[TAPESTRY-2542] Add new method hasBody() to ComponentResources, to reveal if component has a body or not

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 5.0.13
• Fix Version/s: 5.0.14
• Component/s: tapestry-core
• Assignee: Howard Lewis Ship
• Reporter: Martin Papy
• Created: 28/Jul/08 23:25
• Updated: 05/Aug/08 23:12
• Resolved: 05/Aug/08 23:12

Description

Same idea as in Tapestry-2541 but in a much lighter way :

In my case, I use the Layout pattern for rendering my pages, but depending on the situation, sometimes the body of the layout is empty. In that case I would like to display a generic content. So I imagine something like this :

<t:if test="hasBody">
Blah blah blah
<t:parameter name="else">
<t:body />
</t:parameter>
</t:if>

But I don't know how to write the test "hasBody".