答复: T5: Select component + onchange()

[滕训华 <te...@magic-sw.com.cn>]

Hi,Sven:
	I use your example code in my project,but when I return Chinese to
javascript function and use alert to display it.it can not display normally,
how can I slove this problem,thanks.

My code:

	TextStreamResponse onChange(TblCustomerInfo changedCustomer){
    	String utfStr="";
    	try{
    		utfStr=new String("滕训华".getBytes(),"UTF-8");
    	}
    	catch(UnsupportedEncodingException e){
    	
    	}
    	return new  TextStreamResponse("text/html",utfStr);
    	
    }

My javascript code:
	
		function customerChangeEvent(response){
			
			alert(response);
			
		}
-----邮件原件-----
发件人: Sven Homburg [mailto:homburgs@googlemail.com] 
发送时间: 2008年4月25日 2:54
收件人: Tapestry users
主题: Re: T5: Select component + onchange()

here some sample code sequences

your page class (simplified):

@Component(parameters={"event=change"
"onCompleteCallback=onSelect1Changed"})
@Mixins("t5components/OnEvent")
private Select _select1

@Component
private Select _select2

@OnEvent(component = "select1", value = "change")
JSONObject select1ElementChanged(String value)
{
JSONObject json = new JSONObject();
json.put("result", new JSONArray("[['a', 'value a'], ['b', 'value b'], ['c',
'value c'], ['d', 'value d']]"));
return json;
}


your page tml (simplified):

<select t:id="select1">
<option value="1">first value</option>
</select>

<select t:id="select2">
</select>

<script type="text/javascript">
function onSelect1Changed(response)
{
var json = response.evalJSON();
var array = $A(json.result)

array.each(function(item){

// create new option for select tag "select2" and fill value attribute with
"item[0]"
// and fill option.innerText with "item[1]"

})
}
</script>



2008/4/24, Marcelo Lotif <ml...@gmail.com>:
>
> Yeah, i know this, but none of these responses suit to my needs (maybe a
> Page response, but this will force a reload)... i tried to return a block
> with the part of the code that i was trying to change, but i had no
success
>
> And i don't have the enough knowledge of the JSON api and javascript...
>
> So i'm using the onchange='this.form.submit()'...
>
> =)
>
>
> 2008/4/24 Sven Homburg <ho...@googlemail.com>:
>
> > the JSONObject/JSONArray response too
> >
> > 2008/4/24, Sven Homburg <ho...@googlemail.com>:
> > >
> > > the return type is not limited to StreamResponse.
> > > all you can respond all that tapestry allowes here
> > > http://tapestry.apache.org/tapestry5/tapestry-core/guide/pagenav.html
> > > its up to you
> > >
> > > 2008/4/24, Marcelo Lotif <ml...@gmail.com>:
> > >>
> > >> I had the same issue as Leon some days ago (and this seems to be a
> very
> > >> common issue), and i tried your component. It's very good, with some
> > ajax,
> > >> but the return type is a little bit limited for what i was trying to
> > >> achieve(update a combo with information from another combo, which has
> > your
> > >> mixin). The only way to do it was hardcoding the select in my java(or
> > >> javascript, whatever), that was too creepy for me.
> > >>
> > >> My questions:
> > >> 1 - Is there any way of change my page data with something more
> > elaborate
> > >> than TextStreamResponse?
> > >> 1 - Is there any efforts on adding some similar behavior to future
> > >> releases?
> > >>
> > >> Thank you!
> > >>
> > >> 2008/4/24 Sven Homburg <ho...@googlemail.com>:
> > >>
> > >>
> > >> > try this
> > >> >
> > >> >
> > >>
> >
>
http://87.193.218.134:8080/t5components/t5c-commons/ref/org/apache/tapestry/
commons/mixins/OnEvent.html
> > >> >
> > >> > 2008/4/24, Leon Derks <le...@cumquat.nl>:
> > >> > >
> > >> > > Hello
> > >> > >
> > >> > > Is it possible to catch the onChange event from a select
component
> > in
> > >> the
> > >> > > java  page?
> > >> > >
> > >> > > I would expect something like: onChangeFromSelect(long id) {....}
> > >> > >
> > >> > > Because I want to update information on my page, based on the
> value
> > >> that
> > >> > is
> > >> > > selected.
> > >> > >
> > >> > > How can I do that?
> > >> > >
> > >> > > Leon
> > >> > >
> > >> > >
> > >> > >
> > ---------------------------------------------------------------------
> > >> > > To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
> > >> > > For additional commands, e-mail: users-help@tapestry.apache.org
> > >> > >
> > >> > >
> > >> >
> > >> >
> > >> > --
> > >> > with regards
> > >> > Sven Homburg
> > >> > http://tapestry5-components.googlecode.com
> > >> >
> > >>
> > >>
> > >>
> > >>
> > >> --
> > >> Atenciosamente,
> > >>
> > >> Marcelo Lotif
> > >>
> > >
> > >
> > >
> > > --
> > > with regards
> > > Sven Homburg
> > > http://tapestry5-components.googlecode.com
> > >
> >
> >
> >
> > --
> > with regards
> > Sven Homburg
> > http://tapestry5-components.googlecode.com
> >
>
>
>
>
> --
> Atenciosamente,
>
> Marcelo Lotif
>



-- 
with regards
Sven Homburg
http://tapestry5-components.googlecode.com


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