Add classgroup CGI parameter.

[sdlime]

I’ve recently discovered the usefulness of class GROUPs in setting up a mapfile to render nicely with and without an image background. It’s very handy to manage 1 layer definition with alternative display configs. What sucks is triggering the use of a group. Maybe I’m missing something but I had to do URL-based config on each layer that supported the different class groups.

It would be helpful to define a classgroup once and then for all layers with classes that use it we set the layer CLASSGROUP. If a layer doesn’t use it then no change is made.

Steve

[sdlime]

Patch against 6.0 branch.

[sdlime]

Approach is to add this in msCGILoadMap() so that it can be used with WMS. Makes since this is basically a shortcut for run-time configuration. Only layers that have classes that match the supplied value have their CLASSGROUP attribute set.

Committed in trunk at r13171. Moving to documentation.

Steve

[havatv]

Documentation added (new variable in cgi/controls) for trunk in r13177. Closing.