Jade Sitetree - Layout Tag Library

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FAQ

When should I use the Layout system?
Can I embed one layout tag inside another?
Can I place several layouts on one JSP page?
Can I specify multiple templates in a single template file?
How do <jsp:include ...>'s work?

When should I use the Layout system?

Everywhere, of course ;-)

The Layout system should be used whenever you wish to parameterize the layout of the page. Even a basic HTML page has several fragments that comprise the page. Some common fragments are:

header
top navigation
left navigation
ads
content
footer

Since it is impossible to predict when marketing will come up with the next company branding, it may be prudent to at least parameterize the basic page layout.

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Can I embed one layout tag inside another?: Of course. The tags will still work properly. Note, however, that each DefineTag is associated with its nearest LayoutTag.
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Can I place several layouts on one JSP page?: Yes.
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Can I specify multiple templates in a single template file?: No. Each template must be specified in its own template definition file. However, you can define a new layout in the template (that refers to another template).
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How do <jsp:include ...>'s work?: Unfortunately, the <jsp:include ...> tag is not supported with the Layout library. You can not place the include tag inside a LayoutTag. Various JSP containers have various behaviors. However, using the <%@include ... %> page directive works just fine. The include tag can also be used in other parts of the JSP page, outside the LayoutTag.
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