[Chameleon] XML Theme Legend -Choosing what to Display-

[Dave Sampson]

Hey Yall,

We have overcome many battles of the theme legend thanks to posts in 
this group, so I hope this initiated post will return good results.

Background:
We are using both an XML Theme Legend and a LEGEND template to produce 
two different results (oln seprate tabs)
We have tailored the Legend to show only layers that are currently 
turned on and vissible in the current extent (view).
We have a THEME to GROUP to LAYER relation in our theme legend
Under each GROUP exists one or Multiple LAYERS
If multiple LAYERS exist they usualy flow seamlessly calling upon 
appropriate layers for each extent (view)
If a GROUP contains a single LAYER that LAYER owns a whole group.
Each THEME and GROUP can be (de)activated through a checkbox

Setup:
We are using a PHTML file that calls an HTML file, which calls a LEGEND 
TEMPLATE and LEGEND REDERER
In that Same PHTML file we call a fake THEME TEMPLATE and a THEME XML 
file and THEME RENDERER,

The challenge:
If a GROUP contains one (or multiple) LAYERS that can not be viewed at 
the current extent we would like that group to not show up in the THEME 
tab... thus not permitting user input to (un)check a given group, or 
THEME if applicable. Our goal is that only GROUP(s) (and THEMES) 
containing LAYER(s) that can give the user instant feedback can be 
(un)checked.

I hope I have provided enough info, but let me know if more is required.

Cheers

Dave



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|Dave Sampson: Geographic Information System (GIS) Technician	|
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