CForms: Accessing javaflow continuation or session from java event handler...

[Thomas Lutz <ma...@gmx.at>]

Hi list !

I use java as flow language, not javascript. This forces me to use java 
in all places, where javascript is used in the samples, and my problem 
are action event listeners. I managed to write a event listener in java, 
accessing all the form elements via the event param, but...

How do I access the session, or the application ?

Or even better, how do I access the instance of my javaflow class, to 
set some class variables ?

As I don't like to convert all my flow code to javascript ... Help 
please :-) !

thanks,
tom

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Re: CForms: Accessing javaflow continuation or session from java event handler...

[Thomas Lutz <ma...@gmx.at>]

Solution:

I use a formhandler for the complete form now, and not separate classes 
for each action. This form handler is instantiated in javaflow, so I am 
able to pass it everything I need when processing the action events.

Some code snippets (they are not really completed now, but enough to 
show how it works):

Javaflow:

FormInstance form = new FormInstance("cocoon:/" + tFormName + 
"_form_def.xml");
log.info("doGenericForm done generating FormInstance");
           
Form tForm = (Form)form.getModel();
GenericXFaceFormHandler tFormHandler = new GenericXFaceFormHandler();
tForm.setFormHandler(tFormHandler);


You need a form handler:

public class GenericXFaceFormHandler extends AbstractFormHandler {

    /**
     * The logger.
     */
    private Log log = 
LogFactory.getFactory().getInstance(this.getClass().getName());
       
    /**
     * Recieves all event and delegates depending on the command string.
     * <br>

     * @author    tml
     *
     * @date    2005-07-20    tml        Init    <br>
     */   
    public void handleActionEvent(ActionEvent actionEvent) {
        String tCommand = actionEvent.getActionCommand();
       
        log.info("An ActionEvent happened with command [" + tCommand + 
"]" );
       
        if (tCommand != null && tCommand.indexOf(".") != -1)
        {
       
            String tActionCode = 
tCommand.substring(0,tCommand.indexOf("."));
            log.info("Action code is [" + tActionCode + "]");
       
            if  ("switch".equals(tActionCode))
            {
                switchFormGroups(actionEvent);
            }
            else if ("assignresult".equals(tActionCode))
            {
                assignResult(actionEvent);
            }
        }   

    }

    public void handleValueChangedEvent(ValueChangedEvent 
valueChangedEvent) {
        // TODO Auto-generated method stub

    }





Thomas Lutz schrieb:

> Hi list !
>
> I use java as flow language, not javascript. This forces me to use 
> java in all places, where javascript is used in the samples, and my 
> problem are action event listeners. I managed to write a event 
> listener in java, accessing all the form elements via the event param, 
> but...
>
> How do I access the session, or the application ?
>
> Or even better, how do I access the instance of my javaflow class, to 
> set some class variables ?
>
> As I don't like to convert all my flow code to javascript ... Help 
> please :-) !
>
> thanks,
> tom
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@cocoon.apache.org
> For additional commands, e-mail: users-help@cocoon.apache.org
>
>


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