iw_from_name missing in show_env.cgi window

hi,
In code I have removed tags to overcome browser interpretation.
scenario 1-----
I this scenario I am using a callout in my datacapture.cfg as below. If I click on the ShowEnv button , the CGI Environment window pops up. In this window I can see iw_form_name.
item name=showENV
label>show env label
text size="60" maxlength="100">
cgi-callout url="/iw-bin/show_env.cgi" label="showENV" window-features="width=750,height=500,resizable=yes,scrollbars=yes">
text>
item>

Scenario 2--------

Here I am creating my callout in a different way.
First in datacapture.cfg , the callout is as below
item name=showENV>
label>ENV label
text size="60" maxlength="100">
cgi-callout label="showENV">
text>
item>

then I write one callout handler where I actually open the show_env.cgi window. BUT IN THE OPENED WINDOW THERE IS NO iw_form_name AND ITS value.following is the code for the onCallout handler

IWEventRegistry.addItemHandler("/showENV", "onCallout", showEnv);
function showEnv() {
window.open("/iw-bin/show_env.cgi","", "width=750,height=500,resizable=yes,scrollbars=yes");
return true;
}

Is that correct what I am trying to do

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Comments

ISCBorisB

iw_form_name missing in show_env.cgi window

It's not really "missing". You are using different mechanisms to get to the cgi which means different cgi-execution
environments. "show_env" Page disclaimer indicates that unless documented, anything in there is subject to change.

In the "Form" case TS sets few (documented!) callback variables to let you modify opener's form from the CGI
callout. In the "FormAPI" case it is developer's responsibility to get/set Forms' items using FormAPI classes/methods.
In other words, you do not need iw_form_name, iw_callback_var and all this obsolete Jazz in the FormAPI.

Is that correct what I am trying to do

That depends on what exactly you are trying to do.

kisnak

In the "Form" case TS sets few (documented!) callback variables to let you modify opener's form from the CGI
callout. In the "FormAPI" case it is developer's responsibility to get/set Forms' items using FormAPI classes/methods.
In other words, you do not need iw_form_name, iw_callback_var and all this obsolete Jazz in the FormAPI.

That depends on what exactly you are trying to do.[/QUOTE]
___________________________________________________________
Actually I have a different callout. I have included show_env.cgi callout for testing(I mean to know whether it returns iw_form_name through formAPI or not.)
My actual callout invokes a jsp file from callout handler(formAPI). In that jsp file I need the iw_form_name to get the item values of the form.
so when I invoke a jsp file using formAPI, the iw_form_name is returned as null and this stops me to get the values of the form in my jsp file.

WHEN I USE MY CALLOUT through form it works Fantastic(I mean I can get my form name).
BUT I have to use it through formAPI only.

Is it possible to get the form name in my jsp file when I invoke it through formAPI. If not can you suggest any alternate way to do this.

Thanks

ISCBorisB

Is it possible to get the form name in my jsp file when I invoke it through formAPI. If not can you suggest any alternate way to do this.

Sure it's possible. You have numerous options.

For example, from your JSP you can get low level access to the opener(DCR) Form. 'Opener' in this context is not a figure
of speech, that's DOM window's object. So, in your JSP the following will give you a reference to DCR Form if you need one:
var callerForm = window.opener.document.forms[0];

If I were you however, I would not go that deep unless absolutely necessary. FormAPI provides you with the excellent tool
that hides TST implementation details. Use it! You need a value from the DCR in your JSP? Code a helper in the DCT

function getValue(access_string) {
   var litem = IWDatacapture.getItem(access_string);
   return (litem != null)? litem.getValue() : null;
}

You can call it from your JSP like that: window.opener.top.api.getValue('root_cnt/first_paragraph');
Look here for JS/DOM Details.