Defining custom components in Facelets is easy and quick but there's one thing I can't figure out.

Is it possible with Facelets to define what attributes my custom component has? I.e: I've created a component which is used in such a way:

 <blue:modalWindow id="editFeesWizard" width="500" height="440" title="Wizard">

and is defined in taglib.xml as follows:

<!DOCTYPE facelet-taglib PUBLIC
        "-//Sun Microsystems, Inc.//DTD Facelet Taglib 1.0//EN"
        "http://java.sun.com/dtd/facelet-taglib_1_0.dtd">
<facelet-taglib>
    <namespace>http://blue/</namespace>
    <tag>
        <tag-name>modalWindow</tag-name>
        <source>components/modalWindow.xhtml</source>
    </tag>    
</facelet-taglib>

Taglib doesn't contain any information on component attributes (id, width, height, title) and IDE cannot therefore check my syntax nor can it suggest attributes while I'm typing.

I cannot find anything on this subject in Facelets documentation. Thought you could help. Thanks!