, Michael
>
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Re: Javascript call to wicket
Posted by Michael Sparer <mi...@gmx.at>.
I'm also no native speaker but I'll certainly read through it and write some
enhancements (if necessary) once it's in the wiki
regards, Michael
jweekend wrote:
>
> We can probably take a look and I am sure others will help once its up on
> the wiki.
> These may be useful references too:
> http://www.nabble.com/integrating-extjs-with-wicket-to14715123.html here
> and
> http://www.nabble.com/calling-javascript-function-on-wicket-component%27s-onclick-to14730927.html
> here
> Regards - Cemal
> http://jWeekend.co.uk http://jWeekend.co.uk
>
>
>
> Pills wrote:
>>
>>
>> Yes, I'd like to do it, but as english is not my mother language, I
>> need somebody to correct it after I write it.
>>
>> Who wants to do that? ;)
>>
>> Gwyn Evans a écrit :
>>
>> As Cemel suggested, if you have time to put a summary up on the Wiki,
>> it would be appreciated!
>>
>>
>>
>>
>>
>>
>> ---------------------------------------------------------------------
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>>
>>
>>
>
>
-----
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Re: Javascript call to wicket
Posted by jweekend <jw...@cabouge.com>.
We can probably take a look and I am sure others will help once its up on the
wiki.
These may be useful references too:
http://www.nabble.com/integrating-extjs-with-wicket-to14715123.html here
and
http://www.nabble.com/calling-javascript-function-on-wicket-component%27s-onclick-to14730927.html
here
Regards - Cemal
http://jWeekend.co.uk http://jWeekend.co.uk
Pills wrote:
>
>
> Yes, I'd like to do it, but as english is not my mother language, I
> need somebody to correct it after I write it.
>
> Who wants to do that? ;)
>
> Gwyn Evans a écrit :
>
> As Cemel suggested, if you have time to put a summary up on the Wiki,
> it would be appreciated!
>
>
>
>
>
>
> ---------------------------------------------------------------------
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> For additional commands, e-mail: users-help@wicket.apache.org
>
>
>
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Re: Javascript call to wicket
Posted by Gwyn Evans <gw...@gmail.com>.
As Cemel suggested, if you have time to put a summary up on the Wiki,
it would be appreciated!
/Gwyn
On 09/01/2008, Pills <pi...@hmcrecord.ch> wrote:
>
> Thank you, now everything works fine, and it's clean ;)
>
>
>
> Michael Sparer wrote:
> >
> > You can do that like so: Map map =
> > ((WebRequestCycle)RequestCycle.get()).getRequest().getParameterMap();
> > Maybe there's also an easier way but I'm not really into wicket's
> > requestcycle ...
> >
>
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Re: Javascript call to wicket
Posted by Pills <pi...@hmcrecord.ch>.
Thank you, now everything works fine, and it's clean ;)
Michael Sparer wrote:
>
> You can do that like so: Map map =
> ((WebRequestCycle)RequestCycle.get()).getRequest().getParameterMap();
> Maybe there's also an easier way but I'm not really into wicket's
> requestcycle ...
>
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Re: Javascript call to wicket
Posted by Michael Sparer <mi...@gmx.at>.
The parameters you defined in JS are regular HTTP GET parameters, so, as I
wrote earlier, you can get them out of the request. You can do that like so:
Map map =
((WebRequestCycle)RequestCycle.get()).getRequest().getParameterMap();
Maybe there's also an easier way but I'm not really into wicket's
requestcycle ...
Pills wrote:
>
> Thank you, I choosed your first and pretty solution, and it works fine.
>
> But how to get the parameters in the java code? I see nothing in the class
> AjaxRequestTarget that may return the parameters of the request?
>
>
> Michael Sparer wrote:
>>
>> hi,
>>
>> - your component has to implement IHeaderContributor, that's where the
>> response-object gets passed
>> - you add the abstractdefaultajaxbehavior to the component you'd like to
>> call from javascript. you then have to override the respond method of
>> AbstractDefaultAjaxBehavior to perform your actions and to append your
>> changes to the response
>>
>
>
-----
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http://talk-on-tech.blogspot.com
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Re: Javascript call to wicket
Posted by Pills <pi...@hmcrecord.ch>.
Thank you, I choosed your first and pretty solution, and it works fine.
But how to get the parameters in the java code? I see nothing in the class
AjaxRequestTarget that may return the parameters of the request?
Michael Sparer wrote:
>
> hi,
>
> - your component has to implement IHeaderContributor, that's where the
> response-object gets passed
> - you add the abstractdefaultajaxbehavior to the component you'd like to
> call from javascript. you then have to override the respond method of
> AbstractDefaultAjaxBehavior to perform your actions and to append your
> changes to the response
>
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Re: Javascript call to wicket
Posted by Michael Sparer <mi...@gmx.at>.
hi erik,
actually the example in my first post already calls the behaviour:
function callWicket() {
var wcall = wicketAjaxGet('${url}' + addToUrl, function() { }, function()
{ }); // addToUrl are optional parameters
}
the addToUrl variable above may look like that '&foo=bar' - so you can get
the get parameters out of the request. It actually _is_ quite ugly, but you
get them like so: Map map =
((WebRequestCycle)RequestCycle.get()).getRequest().getParameterMap();
Maybe there's also an easier way but I'm not really into wicket's
requestcycle ...
I saw this approach (JS-template + AbstractDefaultAjaxBehavior) in the
wicketstuff-push project that was done by Xavier Hanin and Vincent Demant.
If you want to see it in production check it out from SVN and take a look at
the org.wicketstuff.push.cometd package. There's a JS-template and the class
that uses it (CometdBehavior).
regards,
Michael
Erik van Oosten-3 wrote:
>
> Nice to see a more structured approach.
>
> Do you have a small JavaScript example that shows how to call the
> behavior URL?
>
> Can you also explain (or reference docs/examples) how to pass parameters
> from javascript to the behavior?
>
> Regards,
> Erik.
>
>
> Michael Sparer wrote:
>> hi,
>>
>> - your component has to implement IHeaderContributor, that's where the
>> response-object gets passed.....
>
>
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>
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Re: Javascript call to wicket
Posted by Erik van Oosten <er...@grons.nl>.
Nice to see a more structured approach.
Do you have a small JavaScript example that shows how to call the
behavior URL?
Can you also explain (or reference docs/examples) how to pass parameters
from javascript to the behavior?
Regards,
Erik.
Michael Sparer wrote:
> hi,
>
> - your component has to implement IHeaderContributor, that's where the response-object gets passed.....
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Re: Javascript call to wicket
Posted by Michael Sparer <mi...@gmx.at>.
hi,
- your component has to implement IHeaderContributor, that's where the
response-object gets passed
- you add the abstractdefaultajaxbehavior to the component you'd like to
call from javascript. you then have to override the respond method of
AbstractDefaultAjaxBehavior to perform your actions and to append your
changes to the response
e.g. in your panel
final AbstractDefaultAjaxBehavior behave = new AbstractDefaultAjaxBehavior()
{
protected void respond(final AjaxRequestTarget target) {
target.add(new Label("foo", "yeah I just called this from flash!"));
}
};
add(behave);
the method behave.getCallbackUrl(); gives you the url to call that respond
method. I.e. if you paste the String returned from that method into your
browser, you'll invoke the respond method, the same applies for the
javascript method
- Dojopackagedtexttemplate is part of the wicketstuff dojo project, don't
know if you need more than that class or if it's possible without the
project. we used that as part of the wicketstuff-push project ... add this
to your pom:
<dependency>
<groupId>org.wicketstuff</groupId>
<artifactId>wicketstuff-dojo</artifactId>
<version>1.3.0-SNAPSHOT</version>
</dependency>
Michael
Pills wrote:
>
>
> Michael Sparer wrote:
>>
>> Generally you can get the callback-url of a wicket ajax-component with
>> calling getCallbackUrl(), you should have a look at wicketAjaxGet which
>> is part of wicket's JS library
>>
>>
>> to make the whole stuff a bit more dynamic you could make a javascript
>> template using wicketstuff-dojo, e.g.
>>
>> function callWicket() {
>> var wcall = wicketAjaxGet('${url}' + addToUrl, function() { },
>> function() { }); // addToUrl are optional parameters
>> }
>>
>> and then in the java-code
>> HashMap<String, String> map = new HashMap<String, String>();
>> map.put("url", getCallbackUrl().toString()); // getcallbackurl is from
>> AbstractAjaxBehavior
>> return new DojoPackagedTextTemplate(YourClass.class,
>> "CometdDefaultBehaviorTemplate.js")
>> .asString(map);
>>
>> and then add it in your responseheader (renderHead method) with
>> response.renderJavaScript(...)
>>
>> this may be not the easiest method but allows the most flexibility.
>>
>> hope that helps
>>
>> Michael
>>
>
> Hello Michael,
>
> thank you for your answer.
>
> I have two little problems with this way:
> - how can I get an instance of ResponseHeader from a WebPage?
> - I need to use an AbstractAjaxBehavior, but where do I need to add it?
> Simply on the page? Or on my ShockwaveComponent?
>
>
> Thank you ;)
>
> EDIT: And I find no class named "DojoPackagedTextTemplate"... is it
> included in a wicket's subproject?
>
-----
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Re: Javascript call to wicket
Posted by Pills <pi...@hmcrecord.ch>.
Michael Sparer wrote:
>
> Generally you can get the callback-url of a wicket ajax-component with
> calling getCallbackUrl(), you should have a look at wicketAjaxGet which is
> part of wicket's JS library
>
>
> to make the whole stuff a bit more dynamic you could make a javascript
> template using wicketstuff-dojo, e.g.
>
> function callWicket() {
> var wcall = wicketAjaxGet('${url}' + addToUrl, function() { },
> function() { }); // addToUrl are optional parameters
> }
>
> and then in the java-code
> HashMap<String, String> map = new HashMap<String, String>();
> map.put("url", getCallbackUrl().toString()); // getcallbackurl is from
> AbstractAjaxBehavior
> return new DojoPackagedTextTemplate(YourClass.class,
> "CometdDefaultBehaviorTemplate.js")
> .asString(map);
>
> and then add it in your responseheader (renderHead method) with
> response.renderJavaScript(...)
>
> this may be not the easiest method but allows the most flexibility.
>
> hope that helps
>
> Michael
>
Hello Michael,
thank you for your answer.
I have two little problems with this way:
- how can I get an instance of ResponseHeader from a WebPage?
- I need to use an AbstractAjaxBehavior, but where do I need to add it?
Simply on the page? Or on my ShockwaveComponent?
Thank you ;)
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Re: Javascript call to wicket
Posted by Michael Sparer <mi...@gmx.at>.
Generally you can get the callback-url of a wicket ajax-component with
calling getCallbackUrl(), you should have a look at wicketAjaxGet which is
part of wicket's JS library
to make the whole stuff a bit more dynamic you could make a javascript
template using wicketstuff-dojo, e.g.
function callWicket() {
var wcall = wicketAjaxGet('${url}' + addToUrl, function() { }, function()
{ }); // addToUrl are optional parameters
}
and then in the java-code
HashMap<String, String> map = new HashMap<String, String>();
map.put("url", getCallbackUrl().toString()); // getcallbackurl is from
AbstractAjaxBehavior
return new DojoPackagedTextTemplate(YourClass.class,
"CometdDefaultBehaviorTemplate.js")
.asString(map);
and then add it in your responseheader (renderHead method) with
response.renderJavaScript(...)
this may be not the easiest method but allows the most flexibility.
hope that helps
Michael
Pills wrote:
>
> Hello guys,
>
> I've a little question about the javascript and wicket. I need to update
> some models on server side using javascript (in fact, I need to update
> it from a flash object, and that's why I use js).
>
> But I have no idea about how to do this... I know how to call a JS
> function from flash, but I don't know how to update a wicket model using
> a javascript/ajax call.
>
> Has anybody some hint about that?
>
> Thanks you
>
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>
>
-----
Michael Sparer
http://talk-on-tech.blogspot.com
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