Re: [T5]: rendering component with nested component with @Component annotation

[Howard Lewis Ship]

Sub-components have no meaning unless there's a template.  It is the
elements in the template that drive the creation of sub-components. This
should be more explicit in the documentation, and perhaps there should be a
check for components in classes without a template.

On 5/3/07, Kristian Marinkovic <[EMAIL PROTECTED]> wrote:

hi,

does anyone know how to render a Tapestry 5 component that itself
contains a component with the @Component annotation?

What i did so far is to define a template for the first component that
contains the second component as a embedded component (code below).

I'm trying to write a Stylesheet component that depends on a
RelationshipLink (... actually the <link> tag :)) (please comment
on whether you consider this component to be useful/reasonable
or not).

anyway, is this the right approach for writing (nested) components?
should i use component inheritance instead? then i do not need the
template.

g,
kris

example code:

public class Stylesheet {
    @Parameter(required=true) private Asset href;
    @Parameter  private String media;
    @Parameter  private String rel;
    @Parameter(value="text/css",defaultPrefix="literal") private String
type;



@Component(id="relationshipLink",parameters={"href=href","media=media","rel=rel","type=type"})
    private RelationshipLink relationshipLink;

    public RelationshipLink getRelationshipLink() {
        return relationshipLink;
    }

Stylesheet.html
<link t:id="relationshipLink" xmlns:t="http://tapestry.."; />

//see http://www.w3.org/TR/html4/struct/links.html for more details on
link
public class RelationshipLink {
    /*
     * As the only valid location for &lt;link&gt; is within &lt;head&gt
it will
     * not check the location
     */
  ...
    void beginRender(MarkupWriter writer) {
        writer.element("link",
                "href",href, "charSet",charSet, "hrefLang",
                hrefLang,"media",media,"rel",rel,"rev",rev,
                "target",target,"type",type);
        writer.end();
    }

--
Howard M. Lewis Ship
TWD Consulting, Inc.
Independent J2EE / Open-Source Java Consultant
Creator and PMC Chair, Apache Tapestry
Creator, Apache HiveMind

Professional Tapestry training, mentoring, support
and project work.  http://howardlewisship.com