Thanks for the response. I think I found the solution I was looking
for... after browsing through the define taglib sources:
Use define:bean, as in:
<define:taglib uri="myplugin">
<define:tag name="dependency-handle"/>
<define:bean name="mytag" className="com.foo.MyTag"/>
<define:bean name="myparenttag" className="com.foo.MyParentTag"/>
</define:taglib>
Then override MyTag's findAncestorWithClass() as:
<snip>
protected Tag findAncestorWithClass(Class type) {
// First try the default
Tag tag = super.findAncestorWithClass(type);
if (tag == null) {
// Then try looking for a DynamicBeanTag
tag = findDynamicBeanAncestorWithClass(getParent(), type);
}
return tag;
}
protected Tag findDynamicBeanAncestorWithClass(Tag parent, Class type) {
if (parent == null) {
return null;
}
if (parent instanceof DynamicBeanTag) {
DynamicBeanTag tag = (DynamicBeanTag)parent;
Object bean = tag.getBean();
if (type.isAssignableFrom(type)) {
return (Tag)bean;
}
}
return findDynamicBeanAncestorWithClass(parent.getParent(), type);
}
</snip>
This will unwrap the DynamicBeanTag and allow MyTag to behave as
excepted when looking for an ancestor tag.
With this combination, I can from an external project do something like:
<project xmlns:myplugin="myplugin">
<myplugin:myparenttag>
<!-- can talk to myparenttag via findAncestorWithClass() -->
<myplugin:mytag/>
</myplugin:myparenttag>
</project>
Cheers,
--jason
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