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From Chris Mylonas <ch...@opencsta.org>
Subject Re: Q? about render phase of grid
Date Mon, 02 Apr 2012 23:21:08 GMT
> 
> 
>> BTW,  I'm mucking around with my first component and during @SetupRender phase I
have no data and return false to jump directly to @CleanupRender - which outputs my div saying
"There is no data".
>> 
>> I know this (@CleanupRender) will output all the time when I have elements to write
out in @BeginRender phases, but I'm just slowly stepping through it all so I understand the
render phases a bit better.
> 
> See http://tapestry.apache.org/component-rendering.html and http://jumpstart.doublenegative.com.au/jumpstart/examples/navigation/whatiscalledandwhen.


Just an FYI,
Inspecting jumpstart, and the component rendering page, I couldn't get @BeforeRenderBody to
fire.

	@BeforeRenderTemplate
	boolean beforeRenderTemplate(MarkupWriter writer){
		Element cur = writer.element("div",
				"class","userbackground").addClassName("adifferentbackground");
		cur.text("CHRIS! This is your amazing test div - beforeRenderTemplate");
		writer.end();
		
		return true ;
	}
	
	@BeforeRenderBody
	void beforeRenderBody(MarkupWriter writer){
		
		Element cur = writer.element("div",
				"class","userbackground").addClassName("adifferentbackground");
		cur.text("CHRIS! This is your amazing test div - beforeRenderBody");
		writer.end();

	}

The component rendering page says "...Generally, your code will use the SetupRender, BeginRender,
AfterRender and CleanupRender phases ... often just one or two of those..."  which I'm happy
with.

Is the diagram accurate as to this @BeforeRenderBody annotation?  For my case,  I'm happy
to use beginRender - I just can't seem to follow the flow to get @BeforeRenderBody to do what
is suggested on https://wiki.apache.org/tapestry/Tapestry5HowToCreateYourOwnComponents for
the tree example.


Cheers
Chris
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