my component - my renderer

[Eric Härtel]

Hi everybody,

I'm writing my first component, and something with the component renderer relation doesn't work. I use JSF with facelets and started at the taglib.xml with

<tag>
		<tag-name>rect</tag-name>
		<component>
			
			<component-type>com.mycompany.component.rect</component-type>
			<renderer-type>com.mycompany.component.rect</renderer-type>
		</component>
	</tag>

Thereafter I added the faces-config.xml with the component and the renderer in the renderer-kit

  <component>
		<component-type>com.mycompany.component.rect</component-type>
		<component-class>com.mycompany.component.rect.Rect</component-class>
	</component> 
...
<renderer>
			<component-family>com.mycompany.component</component-family>
			<renderer-type>com.mycompany.component.rect</renderer-type>
			<renderer-class>com.mycompany.component.rect.RectRenderer</renderer-class>
		</renderer>
	</render-kit>
 

IMHO that should be enough to connect a component to the appropriate renderer. In the server log I found this during serverstartup:

  2009-06-08 09:10:48,140: DEBUG org.apache.myfaces.renderkit.html.HtmlRenderKitImpl.addRenderer(HtmlRenderKitImpl.java:113) - add Renderer family = com.mycompany.component rendererType = com.mycompany.component.rect renderer class = com.mycompany.component.rect.RectRenderer  

Now the problem, when I try to render my Rect the following error is shown in the server log:

  INFO: No Renderer found for component {Component-Path : [Class: com.mycompany.component.rect.Rect,Id: null]} (component-family=com.mycompany.component, renderer-type=javax.faces.Text)  

As you see, the render-type is wrong. Does anybody have some sugestion how to connect the component with the renderer.

Greetings
Eric

[Tim Holloway]

If the component renders itself, the renderer-type defined in the component should be null. The stock HTML renderer types are tied to specific HTML elements and JSF decided that you're planning on rendering an HTML input text box element.

I'm surprised you got what you did, though, since Facelets puts its own spin on custom tags and their rendering. Which, alas, I've not seen clearly explained.

[Eric Härtel]

The component should not render itself. There is a component class Rect holding height and width and all that stuff, and there is a class RectRenderer.

[Eric Härtel]

It is solved. The component class was derived from UIOutput, which returns always renderer type Text.