Matt:
This is the code I use in my tags to walk the tag stack. If I remember
correctly, Aaron (the nested tags guy), had a problem with walking the tag
stack and had a different solution. You can find that in the nested tag
library.
The default message file has a handle in the request / session using the
o.a.s.Globals.MESSAGES_KEY.
Edgar
public static ActionForm findActionForm(PageContext context, Tag tag)
{
String bean = findBeanName(tag);
if (bean == null) {
log.warn("findActionForm: could not find the bean");
return null;
}
return (ActionForm) context.findAttribute(bean);
}
public static String findBeanName(Tag tag)
{
FormTag ft = findFormParent(tag);
if (ft == null) {
log.warn("findBeanName: couldn't find HTML:FORM tag");
return null;
}
return ft.getBeanName();
}
public static FormTag findFormParent(Tag tag)
{
if (tag == null) {
log.warn("findFormParent: the supplied tag was null");
return null;
}
if (tag instanceof FormTag) {
return (FormTag) tag;
}
return findFormParent(tag.getParent());
}
-----Original Message-----
From: Kruse, Matt [mailto:[EMAIL PROTECTED]
Sent: Wednesday, August 20, 2003 12:41 PM
To: 'Struts Users Mailing List (E-mail)'
Subject: Can an <INPUT> tag know its form name? Also, application
resources...
In writing a taglib for my calendar popup, I've come across two
questions:
1) I need to write javascript which references the generated <input>
tag. To
do this, I need to know the name of the form that it is contained in to
get
a javascript reference to it. If no form name is found, I'll default to
form
[0]. This isn't working:
protected String getFormName() {
// Acquire the form tag we are associated with
FormTag formTag =
(FormTag)pageContext.getAttribute(Constants.FORM_KEY);
if (formTag==null) {
return "0";
}
else {
return "'"+formTag.getName()+"'";
}
}
I took this from the <html:option> tag as an example. Is this not
possible
for the form tag?
2) I have a .properties file for my taglib which defines standard text
and
default options. It would be great if a user could over-ride those
settings
with messages in their own application-specific MessageResources. Is
there a
generalized way, in my taglib code, to get a reference to the
application's
message resources so I can search for keys that over-ride my defaults?
The other option I thought of is that the developer can extend my taglib
with their own and point to their own MessageResources file, but this
isn't
as slick.
Any other options?
PS: Just have to clear up these two things and write more examples and
it'll
be ready for testing...
Thanks!
Matt Kruse
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